DEPARTMENT OF THE INTERIOR

UNITED STATES GEOLOGICAL SURVEY

GEORGE OTIS SMITH, DIRECTOR

WATER-SUPPLY PAPER 336

WATER RESOURCES OF HAWAII

1912

BY

C. H. PIERCE AND G. K. LARRISON

WASHINGTON

GOVEBNMENT PRINTING OFFICE 

1914

CONTENTS.

Page.

Authority for investigations................................................. 9

Cooperation................................................................ 10

Scope of work............................................................. ^ 10

Field methods of measuring stream flow..................................... 11

Base data.............................................................. 11

Weir measurements................................................... 11

Velocity-area method................................................... 12

Definition of terms......................................................... 16

Convenient equivalents.................................................... 18

Office methods of computing and studying discharge and run-off.............. 19

Explanation of tables....................................................... 22

Accuracy and reliability of field data and comparative results................. 24

Division of work.......................................................... 24

Gaging stations maintained in Hawaii...................................... 25

.Geography of the Hawaiian Islands. .\...................................... 29

Station records............................................................ 34

Island of Kauai........................................................ 34

Waimea River basin................................................ 34

' Waimea River near Waimea, Kauai............................ 34

, Kawaikoi Stream near Waimea, Kauai.......................... 35

Waiakoali Stream near Waimea, Kauai......................... 37

Mohihi Stream near Waimea, Kauai............................. 38

Waialae Stream near Waimea, Kauai............................ 39

Kekaha ditch at camp No. 1, near Waimea, Kauai................ 40

Kekaha ditch at flume No. 2, near Waimea, Kauai.............. 42

Kekaha ditch at siphon near Waimea, Kauai ................... 42

Kekaha ditch at tunnel No. 12, near Waimea, KauaL............. 43

Waimea ditch near Waimea, Kauai.............................. 45

Kamenehune ditch near Waimea, Kauai......................... 47

Makaweli River basin...........................................;. 48

Makaweli River near Waimea, Kauai........................... 48

Halekua Stream near Waimea, Kauai........................... 50

Olokele ditch at tunnel No. 12, near Makaweli, Kauai........... 50

Olokele ditch at weir near Waimea, Kauai..................... 52

Poowaiomahaihai ditch near Waimea, Kauai....... ........... 53

Hanapepe River basin............................................ 55

East Branch of Hanapepe River at Hanapepe Falls, near Eleele,

Kauai...................................................... 55

Hanapepe Biver at Koula, near Eleele, Kauai................... 55

Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai.......... 57

Hanapepe ditch at Koula, near Eleele, Kauai................... 59

Hanapepe ditch at weir near Hanapepe, Kauai .............. 60

Hanapepe River at Hanapepe Falls, near Eleele, Kauai.......... 62

Hiloa ditch at Hanapepe Fails, near Eleele, Kauai............... 62

3
4 CONTENTS.

Station records Continued.

Island of Kauai Continued. Page.

Huleia Eiver basin................................................ 63

Huleia River near Lihue, Kauai............................... 63

Hanamaulu Eiver basin........................................... 64

Hanamaulu River at Kapaia, near Lihue, Kauai ............... 64

Wailua Eiver basin ............................................... 66

South. Fork of Wailua Eiver above Waiehu Falls, near Lihue,

Kauai...................................................... 66

Lihue ditch near Lihue, Kauai.................................. 68

Hanamaulu ditch at siphon near Lihue, Kauai................... 70

North Fork of Wailua Eiver near Lihue, Kauai.................. 71

Uhau lole Stream at 750-foot elevation near Lihue, Kauai....... 73

East Branch of North Fork of Wailua Eiver, near Lihue, Kauai.. 74

Keahua Stream at 750-foot elevation near Lihue, Kauai......... 75

Kawi Stream at 750-foot elevation near Lihue, Kauai............. 75

Kanaha ditch at intake, near Lihue, Kauai..................... 76

Konohiki Stream basin............................................. 77

Konohiki Stream at Makakualele mauka weir, near Kapaa, Kauai. 77

Konohiki Stream at Makakualele makai weir, near Kapaa, Kauai.. 78

Kaehulua Stream basin............................................ 79

North Fork of Kaehulua Stream at Kainahola weir, near Kapaa,

Kauai...................................................... 79

Kaehulua Stream at Kuhinoa weir, near Kapaa, Kauai........... 80

South Fork of Kaehulua Stream at Wainamuamu weir, near Kapaa,

Kauai...................................................... 81

Kapaa Eiver basin................................................. 82

Kapaa Eiver at Kapahi, near Kapaa, Kauai..................... 82

Akulikuli Spring at weir near Kapaa, Kauai.................... 84

Kapahi ditch at Kapahi, near Kapaa, Kauai.................... 85

Kaneha ditch, at weir near Kealia, Kauai...................... 86

Anahola Eiver basin................................................ 87

Anahola Eiver at 1,140-foot elevation near Kealia, Kauai........ 87

Anahola Eiver above dam at Kiokala, near Kealia, Kauai........ 88

Anahola ditch at Kiokala, near Kealia, Kauai.................... 89

Kalihiwai Eiver basin.............................................. 90

Kalihiwai Eiver near Kilauea, Kauai........................... 90

Hanalei Eiver basin............................................... 91

Hanalei Eiver near Hanalei, Kauai............................ 91

China ditch near Hanalei, Kauai............................... 92

Kuna ditch near Hanalei, Kauai............................... 93

Lumahai Eiver basin.............................................. 95

Lumahai Eiver near Wainiha, Kauai........................... 95

Wainiha Eiver basin............................................... 95

Wainiha Eiver near Wainiha, Kauai........................... 95

Wainiha canal at intake, near Wainiha, Kauai.................... 97

Miscellaneous measurements on Kauai in 1912........................ 98

Pumped water on Kauai............................................. 99

Ditch seepage and losses on Kauai.... J.............................. 99

Island ofOahu........................................................ 100

Palolo Stream basin................................................ 100

Waiomao Stream at 900-foot elevation near Honolulu, Oahu...... 100

Waiomao Stream above Pukele Stream, near Honolulu, Oahu.... It2u

Pukele Stream at Mahoe Springs, near Honolulu, Oahu..........' 10%
. CONTENTS. .5

Station records Continued.

Island of Oahu Continued. Page.

Manoa Stream basin................................................ 106

Manoa Stream at upper end of valley near Honolulu, Oahu...... 106

Manoa Stream at College of Hawaii near Honolulu, Oahu........ 108

Manoa Stream at Waialae road, near Honolulu, Oahu............ 108

Pauoa Stream below Kahuawai Spring near Honolulu, Oahu...... 109

Kahuawai Spring near Honolulu, Oahu......................... 110

Nuuanu Stream basin.................................. ..........i. Ill

Nuuanu Stream at Kuakini Street, Honolulu, Oahu.............. Ill

Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu........ 113

Luakaha weir in Nuuanu Valley, near Honolulu, Oahu.......... 115

Waikane Stream basin............................................. 116

Waikane Stream near Waikane, Oahu........................... 116

Waiahole Stream basin............................................. 117

Waiahole Stream at Manianiaula, near Waikane, Oahu.......... 117

Waiahole Stream at Waiahole, near Waikane, Oahu.............. 119

Kahanaiki Stream near Waimanalo, Oahu ...................... 121

Zaihm Stream near Waimanalo, Oahu........................... 122

Pohakea Stream near Waimanalo, Oahu......................... 122

Kamakalepo Stream near Waimanalo, Oahu ................... 123

Kaimi Stream near Waimanalo, Oahu........................... 124

Makawao Stream near Waimanalo, Oahu....................... 124

Makawao ditch near Waimanalo, Oahu ........................ 125

Wong Leong ditch near Waimanalo, Oahu ..................... 125

Waimanalo ditch below reservoir near Waimanalo, Oahu......... 126

Pump ditch near Waimanalo, Oahu ............................ 127

Miscellaneous measurements on Oahu in 1912....................... 128

Artesian wells..................................................... 128

Island of Maui......................................................... 129

West Maui........................................................ 129

Kahakuloa Stream basin....................................... 129

Kahakuloa Stream at Kahakuloa, near Waihee, Maui........ 129

Waihee Stream basin.......................................... 130

Waihee Stream at dam near Waihee, Maui.................. 130

Waihee canal near Waihee, Maui........................... 132

Waihee canal at weir near Wailuku, Maui..................... 133

Spreckels ditch near Waihee, Maui........................ 134

Waiehu Stream basin.......................................... 135

North Waiehu Stream near Waihiku, Maui................. 135

South Waiehu Stream near Wailuku, Maui................. 136

lao Stream basin............................................. 137

lao Stream near Wailuku, Maui............................. 137

Maniania ditch near Wailuku, Maui........................ 139

Waikapu Stream basin......................................... 141

Waikapu Stream near Waikapu, Maui...................... 141

South Side Waikapu ditch near Waikapu, Maui............. 142

Palolo (Everett) ditch near Waikapu, Maui.................. 144

Ukumehame Stream basin..................................... 146

Ukumehame Stream near Olowalu, Maui.................... 146

Olowalu Stream basin ........................................ 147

Olowalu ditch No. 1, near Olowalu, Maui................... 147

Launiupoko Stream basin .................................... 149

Launiupoko Stream near Lahaina, Maui.................... 149
6 CONTENTS.

Station records Continued. 

Island of Maui Continued.

West Maui Continued. Page.

Kauaula Stream basin......................................... 151

Kauaula Stream near Lahaina, Maui....................... 151

Kauaula ditch near Lahaina, Maui ........................ 152

Lahainaluna Stream basin..................................... 154

Lahainaluna Stream near Lahaina, Maui.................... 154

Kahoma Stream basin........................................ 155

Kahoma Stream near Lahaina, Maui...................... 155

Kahoma ditch at weir near Lahaina, Maui................. 156

Honokawai Stream basin...................................... 157

Honokawai ditch near Lahaina, Maui....................... 157

Honolua Stream basin......................................... 158

Honolua ditch near Honokahau, Maui...................... 158

Honokahau Stream basin...................................... 159

Honokahau ditch at intake, near Honokahau, Maui.......... 159

Honokahau ditch at Honokawai weir, near Honokahau, Maui.. 160

Miscellaneous measurements.................................... 162

East Maui 

Koolau ditch region............................................ 162

Koolau ditch near Keanae, Maui............................ 162

Spreckels ditch region.......................................... 164

Haipuaena Stream near Huelo, Maui........................ 164

Puohakamoa Stream near Huelo, Maui...................... 166

Alo Stream near Huelo, Maui.............................. 168

Waikamoi Stream near Huelo, Maui......................... 169

Oopuola Stream near Huelo, Maui.......................... 171

Spreckels ditch at station No. 1, near Huelo, Maui........... 172

Spreckels ditch at station No. 2, near Huelo, Maui........... 174

Spreckels ditch at station No. 3, near Huelo, Maui........... 176

Spreckels ditch at station No. 4, near Heulo, Maui........... 178

Spreckels ditch at station No. 5, near Heulo, Maui........... 179

Spreckelg ditch at station No. 6, near Huelo, Maui........... 181

Spreckels ditch at station No. 7, near Huelo, Maui........... 183

Spreckels ditch at station No. 8, near Huelo, Maui........... 185

Center ditch region............................................. 186

Center ditch near Huelo, Maui............................. 186

Hamakua ditch region......................................... 188

Nailiilihaele Stream near Huelo, Maui...................... 188

Kailua Stream near Huelo, Maui............................ 189

Hoolawaliilii Stream-near Huelo, Maui....................... 190

Hoolawanui Stream near Huelo, Maui....................... 191

Honopou Stream near Huelo, Maui......................... 193

Halehaku Stream weir near Huelo, Maui .................... 194

Opana Stream near Huelo, Maui............................. 196

Opana ditch near Huelo, Maui.............................. 196

New Hamakua ditch at Nailiilihaele weir, near Huelo, Maui. 198

New Hamakua ditch at Halehaku weir, near Huelo, Maui... 199

New Hamakua ditch at station No. 1, near Huelo, Maui..... 200

New Hamakua ditch at station No. 2, near Huelo, Maui..... 200

New Hamakua ditch at station No. 3, near Huelo, Maui...... 201

New Hamakua ditch at station No. 4, near Huelo, Maui...... 202

New Hamakua ditch at station No. 5, near Huelo, Maui..... 203
CONTENTS. 7

Station records Continued. 

Island of Maui Continued. 

East Maui Continued.

Hamakua ditch region Continued. Page.

Old Hamakua ditch at Opana weir, near Huelo, Maui........ 204

Kaluanui ditch at Puuomalei, near Hamakuapoko, Maui..... 205

Lowrie ditch at Opana weir, near Huelo, Maui.............. 207

Haiku ditch at Peahi weir, near Huelo, Maui............... 208

Miscellaneous measurements.................................... 209

Pumped water on Maui........................................ 209

Island of Hawaii....................................................... 212

Hilo group of streams.............................................. 212

Wailuku River near Hilo, Hawaii.............................. 212

Honolii Eiver at Kaiwiki, near Hilo, Hawaii..................... 213

Kawainui River at Pepeekeo, near Hilo, Hawaii................. 215

Stations Nos. 1, 2, 3, and 4, at Piihonua, near Hilo,. Hawaii...... 216

Stations at 2,700-foot level in the forest back of Hilo, Hawaii..... 219

Station records.........................................'....... 219

Hamakua group of streams.......................................... 367

Kawainui River near Waipio, Hawaii.......................... 367

Waipio River below Koiawe, near Waipio, Hawaii............... 368

Waipio River below Waima Stream, near Waipio, Hawaii........ 369

New Hamakua ditch at Waima Stream, near Waipio, Hawaii..... 369

New Hamakua ditch at main weir, near Kukuihaele, Hawaii..... 370

Kohala group of streams........................................... 371

Koliala ditch near Kohala, Hawaii............................. 371

Miscellaneous measurements........................................ 381

Rain gaging............................................................... 381

Index................ ,__......................................... 387

WATER RESOURCES OF HAWAII, 1912.

By C. H. PIERCE and G. K. LARRISON.

AUTHORITY FOB INVESTIGATIONS.

This yolume contains results of measurements of the flow of certain streams and ditches in the Territory of Hawaii made during the 

calendar year 1912. The investigations leading to the report were 

made by the United States Geological Survey in cooperation with the 

Territory of Hawaii, under the general sanction of the organic law 

of the Survey (Stat. L., vol. 20, p. 394), which contains the following 

paragraph:

Provided, That this officer [the Director] shall have the direction of the geological 

survey and the classification of public lands and examination of the geological structure, mineral resources, and products of the national domain.

As water is the most abundant and most valuable of the minerals, 

the investigation of water resources is authorized under the provision 

for examining mineral resources. The work has been supported since 

the fiscal year ending June 30, 1895, by appropriations in successive 

sundry civil bills passed by Congress under the following item:

For gaging the streams and determining the water supply of the United States, and 

for the investigation of underground currents and artesian wells, and for the preparation of reports upon the best methods of utilizing the water resources.

The legislature of the Territory of Hawaii approved on March 22, 

1909, "An act to promote the conservation and development of the 

natural resources of the Territory," which provided in substance as 

follows: A special tax of 2 per cent shall be levied, assessed, and collected annually on all incomes in excess of $4,000; and all amounts 

so collected shall constitute a special fund to be expended only for 

the encouragement of immigration and the conservation of natural 

resources in the proportion of three-fourths for immigration and onefourth for conservation. The conservation fund shall be used for the 

development, conservation, improvement, and utilization of the natural resources and shall be available for expenditure at such times 

and in such manner as a board of three persons appointed in accordance with section 80 of the organic act shall, with the approval of the 

governor, determine.

An act of April 26, 1911, amended the original act so as to extend 

it until December 31, 1913.
10 WATER RESOURCES OF HAWAII, 1912.

COOPERATION.

Under the authority conferred by the Federal and Territorial 

legislation, the Director of the United States Geological Survey and 

the Governor of the Territory of Hawaii entered into a cooperative 

agreement, dating from July 1, 1910, for "the gaging of streams and 

the determination of the water supply of the Territory of Hawaii." * 

The principal features of this agreement are:

1. The United States Geological Survey assumes the responsibility 

of gathering, analyzing, and publishing the data.

2. During the progress of the work all notes, maps, and data gathered as a result of field studies are at all times open to inspection by 

the representative of the Territory, and if they are not entirely satisfactory the agreement can be terminated.

3. Accounts for payment of salaries, travel and subsistence, supplies, or other expenses necessary to the completion of the work shall 

be rendered in the manner required by the laws and regulations of 

the contracting parties, and vouchers shall be preferred to either 

party for payment according as it may be convenient or according 

to the balance remaining in the respective allotments.

4. The cost of publication is borne entirely by the Geological 

Survey.

The Territory of Hawaii has been represented in the cooperation 

by the board of allotment appointed by Gov. Walter F. Frear, and 

consists of J. P. Cooke (chairman), Marston Campbell, and E. V.

Wilcox.

SCOPE OF WORK.

The investigations of stream flow in the Territory are not complete, 

nor do they include all the streams that might advantageously be 

studied. They include, however, as many of the streams and ditches 

on the four larger islands as the available appropriations would allow. 

It is essential that records of stream flow should be kept during a period 

of years long enough to determine within reasonable limits the range 

of flow from the maximum to the minimum. The length of such a 

period manifestly varies for different streams. Experience has shown 

that the records should be kept from 5 to 20 years.

In the performance of this work an effort is made to reach the 

highest degree of precision possible with a rational expenditure of 

time and money. In all engineering work there is a point beyond 

which refinement is needless and wasteful, and this statement applies 

with especial force to stream-measurement work in Hawaii. It has 

been found, however, that it is possible to obtain data which are 

sufiiciently accurate, although many of them presented in this report 

are for periods too short to admit of definite conclusions.

1 The United States Geological Survey is also cooperating with the Territory of Hawaii in mapping the 

several islands. The whole of the island of Kauai and a part of the island of Hawaii have been tnapped.
FIELD METHODS OF MEASUMNG STBEAM FLOW. 11

Records have been obtained at about.200 different points in the 

Territory, and in addition to the observations at the regular stations, 

miscellaneous measurements at many other places have been made. 

Records have also been collected regarding precipitation on areas 

drained by the principal streams and at a number of points in the 

mountains at high elevations. .Evaporation losses have been studied 

and data obtained at various places where such losses are serious.

FIELD METHODS OF MEASURING STBEAM FLOW.

BASE DATA.

In making plans for power, irrigation, municipal water supply, and 

other projects involving the use of water from surface streams it is 

necessary to have data from which both the total flow of the stream 

and its distribution from day to day throughout the year can be 

obtained. The data necessary for obtaining such information are 

daily gage heights, which give the fluctuations of rise and fall of the 

stream, and measurements of discharge at various stages, from which 

a rating curve and table can be prepared, giving the discharge for 

any stage. Such a rating is possible from the fact that so long as the 

conditions at the controlling point in the stream remain the same 

there will be the same discharge for any given gage height.

The determination of a discharge is termed a discharge measurement and points at which discharge measurements are made and 

records of daily fluctuations of stage are kept for detennining the 

daily flow are termed gaging stations.

Gaging stations may be divided into two classes, known as weir 

stations and velocity-area stations. At weir stations the head of 

water on "the crest of the weir is measured and the discharge computed by means of a formula. The discharge at velocity-area 

stations is obtained by measuring the velocity of the current and 

the area of the cross-section, the product of the two giving the discharge.

The data presented in this paper were collected at both weir and 

velocity-area stations.

WEIR MEASUREMENTS.

Unquestionably a weir properly constructed and of a type for 

which accurate coefficients have been determined is one of the most 

convenient and reliable means of measuring small quantities of water. 

In practice, however, weirs rarely conform to the requirements 

imposed by the experimenter who derived the coefficients. If the 

crest of the weir is sharp and clean and sufficiently high above the 

bottom of the leading channel and the end contractions are complete 

and the velocity of approach is wanting, or negligibly small, and if 

the head on crest is measured at a distance of 6 or 8 feet back of the
12 WATEE RESOURCES OF HAW AH, 1912.

overfall, the Francis formula will give good results. On the other 

hand, if these essential conditions are not complied with, especially 

if the velocity of approach is considerable, and the contractions are 

imperfect, the Francis formula will not give accurate results. This 

is particularly true if the weir is improperly constructed and there is 

leakage around and under it, as is so frequently the case in practice. 

Observations made on various types of weirs in Hawaii show that 

of the weirs in use in the Territory not all are giving accurate results. 

If,the error is known so that corrections can be made the trouble is 

largely mitigated, but faulty weir records are too often accepted without investigation as to their accuracy.

VELOCITY-ABE A METHOD.

The velocity-area method of measurement consists of determining 

the meaner average velocity of the water past a given cross-section, 

area. The area of the cross section at right angles to the direction 

of flow is determined by soundings which are taken at such distances 

apart as will develop the contour of the stream bed. The depths are 

recorded and also their distances from some arbitrarily chosen initial 

point on one side of the stream.

The method of making the soundings depends on the size and stage 

of the stream. On ditches and small streams, where the depths and 

velocities are not large, a graduated rod may be used to advantage; 

on large streams, which must be measured from bridges or cables, a 

lead weight and sounding line must be used. The weights are of 

different sizes 6£, 10, or 15 pounds according to the swiftness of 

the current, and are torpedo shaped, so as to offer as little resistance 

as possible to the moving water.

On streams with beds which are permanent or nearly so, like the 

South Fork of Wailua River on the island of Kauai and the Wailuku River on the island of Hawaii, a standard cross section is 

usually constructed from careful soundings and referred to the zero 

of the gage, so that the depths for any stage can be found by adding 

the gage height at that stage to the depths below the zero of the gage. 

This method is especially useful at high stages, where it is difficult 

to make accurate soundings.

After the cross-section area of the stream has been measured by 

soundings and horizontal distances, the velocity is determined at a 

number of points. These measurements of velocity should be made 

at frequent intervals across the stream and close enough to take account of any abrupt change in the velocity. For convenience, the 

velocities are usually observed in the same verticals at which soundings are made. On some streams f airly good measurements of velocities may be made by means of subsurface floats. This method is 

applicable, however, only to channels of uniform cross-section area
FIELD METHODS OF MEASURING STBEAM FLOW. 13

over a considerable distance and is very unsatisfactory for use on 

natural streams like those of Hawaii.1

The velocity of flow is best determined by the current meter, which 

is a form of water wheel actuated by the current, and of such size and 

shape that it can easily be placed at any point in the stream.

The new type of penta-recording current meter consists of six cups 

attached to a vertical shaft which revolves on a conical hardenedsteel point when immersed in moving water. The revolutions are 

indicated electrically. The rating, or relation between the velocity 

of moving water and the revolutions of the wheel, is determined for 

each meter by drawing it through still water for a given distance 

at different speeds and noting the number of revolutions for each 

run. From these data a rating table is prepared which>j^yes the 

velocity in feet per second of moving water for any numb^of revolutions in a given time interval. The ratio of revolutions j$p? second 

to velocity of flow in feet per second is very nearly a constant for 

all speeds and is approximately 0.45. - ~ :

Three classes of methods of measuring velocity with current meters 

are in general use multiple-point, single-point, and integration.

The two principle multiple-point methods in general use are the 

vertical velocity curve and 0.2 and 0.8 depth.

In the vertical velocity-curve method a series of velocity determinations are made in each vertical at regular intervals, usually about 

10 to 20 per cent of the depth apart. By plotting these velocities as 

abscissas and their depths as ordinates and drawing a smooth curve 

among the resulting points, the vertical velocity curve is developed. 

This curve shows graphically the magnitude and changes in velocity 

from the surface to the bottom of the stream. The mean velocity 

in the vertical is then obtained by dividing the area bounded by 

this velocity curve and its axis by the depth. This method of obtaining the mean velocity in the vertical is probably the best known, but 

on account of the length of time required to make a complete measurement its use is largely limited to the determination of coefficients 

for purposes of comparison.

In the second multiple-point method the meter is held successively 

at 0.2 and0.8 depth, and the mean of the velocities at these two points 

is taken as the mean velocity for that vertical. On the assumption 

that the vertical velocity curve is a common parabola with horizontal 

axis, the mean of velocities at 0.22 and 0.79 depth will give (closely) 

the mean velocity in the vertical. Actual observations under a 

wide range of conditions show that this multiple-point method gives 

the mean velocity very closely for open-water conditions and that in 

a completed measurement it seldom varies as much as 1 per cent

» Further information regarding the float method is given in Water-Supply Paper 95 and in textbooks 

on stream flow.
14 - WATEB BESOTTBCES OF HAWAII, 1912.

from the value given by the vertical velocity-curve method. It is 

very extensively used in the regular practice of the United States 

Geological Survey.

The single-point method consists in holding the meter either at 

the depth of the thread of mean velocity or at an arbitrary depth 

for which the coefficient for reducing to mean velocity has been 

determined or must be assumed.

Extensive experiments by means of vertical velocity curves show 

that the thread of mean velocity generally occurs between 0.5 and 

0.7 total depth. In general practice the thread of mean velocity is 

considered to be at 0.6 depth, and at this point the meter is held in 

most of the measurements made by the single-point method. A 

large number of vertical velocity curve measurements, taken on 

many streams and under varying conditions, show that the average 

coefficient for reducing the velocity obtained at 0.6 depth to mean 

velocity is practically unity. The variation of the coefficient from 

unity in individual cases is, however, greater than in the 0.2 and 0.8 

method and the general results are not as satisfactory.

In the other principal single-point method the meter is held near 

the surface, usually 1 foot below, or low enough to be out of the effect 

of the wind or other disturbing influences. This is known as the subsurface method. The coefficient for reducing the velocity taken at 

the subsurface to the mean has been found to be in general from 

about 0.85 to 0.95, depending on the stage, velocity, and channel 

conditions. The higher the stage the larger the coefficient. This 

method is especially adapted for flood measurements, or for measurements when the velocity is so great that the meter can not be kept 

in the correct position for the other methods.

The vertical integration method consists in moving the meter at a 

slow but uniform speed from the surface to the bottom and back again 

to the surface and noting the number of revolutions and the time 

taken in the operation. This method has the advantage that the 

velocity at each point of the vertical is measured twice. It is useful 

as a check on the point methods. In using the Price meter great 

care should be taken that the vertical movement of the meter is not 

rapid enough to vitiate the accuracy of the resulting velocity determination.

In practical work on rough streams, such as exist in Hawaii, the 

meter should be held at 0.6 depth for depths of 0.8 or less, For 

greater depths the meter should be held at two points in the vertical, 

0.2 and 0.8 from tho surface.

When the mean velocities in the different verticals have been 

found, the average of two adjacent means is taken as the mean 

velocity for that individual section. The area of the section is
FIELD METHODS OF MEASURING STEEAM TLOW. 15

computed by multiplying the width of the section by the mean depth. 

The discharge of each section is then the product of the area multiplied 

by the mean velocity, and the total discharge of the stream results 

from slimming up the discharge of the individual sections. In practice the work is tabulated in such a way as to render the computation 

very simple.1

Current-meter measurements are not practicable where there- are 

eddies, cross currents, swirls, or passages for the water underneath 

stones. It is usually possible, however, to improve the channel by 

removing bowlders and rocks, so that a satisfactory measuring 

section may be obtained, even on rough, steep streams such as exist 

in Hawaii.

Three kinds of velocity-area gaging stations are in general use in 

Hawaii, according to the means provided for making the observations 

of depth and velocity. They are wading, bridge, and cable stations.

A wading station is one at which measurements are made only 

by wading that is, no means exist for getting above the water at 

any stage except by wading. Such stations are usually on ditches 

or wide, shallow streams, which do not fluctuate greatly in flow. 

Frequently, however, measurements are made at low stages by wading, 

even though other means exist for making measurements at higher 

stages.

A bridge station is one at which the meter is used from a bridge. 

In some places highway or other bridges are available from which 

to make measurements, but generally they are not at the right place 

on the stream. Special bridges are then built.

A cable station is one at which measurements are made from a 

cable spanning the stream. Cable stations are used on large streams, 

such as Hanapepe, Wailua, and Hanalei rivers on the island of Kauai, 

and Wailuku River on the island of Hawaii. The cable supports the 

car from which a man works above the water. Distances are marked 

off on the cable itself or on a small auxiliary cable stretched taut 

above it.

A suitable place for a gaging station having been selected, a staff 

gage is set in the edge of the stream, either vertical or inclined, but 

graduated into tenths, half tenths, or hundredths of feet vertically. 

The gage is securely fastened to rocks or trees to prevent displacement by floods and is so placed that the zero, or reference datum, 

is well below extreme low water. The datum is also referred to a 

permanent bench mark as an additional precaution. An observer is 

then engaged to record the heights of water, morning and evening; 

the mean of the two readings being used as the mean gage height for 

the day. - .

i For a discussion of methods of computing the discharge of a stream see Engineering News, June 25, 

19:8,
16 WATEE EESOUECES OF HAW AH, 1912.

Owing to the rapid rise and fall of most of the streams in Hawaii, 

two gage-height readings a day will not as a rule give a true mean 

for the 24 hours. For this reason, and also owing to the fact that 

many of the gaging stations are necessarily situated in the mountains 

at points remote from all habitations and difficult of access, the use 

of automatic recording gages has been found to be generally necessary. The gages used are of various types, some requiring weekly 

visits and others operating for a month without attention.

The essential features of automatic gages consist of a float free to 

rise and fall with, fluctuations of the water surface, a means of transferring this motion of the float to the record, either directly or througn 

a reducing mechanism, the recording device, and the clock. In most 

gages used on natural streams the float is connected with a counterweight by means of a chain or perforated tape which passes over a 

sprocket wheel connected with gearing in such a way as to reduce the 

motion caused by the rise and fall of the water surface to a convenient 

scale. This vertical motion from the float may be transferred either 

to the pencil or other recording device or to the cylinder carrying the 

paper. The time interval is given by the clock, which may move 

either the paper or the pencil, according to the float connection. For 

all autographic records the motions controlled by the float and the 

clock are brought at right angles so that there results a continuous 

curve where one set of ordinates represents gage heights, and the other 

the time interval.

The gage may be designed to accommodate any range of stage. 

Those used by the United States Geological Survey in Hawaii are 

designed for variations of 5,10, 20, 30, and 36 feet, but so far those 

having a 20-foot range have been found to be sufficient for any stage.

DEFINITION. OF TERMS.

The volume of water flowing in a stream the "run-off" or "discharge" is expressed in various terms, each of which has become 

associated more or less definitely with a certain class of work. These 

terms may be divided into two groups: (1) Those which represent a 

rate of flow, as "second-feet," "gallons per minute," "gallons per 24 

hours," "miner's inches," and "run-off in second-feet per square 

mile," and (2) those which represent the actual quantity of water, as 

"run-off in depth in inches," "million gallons," and "acre-feet." 

They may be defined as follows:

"Second-foot" is an abbreviation for cubic foot per second and is 

the unit for the rate of discharge of water flowing in a stream 1 square 

foot in cross section at a rate of 1 foot per second. It is generally 

adopted as the fundamental unit in the measurement of flowing water 

and is the "natural" unit, as the foot and the second are the unite
DEFINITION OF TEBMS. .17

used in making the physical determinations. Other units may be 

computed from this by the use of factors given in the table of equivalents.

"Gallons per minute" is generally used in connection with pumping 

and city water supply, the United States gallon of 231 cubic inches 

being the unit of quantity and 1 minute the unit of time.

The "miner's inch" is the unit for the rate of discharge of Water 

that passes through an orifice 1 inch square under a head which varies 

locally. It is commonly used by miners and irrigators throughout the 

West, and is defined by statute in each State in which it is used.

"Second-feet per square mile" is the average number of cubic feet 

of water flowing per second from each square mile of area drained, on 

the assumption that the run-off is distributed uniformly both as regards time and area.

"Run-off in inches" is the depth to which the drainage area would 

be covered if all the water flowing from it in a given period were conserved and uniformly distributed on the surface. It is used for comparing run-off with rainfall, which is usually expressed in depth in 

inches.

An "acre-foot" is equivalent to 43,560 cubic feet and is the quantity 

required to cover an acre to the depth of 1 foot. The term is commonly used in connection with storage for irrigation.

In the Territory of Hawaii a unit commonly used in connection with 

the measurement of Water is the "million gallons." This is used with 

two meanings (1) to indicate a rate of flow and (2) to express an 

actual quantity of water. In the former sense "milling gallons per 24 

hours" is inferred, 1,000,000 gallons being taken as the unit of quantity, and 24 hours as the unit of time. With this meaning the term is 

generally used in connection with pumping and irrigation. In the 

latter sense "million gallons" as an absolute quantity is used in the 

measurement of storage capacities of reservoirs.

The following convenient approximate relations exist between 

second-feet, million gallons per 24 hours, and acre-feet: 1 secondfoot flowing 24 hours equals about 2 acre-feet; 1,000,000 gallons 

equals about 3 acre-feet; and 1 second-foot equals approximately 

two-thirds million gallons per 24 hours.

"Man's Water" is an irrigator's term also in common use in Hawaii. 

It signifies the amount of water that one irrigator can properly handle 

in the field. It varies greatly, being dependent upon the condition of 

the furrows, the age of the crop, and the skill and individuality of the 

irrigator. Some measurements indicate that it is about 0.75 secondfoot. It may be almost any quantity under 1 second-foot, 

14694° ws? 336 14 2
18 WATER RESOURCES OF HAWAII, 1912.

CONVENIENT EQUIVALENTS.

The following is a list of convenient equivalents for use in hydraulic 

computations:

Table for converting discharge in second-feet into run-off in acre-feet.

Discharge

feet).

1

2

3

4

5

6

7

8

9

Run-off (acre-feet).

1 day.

1.983

3.967

5.950

7.934

9.917

11.90

13.88

15.87

17.85

28 days.

55.54

111.1

166.6

222.1

277.7

333.2

388.8

444.3

499.8

29 days.

57.52

115.0

172.6

230.1

287.6

345.1

402.6

460.2

517.7

30 days.

59.50

119.0

178.5

238.0

297.5

357.0

416.5

476.0

535.5

31 days.

61.49

123.0

184.5

246.0

307.4

368.9

430.4

491.9

553.4

NOTE. For partial month multiply values for one day by the number of days.

1 second-foot equals 7.48 United States gallons per second; equals 448.8 gallons per 

minute; equals' 646,272 gallons for one day.

1 second-foot for one year covers 1 square mile 1.131 feet or 13.572 inches deep. 

1 second-foot for one year equals 31,536,000 cubic feet. 

1 second-foot equals about 1 acre-inch per hour. 

1 second-foot for one day covers 1 square mile 0.03719 inch deep. 

1 second-foot for one day equals 1.983 acre-feet. 

1,000,000 United States gallons per day equals 1.55 second-feet. 

1,000,000 United States gallons equals 3.07 aere-feet. 

1,000,000 cubic feet equals 22.95 acre-feet. 

1 acre-foot equals 325,850 gallons.

1 inch deep on 1 square mile equals 2,323,200 cubic feet. 

1 inch deep on 1 square mile equals 0.0737 second-foot per year. 

1 foot equals 0.3048 meter. 

1 mile equals 1.60935 kilometers. 

1 mile equals 5,280 feet. 

1 acre equals 0.4047 hectare. 

1 acre equals 43,560 square feet. 

1 acre equals 209 feet square, nearly. 

1 square mile equals 2.59 square kilometers. 

1 cubic foot equals 0.0283 cubic meter. 

1 cubic foot equals 7.48 gallons. 

1 cubic foot of water weighs 62.5 pounds. 

1 cubic meter per minute equals 0.5886 second-foot. 

1 horsepower equals 550 foot-pounds per second. 

1 horsepower equals 76.0 kilogram-meters per second. 

1 horsepower equals 746 watts. 

1 horsepower equals 1 second-foot falling 8.80 feet. 

1J horsepower equals about 1 kilowatt.

mil* * -11 Sec.-ft.XfaU in feet . ,

To calculate water power quickly: jj_____ =net horsepower on water

wheel realizing 80 per cent of theoretical power.
WATER RESOURCES OF HAWAII, 1912. 19

OFFICE METHODS OF COMPUTING AND STUDYING 

DISCHARGE AND RUN-OFF.

At the end of each year the field or base data for current-meter 

gaging stations, consisting of daily gage heights, discharge measurements, and notes from observers' books are assembled. The measurements are plotted on cross-section paper and rating curves are drawn 

wherever feasible. The rating tables prepared from these curves are 

then applied to the tables of daily gage heights to obtain the daily 

discharge, and from these applications the tables of monthly discharge and run-off are computed.

 Rating curves are drawn and studied with special reference to the 

class of channels which they represent. The discharge measurements for all classes of stations, when plotted with gage heights in 

feet as ordinates and discharges in second-feet as abscissas, define 

rating curves which are generally more or less parabolic in form. 

For many stations curves of area in square feet and mean velocity 

in feet per second are also constructed to the same scale of ordinates 

as the discharge curve. These are used mainly to extend the discharge curves beyond the limits of the plotted discharge measurements, to check the form of the discharge curve, and to determine 

and eliminate erroneous measurements.

For every rating table the following assumptions are made for the 

period of application of the table: (a) That the discharge is a function of and increases gradually with the stage; (&) that the discharge 

is the same whenever the stream is at a given stage, and hence such 

changes in conditions of flow as may have occurred during the period 

of application are eith£r compensating or negligible, except that the 

rating, as stated in the footnote of each table, is not applicable for 

periods during which the channel was obstructed; (c) that the increased and decreased discharge due to change of slope on rising and 

falling stages is either negligible or compensating.

As already stated, the gaging stations may be divided into several 

classes, as indicated in the following paragraphs:

The stations of class 1 represent the most favorable conditions for 

an accurate rating and are also the most economical to maintain. 

The bed of the stream is usually composed of rock and is not subject 

to the deposit of sediment and loose material. This class includes 

also many stations located in a pool below which is a permanent 

rocky riffle that controls the flow like a weir. Provided the control 

is sufficiently high and close to the gage to prevent cut and fill at the 

gaging point from materially affecting the slope of the water surface, 

the gage height will for all practical purposes be a true index of the 

discharge. Discharge measurements made at such stations usually
20 WATEE RESOURCES OF HAWAII, 1912.

plot within 2 or 3 per cent of the mean discharge curve, and the 

rating developed from that curve represents a very high degree of 

accuracy.

Class 2 comprises mainly stations on rough, mountainous streams 

with steep slopes. The beds of such streams are, as a rule, comparatively permanent during low and medium stages, and when the 

flow is sufficiently well defined by an adequate number of discharge 

measurements before and after each flood the stations of this class 

give nearly as good results as those of class 1. As it is seldom 

possible to make measurements covering the time of change at 

flood stage, the assumption is of ten'made that the curves before 

and after the flood converged to a common point at the highest 

gage height recorded during the flood. Hence the only uncertain 

period occurs during the few days of highest gage heights covering 

the period of actual change in conditions of flow.

Class 3 includes those stations where the stream bed is of a shifting 

character, or the controlling section below the gage frequently 

changes owing to cutting out by the current and the filling in of sand, 

gravel, and drift. In some cases in Hawaii changes are caused by 

the growth of vegetation in the stream bed. No absolute rule 

can be laid down for stations of this class. Each rating curve must 

be constructed mainly on the basis of the measurements of the current year, the engineer being guided largely by the history of the 

station and the following general law: If all measurements ever made 

at a station of this class are plotted on cross-section paper, they will 

define a mean curve which may be called a standard curve. It has 

been found in practice that if after a change caused by high stage a 

relatively constant condition of flow occurs at medium and low 

stages, all measurements made after the change will plot on a smooth 

curve which is practically parallel to the standard curve with respect 

to ordinates or gage heights. This law of the parallelism of rating 

curves is the fundamental basis of all ratings and estimates at stations 

with semipermanent and shifting channels. It is not absolutely correct, but, with few exceptions, answers all the practical requirements 

of estimates made at low and medium stages after a change at a high 

stage. This law appears to hold equally true whether the change 

occurs at the measuring section or at some controlling point below. 

Tha change is, of course, fundamentally due to change in the channel caused by cut or fill, or both, at or near the measuring section. 

For all except small streams the changes in section usually occur at 

the bottom. The following simple but typical examples illustrate 

this law:

(a) If 0.5 foot of planking were to be nailed on the bottom of a wellrated wooden flume of rectangular section, there would result, other 

conditions of flow being equal, new curves of discharge, area, and
OFFICE METHODS. 21

velocity, each plotting 0.5 foot above the original curves when 

referred to the original gage. In other words, this condition would 

be analogous to a uniform fill or cut in a river channel which either 

reduces or increases all three values of discharge, area, and velocity 

for any gage height. In practice, however, such ideal conditions 

rarely exist.

(6) In the case of a cut or fill at the measuring section, there is a 

marked tendency toward decrease or increase, respectively, of the 

velocity. In other words, the velocity has a compensating effect, and 

if the compensation is exact at all stages the discharge at a given 

stage will be the same [under both the new and the old conditions.

(c) In the case of ijuaiform change along the crest of a weir or 

rocky control, the are^t curve will remain the same as before the 

change, and it can be shown that here again the change in velocity 

curve is such that it will produce a new discharge curve essentially 

parallel to the original discharge curve with respect to their ordinates.

Of course, in actual practice such simple changes of section do not 

occur. The changes are complicated and lack uniformity, a cut at 

one place being largely offset by a fill at another, and vice versa. 

If these changes are very radical and involve large percentages of 

the total area as, for example, on small streams there may result 

a wide departure from the law of parallelism of rating curves. In 

complicated changes of section the corresponding changes in velocity 

which tend to produce a new parallel discharge curve may interfere 

with each other materially, causing eddies, boils, backwater, and 

radical changes in slope. In such extreme conditions, however, the 

measuring section would more properly fall under class 4 and'would 

require very frequent measurements of discharge. Special stress is 

laid on the fact that in the lack of other data to the contrary the 

utilization of this law 4ill yield the most probable results.

Slight changes at low or medium stages of an oscillating character 

are usually averaged tiy a mean curve drawn among them parallel 

to the standard curve., and if the individual measurements do not 

vary more than 5 per cent from the rating curve the results are 

considered good for stations of this class.

Class 4 comprises stations on streams that have soft, muddy, or 

sandy beds. Good results can be obtained from such sections only

by frequent discharge measurements, the frequency ranging from a

measurement every two or three weeks to a measurement every day, 

according to the rate of diurnal change in conditions of flow. These 

measurements are plotted and a mean or standard curve drawn 

among them. It is assumed that there is a different rating curve 

for every day of the year and that this rating is parallel to the standard curve with respect to their ordinates. On the day of a measurement the rating curve for that day passes through that measurement.
22 WATEE KESOUKCES OF HAWAII, 1912.

For days between successive measurements it is assumed that the 

rate of change is uniform, and hence the ratings for the intervening 

days are equally spaced between the ratings passing through the two 

measurements. This method must be modified or abandoned 

altogether under special conditions. Personal judgment and a 

knowledge of the conditions involved can alone dictate the course 

to pursue in such cases.

The computations have as a rule been carried to three significant 

figures. Computation machines and the 20-inch slide rule have 

been generally used. All computations are carefully checked.

After the computations have been completed they are entered in 

tables and carefully studied and intercompared to eliminate or 

account for all gross errors so far as possible. Missing periods are 

filled in, so far as feasible, by means of comparison with records for 

adjacent streams. The attempt is made to complete years or periods 

of discharge, thus eliminating fragmentary and disjointed records. 

Full notes accompanying such estimates follow the daily and monthly 

discharge tables.

EXPLANATION OP TABLES.

For each regular current-meter gaging station are given in general 

the following data: Description of station, list of discharge measurements, table of daily gage height, table of daily discharge, table of 

monthly and yearly discharge, and run-off in acre-feet. For stations 

located at weirs or dams the gage-height table is omitted.

All rates of flow are expressed as second-feet, because distances and 

depths are measured in feet, and velocities in feet per second. The 

flow is thus obtained in cubic feet per second, or more briefly in 

"second-feet." The term "million gallons per 24 hours" is not used 

except in a few tables where data have been furnished in these 

units by private corporations. "Million gallons per 24 hours" is 

not a primary but a derived unit. To convert second-feet into 

million gallons per 24 hours multiply by 0.646.

In addition to statements regarding the location and installation 

of current-meter stations, the descriptions give information in regard 

to any conditions which may affect the constancy of the relation of 

gage height to discharge, covering such points as shifting channels and 

backwater; also information regarding diversions which decrease the 

total flow at the measuring section. Statements are also made regarding the accuracy and reliability of the data.

The discharge-measurement table gives the results of the discharge 

measurements made during the year, including the date, name of 

hydrographer, gage height, and discharge in second-feet.

The table of daily gage height records the daily fluctuations of the 

surface of the river as found from the mean of the gage readings taken
EXPLANATION OF TABLES. 23

each day. At most stations the gage is read in the morning and in 

the evening unless a continuous record is obtained by means of an 

automatic instrument. The gage height given hi the table represents 

the elevation of the surface of the water above the zero of the gage. 

All gage heights affected by shifting conditions of flow or by backwater from obstructions are published as recorded, with suitable footnotes. The rating table is not applicable for such periods unless the 

proper corrections to the gage heights are known and applied. Attention is called to the fact that the zero of the gage is placed at an arbitrary datum and has no relation to zero flow or the bottom of the river. 

In general the zero is located somewhat below the lowest known 

flow, so that negative readings shall not occur.

The discharge measurements and gage heights are the base data 

from which rating tables, daily discharge tables, and monthly discharge tables are computed.

The rating table gives, either directly or by interpolation, the 

discharge in second-feet corresponding to every stage of the river 

recorded during the period for which it is applicable. It is not published in this report, but can be determined from the daily gage 

heights and daily discharges, for the purpose of verifying the published results as follows:

First plot the discharge measurements on cross-section paper with 

gage height in feet as ordinates and discharge hi second-feet as 

abscissas. Then tabulate a number of gage heights taken from the 

daily gage-height table for the complete range of stage given and the 

corresponding discharges for the days selected from the daily discharge 

table and plot the values on cross-section paper. The last points 

plotted will define the rating curve used and will lie among the plotted 

discharge measurements. After drawing the rating curve, a table 

can be prepared by scaling off the discharge in second-feet for each 

tenth foot of gage height. These values should be so adjusted that 

the first differences shall always be increasing or constant, except for 

known conditions of backwater.

The table of daily discharge gives the discharge in second-feet corresponding to the observed gage height as determined from the rating 

table, the number of significant figures used varying with the size 

of the discharge. For quantities below 0.5 second-foot the daily 

discharge is carried to hundredths; from 0.5 to 9.9 second-feet, to 

tenths only; from 10 to 99 second-feet all decimals are omitted, and 

above 100 second-feet only three significant figures are used.

In the table of monthly discharge the column headed "Maximum" 

gives the mean flow, as determined from the rating table, for the day 

when the mean gage height was highest. As the gage height is the 

mean for the day, it does not indicate correctly the stage when the 

water surface was at crest height, and the corresponding discharge
24 WATER RESOURCES OF HAWAII, 1912.

was consequently larger than given in the maximum column. Likewise in the column of "Minimum" the quantity given is the mean 

flow for the day when the mean gage height was lowest. The column 

headed "Mean" is the average flow in cubic feet for each second during the month. On this the computations for the remaining columns, 

which are defined on page 17, are based.

ACCURACY AND RELIABILITY OF FIELD DATA AND 

COMPARATIVE RESULTS.

Practically all discharge measurements made under fair conditions 

are well within 5 per cent of the true discharge at the time of observation. Inasmuch as the errors of meter measurements are largely 

compensating, the mean rating curve, when well defined, is much 

more accurate than the individual measurements. Numerous tests 

and experiments have been made to test the accuracy of currentmeter work. These show that it compares very favorably with the 

results from standard weirs, and, owing to simplicity of methods, 

usually gives results that are much more reliable than those from 

the ordinary weir used under conditions widely different from those 

under which the weir formula was derived.

The work is, of course, dependent on the reliability of the observers. 

With relatively few exceptions, the observers perform their work 

honestly. Care is taken, however, to watch them closely and to 

inquire into any discrepancies. It is, of course, obvious that one 

gage reading a day does not always give the mean height for that 

day. As an almost invariable rule," however, errors from this source 

are compensating and virtually negligible in a period of one month, 

although a single day's reading may, when taken by itself, be considerably in error.

In order to give engineers and others information regarding the 

probable accuracy of the computed results, footnotes are added to the 

daily discharge tables, stating the probable accuracy of the rating 

tables used, and an accuracy column is inserted in the monthly discharge table. For the rating tables "well defined" indicates in general that the rating is probably accurate within 5 per cent; "fairly 

well defined," within 10 per cent; "poorly defined" or "approximate," within 15 to 25 per cent. These notes are very general and 

are based on the plotting of the individual measurements with reference to the mean rating curve.

DIVISION OF WORK.

On account of the isolation of the different islands of the Territory 

an engineer or employee was assigned to take charge of the field work 

on each one of the four larger islands with temporary headquarters on 

that island.
GAGI35TG STATIONS. 

Persons in charge of field work.

25

Island. In charge. Temporary headquarters.

Oahu.

Kauai. 

Maui..

Hawaii.

W. F. Martin, district engineer (Jan. 1 to Mar. 27).... 

C. H. Pierce, acting district engineer (Mar. 28 to

Aug. 13). 

G. K. Larrison, district engineer (Aug. 14 to

Dec. 31). 

W.V. Hardy, field assistant.........................

J. B. Stewart, clerk acting field assistant (Jan. 1 to

Nov. 30). 

C. T. Bailey, assistant engineer (Dec. 1-31)...........

C. H. Pierce, assistant engineer (Jan. 1 to Mar. 27)....

E. O. Christiansen, assistant engineer (July 10 to

Dec.31).

Honolulu (permanent).

Waimea. 

Wailuku.

Hilo.

Office Engineer J. C. Dort, junior engineer, at Honolulu, October 

29 to December 31, assisted on Oahu field work.

Ratings, applications, computations, etc., were made by G. K. 

Larrison, J. C. Dort, E. O. Christiansen, C. T. Bailey, W. V. Hardy, 

E. E. Goo, G. R. White, S. W. Dort, R. M. S. Goo, H. L. Book, H. H. 

Kennedy, H. M. Kennedy, and E. J. Howard. The report was edited 

by Mrs. B. D. Wood.

GAGING STATIONS MAINTAINED IN HAWAII.

The following list comprises the gaging stations maintained in 

Hawaii by the United States Geological Survey and cooperative 

parties. The stations are arranged by stream basins and appear in 

systematic order for the several islands, tributaries of main streams 

being indicated by indention. The date refers to the years or parts 

of years for which records are available. A dash following the date 

indicates that the station was being maintained December 31, 1912.

KATTAI ISLAND.

jWaknea River near Waimea, 1910-

' Pooinau River:

' Kawaikoi Stream near Waimea, 1909-

Waiakoali Stream neat Waimea, 1909- 

Mohihi Stream near Waimea, 1909- 

Waialae Stream near Waimea, 1910- 

Kekaha ditch at camp No. 1, near Waimea, 1910- 

Kekaha ditch at flume No. 2, near Waimea, 1910- * 

Kekaha ditch at siphon, near Waimea, 1910- 

- Kekaha ditch at tunnel No. 12 weir, near Waimea, 1910- 

Waimea ditch near Waimea, 1911- 

Kamenehune ditch near .Waimea, 1911- 

Makaweli River near Waimea, 1911- 

Mokuone River:

Halekua Stream near Waimea, 1912- 

Olokele River:

Olokele ditch at tunnel No. 12, near Makaweli, 1910- 

Olokele ditch near Waimea, 1912- 

Poowaiomahaihai ditch near Waimea, 1911-
26 WATER RESOURCES OF HAWAII, 1912.

Hanapepe River at Hanapepe Falls, near Eleele; 1911- 

Hanapepe River at Kaula, near Eleele, 1910-

Hanapepe ditch at Hanapepe Falls, hear Eleele, 1911-

Hanapepe ditch at Koula, near Eleele, 1910-

Hanapepe ditch at weir, near Hanapepe, 1910-

East Branch of Hanapepe River at Hanapepe Falls, near Eleele, 1911-

Hiloa ditch at Hanapepe Falls, near Eleele, 1911- 

Huleia River, near Lihue, 1912- 

Hanamaula River at Kapaia near Lihue, 1911- 

Wailua River:

South Fork of Wailua River at siphon, near Lihue, 1910-11. 

South Fork of Wailua River above Waiehu Falls, near Lihue, 1911- 

Lihue ditch near Lihue, 1910- 

Hanamaulu ditch near Lihue, 1910- 

North Fork of Wailua River near Lihue, 1910-

East Branch of North Fork of Wailua River near Lihue, 1912- 

Uhau lole Stream at 750-foot elevation, near Lihue, 1912- 

Keahua Stream at 750-foot elevation, near Lihue, 1912- 

Kawi Stream at 750-foot elevation, near Lihue, 1912- 

Kanaha ditch near Lihue, 1910-

Konohiki Stream at Makakualele (mauka) weir, near Kapaa, 1911- 

Konohiki Stream at Makakualele (makai) weir, near Kapaa, 1912- 

Kaehulua Stream at Kainahola (mule stable) weir, near Kapaa, 1911- 

North Fork of Kaehulua Stream at Kuhinoa weir, near Kapaa, 1911- 

South Fork of Kaehulua Stream at Wainamuamu weir, near Kapaa, 1911- 

Kapaa River, at Kapahi, near Kapaa, 1910- 

Akulikuli Springs near Kapaa, 1909- 

Kapahi ditch at Kapahi, near Kapaa, 1909-

Tunnel ditch at Kapahi, near Kapaa, 1909-11. 

Kapaa ditch at Kapahi, near Kapaa, 1909-11. 

Pipe ditch at Kapahi, near Kapaa, 1909-11. 

Kealia Stream:

Kaneha ditch at weir near Kealia, 1909- 

Anahola River at 1,140-foot elevation, near Kealia, 1912- 

Anahola River above dam at Kiokala, near Kealia, 1910- 

Anahola River at Kiokala dam, near Kealia, 1910-11. 

Anahola ditch at Kiokala, near Kealia, 1909- 

Auahola ditch at makai weir, near Kealia, 1909-11. 

Kalihiwai River near Kilauea, 1912- 

Hanalei River near Hanalei, 1911- 

China ditch near Hanalei, 1911- 

Kuna ditch near Hanalei, 1912- 

LumahaiUiver near Wainiha, 1912- 

Wainiha River near Wainiha, 1911-

Wainiha canal at intake, near Wainiha, 1910- 

Wainiha canal at tunnel No. 18, near Wainiha, 1911. 

Wainiha canal at tailrace, near Wainiha, 1911.

OAHtT ISLAND.

Palolo Stream:

Waiomao Stream at 900-foot evelation, near Honolulu, 1911- 

Waiomao Stream above Pukele Stream, near Honolulu, 1911- 

Pukele Stream at Mahoe Springs, near Honolulu, 1912-

Manoa Stream at upper end of valley, near Honolulu, 1910-
GAGING STATIONS. 27

Manoa Stream at College of Hawaii, near Honolulu, 1909-10; 1912- 

Manoa Stream at Waialae Road, near Honolulu, 1910-12. 

Pauoa Stream below Kahuawai Springs, near Honolulu, 1911- 

Kahuawai Spring, near Honolulu, 1912- 

Nuuanu Stream at Kuakini Street, Honolulu, 1911-12.

Lulumaho ditch in Nuuaijiu Valley, near Honolulu, 1913- 

, Luakaha weir in Nuuanu Valley, near Honolulu, 1910- 

Kaukonahua Stream:

South Fork of Kaukonahua Stream, near Wahiawa, 1911.

North Fork of Kaukonahua Stream, near Wahiawa, 1911.

Wahiawa Reservoir ditchy near Wahiawa, 1910-11. 

Kaipapau Stream, near Hauula, 1906-7. 

Kaluanui Stream near Hauula, 1906-7. 

Punaluu Stream, near Hauula, 1906-7.

Waikane Stream at lower Waikane Valley, near Waikane, 1912. 

Waiahole Stream at Manianiaiila, near Waikane, 1911- 

Waiahole Stream at Waiahole, near Waikane, 1911-

Waihi Stream, near Waikane, 1911.

Halona Stream, near Waifeane, 1911.

Waianu Stream, near Waikane, 1911. 

Kahanaiki Stream near Waimanalo, 1912- 

Kailua Stream near Waimanalo, 1912- 

Pohakea Stream near Waimanalo, 1912- 

Kamakalepo Stream near Waimanalo, 1912- 

Kaimi Stream near Waimanalo, 1912- 

Makawao Stream near Waimaftalo, 1912- 

Makawao ditch near Waimanalo, 1912- 

Wong Leong ditch near Waimanalo, 1912- 

Waimanalo ditch below reservoir, near Waimanalo, 1912- 

Pump ditch near Waimanalo, 1912-

MAtTI ISLAND. 

West Haul.

Kahakuloa Stream at Kahakuloa, near Waihee, 1912- 

Waihee Stream near Waihee, 1910-

Waihee canal near Waihee, 1910- . Waihee canal at weir near Wailuku, 1911-

Spreckels ditch near Waihee, 1910-

Spreckels ditch at Waiale weir, near Wailuku, 1910-11. 

Waiehu Stream:

North Waiehu Stream near Wailuku, 1911-

North Waiehu ditch near Wailuku, 1910-11.

South Waiehu Stream neajr Wailuku, 1910- 

lao Stream near Wailuku, 1910-

Maniania ditch near Wailuku, 1910- 

Waikapu Stream near Waikapu, 1910-

South Side Waikapu ditch near Waikapu, 1910-

Palolo (Everett) ditch near Waikapu, 1910- 

Ukumehame Stream near Olowalu, 1911- 

Olowalu Stream:

Olowalu ditch No. 1 near Olowalu, 1911- 

Launiupoko Stream near Lahaina, 1911-
28 WATER RESOURCES OF HAWAII, 1912.

Kauaula Stream near Lahaina, 1911-

Kauaula ditch near Lahaina, 1911-

Kauaula weir No. 1 near Lahaina, 1901.

Kauaula weir No. 2 near Lahaina, 1901.

Kauaula weir No. 3 near Lahaina, 1901. 

Lahainaluna Stream near Lahaina, 1911-

Lahainaluna weir No. 1 near Lahaina, 1901.

Lahainaluna weir No. 2 near Lahaina, 1901. 

Kahoma Stream near Lahaina, 1911-

Kahoma Stream at weir No. 1, near Lahaina, 1901.

Kahoma Stream at weir No. 2, near Lahaina, 1901.

Kahoma ditch at weir near Lahaina, 1911- 

Honokawai Stream near Lahaina, 1911.

Honokawai ditch near Lahaina, 1912-

Honokawai weir No. 1 near Lahaina, 1901. 

Honolua Stream near Honokahau, 1911.

Honolua ditch near Honokahau, 1911- 

Honokahau Stream near Honokahau, 1911.

Honokahau ditch at intake, near Honokahau, 1907-

Honokahau ditch above Honolua Stream, near Honokahau, 1910-11.

Honokahau ditch at Honokawai weir, near Lahaina, 1910-

East Haul. 

Koolau ditch region:

Koolau ditch near Keanae, 1910-

Koolau ditch at Alo division weir, near Huelo, 1908-1911. 

Spreckels ditch region:

Haipuaena Stream near Huelo, 1910-

jpuohakamoa Stream near Huelo, 1910-

Alo Stream near Huelo, 1910-

Waikamoi Stream near, Huelo, 1910-

Oopuola Stream near Huelo, 1910-

Spreckels ditch at station No. 1, near Huelo, 1910-

Spreckels ditch at atstion No. 2, near Huelo, 1911-

Spreckels ditch at station No. 3, near Huelo, 1910-

Spreckels ditch at station No. 4, near Huelo, 1910-

Spreckels ditch at station No. 5, near Huelo, 1911-

Spreckels ditch at station No. 6, near Huelo, 1911-

Spreckels ditch at station No. 7, near Huelo, 1911-

Spreckels ditch at station No. 8, near Huelo, 1911- 

Center ditch region:

Center ditch near Huelo, 1910- 

Hamakua ditch region:

Nailiilihaele Stream near Huelo, 1910-

Kailua Stream near Huelo, 1910-

Oanui Stream near Huelo, 1910-11.

Hoolawaliilii Stream near Huelo, 1910-

Hoolawanui Stream near Huelo, 1910-

Honopou Stream near Huelo, 1910-

Halehaku Stream at dam, near Huelo, 1910-11. 

Halehaku Stream weir near Huelo, 1910-

Opana Stream near Huelo, 1910- 

Opana ditch near Huelo, 1910-

New Hamakua ditch at Nailiilihaele weir, near Huelo, 1910-
GEOGRAPHY OF THE HAWAIIAN ISLANDS. 29

Hamakua ditch region Continued.

New Hamakua ditch at Halehaku weir, near Huelo, 1910- 

New Hamakua ditch at station No. 1, near Huelo, 1912- 

New Hamakua ditch at station No. 2, near Huelo, 1912- 

New Hamakua ditch at station No. 3, near Huelo, 1912- 

New Hamakua ditch at station No. 4, near Huelo, 1912- 

New Hamakua ditch at station No. 5, near Huelo, 1912- 

Old Hamakua ditch at Opana weir, near Huelo, 1910- 

Kaluanui ditch at Puuomalei near Hamakuapoko, 1910- 

Lowrie ditch at Opana weir, near Huelo, 1910- 

Haiku ditch at Peahi weir, near Huelo, 1910-

 .. HAWAII ISLAND. Hilo group:

Wailuku River near Hilo, 1911- 

Honolii River at Kaiwiki, near Hilo, 1911- 

Honolii ditch at Kaiwiki, near Hilo, 1911. 

Kawainui River at Kawainui, near Pepeekeo, 1911- 

4 stations at Piihonua, near Hilo, 1912. 

81 stations at 2,700 feet level, in forest back of Hilo, 1911- 

Hamakua group:

Kawainui Branch of Waipio River, near Waipio, 1911- 

Waipio River below Koiawe Stream, near Waipio, 1911- 

Waipio River below Waima Stream, near Waipio, 1911- 

Waipio River at 360 feet elevation, near Waipio, 1901-2. 

New Hamakua ditch at Waima Stream, near Waipio, 1912- 

New Hamakua ditch'at main weir near Kukiuhaele, 1911- 

Kawainui Stream at 2,120 feet elevation, near Waipio, 1901-2. 

Kawainui Stream at 1,435 feet elevation, near Waipio, 1901-2. 

Kawainui Stream at 775 feet elevation, near Waipio, 1901-2.

Branch No. 3 of Kawainui Stream at 1,700 feet elevation, near Waipio, 1901-2.

Branch No. 2 of Kawainui Stream at 1,405 feet elevation, near Waipio, 1901-2.

Branch No. 1 of Kawainui Stream at 1,380 feet elevation, near Waipio, 1901-2. 

Alakahi Stream at 1,200 feet elevation, near Waipio, 1901-2. 

Alakahi Stream at 730 feet elevation, near Waipio, 1901-2. 

Koiawe Stream at 1,120 feet elevation, near Waipio, 1901-2. 

Koiawe Stream at 610 feet elevation, near Waipio, 1901-2. 

Waima Stream at 790 feet elevation, near Waipio, 1901-2. 

Waima Stream at 385 feet elevation, near Waipio, 1901-2. 

Kohala group:

Honokane Stream:

East Branch of Honokane Stream at 1,300 feet elevation, near Honokane, 1901.

East Branch of Honokane Stream at 770 feet elevation, near Honokane, 1901.

West Branch of Honokane Stream at 1,370 feet elevation, near Honokane,190l.

West Branch of Honokane Stream at 775 feet elevation, near Honokane, 1901.

Kohala ditch near Kohala, 1907-

GEOGBAPHY OF THE HAWAIIAN ISLANDS. 1

The Hawaiian Islands are situated in the north Pacific Ocean due 

west of the central part of Mexico and about 2,100 miles southwest 

of San Francisco, from which Honolulu may be reached in about 6 

days. Button 2 has described the group as consisting of 12 islands 

i Adapted from Dutton, G. £., Hawaiian volcanoes: U. 8. Oeol. Survey Fourth, Ann. Kept., pp. 

81-212,1884. 

» Op. dt., p. 81.
30 WATER RESOURCES OP HAWAII, 1912.

eight inhabited and four mere barren rocks lying between meridians 

154° 30' and 160° 30' west of Greenwich and between parallels 18° 40' 

and 22° 15' north; but northwest of this principal part of the group 

are a dozen smaller low islands and reefs which are shown on the 

charts and over which the Territorial government has authority. 

The westernmost of these, which are known as the Ocean Islands, lie 

about in longitude 178° 30' west very nearly the antipodes of 

Greenwich and 29° north. The archipelago, therefore, extends 

over nearly 25° of longitude, or about 1,800 miles, 1 its form being 

rudely crescentic and its general trend northwest-southeast. Hitchcock * gives the following list of the islands in order from west to east 

with areas and extreme altitudes.

Islands of the Hawaiian Archipelago.

Low islands and reefs.3

Altitude 

(feet).

Ocean Islands............................................... 10

Midway Islands.............................................. 57

Gambia Shoal.

Pearl and Hermes reefs.

Lisiansky Island............................................. 50

Laysan Island.............................................. 25

Maro Keef. 

Dowsett's Reef.

The lowest of the high islands.

Gardiner Island.............................................. 170

French Frigate Shoal......................................... 120

Necker Island.............................................. 300

Frost Shoal.

Nihoa or Bird Island........................................ 903

High inhabited islands, with area and highest point.

Niihau (97 square miles)..................................... 1,300

Cinder cones adjoining, named Kaula and Lehua. 

Kauai (547 square miles; highest point, Waialeale)............. 3 5,170

Oahu (598 square miles; highest point, Kaala)................. 4,030

Molokai (261 square miles; highest point, Komokoa).......... 4,958

Lanai (139 square miles)..................................... 3,400

Maui (728 square miles; highest point, Haleakala)............. 3 10,350

Kahoolawe (69 square miles; highest point, Moaulu Hill)...... 1,472

Hawaii (4,015 square miles; highest point, Mauna Kea)........ 13,825

Of these, Hawaii, Maui, Oahu, Kauai, and Molokai are by far the 

most important in area and in number of inhabitants.

All these islands are volcanic. No rocks other than volcanic are 

found on any of them except a few remnants of raised sea beaches

. i Hitchcock, C. H., Hawaii and its volcanoes, p. 1, Honolulu, 1909. 

* May be swept by storm waves. 

8 Hitchcock's figures, 5,250 and 10,032, revised from more recent maps.
GEOGRAPHY OF THE HAWAIIAN ISLANDS. 31

composed of consolidated coral sands. All the larger ones are very 

mountainous and lofty. The culminating points of the island of 

Hawaii are Mauna Kea, 13,825 feet, and Mauna Loa, 13,675 feet 

above sea level. The summit of Haleakala, on East Maui, is 10,350 

feet, and the mountains of West Maui attain 5,900 feet. Oahu has 

a peak on the eastern side of the island 3,100 feet high, and another on 

the western side 4,030 feet high. The loftiest point of Kauai is about 

5,170 feet above the sea. Deep-sea soundings in the vicinity have 

disclosed the fact that these volcanic piles are only the summits of 

gigantic mountain masses rising abruptly from the bottom of the 

Pacific, which for many hundreds of miles around them is only 

moderately diversified. The slopes of Mauna Loa east, west, and 

south descend beneath the surface of the ocean with a gradient fully 

equal to if not greater than the visible slope of its flanks. The submarine slopes of all the other islands in directions perpendicular to 

the principal axis of the group are equally great and possibly somewhat greater. The depths attained by these continuous slopes 

within 30 to 50 miles of the shores vary from 2,400 to 3,100 fathoms, 

or 14,000 to 19,000 feet. Mauna Loa and Mauna Kea, referred to 

their true bases at the bottom of the Pacific, are therefore mountains 

not far from 30,000 feet in height. In general the island group consists of the summits of a gigantic submarine mountain chain, projecting its loftier peaks and domes above the water.

On the island of Hawaii the volcanic forces are still in operation. 

On the' eastern portion of Maui they have rested at a very recent 

epoch. In the other islands they have long been extinct, and the 

piles they built up have been greatly ravaged by erosion. On 

Hawaii the large volcano Hualalai, just west of Mauna Loa, gave 

forth three eruptions in the early part of the present century, but 

has been dormant since 1811. Mauna Kea gives evidence of having 

reposed for many centuries or throughout a period that, historically considered, may have lasted some thousands of years; though, 

if we value time by the geologic scale, the date of its last activity 

would be regarded as very recent. Haleakala, on Maui, gives 

indications of considerably greater recency in its last eruptions 

than Mauna Kea, but the natives have no traditions of any outbreak from it, and we may infer that it has been quiet for several 

hundred years. With regard to the other volcanic centers, we have 

no means of judging the antiquity of their final action except the progress made by erosion in demolishing them, and this progress is, in every 

instance, considerable. It is most conspicuous on Kauai and Oahu, 

and almost equally so on Molokai and West Maui. From this it is 

inferred that the western islands of the group have longest enjoyed 

immunity from eruption. Kauai, especially, is frequently spoken of
32 WATER RESOURCES OF HAW AH, 1912.

as the oldest island of the group, and, judging from the amount of 

destruction wrought upon it by the eroding forces, the statement 

is in some measure apparently justified, but only to this extent, the 

period which has elapsed since the cessation of eruption has probably 

been longer there than in the other islands. It does not follow, 

however, that the eruptions began there any earlier than on Hawaii.

The one continuously active volcanic vent of the islands is Kilauea, 

far down on the eastern flank of Mauna Loa "the great mountain." 

No other volcano in the world approaches Mauna Loa in the vastness 

of its mass or in the magnitude of its eruptive activity. There are 

many volcanic peaks higher in the air, but most of them are planted 

upon elevated platforms, where they appear as mere cones of greater 

or less size. We do not know at what level the base of Mauna Loa is 

situated. We only know that it is below sea level, and probably far 

below it. But on the other hand, it may not be so low as the adjoining depths of the Pacific.

Mauna Kea "the white mountain" is also a colossus among 

volcanoes. The summit of Mauna Kea is a trifle higher than that 

of Mauna Loa, but its slopes are steeper and its base is therefore 

much smaller. The magnitude of Mauna Loa is due chiefly to the 

great area of its base, which is nearly elliptical in shape, with a major 

diameter of 74 miles and a minor of 53 miles, measured at sea level.

In the aggregate of its eruptions Mauna Loa is also unrivalled. 

Some of the volcanoes of Iceland have been known to disgorge at a 

single outbreak masses of lava fully equal to them. But in that 

island such intravasations are infrequent, and a century has elapsed 

since any of such magnitude have been emitted, though several of 

minor extent have been outpoured. The eruptions of Mauna Loa 

are all of great volume, and occur irregularly, with an average interval of about eight years. Taking the total quantity of material 

disgorged during the past century, no other volcano is at all comparable to it.

Mauna Loa and Kilauea are in many important respects abnormal 

volcanoes. Most notable is the singularly quiet character of their 

eruptions. Rarely are these portentous events attended by any of 

that extremely explosive action which is characteristic of nearly all 

other volcanoes. Only once or twice within the historic period have 

they been accompanied by earthquakes or subterranean rumblings. 

The vast jets of steam blown miles high, hurling stones, cinders, and 

lapilli far and wide, filling the heavens with vapor and smoke, and 

hailing down ashes and fragments over the surrounding regions, have 

never been observed here. Some action of this sort is indeed represented, but only in a feeble way. The lava wells forth like water 

from a hot, bubbling spring, but so mild are the explosive forces that
GEOGRAPHY OF THE HAWAIIAN ISLANDS. 33

the observer may stand to the windward of the grandest eruption, 

and so near the source that the heat will make the face tingle, yet 

without danger. Ordinarily the outbreak takes place without-warning and without the knowledge of the inhabitants, who first become 

aware of it at nightfall, when the sky is aglow and the fiery fountains 

are seen playing. As the news spreads, hundreds of people flock to 

it to witness the sublime spectacle and display almost as much eagerness to approach the scene of an eruption as the people of other 

countries show to get away from one.

The great magnitude of the individual eruptions of Mauna Loa 

and Kilauea, and the absence of fragmental products, supply an 

explanation of their abnormally flat profiles. Fragmental ejecta 

pile up around the vents from which they are projected; but great 

streams of fluent lava run far away from their sources. The large 

pits or so-called craters which are sunken in the summits Kilauea and 

Mauna Loa, and the still more remarkable one on Haleakala, are not 

entirely unparalleled, though their analogues in other regions are very 

uncommon.

In all those portions of the islands where quiet has long prevailed 

the scenery has habitudes of extreme boldness and animation. Cliffs, 

crags, and canyons are carved in the mountains with as much sharpness and spirited detail as in the plateau country of North America. 

In West Maui and Kauai may be found walled valleys -and amphitheaters which almost rival Yosemite. The windward fronts of 

Oahu and Molokai stand 3,000 to 4,000 feet high, and are carved in 

a manner which is rarely surpassed by the finest sculpture in the 

valley of the Colorado. On the weather sides of Hawaii and Maui 

the gentle slopes of the mountains terminate on the ocean in walls 

a few hundred feet high, and the platforms are gashed with canyon 

valleys that are marvels of beauty.

The climate of the islands presents considerations of very great 

interest. It is difficult to find anywhere any greater constancy of 

atmospheric conditions than those prevailing over the ocean within 

the heart of the trade-wind belt. The temperature varies but little 

from winter to summer, and the general drift of the atmosphere is 

rarely interfered with by storms and cyclones. And yet upon the 

islands themselves it may be said that there are almost as many 

climates as there are square leagues. And the differences of climatal 

condition exhibited by localities separated only half a dozen miles 

are extreme. As a general rule the windward sides are excessively 

rainy, the precipitation may exceed 400 inches in a year. The leeward sides are generally arid, but to this there are some striking 

exceptions, especially under the lee of Mauna Loa, where the rainfall 

is almost as great as on the weather side. 

14694° WSP 336 14 3
34 WATER RESOURCES OF HAWAII, 1912.

STATION RECORDS.

ISLAND OF KATJAI.

WAIMEA RIVER BASIN.

WAIMEA RIVER NEAR WAIMEA, KAtTAI.

Location. About 2 miles north of Waimea and 250 feet above ford. 

Becords available. July 9, 1910, to December 31, 1912. 

Ga,ge. Vertical and inclined staff read once daily; datum unchanged. 

Channel. Bottom covered with sand and bowlders; seems fairly permanent. 

Discharge measurements. Made from a wire suspension bridge. 

Accuracy. Records fair.

Discharge measurements of Waimea River near Waimea, Kauai, in 1912. 

[Hydrographer, W. V. Hardy.]

Date.

Mar.4. .......................

July 13.......................

July 14.......................

Nov.30.......................

Dec. 1........................

Gage 

height.

Feet. 

5.55

3.77

5.07

3.67

4.80

6.25.

Discharge.

Sec.-ft. 

178

5 45

87.2

.78

53.7

AA1

Date

Dec. 1....... .................

Do.......................

Do.......................

Do .......................

Dec. 10. ......................

height.

Feet. 

6.05

5.77

7.60

7.10

8.10

4.18

Discharge.

Sec.-ft. 

350

232

1,320

Q97

1,760

15.6

Daily gage height, in feet, of Waimea River near Waimea. Kauai, for 1912. 

[T. Mokuahakea, observer.]

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20. ..............

21............... 22........;......

23...............

24...............

25...............

26...............

27...............

28

29...............

30...............

31...............

Jan.

5.03

4.34

4.01

3.85

3.82

3.80

3.91

3.89

3.90

3.90

3.90

3.85

3.80

4.08

3.88

3.85

3.80

3.81

3.80

3.80

3.80

3.89

3.81

5.30

4.00

3.80

3.90

3.80

3.80

3.93

3.88

Feb.

3.90

3.90

4.01

4.75

4.01

3.93

3.70

3.70

3.70

3.90

3.81

3.80

3.80

3.80

3.82

3.89

3.90

3.80

3.80

3.81

4.80

6.03

4.90

5.80

4.22

4.01

5.09

3.91

6.20

Mar.

6.01

6.08

5.25

A OJ.

5 7ft

6.10

4 no

6.50

6.10

6.00

4.90

5.00

4.30

4.10

4.00

3 on

4.50

4.30

4.00

3.90

7.30

4.50

4.08

3.90

3.85

3.70

5.50

Apr.

5.30

5.07

4.01

6.03

6.00

6.20

6.00

7.50

7 00

6.98

5.70

5.50

4.91

4.13

<; on

7.00

5.00

4.30

4.15

4.00

3.80

3.80

3.80

1 OH

3.90

3.80

3.75

3

7C

May

3 64

3.75

3.80

4 no

3.80

3.75

3.72

3.70

3.70

3.70

3.70

3.70

5 7ft

4.20

3.90

3.84

3.75

3.73

3.70

3.70

3.80

4.30

5 40

3.80

3.75

7 f((\

5.30

4.01

3.85

June

3.80

3.70

3.65

3.70

3.70

3.65

3.62

3.60

3.65

3.65

3.60

3.60

3.70

3.69

3.67

s fin

3.60

3.60

3.60

3.65

3.68

3.72

3.65

3.63

3.90

3.81

3.80

3.71

3.90

3.70

July

3.70

3.70

3.70

3.70

3.70

3.70

3.70

3.70

3.75

5.35

4.01

3.89

3.85

6.40

4.30

3.90

3.90

3.89

3.80

3.80

3.90

3.88

3.80

3.75

3.70

3.70

3.60

3.69

3.67

3.65

4.10

Aug.

3.80

3.80

3.69

3.60

3.60

3.69

3.69

3.71

4.10

4.00

4.00

3.90

5.50

6.20

6.04

4 4ft

3.90

3.90

3.90

3.90

3.70

3.80

3.80

4.30

3.70

3.65

5.80

4.80

3.90

6.20

5.60

Sept.

4.00

5.30

4.20

3.90

3.80

7.40

4.90

4.00

3.96

3.93

3.85

3.81

 3.72

3.70

3.70

3.75

3.68

3.65

3.60

3.60

3.70

3.70

3.70

3.70.

3.70

3.70

3.70

3.70

3.81

3.67

Oct.

3.80

3.80

3.80

3.79

3.75

3.81

3.80

3.70

3.67

3.60

3.60

3.60

3.80

3.89

3.90

4.40

4.37

4.30

5.21

5.02

4.00

6.00

5.80

3.90

4.81

7.00

5.60

3.95

3.90

4.00

4.60

Nov.

4.00

3.97

3.90

3.83

3.81

3.80

3.80

3.70

6.30

4.20

3.80

3.80

3.70

3.70

3.98

4.00

3.99

3.93

3.90

3.81

3.80

3.71

3.70

3.70

3.70

3.70

3.70

3.70

3.70

4.25

Dec.

6.10

7.73

7.60

5.50

4.90

4.80

4.50

4.40

4.30

4.18

4.00

3.95

3.85

3.80

3.75

3.70

3.70

3.79

3.85

4.10

6.90

4.70

4.87

4.90

5.00

4.30

4.10

3.99

3.90

3.87

3.85
ISLAND OF KAUAI. 35 

Daily discharge, in second-feet, of Waimea River near Waimea, Kauai, for 1912.

Day.

1.........

2.........

3.........

4.........

5.........

6.........

7.........

8. ........

9. ........

10.........

11.........

12. ........

13.........

14.........

15.........

16.........

17.........

18.........

19.........

20.........

21.........

22.........

23.........

24.........

25.........

26.........

27.........

28.........

29.........

30.........

31.........

Jan.

84

21

6.9

3.2

2.6

2.2

4.4

3.9

4.1

4.1

4.1

3.2

2.2

9.3

3.7

3.2

2.2

2.4

2.2

2.2

2.2

3.9

2.4

130

6.6

2.2

4.1

2.2

2.2

4.8

3.7

Feb.

4.1

4.1

6.9

52

6.9

4.8

1.0

1.0

1.0

4.1

2.4

2.2

2.2

2.2

2.6

3.9

4.1

2.2

2.2

2.4

57

331

68

255

15

6.9

92.6

44

397

Mar.

324

350

551

120

16

226

357

6.6

255

540

357

320

68

80

30

19

10

6.6

4.1

30

1Q

10

6.6

4.1

1,070

30

9 q

4.1

3.2

1.0

174

Apr.

130

89

58

6.9

331

320

397

320

1,230

850

836

226

174

69.2

11.2

286

850

80

19

12

6.6

2.2

2.2

2.2

2.2

5.4

4.1

2.2

1.6

1.6

May.

0.5

1.6

2.2

2.2

6.6

2.2

2.2

1.6

1.2

1.0

1.0

1.0

1.0

1.0

OOA

14

4 1

3.0

1.6

1.4

1.0

1.0

2.2

10

2.2

1.6

1,230

IQfl

6.9

3.2

June.

2.2

1.0

0.6

1.0

1.0

.6

.4

.2

.6

.6

.2

.2

1.0

.9

.8

.2

.2

.2

.2

.6

.8

1.2

.6

.4

4 1

2.4

2.2

1.1

4 1

1.0

July.

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.6

140

6.9

3.9

3.2

489

1Q

4.1

4 1

3.9

2.2

2.2

4.1

3.7

2.2

1.6

1.0

1.0

.2

.9

.8

.6

10

Aug.

2.2

2.2

.9

.2

.2

.9

.9

1.1

10

6.6

6.6

4.1

174

^07

335.

24

4.1

4.1

4.1

4.1

1.0

2.2

2.2

19

1.0

.6

WiR

57

4.1

397

199

Sept.

6.6

130

14

4.1

2.2

1,150

68

6.6

5.6

4.8

3.2

2.4

1.2

1.0

1.0

1.6

.8

.6

.2

.2

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

2.4

.8

Oct.

2.2

2.2

2.2

2.1

1.6

2.4

2.2

1.0

.8

.2

.2

.2

2.2

3.9

4.1

24

22

19

113

82

6.6

320

255

4.1

58.1

850

199

5.4

4.1

6.6

38

Nov.

6.6

5.8

4.1

2.8

2.4

2.2

2.2

1.0

441

14

2.2

2.2

1.0

1.0

6.1

6.6

6.4

4.8

4.1

2.4

2.2

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

16

Dec.

357

1,430

1,310

174

68

57

30

24

19

13

6.6

5.4

3.2

2.2

1.6

1.0

1.0

2.1

3.2

10

780

47

64

68

80

19

10

6.4

4.1

3.5

3.2

NOTE. Daily discharge determined from a rating curve well defined between 10 and 2,000 second-feet 

but owing to the rapid fluctuation of the stream the monthly means have a low accuracy.

Monthly discharge of Waimea River near Waimea, Kauai, for 1912.

Month.

February. .........................................

March

April..............................................

May

July...............................................

August. . ..........................................

October ...........................................

November. ........................................

Discharge in second-feet.

Maximum.

130 

397 

1,070 

1,230 

1,230 

4.1 

489 

397 

1,150 

850 

441 

1,430

1,430

Minimum.

2.2 

1.0 

1.0 

1.6 

.5 

.2 

.2 

.2 

.2 

.2 

1.0 

1.0

.2

Mean.

10.8 

47.5 

161 

211 

58.8 

1.02 

23 

62 

47.2 

65.7 

18.2 

149

71.4

Run-off 

(total in 

acre-feet).

664 

2,730 

9,900 

12,600 

3,620 

60.7 

1,410 

3,810 

2,810 

4.040 

1,080 

 9,160

51,900

Accu 

racy.

C. 

C. 

B. 

B. 

C. 

D. 

D. 

C. 

D. 

D. 

D. 

C.

KAWAIKOI STREAM NEAR WAIMEA, KATJAI.

Location. About 8 miles northeast of Knudsen's mountain house; reached from

Waimea by horse trail.

Records available. April 3, 1909, to December 31, 1912. 

Gage. A 34-day Barrett & Lawrence clock register; datum unchanged. 

Channel. Practically permanent.

Discharge measurements. Made from a wire suspension bridge. 

Accuracy. Records good.
36 WATEE EESOUKCES OP HAW AH,

Discharge measurements of Kawaikoi Stream near Waimea, Kaual, in

Date.

July 2

Aug. 7

Oct. 6

Hydrographer.

W.V. Hardy.............................................................

....do.....................................................................

....do.....................................................................

height.

Feet. 

1.54

1.67

1.50

Discharge.

Sec.-ft. 

3.90

6.30

3.42

Daily gage height, infect, of Kawaikoi Stream near Waimea, Kauai, for 1912. 

[United States Geological Survey, observer.]

Day.

1.. .............

2...............

3............... 

4...............

5...............

6...............

7...............

8............... 

9...............

10...............

11............... 

12............... 

13............... 

14...............

15...............

16...............

17...............

18...............

19............... 

20...............

21...............

22...............

23............... 

24...............

25...............

26...............

27............... 

28............... 

29............... 

30............... 

31...............

Jan.

1.75

1.70

1.79 

1.70

1.69

1.69

1.69

1.73

1.74

1.71

1.65 

1.62 

1.61 

1.65

1.60 

1.65

1.63

1.65

1.67

1 Kd.

1 fi/L

1.62

1.82 

2.05

2.00

2.00

2.00 

1.90 

2.04 

2.38 

1.95

Feb.

2.49

3.32

2.40 

2.11

2.11

2.11

2.05

1.90 

1.95

2.35

2.04 

2.00 

2.00 

2.00

2.05 

2.05

2.42

3.10

2.80 

3.24

S TO

3.83

2.70 

2.50

2.90

2.75

2.30 

2.33 

3.40

Mar.

2.90

2.58

3.38 

2.70

S ^n

2.90

3.08

2.42 

2.95

3.38

3.60 

2.95

2.45 

2.40

2.20 

2.10

2.04

1.98

1.97 

2.56

2.27

2.00

1.95 

1.94

5.05

3.60

3.15 

3.08 

3.10 

3.05 

3.13

Apr.

3.00

2.45

2.28 

2.30 9 fin

3.07

3.50

2.77 

3.57

2.45

2.35 

2.50 

2.70 

2.70

2.22 

2.20

9 70

2.50

2.17 

2.09

2 Of\

1.95

1.90

1.88

1.92

1.87

1.80 

1.80 

1.80 

1.80

May.

1.80

1.80

1.80 

1.85

1.85

1.78

1.80

2.10 

1.90

1.77

1.70 

1.70 

1.70 

3.10

2.63 

2.18

2.30

1.92

1.80 

1.85

1.80

1.90

2.80 

. 2.00

2.00

1.95

1.95 

1.90 

1.90 

1.85 

1.80

June.

1.80

1.80

1.77 

1.87

1 84

1.75

1.70

1.70 

1.72

1.92

1.78 

1.70 

1.70

1.88

1.88 

1.85

1.80

1.77

1.75 

1.70

1.75

1.78

1.75

1.78

1.85

1.80

1.80 

1.70 

1.62 

1.55

July.

1.55

1.58

1.58 

1.57

1.55

1.52

1.55

1.80

2.88

1 98

1.80 

1.90 

1.75 

2.00

2.00 

2.00

2.00

2.00

2.00 

2.00

2.00

2.00

2.00 

2.00

2.00

2.00

2.00 

2.00 

2.00 

2.00 

2.00

Aug.

2.00

2.00

2.00 

2.00

2.20

2.20

2.20

2.20 

2.25

2.28

2.25 

2.95 

5.30 

5.20

4.65 

2.90

2.50

2.37

2.30 

2sn

2.30

2.30

2.30 

2.30

2.30

2.30

2.30 

2.30 

2.30 

2.30 

2.30

Sept.

2.30

2.30

2.30 

2.30

2.30

2.30

2.25

2.02 

1.92

1 Q7

1.80 

1.70 

1.70 

1.70

1.70 

1.70

1.70

1.70

1.70 

1.70

1.70

1.70

1.70 

1.70

1.70

1.70

1.70 

1.70 

1.70 

1.70

Oct.

1.70

1.70

1.70 

1.50

1.52

1.54

1.52

1.51

1.81

1.80

1.70 

1.70

.......

.......

.......

::::;::

Nov.

.......

.......

.......

.......

.......

:::....

Dec.

3.96 "s.'io

......

 -""

......

......

......

......

NOTE. Gage heights are means for 24 hours computed from Barrett & Lawrence record sheets. Clock 

stopped Sept. 12 to Oct. 3, but record showed that the water surface fluctuated not more than 0.35, the 

mean gage height for the period being estimated at 1.70.
ISLAND OF KATJAI. 37 

Daily discharge, in second-feet, of Kawaikoi Stream near Waimea, Kauai,for 1912.

Day.

1........ .......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19

20...............

21............... 

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

8.5

7.0

9.7

7.0

6.8

6.8

6.8

7.9

8.2

7.3

6.0

5.4

5.2

6.0

5.0

6.0

5.6

6.0

6.4

5.8

5.8 

5.4

10.8

20.5

18.0

18.0

18.0

14.0

20.0

38.8

16.0

Feb.

45.4

127.0

40.0

23.5

23.5

23.5

20.5

14.0

16.0

37.0

20.0

18.0

18.0

18.0

20.5

20.5

41.2

99.0

69.0

116.0

166.0 

202.0

61.0

46.0

78.0

65.0

34.0

35.8

138.0

Mar.

78.0

51.6

135.0

61.0

61.0

78.0

96.8

41.2

83.0

135.0

167.0

83.0

43.0

40.0

28.0

23.0

20.0

17.2

16.8

50.2

32.2 

18.0

16.0

15.6

438.0

167. 0

105.0

96.8

99.0

93.5

103.0

Apr.

88.0

43.0

32.8

34.0

53.0

95.7

152.0

66.6

162.0

43.0

37.0

46.0

61.0

61.0

29.2

61.0

46.0

26.5

22.5

18.0 

16.0

14.0

13.2

14.8

12.8

10.0

10.0

10.0

10.0

May.

10.0

10.0

10.0

12.0

12.0

9

4

10.0

23.0

14.0

9.1

7.0

7.0

7.0

99.0

55.4

27.0

34.0

14.8

10.0

19 f\

10.0

69.0

18.0

18.0

16.0

16.0

14.0

14.0

12.0

10.0

June.

10.0

10.0

9 t

12.8

11.6

8.5

7.0

7.0

7.6

14.8

9.4

7.0

7.0

13.2

iq o

12.0

10.0

9.1

8.5

7.0

8.5

9 A

8.5

9.4

12.0

10.0

10.0

7.0

5.4

4 O

July.

4.2

4.7

4.7

4.6

4.2

3.8

4.2

10.0

7fi 9

17.2

10.0

8.5

18.0

18.0

18.0

18.0

18.0

18.0

18.0

18.0 

18.0

18.0

18.0

18.0

18.0

18.0

18.0

18.0

18.0

18.0

Aug.

18.0

18.0

18.0

18.0

28.0

28.0

28.0

28.0

31.0

32.8

31.0

83.0

500.0

475.0

350.0

78.0

46.0

38.2

34.0

34.0

34.0 

34.0

34.0

34.0

34.0

34.0

34.0

34.0

34.0

34.0

34.0

Sept.

34.0

34.0

34.0

34.0

34.0

34.0

31.0

19.0

14.8

16.8

10.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0 

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

7.0

Oct.

7.0

7.0

7.0

3.5

3.8

4.1

3.8

3.6

10.4

10.0

7.0

7.0

Nov. Dec.

223.0

99.0

Monthly discharge of Kawaikoi Stream near Waimea, Kauai, for 1912.

Month.

February.. . .......................................

March ............

April..............................................

May. ..............................................

July...............................................

August. ...........................................

October 1-12.......................................

The period..................................

Discharge in second-feet.

Maximum.

38.8 

202.0 

438.0 

162.0 

99.0 

14.8 

76.2 

500.0 

34.0

Minimum.

5.0 

14.0 

15.6 

10.0 

7.0 

4.2 

3.8 

18.0 

7.0

Mean.

10.30 

67.20 

80.40 

43.90 

19.50 

9.31 

15.80 

73.90 

14.30 

6.18

161.00

Run-off 

(total in 

acre-feet.)

633

3,870 

4,940 

2,610 

1,200 

554 

972 

4,540 

851 

147

639

21,000

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

B.

WAIAKOALI STREAM NEAR WAIMEA, KATJAI.

Location. About 10 miles northeast of Knudsen's mountain house; reached from

Waimea.

Records available. April 13; 1909, to December 31,1912. 

Gage. Vertical staff read at irregular times; datum unchanged. 

Channel. Permanent. 

Discharge measurements. Made from footbridge 75 feet below trail crossing;

low-water measurements made by wading 50 feet above gage.
38 WATEE BESOUBCES OP HAWAII, 1912.

Discharge measurements of Waiakoali Stream near Waimea, Kauai, in 1912.

Date.

July 2

Oct. 5

Hydrographer.

W.V. Hardy.............................................................

.....do...................................................................

Gage 

height.

Feet. 

2.31

2.28

2.20

Discharge.

Sec.-ft. 

0.94

.98

.84

Daily gage height, in feet, of Waiakoali Stream near Waimea, Kauai, for 1912.

Day.

1........ .......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2-40

2.50

Feb. Mar. Apr.

3.00

2 fiA

May. June.

2.35

2.35

July.

2.31

2.31

Aug2.28

2.28

Sept.

2.59

2.48

Oct.

2.20

2.20

Nov.

2.10

Dec.

4.02

7.90

3.98

NOTE. Miscellaneous gage readings.

MOHIHI STREAM NEAR WAIMEA, KATTAI.

Location. About 12 miles northeast of Knudsen's mountain house; reached by 

saddle horse from Waimea 1J days' travel.

Records available. April 13, 1909, to December 31, 1913.

Drainage area. 2.20 square miles.

Gage. A vertical staff; datum unchanged.

 Channel. One at gage, two at low-water measurement section; practically permanent.

Discharge measurements. Made from suspension bridge.
ISLAND OF KAUAI. 39 

Discharge measurements of Mohihi Stream near Waimea, Kauai, in 1912.

Date.

July 2

Oct. 5

Hydrographer.

W.V. Hardy.............................................................

.....do....................................................................

Gage 

height.

Feet. 

3.68

3.64

3.61

Discharge.

Sec.-ft. 

1.49

1.12

.71

The following gage readings were made: January 28, gage height, 4.0; April 2, gage 

height, 4.10; December 3, gage height, 7.10.

WAIALAE STREAM NEAR WAIMEA, KATTAI.

Location. About 3 miles by trail northeast of F. Gay's mountain house; reached by

saddle horse from Waimea in about one day's ride. 

Records available. August 1, 1910, to December 31, 1912. 

Gage. Barrett & Lawrence hydro-chronograph. 

Channel. Practically permanent.

Discharge measurements. Made from a cable and car. 

Accuracy. Records good.

Discharge measurements of Waialae Stream near Waimea, Kauai, in 1912.

Date.

Apr. 8

July 5

Hydrographer.

W.V. Hardy.............................................................

.....do....................................................................

Gage 

height.

Feet. 

1.41

1.19

Discharge.

Sec.-ft. 

17.6

5.86

Daily gage height, in feet, of Waialae Stream near Waimea, Kauai, for 1912.

Day.

1...... .........

2...............

3............... 

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.18

1.18

1.18 

1.26

1.60

1.50

1.40

1.40

1.40

1.40

1.39

1.33

1.40

1.42

1.39

1.32

1.30

1.26

1.22

1.21

1.30

1.25

1.26

1.64

1.40

1.34

1.35

1.30

1.30

1.28

1.51

Feb.

1.40

1.39

1.46 

1.45

1.30

1.24

1.20

1.20

1.20

1.24

1.39

1.29

1.20

1.20

1.19

1.13

1.10

1.05

1.03

1.01

1.03

1.65

1.64

1.57

1.31

1.29

1.20

1.21

1.20

.......

Mar.

1.40

1.51

1.77 

1.81

1.52

2.05

1.61

1.41

1.76

1.63

2.01

1.82

1.65

1.63

1.40

1.33

1.31

1.30

1.24

1.20

1.20

1.20

1.19

1.15

1.77

1.36

1.24

1.35

1.32

1.28

1.40

Apr.

1.37

1.31

1.24 

1.24

1.28

1.57

1.78

1.63

1.85

1.42

1.39

1.34

1.35

1.33

1.32

1.30

1.42

1.58

1.32

1.24

1.22

1.21

1.20

1.20

1.29

1.40

1.32

1.29

1.22

1.21

May.

1.20

1.21

1.20 

1.20

1.20

1.27

1.25

1.25

1.23

1.21

1.20

1.20

1.20

1.28

1.78

1.41

1.28

1.20

1.19

1.16

1.14

1.31

1.33

1.30

1.31

1.20

1.26

1.88

1.79

1.40

1.29

June.

1.21

1.20

1.20 

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.19

1.24

1.36

1.29

1.25

1.21

1.20

1.20

1.20

1.20

1.23

1.20

1.35

1.38

1.26

1.24

1.22

1-20

1.19

July.

1.18

1.20

1.29 

1.35

1.38

1.34

1.58

1.61

1.74

1.73

2.15

1.69

2.00

1.89

1.73

1.60

1.54

1.50

1.49

1.42

1.40

1.41

1.47

1.50

1.49

1.44

1.43

1.43

1.40

1.39

1.40

Aug.

1.40

1.40

1.40 

1.40

1.40

1.36

1.32

1.31

1.30

1.30

1.21

1.23

1.22

1.73

1.63

1.30

1.22

1.20

1.21

1.18

1.10

1.19

1.20

1.26

1.22

1.21

2.06

1.46

1.17

1.09

1.07

Sept.

1.59

"Ti9"

1.11

2.10

1.58

1.45

1.41

1.38

1.40

1.38

1.31

1.24

1.22

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.20

Oct.

1.20

1.20

1.22 

1.29

1.24

1.24

1.25

1.25

1.29

1.29

1.30

1.29

1.28

1.25

1.21

1.20

1.68

1.66

1.82

1.61

2.04

1.81

1.59

1.40

1.33

1.99

1.69

1.42

1.53

1.42

1.54

Nov.

1.50

1.40

1.36 

1.32

1.35

1.45

1.40

1.42

2.40

1.71

1.49

1.40

1.39

1.39

1.34

1.33

1.28

1.35

1.57

1.58

2.01

1.78

1.64

1.45

1.34

1.30

1.26

1.22

1.52

1.67

Dec.

2.12

3.18

3.28 

2.02

1.70

1.58

1.50

1.55

1.45

1.40

1.34

1.30

1.21

1.20

1.21

1.20

1.20

1.20

1.20

1.50

1.46

1.82

1.88

1.58

1.72

1.59

1.42

1.30

1.27

1.20

1.20
40 WATER RESOURCES OP HAW AH, 1912.

Daily discharge, in second-feet, of Waialae Stream near Waimea, Kauai, for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

5.8

5.8

5.8

9.1

30.0

23.0

17.0

17.0

17.0

17.0

16.4

12.8

17.0

18.2

16.4

12.2

11.0

9.1

7.2

6.8

"11.0

8.6

9.1

33.2

17.0

13.4

14.0

11.0

11.0

10.1

23.7

Feb.

17.0

16.4

20.6

20.0

11.0

8.2

6.3

6.3

6.3

8.2

16.4

10.5

6.3

6.3

6.1

4.7

4.0

3.6

3.6

3.5

3.6

34.0

33.2

27.9

11.6

10.5

6.3

6.8

6.3

Mar.

17.0

23.7

43.6

46.8

24.4

67.0

30.8

17.6

42.8

32.4

63.8

34.0

32.4

17.0

12.8

11.6

11.0

8.2

6.3

6.3

6.3

6.1

5.2

43.6

14.6

8.2

14.0

12.2

10.1

17.0

Apr.

15.2

11.6

8.2

8.2

10.1

27.9

44.4

32.4

50.0

18.2

16.4

11* A.

14.0

12.8

12.2

11.0

18.2

28.6

12.2

8.2

6.8

6.3

6.3

10.5

17.0

12.2

10.5

7.2

6.8

May.

6.3

6.8

6.3

6.3

6.3

9.6

8.7

8.7

7.7

6.8

6.3

6.3

6.3

10.1

44.4

17.6

10.1

6.3

6.1

5.4

4.9

11.6

12.8

11.0

11.6

6.3

9.1

52.4

45.2

17.0

10.5

June.

6.8

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.1

8.2

14.6

10.5

8.6

6.8

6.3

6.3

6.3

6.3

7.7

6.3

14.0

15.8

9.1

8.2

7.2

6.3

6.1

July.

5.8

6.3

10.5

14.0

15.8

13.4

28.6

30.8

41.2

40.4

75.5

37.2

63.0

53.2

40.4

30.0

25.8

23.0

22.4

18.2

17.0

17.6

21.2

23.0

22.4

19.4

18.8

18.8

17.0

16.4

17.0

Aug.

17.0

17.0

17.0

17.0

17.0

14.6

12.2

11.6

11.0

11.0

6.8

7.7

7.2

40.4

32.4

11.0

7.2

6.3

6.7

5.8

4.0

6.1

6.3

9.1

7.2

6.8

67.8

20.6

5.6

3.9

3.7

Sept.

20.3

13.9

6.1

4.2

71.0

28.6

20.0

17.6

15.8

17.0

15.8

11.6

8.2

7.2

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

6.3

Oct.

6.3

6.3

7.2

10.5

8.2

8.2

8.7

8.7

10.5

10.5

11.0

10.5

10.1

&7

6.8

6.3

36.4

34.8

47.6

30.8

66.2

46.8

29.3

17.0

12.8

62.1

37.2

18.2

25.1

18.2

25.8

Nov.

23.0

17.0

14.6

19 9

14.0

20.0

17.0

18.2

97.0

38.8

22.4

17.0

16 4

16.4

13.4

12.8

10.1

14.0

27.9

28.6

63.8

44.4

33.2

20.0

13.4

11.0

9.1

7 9

24.4

35.6

Dec.

72.8

166.0

175.0

3&0

28.6

23.0

26.5

20.0

17.0

13.4

11.0

6.8

6.3

6.8

6.3

6.3

6.3

6.3

23.0

20.6

47.6

52.4

28.6

39.6

29.3

18.2

11.0

9.6

6.3

6.3

Monthly discharge of Waialae Stream near Waimea, Kauai,for 1912.

Month.

March..

May...............................................

July...............................................

September. .......................................

October .................................. ........

December. ........................................

Discharge in second-feet.

Maximum.

33.2 

34.0 

67.0 

50.0 

52.4 

15.8 

75.5 

67.8 

71.0 

66.2 

97.0 

175.0

175.0

Minimum,

5.8 

3.5 

5.2 

6.3 

4.9 

6.1 

5.8 

3.7 

4.2 

6.3 

7.2 

6.3

3.5

Mean.

14.1 

11.2 

23.7 

15.5 

12.4 

7.68 

25.9 

13.5 

12.7 

20.9 

23.8 

32.0

17.8

Run-off 

(total in 

acre-feet).

867 

644 

1,460 

922 

762 

457 

1.590 

830 

756 

1,290 

1,420 

1,970

13,000

Accuracy.

B. 

B. 

B. 

A. 

A. 

B. 

A. 

A. 

B. 

B. 

B. 

B.

KF.KAHA DITCH AT CAMP NO. I,1 NEAR WAIMEA, KAUAI.

Location. About 8 miles north of Waimea at camp No. 1 and a short distance below

the diversion dam.

Records available. January 1, 1910, to December 31, 1912. 

Gage. Vertical staff; read once a day; datum unchanged. 

Discharge measurements. Made with an 8-foot sharp-crested weir. 

Cooperation. Gage heights furnished by the Kekaha Sugar Co.

1 Described in Water-Supply Paper 318 as Kekaha ditch at intake near Waimea.
ISLAND OF KATJAI. 41

The following discharge measurement was made by "W. V. Hardy at the United 

States Geological Survey gage, about .200 feet above the Kekaha Sugar Co.'s weir: 

March 8, 1912: Gage height, 3.64 feet; discharge, 85.3 second-feet.

Daily discharge, in second-feet, of Kekaha ditch at camp No. 1, near Waimea, Kavm,

for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...:...........

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

62.0

57.0

55.0

57.0

85.0

87.5

62.0

53.0

71.0

80.0

57.0

53.0

71.0

on n

64.0

53.0

49.0

45.0

41 n

43.0

75.0

53.0

47.0

on ft

90.0

62.0

53.0

55.0

57.0

53.0 

90.0

Feb.

80.0

75.0

90.0

90.0

on ft

73.0

62.0

66.0

59.5

55.0

90.0

75.0

59.5

53.0

49.0

47.0

47.0

45.0

53.0

<jS >

90.0

90.0

90.0

90.0

90.0

90.0

90.0

90.0

80.0

Mar.

90.0

90.0

90.0

90.0

on ft

90.0

on n

90.0

90.0

on n

90.0

91.2

91.2

91.2

91.2

91.2

90.0

82.5

77.5

77.5

91.2

91.2

80.0

66.0

90.0

91.2

91.2

91.2

91.2

91.2 

91.2

Apr.

91.2

91.2

91.2

85.0

(0)

(0)

(°)

(«)

(a)

(0)

(a

(a

(a

85 0

on n

90.0

90.0

82.5

82.5

82.5

85.0

80.0

75.0

71.0

67.2

87.5

90.0

75.0

71.0

62.0

May.

w n

54.0

55.0

53.0

87.5

80.0

57.0

53.0

77.5

57.0

51.0

49.0

49.0

47.0

85.0

85.0

85.0

66.0 w* n

49.0

49.0

53.0

80.0

75.0

90.0

100.0

53.0

on n

87.5

87.5 

66.0

June.

53.0

49.0

47.0

59.5

57.0

49.0

43.0

41.0

JO A

45.0

41.0

41.0

80.0

57.0

51.0

49.0

45.0

53.0

66.0

49.0

66.0

49.0

53.0

85.0

57.0

85.0

57.0

43.0

37.0

July.

37.0

37.0

35.5

35.5

35.5

35.5

41.0

53.0

41.0

90.0

90.0

90.0

57.0

on n

90.0

71.0

53.0

64.0

47.0

43.0

37.0

37.0

35.5

35.5

53.0

41.0

60.8

41.0

35.5

35.5 

75.0

Aug.

47.0

37.0

35.5

34.0

34.0

62.0

41.0

37.0

75.0

75.0

47.0

75.0

, 53.0

71.0

90.0

82.5

49.0

41.0

37.0

34.0

34.0

57.0

85.0

90.0

66.0

53.0

90.0

90.0

62.0

90.0 

90.0

Sept.

90.0

90.0

90.0

82.5

57.0

53.0

90.0

80.0

62.0

53.0

49.0

49.0

49.0

45.0

39.0

37.0

35.5

34.0

41.0

35.5

34.0

34.0

34.0

32.0

32.0

32.0

30.0

30.0

30.0

30.0

Oct.

45.0

37.0

35.5

47.0

35.5

32.0

30.0

30.0

37.0

45.0

45.0

37.0

37.0

34.0

30.0

30.0

30.0

90.0

90.0

90.0

90.0

90.0

90.0

71.0

49.0

90.0

90.0

71.0

90.0

53.0 

95.0

Nov.

92.5

57.0

43.0

37.0

41.0

57.0

41.0

37.0

90.0

92.5

66.0

53.0

45.0

41.0

37.0

82.5

55.0

45.0

95.0

80.0

90.0

90.0

92.5

100.0

73.0

57.0

49.0

45.0

47.0

100.0

Dec.

92.5

92.5

85.0

85.0

90.0

90.0

90.0

90.0

90.0

80.0

80.0

66.0

62.0

53.0

53.0

57.0

59.5

53.0

53.0

92.5

85.0

92.5

92.5

92.5

92.5

92.5

92.5

75.0

62.0

57.0 

53.0

o Ditch dry Apr. 5-13. 

NOTE. Discharge computed from Francis's formula: Q=3.33 LHTwhere L=8 ft.

Monthly discharge of Kekaha ditch at camp No. 1, near Waimea, Kauai,for 1912.

Month.

February. ...............................................

May.....................................................

July.....................................................

Discharge in second-feet.

Maximum.

90.0 

90.0 

91.2 

91.2 

100.0 

85.0 

90.0 

90.0 

90.0 

90.0 

100.0 

92.5

100.0

Minimum.

43.0 

45.0 

66.0 

62.0 

47.0 

37.0 

35.5 

34.0 

30.0 

30.0 

37.0 

53.0

30.0

Mean.

63.3 

73.0 

88.4 

<»82.1 

67.1 

53.1 

52.3 

60.1 

49.3 

57.0 

64.4 

77.5

665.2

Run-off 

(total in 

acre-feet).

3,890 

4,200 

5,440 

3,420 

4,130 

3,160 

3,220 

3,700 

2,930 

3,500 

3,830 

4,770

46,200

o Ditch was dry Apr. 5-13; mean for the month is mean of 21 days. 

6 Mean for the year is mean of 357 days.
42 WATEE BESOUECBS OF HAWAII, 1912.

KEKAHA DITCH AT FLUME NO. 2,i NEAR WAIMEA, KAUAI.

Location. About 6 miles north of Waimea and 2 miles below intake,

Records available. December 1, 1910, to December 31, 1912.

Gage. Vertical staff; read twice daily, at 7 a. m. and 5 p. m.; datum unchanged.

Channel. Probably permanent.

Discharge measurements. Made from tie beam 2 feet above gage.

Cooperation. Station maintained in cooperation with Kekaha Sugar Co.

The following discharge measurement was made by W. V. Hardy: 

March 8, 1912: Gage height, 2.80 feet; discharge, 84.6 second-feet.

Daily gage height, in feet, of Kekaha ditch at flume No. 2, near Waimea, Kavm,for 1912.

[Manuel Arruda, observer.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22.............

23................

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.08

2.01

2.01

2.11

2.78

2.08

2.25

2.30

2.38

2.00

1.95

2.52

2.66

2.06

1.88

1.78

1.70

1.65

2.34

1.88

2.28

2.80

2.64

2.15

2.00

2.16

2.02

2.14

2.80

Feb.

2.42

2.68

2.80

2.69

2.26

2.12

2.28

2.04

2.14

2.80

2.12

1 98

1.85

1.80

1.80

1.76

2.12

2.05

2.85

2.86

2.85

2.85

2.80

2.85

2.88

2.85

2.52

Mar.

2.86

2.85

2.85

2.86

2.86

2.85

2.85

2.82

2.85

2.86

2.86

2.87

2.86

2.85

2.85

2.85

2.75

2.58

2

KO,

2.70

9 fts

2 79

2.48

2.25

2.85

2.85

2.85

2.86

2.85

2.85

2.85

Apr.

2.85

2.85

2.85

2 7ft

(«)

(«)

(a)

(«)

(a)

(a)

(a)

(a)

(a)

2.50

2.60

2.60

2. GO

2.50

2 en

2.52

2

AK

2.38

2

00

2.36

2.46

2.37

2.25

1.98

May.

1 93

1.85

1 S^

2 99

2.60

2.28

1 QE

2.25

1 OS

1.82

1.75

1.70

1 62

2.65

2.65

2.46

2.12

1.80

1.70

1.70

2.28

2.36

2

EO

2.52

1.95

2.26

2.60

2.60

2.11

June.

1.88

1 66

1 60

1 OS

1.65

1.55

1.50

1.55

1.55

1.50

1.50

2.32

1.74

1.68

1.62

2.06

2.06

1.78

2

nE

1.67

2 on

2.46

1.92

2.30

1.80

1.53

1.50

July.

1.38

1.38

1 QC

1 3S

1 3*

1 48

1 Kf\

1.72

1.50

2 7fi

2.70

2.52

1.92

2.70

2.70

2.16

1.88

2.00

1.65

1.48

1.42

i sa

1.33

1.36

1.72

1.45

1.86

1.45

1.33

1.44

2.17

Aug.

1.55

1.38

1.35

1.30

1 US

1.85

i A.*.

2.05

2.40

1.90

2.25

2.22

2.50

2.70

2.26

1.71

1.45

1.38

1 30

1 si?

2.10

2.65

2.38

2.15

1.74

2.70

2.52

1.98

2.70

2.70

Sept.

2.60

2.70

2 79

2.32

1 Q9

2.32

9 7>;

2.36

2.04

1.84

1.87

1.84

1 65

1.42

1.38

1.32

1.40

1.45

1.35

1.30

1.30

1.28

1.25

1.25

1.22

1.20

1.20

1.20

1.25

Oct.

1.50

1.35

i sn

1 48

1.28

1.20

1.15

1.20

1.40

1 60

1.55

1.35

1.32

1.22

1.18

1.15

1.95

2.32

2.75

2.38

2.75

2.75

2.75

2.02

2.16

2.75

2.75

2.08

2.42

2.28

2.85

Nov.

2.52

1.75

1 48

i QI?

i si

1 79

1.45

2.08

2.80

2.78

2.04

1.75

1.45

1.42

2.15

2.28

1.78

2.20

2.85

2.72

2.75

2.75

2.82

2.78

2.15

1.85

1.70

1.60

2.95

2.92

Dec.

9 sn

2.70

2 en

2.68

2.75

9 7tl

2.75

2.75

2.75

2.50

2.35

2.08

1.98

1.80

1.82

1.95

1.95

1.80

1.75

2.75

2.68

2.80

2.80

2.80

2.80

2 80

2.65

2.28

1.98

1.88

1.80

a Ditch dry Apr. 5 to 13. 

KEKAHA DITCH AT SIPHON NEAR WAIMEA, KAUAI.

Location. About 4 miles north of Waimea, 50 feet above upper end of siphon where

ditch crosses Waimea River.

Records available. December 1, 1910, to December 31, 1912. 

Gage. Vertical staff; read twice daily, at 7 a. m. and 5 p. m.; datum unchanged. 

Channel. Probably permanent.

Discharge measurements. Made from a temporary foot bridge. 

Cooperation. Station maintained in cooperation with Kekaha Sugar Co.

The following discharge measurement was made by W. V. Hardy: 

March 8, 1912: Gage height, 4.43 feet; discharge, 74.4 second-feet.

Described in Water Supply Paper 318, p C2, as "Kekaha ditch at flume No. 3."
ISLAND OF KAUAI. 43

Daily gage height, in feet, of Kekaha ditch at siphon near Waimea, Kauai,for 191%.

[Manuel Amida, observer.]

Day.

1... ............

2...............

3...............

4... ............

5...............

6...............

7............... 

8............... 

9...............

10...............

11...............

12............... 

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24... ............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.82

1.75

1.70

1.75

3.40

2.75

1.85 

1.85 

1.88

2.08

1.70

1.60 

3.05

3.42

1.80

1:65

1.52

1.45

1.40

1.60

2.30

1.65

2.42

4.35

3.45

1.78

1.70

1.82

1.68

1.80

4.28

Feb.

2.05

3.52

4.30

4.65

4 o>;

2.00

1.80 

1.85 

1.72

1.80

4.70 2.10' 

1.75

1.62

1.52

1.50

1.50

1.50

1.68

1.70

4.22

5.00

4.70

4.50

4.40

4.50

4.75

4.15

2.58

Mar.

4.45

4.60

4.90

4.88

4.45

4.88

4.80 

4.62 

4.80

4.50

4.55

5.05 

5.10

4.90

4.92

4.72

3.45

2.48

2.12

3.52

4.70

3.20

2.05

1.90

5.30

5.10

4.62

4.68

4.55

4.35

4.68

Apr.

4.65

4.65

4.40

3.00

.......

.......

3.60

5.28

5.25

5.20

5.20

5.30

4.92

5.15

3.95

2.98

2.25

2.10

4.75

4.15

2.95

2.08

1.82

May.

1.72

1.68

1.68

3.02

5.28

2.35

1.75 

1.88 

2.70

1.75

1.62

1.60 

1.60

2.80

5.30

5.30

5.20

1.90

1.68

1.60

1.60

3.50

3.05

4.65

4.90

1.85

1.80

5.30

5.20

4.90

1.90

June.

1.68

1.55

1.50

1.82

1.65

1.55

1.45 

1.42 

1.40

1.48

1.42

1.40 

1.40

3.20

1.70

1.62

1.55

1.75

1.80

1.95

1.56

1.96

1.60

2.94

2.65

1.68

2.15

1.68

1.42

1.30

July.

1.25

1.25

1.25

1.25

1.25

1.40

1.40 

1.60 

1.38

5.30

5.00

3.60 

1.80

5.20

5.10

1.88

1.70

1.75

1.52

1.38

1.30

1.25

1.25

1.25

1.58

1.30

1.65

1.32

1.25

1.38

3.00

Aug.

1.40

1.25

1.25

1.20

1 4n

1.65

1.34 

3.29 

4.40

3.10

1.70

3.12 

3.12

3.65

5.20

3.18

1.52

1.34

1.26

1.20

1.25

1.88

4.90.

3.50

1.90

1.58.

5.15

3.68

1.75

5.30

5.30

Sept.

5.05

5.50

5.50

4.08

1.75

3.58

5.50 

2.92 

1.80

1.70

1.52

1.52 

1.45

1.35

1.30

1.30

1.30

1.32

1.28

1.22

1.20

1.20

1.15

1.15

1.15

1.15

1.10

1.10

1.10

1.15

Oct.

1.42

1.50

1.22

1.45

1.22

1.18

1.10 

1.12 

1.25

1.52

1.70

1.30 

1.25

1.20

1.15

1.10

1.10

3.28

4.75

2.85

5.15

5.50

5.45

1.88

1.50

4.92

4.45

1.80

2.60

2.50

4.25

Nov.

3.20

1.52

1.30

1.25

1.25

1.52

1.30 

1.30 

5.50

5.50

1.85

1.55 

1.45

1.32

1.30

2.38

1.55

1.45

5.00

2.02

5.50

5.50

5.50

5.50

1.95

1.68

1.52

1.45

3.45

5.50

Dec.

5.50

5.50

3.75

3.60

5.00

5.00

5.50 

5.50 

4.65

3.55

2.90

1.92 

1.78

1.82

1.75

1.70

1.72

1.65

1.50

4.85

4.70

5.30

5.50

5.50

5.50

5.30

4.50

2.25

1.80

1.68

1.60

KEKAHA DITCH AT TUNNEL No. 12, NEAR WAIMEA, KAUAI.

Location. About 2 miles north of Waimea, and one-fourth mile below mouth of 

tunnel No. 12.

Records available. January 1, 1910, to December 31, 1912.

Gage. Vertical staff; read once daily; datum unchanged.

Discharge measurements. Computed from flow over 6-foot weir with end contractions.

Cooperation. Gage heights furnished by Kekaha Sugar Co.

Daily gage height, in inches, of Kekaha ditch at tunnel No. 12, near Waimea, Kauai,for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Jan.

25

22|

21J

21

971

26

25

244

25

26

oot

21

23

971

254

Feb.

28|

244,

28J

ooa

26

234,

234,

23

oil

28

27

23

911

%!

Mar.

29

30

9QS

30

9QS

29f

294

29*

901

29|

30

30

29|

291

Ap

3

*

31

»

Co

(a

V

(a

(a

(0

fa

(a

(a.

2f

2<

r.

HJ.3. '*

i

)

)

)

)

)

)

?

May.

234,

224,

001

22

304,

29

24

23

26

24

22

22

911

20

30

June.

23

22

21

21

23

21

20|

201

21*

19|

19|

184

30

244

July.

19

164

164

164

224,

19i

23

18

30

30

31

25

30

29

Aug.

20

171

17

16J

16

23

18

174,

29

28

23

26

22

27

30

Sept.

29

29

294,

28

224

21

294

24

24

21

19

194,

18

18

17

Oct.

19

164

20

164,

16

16

164

19

184

17*

18

174

154

Nov.

27

20

17

16

16

214.

16

16

31

29J

26214,

19i

16

16

Dec.

30

30

18

26

30

31J

31

3Q1

9,81

284,

264

25J

24

234

o Ditch dry Apr. 5-13.
44 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in indies, of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, for

1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

21

204

184

ill

274

22

264

29J

29

234.

Oil

21

224

20|

27

Feb.

101

19

1Q1

21

23

27

284

29

294

291

28J

29

28?

Mar.

30

001

28

97$

30

30

30

Oftl

26

v>

314

ortl

9Q3.

31

991

3l|

Apr.

29

9Q1

31

31

sm

29s

28}

274

254

294

30

29

27

25

May.

30

29

27

224

21

21

22

28

28

971

244

224

30

30

30

27

June.

22

991

m

22

26

23

234

24

9S1

24

24

24

20

20

July.

26

22

24

91

20

ifti

18

174

18

224

18

22

18

17

17

30

Aug.

29

22

18

17ifii

16

22

971

28}

241

17i

24

29

9Q1

Sept.

17

17

184

17ifii

16

16

16

16

154

154

15$

155

154«*s

Oct.

15

284

25

28

28|

31

30

27

18

28

28

26

24

20

28

Nov.

28

214 is!

29

27

31

31

30

294

27

224

20

19

17

9Qi

Dec.

234

23*

23

21

26

30

31

31

31

9Q1

29*

27

27

23

23

Daily discharge, in second-feet,- of Kekaha ditch at tunnel No. 12, near Waimea, Kauai,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

57.0

49.2

46.2

44.0

64.5

60.0

57.0

55.0

57.0

60.0

48.5

44.0

50.0

64.5

58.5

44.0

42.5

40.0

37.5

37.5

64.5

47.0

61.5

71.5

70.0

51.5

45.5

44.0

48.5

43.2 

63.0

Feb.

69.0

55.0

68.0

68.0

69.0

60.0

51.5

51.5

50.0

45.5

66.0

63.0

50.0

45.5

41.8

40.0

39.0

39.5

44.0

50.0

63.0

75.0

68.0

70.0

71.5

70.8

68.0

70.0

69.0

Mar.

70.0

73.0

72.2

73.0

72 2

72.2

74.0

71.5

71.5

71.5

71.5

73.0

73.0

72.2

71.5

73.0

71.5

66.0

65.2

73.0

73.0

73.0

61.5

60.0

80.0

78.5

75.0

79 9

77.0

67.0

78.5

Apr.

75.0

79 9

73.0

n n

(a)

(a

(a

(a

(a

(0)

(a)

(0)

(0)

68.0

70.0

70.0

71.5

77.0

77.0

75.0

75.0

72 2

69.0

64.5

58.5

71.5

73.0

70.0

63.0

57.0

May.

51.5

48.5

48.5

47.0

75.0

70.0

53.0

50.0

60.0

53.0

47.0

47.0

45.5

41.0

73.0

73.0

70.0

63.0

48.5

44.0

44.0

47.0

66.0

66.0

64.5

55.0

48.5

73.0

73.0

73.0 

63.0

June.

50.0

47.0

44.0

44.0

50.0

44.0

42.5

42.5

45.5

40.0

40.0

40.0

37.5

73.0

55.0

47.0

48.5

45.5

47.0

60.0

50.0

58.5

51.5

53.0

68.0

53.0

53.0

53.0

41.0

41.0

July,

39.0

32.5

32.5

32.5

32.5

48.5

40.0

50.0

36.0

73.0

73.0

77.0

57.0

73.0

70.0

60.0

47.0

53.0

44.0

41.0

37.5

36.0

35.0

36.0

48.5

36.0

47.0

36.0

34.0

34.0 

73.0

Aug.

41.0

35.0

34.0

32.5

31.0

50.0

36.0

35.0

70.0

66.0

50.0

60.0

47.0

63.0

73.0

70.0

47.0

36.0

34.0

32.5

31.0

47.0

64.5

69.0

55.0

40.0

35.0

71.5

53.0

70.0 

71.5

Sept.

70.0

70.0

71.5

66.0

48.5

44.0

71.5

53.0

53.0

44.0

39.0

40.0

36.0

36.0

34.0

34.0

34.0

37.5

34.0

32.5

31.0

31.0

31.0

31.0

30.0

30.0

30.0

30.0

30.0

30.0

Oct.

39.0

37.5

32.5

41.0

32.5

31.0

31.0

32.5

32.5

39.0

37.5

35.0

36.0

35.0

30.0

29.0

30.0

68.0

57.0

66.0

69.0

77.0

73.0

63.0

36.0

66.0

66.0

60.0

53.0

41.0 

66.0

Nov.

63.0

41.0

34.0

31.0

31.0

45.5

31.0

31.0

77.0

71.5

60.0

45.5

40.0

31.0

31.0

66.0

45.5

37.5

70.0

63.0

77.0

77.0

73.0

71.5

63.0

48.5

41.0

39.0

34.0

71.5

Dec.

73.0

73.0

36.0

60.0

73.0

78.5

77.0

71.5

75.0

68.0

68.0

61.5

58.5

53.0

51.5

51.5

51.5

44 0

60.0

73.0

77.0

77.0

77.0

71.5

71.5

71.5

63.0

63.0

50.0 

50.0

a Ditch dry Apr. 5-13.
ISLAND OP KAUAE. 45 

Monthly discharge of Kekaha ditch at tunnel No. 12, near Waimea, Kauai, for 1912,

Month.

May.....................................................

June.......................:.............................

July.....................................................

December. ...............................................

The year. . .........................................

Discharge in second-feet.

Maximum.

71.5 

75.0 

80.0 

77.0 

75.0 

73.0 

77.0 

73.0 

71.5 

77.0 

77.0 

78.5

80.0

Minimum.

37.5 

39.0 

60.0 

57.0 

41.0 

37.5 

32.5 

31.0 

30.0 

29.0 

31.0 

36.0

29.0

Mean.

52.5 

58.3 

71.8 

o70.3 

57.5 

48.8 

47.2 

50.0 

41.8 

46.5 

51.4 

63.8

654.6

Run-off 

(total in 

acre-feet).

3,230 

3,350 

4,410 

2,930 

3,540 

2,900 

2,900 

3,070 

2,490 

2,860 

3,060 

3,920

38,700

o Ditch dry Apr. 5-13. Mean for the month is the mean of 21 days. 

6 Mean for the year is the mean of 357 days.

WAIMEA DITCH NEAR WAIMEA, KATTAI.

*

Location. About 4 miles north of Waimea and 300 feet below intake.

Records available. November 4, 1911, to December 31, 1912.

Gage. Vertical staff; read once each day, at 7 a. m.; datum unchanged.

Channel. Fairly permanent.

Discharge measurements. Made from a pole bridge 8 feet long, and graduated in

1-foot sections from 0 to 5.7 feet. 

Diversions. A lateral diverts water from the left bank of the ditch about 25 feet

below the gage. 

Accuracy. Record fair.

Discharge measurements of Waimea ditch near Waimea, Kauai, in 1912.

Date.

Mar. 8

July 13

Sept. 30

Hydrographer.

W.V. Hardy.............................................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Fed. 

2.29

1.63

1.66

Discharge.

Sec.-ft. 

10.5

6.92

3.61

Daily gage height, in feet, of Waimea ditch near Waimea, Kauai, for 1912. 

{Honke, observer.]

Day.

1..... ..........

2...............

3...............

4...............

5. ..............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Jan.

2.10

2.00

1.90

2.50

2.20

2.20

2.10

1.95

2.00

2.20

1.80

1.98

2.30

2.20

2.20

Feb.

2.20

2.20

2.20

2.20

2.20

2.20

2.20

2.08

2.15

2.03

2.20

2.20

2.00

2.02

2.01

Mar.

2.20

2.20

2.20

2.25

2.20

2.40

2.40

2.30

2.30

2.40

2.40

2.40

2.40

2.40

2.40

Apr.

2.30

2.30

2.30

2.30

2.40

2.40

2.40

2.40

2.40

2.40

2.60

2.60

2.50

2.50

2.50

May.

1.80

1.71

1.85

1.90

2.43

2.20

1.70

1.70

1.78

1.60

1.78

1 60

1.80

1.78

2.60

June.

1.73

1.60

1.65

1.80

1.72

1.72

1.71

1.72

1.70

1.71

1.70

1.70

1.70

2.00

1.50

July.

1.50

1.42

1.50

1.50

1.50

1.50

1.50

1.42

1.40

2.20

1.20

1.20

1.53

2.20

2.10

Aug.

1.43

1.42

1.40

1 ift

1 41

1.40

1.45

1.42

1.93

2.00

1.51

1.70

1.63

1.93

2.20

Sept.

2.20

2.20

2.20

2.20

1.88

2.20

2.20

2.10

1.73

1.73

1.72

1.72

1.72

1.71

1.71

Oct.

1.72

1.72

1.70

1.72

1.72

1.70

1.67

1.65

1.60

1.60

1.65

1.70

1.70

1.70

1.70

Nov.

2.60

1.95

1.98

1 AS

1.82

1.82

1.80

1.72

2,75

2.70

1.80

1 7Q

1.70

1.65

1.62

Dec.

1.90

2.10

1.70

1.55

1.30

1.40

1.70

1.80

1.80

1.80

1.60

1.50

1.34

1.72

1.72
46 WATEE EESOUECES OF HAWAII, 1912.

Daily gage height, in feet, of Waimea ditch near Waimea, Kauai, for 1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.96

2.00

1.70

1.55

2.03

2.20

2.00

1.88

2.20

2.20

2.05

1.98

2.13

2.08

2.40

Feb.

2.00

1.99

1.90

19.0

2.05

2.13

2.20

2.20

2.20

2.20

2.20

2.20

2.20

Mar.

2.40

2.30

2.30

2.10

2.00

2.40

2.20

2.02

2.20

2.30

2.30

2.30

2.30

2.30

2.30

2.30

Apr.

2.20

2.22

2.50

2.09

2.00

2.10

1.80

1.08

1.05

1.01

2.60

2.20

1.85

1.81

1.71

May.

2.40

2.60

1.82

1.80

1.80

1.80

1.80

2.20

2.20

2.51

1.90

1.80

2.40

2.20

2.10

1.70

June.

1.70

1.70

1.70

1.70

1.70

1.70

1.40

1.40

1.40

1.90

1,80

1.53

1.59

1.52

1.51

July.

2.00

1.70

1.60

1.70

1.50

1.42

1.51

1.50

1.50

1.48

1.48

1.40

1.40

1.40

1.40

2.25

Aug.

2.15

1.72

1.70

1.60

1.62

1.65

1.50

2.30

2.30

1.70

1.70

2.30

2.20

1.75

2.20

2.20

Sept.

1.69

1.70

1.70

1.70

1.40

1.42

1.40

1.40

1.40

1.39

1.25

1.25

1.30

1.60

1.67

Oct.

1.70

1.70

2.20

2.20

2.20

2.55

2.55

2.70

2.10

1.90

2.90

2.60

2.20

2.20

2.20

2.75

Nov.

2.12

1.90

1.66

2.70

2.18

2.70

2.61

2.65

2.00

1.91

1.79

1.75

1.76

1.71

1.70

Dec.

1.70

1.65

1.61

1.60

1.60

1.90

2.05

2.20

2.00

1.92

1.50

1.32

1.31

1.50

1.50

1.50

NOTE. Gage was read without closing headgate for lateral whenever it might be in use, hence the discharge for some days will be too small.

Daily discharge, in*second-feet, of Waimea ditch near Waimea, Kauai, for 1912.

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

21. ..............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

7.8

6.6

5.5

13.7

9.2

9.2

7.8

6.0

6.6

9.2

4.5

6.4

10.6

9.2

9.2

6.2

6.6

3.6

2.6

7.0

9.2

6.6

5.3

9.2

9.2

7.2

6.4

7.3

8.2

7.6

12.1

Feb.

9.2

9.2

9.2

9.2

9.2

9.2

9.2

7.6

8.5

7.0

9.2

9.2

6.6

6.8

6.7

6.6

6.5

5.5

5.5

7.2

8.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

9.2

.......

Mar.

9.2

9.2

9.2

9.9

9.2

12.1

12.1

10.6

10.6

12.1

12.1

12.1

12.1

12.1

12.1

12.1

10.6

10.6

7.8

6.6

12.1

9.2

6.8

9 9

10.6

10.6

10.6

10.6

10.6

10.6

Apr.

10.6

10.6

10.6

10.6

12.1

12.1

12.1

12.1

12.1

12.1

15.3

15.3

13.7

13.7

13.7

9.2

9

E

13.7

7.7

6.6

7 Si

4.5

.8

.7

.6

15.3

9 9

5.0

4.5

3.7

May.

4.5

3.7

5.0

5.5

12.6

9.2

3.6

3.6

4.3

2.9

4.3

2.9

4.5

4.3

15.3

12.1

15.3

4.7

4.5

4.5

4.5

4.5

9.2

O 9

iq a

5.5

4.5

12.1

9.2

7.8

3.6

June.

3.9

2.9

3.2

4.5

3.8

3.8

3.7

3.8

3.6

3 7

3.6

3.6

3.6

6.6

2.4

3.6

3.6

3.6

1 O

1.9

1 Q

5.5

4.5

2.6

2.8

2.5

2.4

July.

2.4

2.0

2.4

2.4

2.4

2.4

2.4

2.0

1.9

9.2

1.1

1.1

2.6

9.2

7.8

6.6

3.6,

2.9

2.4

2.0

2.4

2.4

2.4

2.3

2.3

1.9

1.9

1.9

1.9

9.9

Aug.

2.0

2.0

1 O

1.9

2.0

1.9

2.2

2.0

5.8

6.6

2.4

3.1

5.8

9.2

8.5

3.8

2.9

3.0

3.2

2.4

10.6

3.6

3.6

10.6

9.2

4.0

9.2

9.2

Sept.

9.2

9.2

9.2

9.2

5.3

9.2

9.2

7.8

3.9

3.9

3.8

3.8

3.8

3.7

3.7

3.5

3.6

3.6

3.6

1.9

2.0

1.9

1.9

1 O

1 Q

1.3

1.3

1.5

2.9

3.4

Oct.

3.8

3.8

3.6

3.8

3.8

3.6

3.4

3.2

2.9

2.9

3.2

3.6

3.6

3.6

9.2

9.2

6.6

14.5

14.5

16.9

7.8

5.5

20.3

15.3

9.2

9.2

9.2

17.7

Nov.

15.3

6.0

6.4

6.0

4.7

4.7

4.5

3.8

17.7

16.9

4.5

4.4

3.6

3.2

3.0

8.1

5.5

3.3

8.9

16.9

15.5

16.1

6.6

5.6

4.4

4.0

4.1

3.7

3.6

Dec.

5.5

7.8

3.6

2.6

Jr. 5

1.9

3.6

4.5

4.5

4.5

2.9

2.4

1.7

3.8

3.8

3.6

3.2

3.0

2.9

2.9

5.5

7.2

9.2

6.6

5.7

2.4

1.6

1.5

2,4

2.4

2.4

NOTE. A lateral diverts water from the left bank of ditch about 25 feet below gage. Daily discharge 

determined from a rating curve prepared from measurements made when lateral was dry. When lateral 

is carrying water the main ditch carries more water than is indicated by rating table.
ISLAND OP KAUAI.

Monthly discharge of Waimea ditch near Waimea, Kauai, for 1912.

47

Month.

April .............................................

July...............................................

The year. ...................................

Discharge in second-feet.

Maximum.

13.7 

9.2 

12.1 

15.3 

15.3 

6.6 

9.9 

10.6 

9.2 

20.3 

17.7 

9.2

20.3

Minimum.

2.6 

5.5 

6.6 

.6 

2.9 

1.9 

1.1 

1.9 

1.3 

2.9 

3.0 

1.5

.6

Mean.

7.61 

8.24 

10.40 

9.52 

6.82 

3.48 

3.28 

4.85 

4.37 

7.25 

7.60 

3.78

6.43

Run-off 

(total in 

acre-feet).

468 

474 

640 

566 

419 

207 

202 

298 

260 

446 

452 

232

4,660

Accuracy.

B. 

A. 

A. 

B. 

B. 

B. 

B. 

B. 

C. 

B. 

B. 

B.

KAMENEHUNE DITCH HEAR WAIMEA, KAUAI.

Location. About 3 miles above Waimea and 200 feet below wire suspension bridge 

across Waimea River; reached by wagon road up the right side of Waimea River. 

Records available. October 9, 1911, to December 31, 1912. 

Gage. Vertical staff; read once daily, at irregular hours; datum unchanged. 

Channel. Probably shifting.

Discharge measurements. Made from plank across ditch. 

Accuracy. Data insufficient for estimate of discharge.

Discharge measurements of Kamenehune ditch near Waimea, Kauai, in 1912. 

[Hydrographer, W. V. Hardy.]

Date.

July 13. ......................

14............---.----...

Sept. 30. .....................

Gage 

height.

Feel. 

1.23

.92

1.38

.48

Discharge.

Sec.-ft. 

3.04

2.65

5.01

.27

Date.

Nov.30... ....................

30.......................

Dee.2. .......................

Gage 

height.

Feet. 

1.10

1.02

1.45

Discharge.

Sec.-ft. 

3.33

3.04

5.19

Daily gage height, in feet, of Kamenehune ditch near Waimea, Kauai, for 1912. 

[P. Mokuahakea, observer.]

Day.

1. ....... .......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9. ..............

10...............

11...............

12...............

13...............

14...............

I5rr . r .,,,.......

Jan.

1.30

1.10

.70

.50

.50

.40

.88

.82

.81

.81

.81

.75

.70

1.01

.85

Feb.

1.00

.81

1.00

1.20

1.10

1.02

.90

.80

.80

1.00

.72

.60

.60

1.00

.94

Mar.

1.09

1.10

1.40

1.23

1.12

1.30

1.30

1.20

1.25

1.31

1.30

1.30

1.15

1.30

1.10

Apr.

1.38

1.30

1.20

.87

1.52

1.48

1.40

1.32

1.50

1.40-

1.30

1.30

1.24

1.20

1.01

May.

0.40

.45

.40

.40

1.10

.80

.80

.80

.82

.80

.80

.80

.80

.80

1.50

June.

0.90

.92

.80

.60

.90

.50

.50

.48

.45

.55

.57

.59

.59

.60

.62

July.

0.50

.50

.50

.50

.50

.50

.50

.50

.69

1.45

1.28

1.01

.81

1.60

1.19

Aug.

0.40

.40

.50

.40

.50

.40

.41

.48

.70

.65

.60

.70

1.31

.40

1.21

Sept.

1.10

1.25

1.00

.85

.64

1.60

1.55

1.10

.96

.72

.50

.45

.41

.37

.34

Oct.

0.44

.57

.54

.51

.65

.64

.69

.70

.70

.78

.99

.98

.72

.70

.45

Nov.

1.20

1.00

.85

.80

.60

.50

.50

.49

1.50

1.10

.70

.65

.61

.54

.52

Dec.

1.51

1.48

1.60

.39

.39

.40

.41

.52

.55

.49

.70

.75

.59

.70

.65
48 WATEE EESOUECES OF HAWAII, 1912.

Daily gage height, in feet, of Kamenehune ditch near Waimea, Kauai,for 1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.71

.80

.81

.75

.77

.90

.95

.91

1.23

1.10

1.00

1.30

an

1.00

.95

.80

Feb.

0.80

.80

.70

.70

.73

1.39

1.54

1.33

1.35

1.11

1.10

1.20

.93

Mar.

1.10

1.10

1 00

.85

1.30

1.10

on

.75

.65

1 40

1 30

1.00

1 00

.85

.80

1.43

Apr.

1 Af\

1 00

1.31

1.10

.91

.65

.75

.80

.80

.80

1 00

1 00

40

.60

60

May.

1.30

I

Ofi

1.20

.58

.51

.50

.50

.90

1 AO

1 PI5i

on

.75

1

CA

1 40

.93

.89

June.

0.50

.50

.50

.50

.55

.60

fiO

.43

40

1.00

1.10

1.09

97

.93

.62

July.

1.13

1.11

.94

.58

.47

.40

.40

.35

.35

.31

.30

.30

40

.40

.39

1.20

Aug.

1.00

QA

40

40

.40

.35

.30

.30

1 0^

.60

45

1.50

1 0^

60

1.50

1.30

Sept.

0.31

07

.32

.30

.30

.45

.45

.45

.45

45

.45

.45

45

.57

.49

Oct.

0.48

QA

1.20

1.00

.98

1.40

1.50

1.60

1.30

1 40

1.61

1.20

1 00

.95

1.30

1.40

Nov.

1.60

1 40

1.25

.98

.80

.70

.70

.65

.50

.40

.40

.40

40

.84

.40

Dec.

0.95

.87

.80

.98

1.00

1.30

.79

.70

.75

.80

.69

.50

.60

.60

.70

.64

MAKAWELI EIVER BASIN. 

MAKAWELI RIVER NEAR WAIMEA, KATTAI.

Location. About 2 miles northeast of Waimea; reached by wagon road up Makaweli River.

Records available. October 6, 1911, to December 31, 1912. 

Gage. Vertical staff gage; read daily at noon; datum unchanged. 

Channel. Practically permanent.

Bischarge measurements. Made from a wire suspension bridge. 

Accuracy. Records good.

Discharge measurements of Makaweli River near Waimea, Kavai, in 1912. 

[Hydrographer, W. V. Hardy.]

Date.

Mar. 4... .....................

July 13.......... .............

13.......................

1O

13

13........................

Gage 

height.

Feet. 

3.55

7 40

6.80

5 no

K ea

5

Af\

Discharge.

Sec.-ft. 

29.8

2,080

1,360

711

rro^.

427

Date.

July 14.......................

10.......................

Gage 

height.

Feet. 

3.90

3.18

8.35

4.38

3.36

Discharge.

Sec.-ft. 

64.1

10.2

2,930

171

18.8
ISLAND OF KATJAI. 49

Daily gage height, in feet, of Makaweli River near Waimea, Kauai,for 1912. 

[Taguchi TTmeichi, observer.]

Day,

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26. ..............

27...............

28...............

29. ..............

30. .............. 

31...............

Jan.

3.30

3.32

3.28

3.28

3.30

3.28

S on

3.30

3.22

3.28

3.30

3.32

3.38

3.28

3.25

3.20

3.38

3.40

3.35

' 3.28

3.25

3.22

3.22

3.28

4.50

4.30

3.28

3.25

3.22

3.22 

3.28

Feb.

3.30

3.28

3,. 22

3.60

3 7H

3.50

3.25

3.32

3.30

3.28

3.55

3.58

3.55

3.55

3.52

3 JW

3.52

3.55

3.55

3.58

3.52

4.00

5.70

4.32

4.05

3.70

3.55

3.52

3.52

Mar.

3.35

3.58

4.52

4.25

4.78

4.92

4.20

4.28

4.42

4.58

5.85

5.58

5.42

5.35

5.15

4.82

4.58

4.35

4.28

4.00

4.10

3.82

3.75

3.72

3.85

3.78

3.75

3.58

3.45

3.38 

3.35

Apr.

3.30

3.22

3.22

3.30

3.25

3.42

5.50

3.50

5.40

3.50

3.45

3.40

3.38

3.32

3.30

3.30

3.55

3.48

3.30

3.32

3.30

3.35

3.32

3.50

3.45

3.40

3.38

3.38

3.35

3.32

May.

3.30

3.35

3.32

3.55

3.62

3.50

3.48

3.45

3.52

3.42

3.40

3.35

3.30

3.58

3.52

3.50

3.45

3.40

3.35

3.28

3.60

3.52

3.40

3.25

3.22

3.20

3.35

3.58

3.45

3.42 

3.38

June.

3.30

3.28

3.22

3.55

3.40

3.38

3.28

3.25

3.22

3.22

3.35

3.32

3.52

3.48

3.38

3.35

3.32

3.32

3.35

3.32

3.30

3.30

3.38

3.32

3.62

3.48

3.45

3.42

3.38

3.35

July.

3.40

3.30

3.30

3.35

3.40

3.30

3.30

3.32

3.30

3.28

3.25

3.20

6.50

4.55

3.58

3.32

3.35

3.35

3.30

3.22

3.20

3.28

3.55

3.52

3.48

3.35

3.35

3.32

3.38

3.35 

3.30

Aug.

3.30

3.28

3.22

3.20

3.20

3.48

3.30

3.30

3.35

3.32

3.40

3.38

3.35

3.35

3.38

3.38

3.35

3.32

3.32

3.30

3.48

3.35

3.35

3.30

3.30

4.58

4.22

4.00

3.55

3.40 

3.32

Sept.

3.30

a. 28

3.30

4.58

4.32

4.10

3.80

3.55

3.30

3.38

3.32

3.32

3.28

3.35

3.35

3.32

3.38

3.35

3.30

3.30

3.28

3.20

3.35

3.35

3.32

3.32

3.30

3.30

3.25

3.12

Oct.

3.20

3.28

3.80

3.30

3.15

3.10

3.08

3.08

3.05

3.02

3.05

3.10

3.10

3.15

3.15

3.10

3.45

3.22

3.35

3.28

3.25

3.25

3.50

3.45

3.30

3.30

3.55

3.50

3.45

3.40 

3.40

Nov.

3.35

3.32

3.58

3.45

3.38

3.43

3.45

3.70

3.60

3.38

3.32

3.30

3.28

3.28

3.22

3.22

3.28

3.25

3.22

3.88

3.52

3.38

3.60

3.38

3.20

3.20

3.35

3.32

3.38

3.35

Dee.

5.75

7.45

7.40

4.30

4.10

4.00

3.60

4.10

3.30

3.33

3.28

3.20

3.20

3.10

3.10

3.00

3.00

3.00

3.00

4.00

4.70

4.90

4.08

4.20

3.50

3.40

3.38

3.38

3.32

3.32 

3.15

Daily discharge, in second-feet, of Makaweli River near Waimea, Kauai, for 1912.

Day.

1..... .........

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

11..:...........

12. ............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

21..............

22..............

23..............

24.............

25..............

26..............

27..............

28..............

29. .............

30..............

31..............

Jan.

14.0

15.2

13.2

13.2

14.0

13.2

10.0

14.0

10.8

13.2

14.0

15.2

18.8

13.2

12.0

10.0

18.8

20.0

17.0

13.2

12.0

10.8

13.2

190.0

143.0

13.2

12.0

10.8

10.8

13.2

Feb.

14.0

10.8

34.0

44.0

26.0

12.0

15.2

14.0

13.2

30.0

32.4

30.0

30.0

27.6

27.6

27.6

30.0

30.0

32.4

27.6

84.0

595.0

148.0

93.0

44.0

30.0

27.6

27.6

.......

Mar.

17.0

32.4

195.0

132.0

260.0

298.0

122.0

139.0

171.0

209.0

674.0

537.0

466.0

438.0

366.0

270.0

209.0

139.0

84.0

102.0

57.8

49.5

46.2

62.0

52.8

49.5

32.4

23.0

18.8

17.0

Apr.

14.0

10.8

10.8

14.0

12.0

21.2

500.0

26.0

458.0

26.0

23.0

20.0

18.8

15.2

14.0

14.0

30.0

24.8

14.0

15.2

14.0

17.0

15.2

26.0

23.0

20.0

18.8

18.8

17.0

15.2

May.

14.0

17.0

15.2

30.0

36.0

26.0

24.'8

23.0

27.6

21.2

20.0

17.0

14.0

32.4

27.6

26.0

23.0

20.0

17.0

13.2

34.0

27.6

20.0

12.0

10.8

10.0

17.0

32.4

23.0

21.2

18.8

June.

14.0

13.2

10.8

30.0

20.0

18.8

13.2

12.0

10.8

10.8

17.0

15.2

27.6

24.8

18.8

17.0

15.2

15.2

17.0

15.2

14.0

18.8

15.2

24.8

23.0

21.2

18.8

17.0

July.

20.0

14.0

14.0

17.0

20.0

14.0

14.0

15.2

14.0

13.2

12.0

10.0

1,110.0

202.0

32.4

15.2

17.0

17.0

14.0

10.8

10.0

13.2

30.0

27.6

24.8

17.0

17.0

15.2

18.8

17.0

14.0

Aug.

14.0

13.2

10.8

10.0

10.0

24.8

14.0

14.0

17.0

15.2

20.0

18.8

17.0

17.0

18.8

18.8

17.0

15.2

15.2

14.0

24.8

17.0

17.0

14.0

14.0

209.0

126.0

84.0

30.0

20.0

15.2

Sept.

14.0

13.2

14.0

209.0

148.0

102.0

55.0

30.0

14.0

18.8

15.2

15.2

13.2

17.0

17.0

15.2

18.8

17.0

14.0

14.0

13.2

10.0

17.0

17.0

15.2

15.2

14.0

14.0

12.0.

6.8

Oct.

10.0

13.2

55.0

14.0

8.0

6.0

5.4

5.4

4.5

3.6

4.5

6.0

6.0

8.0

8.0

6.0

23.0

10.8

17.0

13.2

12.0

12.0

26.0

23.0

14.0

14.0

30.0

26.0

23.0

20.0

20.0

Nov.

17.0

15.2

32.4

23.0

18.8

21.8

23.0

44.0

34.0

18.8

15.2

14 0

13.2

13.2

10.8

10.8

13.2

12.0

10.8

66.2

27.6

18.8

34.0

18.8

10.0

10.0

17.0

15 2

18.8

17 0

Dee. '

621.0

2,020.0

1,970.0

143.0

102.0

84.0

34.0

102.0

14.0

15.8

13.2

10.0

10.0

6.0

6.0

3.0

3.0

3.0

3.0

84.0

239.0

292.0

98.4

122.0

26.0

20.0

18.8

18.8

15.2

15.2

8.0

14694° WSP 336 14
50 WATER RESOURCES OF HAW AH, 1912.

Monthly discharge of Mdkaweli River near Waimea, Kauai, for 1912.

Month.

January ...........................................

March. ............................................

April.. ............................................

May............................................. .

July...............................................

September. .......................................

October. ................................... ....

December........................ ............. .

The year ....................................

Discharge in second-feet.

Maximum.

190.0 

595.0 

674.0 

500.0 

36.0 

36.0 

1, 110. 0 

209.0 

209.0 

55.0 

66.2 

2,020.0

2,020.0

Minimum.

10.0 

10.8 

17.0 

10.8 

10.0 

10.8 

10.0 

10.0 

10.0 

3.6 

10.0 

3.0

3.0

Mean.

23.3 

54.2 

175.0 

48.9 

21.7 

18.0 

58.1 

28.6 

30.3 

14.4 

20.5 

198.0

57. 8

Run-off 

(total in 

acre-feet).

1,430 

3,120 

10,800 

2,910 

1,330 

1,070 

3,570 

1,760 

1,800 

885 

1,220 

12,200

42,100

Accuracy.

A. 

A. 

A. 

B. 

A. 

A. 

B. 

B. 

A. 

B. 

A. 

B.

HALEKUA STREAM NEAR WAIMEA, KAUAI.

Location. About 12 miles northeast of Waimea; station reached by saddle horse 

over trail from Waimea via Gay's mountain house; two days required for round 

trip; a guide is necessary.

Records available. October 11, 1912, to December 31, 1912.

Gage. Barrett & Lawrence automatic register.

Channel. Practically permanent.

Discharge measurements. Measurements are made by wading.

Cooperation. Station maintained in cooperation with Hawaiian Sugar Co.

Discharge measurements of Halekua Stream near Waimea, Kauai, in 1912.

Date.

Oct. 12

Nov. 18

Hydrographer.

W.V.Hardy........ ......... ............................................

Gage 

height.

Feet. 

3.52

3.60

Discharge.

Sec.-ft. 

0.48

1.50

OLOKELE DITCH AT TUNNEL NO. 12, NEAR MAKAWELI, KAUAI.

Location. About 12 miles northeast of Waimea; about 9 miles, straight-line 

measurement, northeast of Makaweli; and about 2 miles below intake.

Records available. January 1, 1910, to December 31, 1912.

Gage. A vertical staff gage; datum unchanged.

Channel. Permanent.

Discharge measurements. Made from a plank which is thrown across ditch when 

measurement is taken.

Accuracy. Very good.

Cooperation. Gage is the property of the Hawaiian Sugar Co., which furnishes gage 

heights at the end of the year.

Discharge measurements of Olokele ditch at tunnel No. 12, near Makaweli, Kauai, in 1912.

Date.

Feb. 10

Mar. 7

Nov. 28

Hydrographer.

W.V.Hardy.............................................................

.....do....................................................................

height.

Feet. 

2.72

3.01

2.04

Discharge.

Sec.-ft. 

69.1

78.8

45.3
ISLAND OF KATJAI. 51

Daily gage height, in feet, of Olokele ditch at tunnel No. 12, near Makaweli, Kauai, for 1912.

[Hawaiian Sugar Co., observer.]

Day.

1.. .............

2....-.....-.-..

3...............

4...............

5.. .......... ...

6...............

7.. .............

8...............

9.. .............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18.--.-.-.....-..

19...............

20....--..-...-..

21...............

22...............

23..-....--......

24...............

25....-...-.-....

26...............

27...............

28. ..............

29...............

30..-..--.--.----

31...............

Jan.

2.40

2.40

2.60

2.40

9 >»n

2.90

2.60

3.50

3.50

2 7ft

2.50

2.40

3.10

3.20

2.50

2.40

2.40

2.30

2.30

2.30

2.50

2.40

2.40

2.80

2.50

2.40

2.40

2.40

2.30

2.30

2.80

Feb.

2.40

2.80

2.50

2.60

2.40

2.30

2.30

2.30

2.30

2.51

2.60

2.30

2.30

2.30

2.20

2.20

2.20

2.20

2.20

2.20

2.40

3.50

3.50

3.50

3.00

2.60

2.80

2.60

2.40

Mar.

3.10

2.90

3.50

3.00

9 en

3.00

3.22

2.60

3.50

3.20

3.50

3.50

3.50

3.30

2.70

2.50

2.40

2.80

2.40

2.40

2.50

2.50

2.30

2.20

3.50

2.50

2.30

2.90

2.40

2.30

9 fift

Apr.

2.40

2.50

2.30

2.60

2.40

2.40

3.50

3.30

3.50

3.00

3.00

2.40

2.50

3.40

2.30

2.50

2.40

3.20

2.40

2.80

2.40

2.40

2.70

2.40

2.90

3.50

2.40

2.50

2.30

2.20

May.

2.20

2.40

3.50

3.50

3.50

9 >y\

2.30

3.50

2.40

2.20

2.20

2.10

2.20

3.50

3.50

2.50

2.40

2.20

2.10

2.30

2.60

3.50

3.50

3.50

2.50

2.30

3.50

3

Kf\

3 Cft

2.90

O Af\

June.

2.30

2.20

2.10

2.40

2.30

O Oft

2.10

2.10

2.70

9 4fl

" 2.20

2.10

3.20

3.50

2.50

2.90

2.20

2.90

3.50

2.50

3.50

3.30

i 1ft

3.50

2.60

2.30

2.50

2.20

2.20

2.10

July.

2.10

2.20

2.10

2.50

2.10

2.50

3.50

2.40

2.10

2.70

3.50

2.70

3.10

3.30

3.50

2.50

3.50

2.60

2.40

2.20

2.50

2.60

3.50

3.50

2.50

3.50

2.40

2.30

2.50

2.20

Aug.

2.20

2.10

2.10

2.00

2.10

2.10

2.10

3.50

3.20

2.40

3.20

2.40

2.50

3.50

3.30

2.30

2.30

2.10

2.10

2.10

2.40

2.30

2.30

2.30

2.30

2.30

3.50

2.90

2.40

3.50

3 40

Sept.

2.80

3.50

3.40

3.20

2.50

3.50

3.50

2.70

2.40

2.30

2.20

2.30

2.20

2.20

2.10

2.10

2.90

2.20

2.40

2.20

2.30

3.40

2.20

2.10

2.00

2.00

2.00

2.00

2.20

3.50

Oct.

2.30

2.50

3.50

2.20

2.50

2.60

2.30

3.20

2.90

3.40

2.20

2.20

2.10

2.10

2.10

2.40

2.20

2.60

3.50

2.60

3.50

3.30

3.50

2.40

2.20

3.50

3.30

3.50

3.10

3.40

3.00

Nov.

2.90

2.30

2.40

2.60

3.80

2.90

2.90

2.30

3.80

2.70

2.40

2.20

2.20

2.10

2.10

2.10

2.10

2.40

' 3.60

2.30

3.70

3.00

2.70

2.50

2.20

2.20

2.10

2.02

3.70

2.60

Dec.

3.80

3.60

3.70

3.00

3.50

2.70

2.60

3.70

2.40

2.60

2.40

2.20

2.10

2.20

2.30

2.80

2.10

2.20

2.20

3.70

3.00

3.30

3.70

3.70

3.70

3.70

2.90

3.00

2.50

3.00

2.40

Daily discharge, in second-feet, of Olokele ditch at tunnel No. 12, near Makaweli, Kauai,

for 1912.

Day.

1.. .............

2....-.-.....-..

3...............

4...............

5...............

6...............

7... ......... ...

8....... ....... .

9...--..-....... 10......... ......

11...............

12...............

13...---.........

14...............

 15...............

16...............

17...............

18...............

19.........--..-.

20.. ............ .

21...............

22...............

23...............

24...............

25...............

26:. .............

27.. .............

28...............

29...............

30

31...............

Jan.

57

57

64

57

61

75

64

98

98

68

61

57

83

86

61

57

57

54

54

54

61

57

57

71

61

57

V7

57

54

ZA.

71

Feb.

57

71

61

64

57

54

54

54

54

61

64

54

54

54

50

50

50

50

50

50

57

98

98

98

79

64

71

64

57

Mar.

83

T^

98

79

61

79

87

64

98

86

98

98

98

90

68

61

f»7

71

57

f»7

61

61

54

50

QQ

61

54

75

f»7

54

64

Apr.

57

61

54

64

57

57

98

90

98

79

79

57

61

94

54

61

f»7

86

57

71

57

57

68

57

75

98

57

61

54

Kf\

May.

50

f>7

OR

98

98

61

U

98

57

50

50

47

50

OR

OR

61

w

>»n

47

54

64

98

OR

OR

61

54

QQ

OR

OR

7C

K7

June.

54

CA

f>7

54

50

47

47

68

57

50

47

86

QR

61

75

50

75

98

61

98

90oo

QQ

64

u.

61

Kf\

f^ft

47

July.

47ty\

47

61

47

61

OR

C7

47

68

98

68

83

Oft

98

61

QQ

64

57

dft

61

64

OR

OR

61

98

K7

w\

54

61

Kf\

Aug.

50

47

47

44

47

47

47

98

86

57

86

<V7

61

08

Oft

54

KA

47

47

47

f>7

U

54

U

54

54

QQ

7*

*7

QQ

QA

Sept.

71

98

94

86

61

98

98

68

57

54

50

54

50

50

47

471*,

50

57f»n

54

94fin

47

dl

44

44

44

47

QQ

Oct.

54

61

98

50

61

64

54

86

75

94

50fin

47

47

47

57

<cn

64

98

64

08

90

OR

W

50

98

on

OS

83

94

79

Nov.

75

u

57

64

110

75

7f»

54

110

68

57

Cft

50

47

47

47

W

102

54

106

79

68

61

Cft

50

47

dl

106

fid.

Dec.

110

102

106

79

98

68

64

106

57

64

57

50

47

50

54

71

47

50

50

106

79

90

106

106

106

106

75

79

61

7Q
52 WATEE RESOURCES OP HAW AH, 1912.

Monthly discharge o/Olokele ditch at tunnel No. 12, near Makaweli, Kauai,for 191%.

Month.

 &j. ..............................................

July. ...... ........................................

Discharge in second-feet.

Maximum.

98 

98 

98 

98 

98 

98 

98 

98 

98 

98 

110 

110

110

Minimum.

54 

50 

50 

50 

47 

47 

47 

44 

44 

47 

44 

47

44

Mean.

63.9 

62.0 

72.7 

67.5 

72.0 

64.2 

67.8 

63.2 

62.7 

71.2 

65.8 

76.8

67.5

Run-off 

(total in 

acre-feet).

3,930 

3,570 

4,470 

4,020 

4,430 

3,820 

4,170 

3,890 

3,730 

4,380 

3,920 

4,720

49,000

Accuracy.

A. 

A. 

A. 

A. 

B. 

A. 

B. 

A. 

A. 

B. 

A. 

A.

OLOKELE DITCH AT WEIR NEAR WAIHEA, KATJAI.

Location. About 8 miles northeast of Waimea and 1 mile east of Camp 9.

Records available. January 1 to December 31, 1912.

Gage. A vertical staff gage spiked to the right side of ditch. Zero on gage is equal

to crest of weir. 

Discharge measurements. Made from plank over ditch and by a 12-foot weir with

end contractions.

Accuracy. Conditions and records are good. 

Cooperation. Station is the property of and records are furnished by the Hawaiian

Sugar Co.

Daily discharge, in second-feet, ofOlokele ditch at weir near Waimea, Kauai,for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15.. ............ .-

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

^.. .............

25.. .............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

56.6

56.6

64.4

60.1

79.6

82.9

64.4

74.9

74.9

81.2

60.1

57.3

70.3

68.2

65.9

55.8

55.8

54.5

53.1

53.1

61.5

55.8

54.5

81.2

61.5

55.8

54.5

54.5

53.1

53.1

71.9

Feb.

60.1

63.0

63.0

70.3

51.7

49.0

47.7

47.7

46.4

4fi d

67.4

57.3

51.7

51.0

Ef\ A

50.4

50.4

50.4

50.4

50.4

53.1

68.9

92.5

94.2

78.0

70.3

68.9

65.9

57.3

.......

Mar.

58.7

82.9

<7A Q

07 fi

61.5

70.3

79.6

73.4

78.0

87.6

92.5

92.5

92.5

92.5

TO Q

64.4

57.3

65.9

58.7

54.5

64 4

57.3

57.3

50 4

n o

74.9

54.5

60 1

58.7

54.5

64.4

Apr.

63.0

64.4

54.5

11 7

67.4

57.3

87.6

92.5

87.6

S7 fi

78.0

61.5

63.0

68.9

57.3

54.5

61.5

80.4

64 4

55.8

70.3

55.8

64.4

R4 d

53.1

82.9

64.4

61.5

58.7

50.4

May.

47.7

49.0

58.7

76.5

89.3

67.4

55.8

60 1

76-5

50.4

47.7

46.4

46.4

50.4

on Q

84.5

54.5

50.4

47.7

51.7

51.7

79.6

71.9

74 Q

78.0

58.7

70.3

92.5

84.5

58.7

June.

53.1

50.4

47.7

50.4

58.7

50.4

47.7

46.4

55.8

61.5

46.4

47.7

50.4

89.3

65.9

67.4

57.3

50.4

70.3

70.3

64.4

89.3

64.4

76.5

84.5

55.8

60.1

53.1

47.7

46.4

July.

46.4

58.7

50.4

46.4

49.0

76.5

64.4

76.5

50.4

60.1

68.9

86.0

61.5

89.3

87.6

74.9

64.4

81.2

58.7

53.1

53.1

70.3

65.9

63.0

70.3

57.3

73.4

51.7

55.8

55.8

54.5

Aug.

51.7

46.4

45.1

44.4

43.8

50.4

49.0

80.4

76.5

74.9

58.7

63.0

53.1

61.5

92.5

70.3

51.0

47.7

46.4

45.1

46.4

53.1

64.4

58.7

67.4

51.7

78.0

89.3

67.4

74.9

91.7

Sept.

81.2

82.9

90.9

84.5

65.9

70.3

92.5

70.3

' 63.0

53.1

50.4

55.2

54.5

47.7

45.1

45.1

64.4

61.5

47.7

51.7

51.7

51.7

61.5

45.1

44.4

41.2

42.5

42.5

49.0

62.2

Oct.

64.4

65.9

57.3

64.4

51.7

51.7

51.7

64.4

64.4

57.3

56.6

51.7

47.7

46.4

49.0

50.4

50.4

79.6

76.5

82.9

74.9

90.9

76.5

64.4

51.7

73.4

91.7

67.4

89.3

61.5

76.5

Nov.

79.6

56.6

50.4

64.4

58.7

76.5

70.3

55.8

81.2

78.0

58.7

53.1

49.0

46.4

45.1

46.4

46.4

46.4

78.0

60.8

78.0

74.9

81.2

78.0

51.7

46.4

45.1

43.8

58.7

76.5

Dec.

86.0

92.5

81.2

60.1

84.5

73.4

60.1

70.3

70.3

65.9

64.4

51.7

47.7

50.4

50.4

73.4

53.1

46.4

46.4

70.3

76.5

90.9

94.2

95.8

95.8

94.2

81.2

71.9

63.0

58.7

60.1

NOTE, Discharge computed from Francis's formula, Q=3.33 (L 2 H) H* when L=12 feet.
ISLAND OF KAUAI. 53 

Monthly discharge of Olokele ditch at weir near Waimea, Kauai, for 1912.

Month.

February ................................................

April....................................................

May.....................................................

July.....................................................

December. ...............................................

Discharge in second-feet.

Maximum.

82.9 

94.2 

92.5 

92.5 

94.2 

89.3 

89.3 

92.5 

92.5 

91.7 

81.2 

95.8

95.8

Minimum.

S3.1 

46.4 

50.4 

50.4 

46.4 

46.4 

46.4 

43.8 

41.2 

46.4 

43.8 

46.4

41.2

Mean.

62.8 

59.3 

69.8 

66.2 

65.1 

59.3 

63.7 

61.1 

59.0 

64.6 

61.2 

70.3

63.6

Run-off 

(total in 

acre-feet).

3,860 

3,420 

4,290 

3,940 

4,000 

3,530 

3,920 

3,760 

3,510 

3,970 

3,640 

4,320

46,000

POOWAIOMAHAIHAI DITCH NEAR WAIMEA, KATTAI.

Location. About 2 miles northeast of Waimea, 250 feet below intake and 110 feet

below bridge station on Makaweli River. 

Records available. October 27, 1911, to December 31, 1912. 

Gage. A vertical Btaff gage spiked to tree on left bank of ditch; read at noon each

day.

Channel. Permanent.

Discharge measurements. Made from timber bridge 15 feet above gage. 

Accuracy. Good.

Discharge measurements of Poowaiomahaihai ditch near Waimea, Kauai, in 1912. 

[Hydrographer, W. V. Hardy.]

Date.

Mar. 4........................

July 14.......................

Nov.30.......................

Gage

1.12

1.58

1.12

1.86

Discharge.

9.17

12.4

5.62

14.7

Date.

4.......................

10.......................

Gage 

height.

3.05

1.36

1.21

Discharge.

47.3

7.23

5.52

Daily gage height, in feet, of'Poowaiomahaihai ditch near Waimea, Kauai, for 1912. 

[Taguchi Umeichi, observer.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14............:..

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

1.20

1.21

1.19

1.19

1.20

1.18

1.17

1.20

1.21

1.30

1.22

1.20

1.20

1.24

1.10

1.00

1.10

1.25

1.15

1.12

Feb.

1.00

.98

.98

1.20

1.21

1.10

.99

1.08

1.00

.98

1.08

1.12

1.08

1.08

.99

.98

98

.99

.98

.99

Mar.

0.99

1.19

1.20

1.10

1.29

1.35

1.20

1.10

1.40

1.52

1.78

1.65

1.60

1.53

1.50

1.48

1.35

1.30

1.27

1.23

Apr.

0.90

.80

.80

.80

.78

.90

1.50

1.00

1.40

1.00

.90

.90

.88

.88

.80

.80

1.10

1.00

.90

.90

May.

0.90

1.00

.90

1.10

1.20

1.10

1.00

.90

1.20

.90

.90

.80

.70

1.10

1.10

1.00

.90

.90

.80

.70

June.

0.80

.70

.70

1.20

1.00

.80

.70

.70

.70

.70

.80

.80

1.20

1.10

1.00

.80

.80

.80

.80

.80

July.

1.20

1.00

1.00

1.10

1.20

.90

.90

1.00

.90

.90

1.50

1.40

2.30

1.57

1.20

1.10

1.10

1.00

.90

.80

Aug.

1.00

.90

.80

.80

1.00

1.20

1.00

1.10

1.10

1.20

1.20

1.10

1.00

1.10

1.10

1.20

1.20

1.20

1.20

1.00

Sept.

1.00

.90

1.00

1.60

1.50

1.40

1.30

1.30

1.20

1.30

1.20

1.20

1.00

1.10

1.10

1.10

1.10

1.10

1.00

1.00

Oct.

1.10

1.10

1.60

1.30

1.20

1.10

1.10

1.10

1.00

1.00

1.00

1.10

1.10

1.20

1.20

1.00

1.30

1.25

1.30

1.20

Nov.

1.20

1.10

1.40

1.30

1.20

1.42

1.30

1,60

1.50

1.20

1.20

1.10

1.10

1.10

1.00

1.00

1.10

1.00

1.10

1.70

Dec.

3.10

3.40

3.22

1.40

1.30

1.32

1.20

1.30

1.20

1.20

1.20

1.10

1.10

1.00

1.00

.90

.90

.90

.90

1.30
54 WATER RESOURCES OF HAW AH, 1912.

Daily gage height, in feet, of Poowaiomahaihai ditch near Waimea, Kauai,for 1912 Con.

Day.

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.11

1.10

1.00

1.10

1.30

1.25

1.00

.98

Q7

.97

1.00

Feb.

0.97

1.20

1.40

1.23

1.10

1.09

.98

.97

O7

Mar.

1 19

1.14

1 19

1.10

.90

OR

Q9

.92

.83

.81

.80

Apr.

0 90

1 AA

90

1.10

1 nft

1.00

.90

on

.80

.70

May.

1.30

1.20

1.10

.80

.80

.70

.80

1.20

1 00

.90

oft

June.

0.70

.70

90

.80

1 Sft

1.10

1 00

.80

1 00

.90

July.

0.80

80

1.20

1.10 i fin

.90

on

.90

.90

.80

.80

Aug.

1 00

1.30

1 3ft

1.20

1.20

1.50

1.40

1.40

1 30

1.20

1.30

Sept.

D on

.80

1.10

1.10

1.10

1.00

1.20

1.12

1.10

1.10

Oct.

1.20

1.20

1.40

1 3ft

1.20

1.20

1 60

1.40

i 3ft

1.20

1.20

Nov.

1.20

1.50

1.20

1.10

1.10

1.20

1.20

1.30

1.58

Dec.

9 7n

2.40

1 40

1.50

1.60

1 30

1.30

1.30

1.20

1.20

1.00

Daily discharge, in second-feet, of Poowaiomahaihai ditch near Waimea, Kavm, for 1912,

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

6.2

6.3

6.1

6.1

6.2

6.0

5.9

6.2

6.3

7.3

6.4

6.2

6.6

5.2

4.3

5.2

6.8

5.7

5.4

5.3

5.2

4.3

5.2

7.3

6.8

4.3

4.1

4.1

4.1

4.3

Feb.

4.3

4.1

4.1

6.2

6.3

5.2

4.2

5.0

4.3

4.1

5.0

5.4

5.0

5.0

4.2

4 1

4.1

4.2

4.1

4.2

4.1

6.2

8.5

6.5

5.2

5.1

4.1

4.1

4.1

.......

Mar.

4.2

6.1

6.2

5.2

7.2

7.9

6.2

5.2

8.5

10.1

14.2

12.0

11.2

10.2

9

c

9.5

7.9

7.3

7.0

6.5

6.1

5.6

5.4

5.2

3.5

3.9

3.7

3.7

3.0

2.9

2.8

Apr.

3.5

2.8

2

0

2

0

9 7

3.5

9.8

A 3

8.5

4.3

3.5

3.5

3.4

3.4

2.8

2.8

5.2

4.3

3.5

3.5

3.5

4.3

3.5

<; 9

4.3

4.3

3.5

3.5

2.8

2.3

May.

3.5

4.3

3.5

5.2

6.2

5.2

4.3

3.5

6.2

3.5

3.5

2.8

2.3

5.2

5.2

4.3

3.5

3.5

2.8

2.3

7.3

6.2

j>.2

2.8

2.8

2.3

2.8

6.2 4.'3

3.5

3.5

June.

2.8

2.3

2.3

6.2

4.3

2.8

2.3

2.3

2.3

2.3

2.8

2.8

6.2

5.2

4.3

2.8

2.8

2.8

2.8

2.8

2.3

2.3

3.5

2.8

7.3

5.2

4.3

2.8

4.3

3.5

July.

6.2

4.3

4.3

5.2

6.2

3.5

3.5

4.3

3.5

3.5

9.8

8.5

25.0

10.8

6.2

5.2

5.2

4.3

3.5

2.8

2.8

2.8

5.2

4.3

3.5

3.5

3.5

, 3.5

2.8

2.8

Aug.

4.3

3.5

2.8

2.8

4.3

6.2

4.3

5.3

5.2

6.2

6.2

5.2

4.3

5.2

5.2

6.2

6.2

6.2

6.2

4.3

4.3

7.3

7.3

6.2

6.2

9.8

8.5

8.5

7.3

7.3

Sept.

4.3

3.5

4.3

11.2

9.8

8.5

7.3

7.3

6.2

7.3

6.2

6.2

4.3

5.2

5.2

5.2

5.2

5.2

4.3

4.3

3.5

2.8

5.2

5.2

5.2

4.3

6.2

5.4

5.2

5.2

Oct.

5.2

5.2

11.2

7.3

5.2

5.2

5.2

4.3

4.3

4.3

5.2

5.2

6.2

6.2

4.3

7.3

6.8

7.3

6.2

6.2

6.2

8.5

7.3

6.2

6.2

11.2

8.5

7.3

6.2

6.2

Nov.

6.2

5.2

8.5

7.3

6.2

8.8

7.3

11.2

9.8

6.2

6.2

5.2

5.2

5.2

4.3

4.3

5.2

4.3

5.2

12.8

8.5

6.2

9.8

6.2

5.2

5.2

6.2

6.2

7.3

10.8

Dec.

49.0

60.0

52.8

8.5

7.3

7.5

6.2

7.3

6.2

6.2

6.2

5.2

5.2

4.3

4.3

3.5

3.5

3.5

3.5

7.3

36.0

27.0

8.5

9.8

11.2

7.3

7.3

7.3

6.2

6.2

4.3

Monthly discharge of Poowawmahaihai ditch near Waimea, Kauai,for 1912.

Month.

April..............................................

July...............................................

The year. ...................................

Discharge in second-feet.

Maximum.

7.3 

8.5 

14.2 

9.8 

7.3 

7.3 

25.0 

9.8 

11.2 

11.2 

12.8 

60.0

60.0

Minimum.

4.1 

4.1 2.8' 

2.3 

2.3 

2.3 

2.8 

2.8 

2.8 

4.3 

4.3 

3.5

2.3

Mean.

5.66

4.86 

6.72 

3.94 

4.12 

3.45 

5.38 

5.77 

5.64 

6.40 

6.87 

12.50

5.96

Run-off 

(total in 

acre-feet).

348 

280 

413 

234 

253 

205 

331 

355 

336 

394 

409 

769

4,330

Accuracy.

C. 

C. 

C. 

C. 

C. 

C. 

B. 

B. 

B. 

B. 

A. 

A.
ISLAND OP KAUAI. 55

HANAPEPE RIVER BASIN. 

EAST BRANCH OF HANAPEPE RIVER1 AT HANAPEPE FALLS, NEAR ELEELE. ELATTAI.

Location. About 8 miles north of Eleele and a short distance below Hanapepe Falls. 

Records available. November 22, 1911, to December 31, 1912. 

Gage. Vertical staff; datum unchanged.

Discharge measurements. Made by wading on crest of masonry dam; crests feet 

wide and 75 feet long.

Daily gage height, in feet, of East Branch of Hanapepe River at Hanapepe Falls, near

Eleele, Kauai, for 1912.

[S. W. Holmer, observer.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29............,.:

30...............

31...............

Jan.

0.35

.10

.10

.18

.22

.16

.20

.20

.20

Feb. Mar.

0.10

1 00

.35

.60

.22

.15

.05

Apr.

0.02

.25

.20

.50

.25

.70

May.

0.55

.05

.13

.09

.02

.05

.22

.22

.70

.20

.05

June.

0.03

.32

.03

.15

.04

July.

0.40

.20

.34

.17

.42

.10

.10

.02

Aug.

0.02

.28

.50

.02

.01

.20

.05

.65

.13

Sept.

0.20

.05

.22

.12

Oct.

0.15

.24

.38

.70

.05

.02

.05

Nov.

0.16

.45

.05

.05

.38

.20

.20

Dec.

0.85

1.18

.05

.01

0.5

.95

.70

.76

.20

.10

.06

.02

.03

NOTE. Gage heights represent water flowing over dam; station not visited Sundays, but lack of gage 

heights on week days indicates that all the water was diverted at the dam.

HANAPEPE RIVER AT KOTJXA, NEAR ELEELE, KATTAI.

Location. About 5 miles,north of Eleele.

Records available. August 18, 1910, to December 31, 1912.

Drainage area. 12.63 square miles.

Gage. Friez automatic register; datum unchanged.

Channel. Fairly permanent.

Discharge measurements. Made from cable and car.

Accuracy. Records good.

Discharge measurements of Hanapepe River at Koula, near Eleele, Kauai, in 1912.

Date.

Mar. 6

Dec. 16

Hydrographer.

W.V. Hardy....................... ...................................... .....do..............:.....................................................

Gage 

height.

Feet. 

1.06

1.20

Discharge.

Sec.-ft. 

17.8

20.9

1 Described in Water-Supply Paper 318, p. 77, as Hanapepe River at Hanapepe Falls, near Eleele 

Kauai.
56 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Hanapepe River at Koula, near Eleele, Kauai, for 191%.

[S. W. Holmer, observer.]

Day.

3...............

5...............

6...............

7...............

8...............

9...............

10...............

11..............

12...............

13...............

14...............

15...... ....... ..

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.10

1.12

1.18

1.25

1.67

1.21

1.20

1.52

1.47

1.21

1.15

1.19

1.49

1.64

1.17

1.15

1.10

1.09

1.07

1.14

1.05

1.05

1.50

1.52

1.30

1.35

1.35

1.33

1.09

1.18

1.18

Feb.

1.05

1.05

1.05

1.07

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

LOO

1.00

1.00

1.08

1.31

2.55

1.88

1.25

1.13

1.02

1.00

1.06

Mar.

1.07

1.08

1.20

1.07

1.00

1.05

1.15

1.06

1.91

l.£7

3.00

2.35

2.80

1.90

1.50

1.27

1.25

1.35

1.10

1.10

1.10

1.10

1.08

1.12

1.55

1.13

1.05

1.06

1.05

1.05

1.07

Apr.

1.05

1.00

1.00

1.20

1.10

1.49

2.70

1.75

2.27

1.47

1.35

1.15

1.11

1.20

1.08

1.18

1.CO

1.28

1.05

1.42

1.06

1.18

1.27

1.10

1.50

1.31

1.15

1.10

1.05

1.05

May.

1.05

1.05

1.46

1.64

1.50

1.14

1.07

1.36

1.07

1.06

1.08

1.05

1.07

1.46

1.80

1.22

1.08

1.05

1.08

1.07

1.14

1.31

1.37

1.55

1.24

1.18

1.81

2.82

2.07

1.52

1.08

June.

1.15

1.10

1.11

1.36

1.38

1.21

1.11

1.13

1.21

1.07

1.05

1.06

1.65

1.37

1.28

1.20

1.08

1.18

1.34

1.12

1.57

1.32

1.25

1.78

1.23

1.17

1.22

1.11

1.09

1.05

July.

1.07

1.05

1.04

1.02

1.18

1.11

1.34

1.04

1.10

1.38

1.92

1.21

2.74

2.48

2.05

1.52

2.44

1.58

1.36

1.20

1.37

1.04

1.03

1.54

1.19

1.39

1.16

1.12

1.19

1.18

1.22

Aug.

1.19

1.07

1.09

1.23

1.21

1.19

1.22

1.49

1.55

1.11

1.10

1.06

1.04

2.19

1.55

1.19

1.10

1.05

1.07

1.07

1.14

1.38

1.24

1.64

1.38

1.55

2.58

1.58

1.47

2.50

1.81

Sept.

1.82

1.81

1.71

1.40

1.28

2.48

1.61

1.42

1.34

1.18

1.24

1.30

1.19

1.17

1.14

1.19

1.18

1.04

1.14

1.11

1.12

1.29

1.13

1.08

1.06

1.04

1.03

1.07

1.15

1.19

Oct.

1.23

1.12

1.38

1.10

1.19

1.20

1.19

1.37

1.19

1.20

1.13

1.17

1.12

1.13

1.11

1.12

1.41

1.42

1.98

1.52

2.21

1.68

1.57

1.21

1.59

2.53

1.75

1.81

1.56

1.48

1.52

Nov.

1.29

1.18

1.16

1.15

1.61

1.26

1.20

1.%

2.03

1.31

1.18

1.12

1.10

1.09

1.10

1.10

1.09

1.30

1.29

1.16

1.36

1.51

1.69

1.25

1.17

1.10

1.07

1.09

1.41

1.42

Dec.

1.71

4.18

4.70

2.38

1.61

1.39

1.29

2.05

1.50

1.31

1.22

1.10

1.12

1.12

1.09

1.29

1.10

1.12

1 1>i

1.83

2.79

2.98

2.82

2.87

1.89

1.61

1.44

1.35

1.29

1 97

Daily discharge, in second-feet, of Hanapepe River at Koula, near Eleele, Kauai, for 191%.

Day.

1...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29................

30............... 

31...............

Jan.

18.0

19.0

22.0

26.5

68.1

23.7

23.0

50.2

45.0

23.7

20.5

22.5

47.0

64.2

21.5

20.5

18.0

17.5

16.5

20.0

15.5

15.5

48.0

50.2

30.0

34.0

34.0

32.4

17.5

22.0 

22.0

Feb.

15.5

15.5

15.5

16.5

13.0

13.0

13.0

13.0

13.0

13.0

13.0

13.0

13.0

13.0

13.0

13.0

13.0

13.0

is n

13.0

17.0

30.8

100.0

19.5

14.0

13.0

16.0

Mar

16.5

17.0

23.0

16.5

13.0

15.5

20.5

105.0

55.7

320.0

186.0

277.0

103.0

27.9

9fi P\

34 0

18.0

18.0

18.0

18.0

17.0

19 0

KQ K

1Q K

15.5

16.0 1^ 5

15.5 

16.5

Apr.

15.5

13.0

13.0

23.0

18.0

47.0

256.0

170.0

45.0

34.0

18.5

00 A

17.0

22.0

KQ. ft

28.6

15.5

40 0

16.0

22.0

27 9

18.0

48.0

30.8

18.0

T; i

15.5

May.

15.5

15.5

44.0

64.2

48.0

16.5

34 8

16.5

16.0

17.0

IKK

16.5

s? n

24.4

17.0

15.5

17.0

16.5

20.0

35.6

53.5

25.8

99 n

88.6

50.2 

17.0

June.

20.5

18.0

18.5

34.8

36.4

23.7

18.5

in K

16.5

15.5

16.0

AK K

35.6

OQ C

23.0

17.0

qo o

19 0

KK 7

26.5

84 0

25 1

9.1 A

18.5

17 ^

15.5

July.

16.5

15.5

15.0

14.0

22.0

18.5

33.2

15.0

18.0 OA A

106.0

23.7

264.0

129.0

50.2

203.0

56.8

34.8

23.0

OK fi

15.0

H K

52.4

99 f\

37.2

19.0

22.5

22.0 

24.4

Aug.

22.5

16.5

17.5

25.1

23.7

22.5

24.4

47.0

53.5

18.5

18.0

16.0

15.0

155.0

53.5

22.5

18.0

15.5

16.5

16.5

20.0

36 4

OK Q

64.2

OA A

53.5

231.0

56.8

215.0 

88.6

Sept.

90.2

88.6

73.5

38.0

28.6

211.0

60.3

40.0

33.2

99 ft

25.8

30.0

22.5

91 f\

20.0

22.5

99 ft

15.0

20.0

18.5

19 0

29.3

1Q X

17.0

16.0

15.0

14.5

16.5

22.5

Oct.

25.1

19.0

36.4

18.0

22.5

23.0

22.5

35.6

22.5

OQ ft

19.5

21.5

19.0

18.5

19.0

40.0

117.0

(tfl 9

159.0

69.4

KK 7

23.7

E7 Q

221.0

88.6

54 6

46.0 

50.2

Nov.

29.3

21.0

20.5

60.3

27.2

23.0

113.0

125.0

30.8

22.0

19.0

18.0

17.5

18.0

18.0

17 ^

' 30.0

on Q

21.0

*M Q

49.1

70.7

26.5

21.5

18.0

17.5

39.0

40.2

Dec.

73.5

581.0

701.0

191.0

fiO 1

37.2

?9.3

129.0

OA Q

24.4

18.0

19.0

19 0

17.5

29.3

18.0

19 0

20.5

91 8

275.0

316.0

281.0

498.0

292 0

101.0

fift °.

34 0

29.3 

27.9
ISLAND OF KAUAI. 

Monthly discharge of Hanapepe River near Eleele, Kauai, for 191%.

57

Month.

April..................... .........................

May

July...............................................

The year ....................................

Discharge In second-feet.

Maximum.

68.1 

225.0 

320.0 

256.0 

281.0 

84.0 

264.0 

231.0 

211.0 

221.0 

125.0 

701.0

701.0

Minimum.

15.5 

13.0 

13.0 

13.0 

15.5 

15.5 

14.0 

15.0 

14.5 

18.0 

16.5 

17.5

13.0

Mean.

29.3 

25.3 

51.0 

39.7 

42.6 

27.5 

51.3 

48.1 

36.4 

48.9 

33-9 

133.0

47.5

Run-off 

( total in 

acre-feet).

1,800 

1,460 

3,140 

2,360 

2,620 

1,640 

3,150 

2,960 

2,170 

3,010 

2,020 

8,180

34,500

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

HANAPEPE DITCH AT HANAPEPE FALLS, NEAR ELEELE, KAUAI.

Location. About 8 miles northeast of Eleele, near Hanapepe Falls, and 400 feet

below the intake.

Records available. November 22, 1911, to December 31, 1912. 

Gage. Vertical staff; read once daily (at irregular hour), except Sundays; datum

unchanged.

Channel. Probably permanent. 

Discharge measurements. Measurements made from cross timber of flume 4 feet

above gage. 

Accuracy. Records good.

Discharge measurements of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai, in 191%.

Date.

Mar. 6

Nov. 7

Hydrographer.

W.V. Hardy.............................................................

Larrison and Hardy ......................................................

Gage 

height.

Feet. 

0.82

1.08

Discharge.

Sec.-ft. 

10.5

15.9

Daily gage height, in feet, of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai,Jor

1912.

[8. W. Holmer, observer.]

Day.

1. ..............

2...............

3...............

4...............

5. .............

6. .. ..........

7...... ........

8...............

9............ ..

10...............

11...............

12. .............

13...............

14... ...........

15...............

16...............

17...............

18...............

19...............

20.... ...........

Jan.

"i.io"

1.10

1.07

. 1.35

1.13

1.25

1.25

1.18

1.10

1.10

1.10

.70

1.05

1.02

1.01

1.00

.98

1.15

Feb.

0.90

.89

.89

.86

.85

.85

.85

,90

.86

""."84"

.83

.82

.81

.81

.83

.80

.80

Mar.

0.90

.85

.......

.86

.83

.82

.83

.90

1.33

.......

1.69

1.43

1.55

1.24

1.20

1.171

1.24"

1.11

1.11

Apr.

0.91

.88

.87

1.38

.92

.92

1.37

1.32

1.26

1.23

1.14

1.06

....... "i."o2"

1.02

1.10

1.10

.99

1.55

May.

0.96

.97

1.20

1.60

.......

1.04

1 08

1.14

1.10

1.02

1.00 "i."26"

1.45

1.44

1.16

1.04

1.01

""."96"

June.

1.15 "i.'os"

1.40

1.14

1.07

1.05

1.05 "i.'oo"

.99

1.14

1.60

1.37

1.40

" "i.'os"

1.18

1.50

1.15

July.

1.05

.97

.94

"i."20"

.91

.92

1.14

1.22

1.60

1.16

1.30 "i."2o"

1.17

1.24

1.14

1.12

1.27

Aug.

1.00

.98

.95 "i.'sj"

1.09

1.39

1.37

1.54

1.15

"i.'os"

1.04

1.62

1.40

1.20

1.01

" i.'is"

1.10

Sept.

"i.'so"

1.43

1.34

1.28

1.52

1.20

"i."20"

1.17

1.12

1.15-

1.10

1.05

.......

1.46

1.09

1.00

1.32

1.07

Oct.

1.28

.95

1.18

.98

.95

"i."i2"

1.22

1.02

1.00

.94

1.07 "i.'io"

.92

.94

1.42

1.00

1.50

.......

Nov.

1.27

1.16

.. .95" -

1.48

1.21

1.06

1.62

1.43

1.14

1.08

1.02

1.00

.99

.95

"i."42"

1.10

1.02

Dec.

"i."82

1.37 "i.'io

1.35

1.32

"i."42

1.33

1.20

1.16

1.29

1.09

1.10

1.02

1.00

98

L28
58 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Hanapepe ditch at Hanapepe Falls, near Eleele^ Kauai,

for 1912 Continued.

Day.

21............... 

22............... 

23...............

24............... 

25...............

26............... 

27...............

28...............

29............... 

30...............

31...............

Jan.

"6" 95" 

1.34

.55 

.14

.14 

.14

.88 

.86

.90

Feb.

0.90 

1.20 

1.50

1.27

1.00 

.91

.88

.87

Mar.

1.11 

1.05 

.98

"i."25~

1.04 

.96

.95

.93 

.92

.94

Apr.

"i.~22" 

1.37

1.05 

1.67

1.32 

1.15

1.01

Q7

May.

1.00 

1.37 

1.43

1.50 

1.22

"i.'5o"

1.43

1.28 

1.28

1.20

June.

1.42 

1.25

1.33 

1.12

1.07 

1.07

1.02

1.02 

.97

July.

"i.'is"

1.10

1.30 

1.10

1.38 

1.10

1.05 

1.18

1.03

Aug.

i.io

1.40 

1.08

1.22

1.21 

1.54

1.42

1.22 

1.90

1.48

Sept.

1.05 

""."99"

.96 

.94

.92 

.92

1.00

"i."28"

Oct.

1.60 

1.38 

1.30

1.13 

1.11

1.68

1.43

1.33 

1.41

1.43

Nov.

1.12

1.58 

1.49 "i.'oi"

1.00 

.96

.94

1.15 

1.50

Dec.

1.84 "i.'io

1.45

1.28 

1.22

1.22 "i.'is

1.20

Daily discharge, in second-feet, of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai,

for 1912.

Day.

1. ..............

2. ..............

3. ............. .

4...............

5...............

6...............

7..... ....... ...

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

,Jan.

16.0

16.0

16.0

15.4

22.0

16.9

18.6

20.0

20.0

18.4

16.0

16.0

16.0

8.3

15.0

14.4

14.2

14.0

13.6

17.5

15.2 

13.0

21.8

57.5

.9

.9

.9

10.4

11.6

11.2

12.0

Feb.

12.0

11.8

11.8

11.5

11.2

11.0

11.0

11.0

12.0

11.2

11.0

10.8

10.6

10.4

10.2

10.2

10.6

10.3

10.0

10.0

12.0 

19.0

17.2

14.0

12.2

11.6

11.4

Mar.

12.0

11.0

11.1

11.2

10.6

10.4

10.6

12.0

25.7

29.8

23.6

26.5

19.8

19.0

18.1

19.4

19.8

16.3

16.3

16.3 

15.0

13.6

16. S

20.0

14.8

13.2

12.6

12.4

12.8

Apr.

12.2

11.6

11.4

22.6

12.4

12.4

17.4

22.4

21.4

20.2

19.6

17.2

15.2

14.8

14.4

16.0

16.0

13.8 OA K

23.0 

19.4

99 A

15.0

29.4

21.4

17.5

14.2

13.4

May.

13.2

13.4

19.0

28.0

21.4

14.8

15.6

17.2

16.0

14.4

14.0

16.5

19.0

24.0

23.8

17.8

14.8

14.2

13.7

13.2

14.0 

22.4

OO A

25.0

19.4

22.2

25.0

23.6

20.6

20.6

19.0

June.

17.5

16.6

15.6

23.0

17.2

15.4

15.0

15.0

14.5

14.0

13.8

17.2

28.0

22.4

23.0

19.0

15.0

18.4

25.0

17.5

23.4 

20.0

20.8

21.6

16.6

15.4

15.4

14.4

14.4

13.4

July.

15.0

13.4

12.8

15.9

19.0

12.2

12.3

12.4

17.2

19.4

28.0

17.8

21.0

20.0

19.0

16.1

19.8

17.2

16.6

20.4

19.0 

17.5

16.0

21.0

16.0

22.6

16.0

15.5

15.0

18-4

14.6

Aug.

14.0

13.6

13.0

16.3

19.6

15.8

22.8

22.4

26.2

17.5

16.2

15.0

14.8

28.4

23.0

19.0

14.2

15.6

16.9

16.0

16.0 

23.0

15.6

19.4

19.3

19.2

26.2

23.4

19.4

34.0

24.6

Sept.

24.8

25.0

23.6

21.8

20.6

25.6

19.0

19-0

19.0

18.1

16.6

17.5

16.0

15.0

19.6

24.2

15.8

14.0

21.4

15.4

15.0 

14.4

13.8

13.2

12.8

12.4

12.4

14.0

17.3

20.6

Oct.

20.6

13.0

18.4

13.6

13.0

14.8

16.6

19.4

14.4

14.0

12.8

15.4

15.7

16.0

12.4

12.8

23.4

14.0

25.0

26.5

28-0 

22.6

21.0

16.9

16.3

29.6

26.6

23.6

21.6

23.2

23.6

Nov.

20.4

17.8

15.4

13.0

24.6

19.2

15.2

28/4

23.6

20.4

17.2

15.6

14.4

14.0

13.8

13.0

18.2

23.4

16.0

14.4

16.6 

27.4

24.8

19.8

14.8

14.0

13.2

12.8

17.5

25.0

Dec.

28.7

32.4

22.4

22.7

23.0

22.0

21.4

22.4

23.4

21.6

19.0

17.8

20.8

15.8

15.9

16.0

14.4

14.0

13.6

20.6

32.8 

27.9

23.0

24.0

22.3

20.6

19.4

19.4

18.9

18.4

19.0

NOTE. Discharge interpolated for days for which, gage heights are missing. 

Monthly discharge of Hanapepe ditch at Hanapepe Falls, near Eleele, Kauai,for 1912.

Month.

February ..........................................

April ..............................................

May...............................................

July...............................................

September. ........................................

November. ............... ..... . . ..... ........

The year. ...................................

Discharge in second-feet.

Maximum.

57.5 

25.0 

29.8 

29.4 

28.0 

28.0 

28.0 

34.0 

25.6 

29.6 

28.4 

32.8

57.5

Minimum.

0.9 

10.0 

10.4 

11.4 

13.2 

13.4 

12.2 

13.0 

12.4 

12.4 

12.8 

13.6

.9

Mean.

15.5 

12.5 

16.3 

17.4 

18.7 

18.0 

17.3 

19.4 

17.9 

18.9 

18.1 

21.1

17.6

Run-off

(total in 

.acre-feet).

953 

719 

1,000 

1,040 

1,150 

1,070 

1,060 

1,190 

1,070 

1,160 

1,080 

1,300

12,800

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.
ISLAND OP KATJAI. 59

HANAPEPE DITCH AT KOULA, NEAR ELEELE, KATTAI.

Location. About 4 miles north, of Eleele, and 4 miles below intake.

Records available. January 1, 1910, to December 31, 1912.

Gage. Vertical staff; read once daily; datum unchanged.

Channel. Permanent.

Discharge measurements. Made from cross timber of flume.

Accuracy. Good.

Cooperation. Station maintained in cooperation with Hawaiian Sugar Co.

Discharge measurements of Hanapepe ditch at Koula, near Eleele, Kauai, in 1912.

Date.

Mar. 5

Nov. 7

Hydrographer.

W.V. Hardy....... ......................................................

Gage 

height.

Feet. 

2.56

2.78

Discharge.

Sec.-ft. 

40.0

41.9

Daily gage height, in feet, of Hanapepe ditch at Koula, nearEleele, Kauai,for 1912.

[S. W. Holmer, observer.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12............... 

13...............

14...............

15............... 

16...............

17...............

18...............

19............... 20.:.............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

3.40

3.40

3.45

3.35

3.70

3.70 

3.70

3.70

3.70

3.60

3.45

3.40 

3.70

3.30 

3.25

3.20

3.18

3.15

3.40

3.20

3.18

3.15

1.90

2.45

2.40

2.40

2.20

3:00

2.98

3.20

Feb.

3.10

3.10

3.05

3.00

3.00

2.95 

2.95

2<.95

2.95

3.20

3.00

2.. 90 

2.90

2.90

2.88 

2.88

2.92

2.90

2.88

2.80

3.05

3.70

3.70

3.70

3.35

3.20

3.15

3.02

.......

Mar.

3.10

3.10

3.25

3 nn

3.10 

2.85

2.60

3.10

3.10

3.10

3.10 

3.10

3.10

3.10 

3.10

3.10

3.10

3.20

2.95

2.92

2.80

2.60

3.10

2.80

2.73

2.60

2.63

2.74

Apr.

2.63

2.61

2.90

2.65

2.80

2.70 

3.10

3.10

3.10

3.10

3.10

3.05 

2.90

, 2.84 

2.82

2.10

2.10

3.10

2.94

3.10

3.10

2.92

3.10

3.10

3.06

2.80

2.70

May.

2.90

2.72

3.10

3.10

3.08 

2.92

3.10

3.00

2

CA

2.79

"2."90"

3.10

3.10 

3.10

2.96

2.60

2.72

2.74

3.10

3.10

3.10

3.10

3.00

3.10

3.10

3.10

3.10

3.10

June.

3.00

3.04

3.06

3.10 

2.88

2.88

3.10

2.88

2.78

2.68 

3.10

3.10

3.10 

3.10

3.10

3.10

3.00

3.10

3.10

3.10

3.10

3.00

3.00

2.84

2.77

July.

2.80

2.77

2.70

2.80

2.95

2.70 

3.06

2.86

2.78

3.10

3.10

3.10 

3.10

3.10

3.10 

3.19

3.10

3.10

3.10

3.10

3.10

3.10

3.10

3.10

3.06

3.10

3.02

2.88

3.08

2.85

Aug.

2.80

1.74

1.68

3.10

3.10 

3.10

3.10

3.10

3.00

3.10

2.06 

2.94

3.10

3.10 

3.08

2.93

2.80

2.74

2.67

3.10

2.84

3.10

3.10

3.10

3.10

2.78

3.08

3.10

Sept.

3.10

3.10

3.10

3.10

3.08

3.10 

3.10

2.10

3.00

2.92

2.92 

2.92

2.77

2.73 

2.70

3.10

2.73

2.96

2.80

2.76

3.10

2.70

2.60

2.52

2.48

2.48

2.45

2.55

3.00

Oct.

3.00

2.72

3.10

2.62

-2.70

"i'so"

2.90

3.08

3.00

2.55

2.52 

2.52

2.51

2.51 

2.50

2.58

2.85

3.10

3.10

3.10

3.10

3.10

2.90

2.75

3.10

3.10

3.10

3.10

3.10

3.10

Nov.

3.10

2.80

2.78

3.10

3.00 

3.00

2.80

3.10

2.98

2.78 

2.70

2.65

2.59 

2.50

2.70

3.10

2.62

3.10

2.96

3.10

3.00

2.75

2.60

2.55

2.55

3.08

3.10

Dec.

3.10

3.10

3.10

3.10

3.10

3.10

3.10.

3.10

3.10

3.10

2.94 

2.84

2.80

2.70

2.70

- 2.60

2

f\A

3.10

3.1Q

3.10

3.10

3.10

3.10

.3.10

3.10

3.10

3.10

NOTE. No reading on days for which gage heights are missing.
60 WATEB RESOTTBCES OF HAW AH, 1912.

Daily discharge, in second-feet, of Hanapepe ditch at Koula, near Eleele, Kauai, for 1912*

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

M.. .............

Jan.

59.3

59.3

60.6

58.0

65.4

65.4

65.4

65.4

65.4

62.7

60.6

59.3

65.4

61.0

56.7

55.4

54.1

53.6

52.8

59.3

54.1

53.6

52.8

23.2

35.4

34.2

34.2

29.5

49.0

48.5

54.1

Feb.

51.5

51.5

50.2

49.0

49.0

47.8

47.8

47.8

47.8

54.1

49.0

46.5

46.5

46.5

46.0

46.0

47.0

46.5

46.0

44.0

50.2

65.4

65.4

65.4

61.7

58.0

54.1

52.8

49.5

Mar.

51.5

51.5

53.4

55.4

49.0

51.5

45.2

39.0

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

54.1

47.8

47 0

44.0

39.0

45.2

51.5

44 o

42.5

A<) O

39.0

39.8

42.5

Apr.

1Q S

39.2

46.5

44.0

41.5

51.5

51.5

51.5

51.5

51.5

50.2

46.5

45.8

45.0

44.5

27.3

27.3

A.7 t\

51.5

47.5

51.5

51.5

47 0

51.5

51.5

50.5

47.2

44.0

41.5

May.

46 5

42.0

51.5

51.5

50.2

51.0

47.0

51.5

49.0

44.0

43.8

AS 9

46.5

51.5

51.5

51.5

48.0

39.0

42.0

42.5

51.5

51.5

51.5

51.5

49.0

51.5

51.5

51.5

51.5

51.5

June.

49.0

47.0

45.0

50.0

50.5

51.5

46.0

46.0

51.5

46.0

43.5

41.0

51.5

51.5

51.5

51.5

43.2

51.5

51.5

49.0

51.5

51.5

51.5

51.5

51.5

49.0

49.0

45.0

43.2

43.2

July.

44.0

43.2

41.5

44.0

47.8

41.5

50.5

45.5

43.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

50.5

51.5

49.5

47.8

46.0

51.0

45.2

Aug.

44.0

20.2

19.0

35.2

51.5

51.5

51.5

51.5

51.5

49.0

51.5

26.5

47.5

51.5

51.5

51.0

47.2

45.6

44.0

42.5

40.8

51.5

45.0

51.5

51.5

51.5

51 5

43.5

51.0

51.5

51.5

Sept.

51.5

51.5

51.5

 51.5

51.0

51.5

51.5

39.4

27.3

49.0

47.0

47.0

47.0

43.2

42.2

41.5

51.5

42.2

48.0

44.0

43.0

51.5

41.5

39.0

37.1

36.1

36.1

35.4

37.8

49.0

Oct.

49.0

42.0

51.5

39.5

41.5

42.8

44.0

46.5

51.0

49.0

37.8

37.1

37.1

36.8

36.8

36.6

38.5

45.2

51.5

51.5

51.5

51.5

51.5

46.5

42.8

51.5

51.5

51.5

51.5

51.5

51,5

Nov.

51.5

44.0

43.8

43.5

51.5

49.0

49.0

44.0

51.5

50.0

48.5

43.5

41.5

40.2

38.8

36.6

39.0

41.5

51.5

39.5

51.5

48.0

51.5

49.0

42.8

39.0

37.8

37.8

51.0

51.5

Dec.

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

47.5

45.0

44.0

42.8

41.5

41.5

39.0

40.0

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

51.5

NOTE. Discharge interpolated for days for which gage heights are missing.

Monthly discharge of Hanapepe ditch at Koula, near Eleele, Kauai, for 1912.

Month.

April..............................................

May...............................................

July...............................................

The year. ...................................

Discharge in second-feet.

Maximum.

65.4 

65.4 

55.4 

51.5 

51.5 

51.5 

51.5 

51.5 

51.5 

51.5 

51.5 

51.5

65.4

'Minimum.

23.2 

44.0 

39.0 

27.3 

39.0 

41.0 

41.5 

-19.0 

27.3 

36.6 

36.6 

39.0

19.0

Mean.

54.0 

51.1 

48.1 

45.9 

48.3 

48.5 

48.9 

46.0 

44.5 

45.8 

45.3 

49.2

48.0

Run-off 

(total in 

acre-feet).

3,320 

2,940 

2,960 

2,730 

2,970 

2,890 

3,010 

2,830. 

2,650 

2,820 

2,700 

3,030

34,800

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

HANAPEPE DITCH AT WEIR NEAR HANAPEPE.i KAUAL

Location. About 2J miles northeast of Hanapepe, below the last siphon crossing

Hanapepe River.

Records available. January, 1910, to December 31, 1912. 

Gage. Staff gage spiked to right bank of ditch; read once daily; zero on gage equals

crest of weir.

Channel. Permanent.

i Described in Water-Supply Paper 318, p. 85, as near Makaweli.
ISLAND OP KAUAI. 61

Discharge measurements. Measured by a 12-foot sharp-crested weir with end

contraction and from a plank across ditch. 

Accuracy. Records good. 

Cooperation. Station is the property of the Hawaiian Sugar Co. and records are

furnished at end of calendar year.

Daily discharge, in second-feet, of Hanapepe ditch at weir near Hanapepe, Kaitai,for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

42.5

42.5

42.5

42.5

42.5

45.1

45.1

45.1

46.4

46.4

46.4

43.8

43.8

12.4

12.4

40.0

21.8

40.0

38.8

38.8

41.2

40.0

37.5

37.5

12.4

26.0

26.0

26.0

28.2

35.2

37.5

Feb.

37.5

37.5

37.5

37.5

36.3

35.2

35.2

35.2

35.2

35.2

37.5

35.2

35.2

34.0

34.0

34.0

34.0

34.0

32.8

32.8

34.0

36.3

45.1

47.7

46.4

45.1

41.2

38.8

37.5

Mar.

34.0

37.5

37.5

41.2

37.5

36.3

37.5

38.8

40.0

45.1

46.4

47.7

47.7

47.7

46.4

46.4

47.7

47.7

47.7

42.5

41.2

40.0

38.8

37.5

40.0

43.8

37.5

37.5

37.5

37.5

37.5

Apr.

37.5

36.3

35.8

35.2

40.0

38.8

42.5

46.4

46.4

47.7

47.7

46.4

44.4

42.5

42.5

38.8

41.2

46.4

45.1

40.0

45.1

40.0

42.5

43.8

38.8

47.7

47.7

45.1

41.2

42.5

May.

40.0

40.0

41.2

45.8

49.0

49.0

45.1

43.8

46.4

41.2

40.0

37.5

35.2

45.1

46.4

43.8

39.4

35.2

35.8

35.2

40.0

42.5

45.1

45.1

43.8

41.2

46.4

46.4

42.5

44.4

June.

46.4

42.5

40.0

40.0

43.8

43.8

43.8

38.8

40.0

42.5

37.5

35.2

37.5

45.1

45.1

43.8

40.0

37.5

43.8

45.1

43.8

46.4

45.1

45.1

45.1

45.1

41.2

40.0

37.5

35.2

July.

35.2

35.2

35.2

35.2

35.2

37.5

35.2

41.2

36.3

37.5

42.5

45.1

46.4

49.0

47.7

46.4

46.4

46.4

46.4

46.4

46.4

46.4

46.4

46.4

46.4

46.4

46.4

42.5

42.5

40.6

42.5

Aug.

40.6

38.8

36.3

34.0

37.5

45.1

43.8

46.4

46.4

46.4

45.8

45.1

40.6

40.6

46.4

46.4

43.8

37.5

35.2

34.6

32.8

37.5

43.8

41.2

42.5

45.1

45.1

43.8

36.3

45.8

45.8

Sept.

44.4

45.1

44.4

45.1

45.1

46.4

46.4

45.1

45.1

44.4

41.2

41.2

42.5

40.0

36.3

36.3

38.8

40.0

36.3

37.5

37.5

32.8

37.5

32.8

30.4

29.3

28.2

28.2

30.4

35.2

Oct.

37.5

37.5

29.8

37.5

32.8

34.0

35.8

38.8

42.5

38.8

37.5

35.2

35.2

32.8

34.0

30.4

34.0

41.2

41.2

45.1

46.4

47.7

47.7

46.4

42.5

43.8

46.4

46.4

46.4

45.8

46.4

Nov.

45.8

45.1

40.6

40.6

40.0

46.4

45.8

42.5

46.4

49.0

49.0

43.8

38.8

37.5

35.8

34.6

32.8

32.8

41.2

37.5

40.0

40.6

43.8

43.8

42.5

39.4

35.8

35.2

36.3

42.5

Dec.

43.8

45.1

47.7

10.8

10.8

49.0

46.4

46.4

46.4

46.4

46.4

41.2

43.8

43.8

43.8

43.8

43.8

40.6

40.0

42.5

45.1

45.1

42.5

42.5

47.7

35.2

45.1

45.8

45.8

45.1

45.1

Monthly discharge of Hanapepe ditch at weir near Hanapepe, Kauai, for 1912.

Month.

March ....................................................

April....................................................

May.....................................................

June. ....................................................

July.....................................................

The year. ..........................................

Discharge in second-feet.

Maximum.

46.4 

47.7 

47.7 

47.7 

49.0 

46.4 

49.0 

46.4 

46.4 

47.7 

49.0 

49.0

49.0

Minimum.

12.4 

32.8 

34.0 

35.2 

35.2 

35.2 

35.2 

32.8 

28.2 

29.8 

32.8 

10.8

10.8

Mean.

36.3 

37.2 

41.4 

42.5 

42.2 

41.9 

42.6 

41.7 

38.8 

39.9 

40.9 

42.2

40.6

Run-off 

(total in 

acre-feet).

2,230 

2,140 

2,550 

2,530 

2,590 

2,490 

2,620 

2,560 

2,310 

2,450 

2,430 

2,590

29,500
62 WATER RESOURCES OF HAWAII, 1912.

HANAPEPE RIVER AT HANAPEPE FALLS, NEAR ELEELE, KATTAI.i

Location. About 8 miles north of Eleele and just above confluence with Hanapepe

River.

Records available. November 21, 1911, to December 31, 1912. 

Drainage area. 6.55 square miles. 

Gage. Vertical staff; datum unchanged. 

Channel. Permanent. 

Discharge measurements. Made from crest of dam. Dam is 75 feet long, 3 feet

wide, and height is 5 feet on lower side.

Daily gage height, in feet, of Hanapepe River at Hanapepe Falls, near Eleele, Kauai,

far 1912.

[S. W. Holmer, observer.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7..... ..........

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22............... 

23...............

24...............

25...............

26............... 

27. ..............

28.. ..:,-.. .......

29...............

30...............

31...............

Jan.

0.50

.20

.20

.45

""."75"

.30

.15

.14

.14

Feb.

0.20 

1.00

.30

.......

Mar.

0.28

.77

.72

1.12

.40

.25

.02

.05

.12

Apr.

6.35

.36

.20

.25

.50 

.10

.70

.18

May.

0.12

.65

.15

.12

.27

.09

.18

.52

.50

1.25

.62

.14

Tune.

0.70

.12

.20

.02

.12

.42

.08

.38

July.

0.24

.08

.65

.02

.60

.58

.17

.68

.27

.07

.......

.58

.35

Aug.

0.16

.10

.52

, .68

.27

.......

.19

.80

.30

1.30

.40

Sept.

0.44

.42

.24

.12

.72

.02

.02

.10

.......

.05

Oct.

0.12

.03

.36

.64

1.00

.12 

.08

.63

.24

.12

.20

.18

Nov.

0.80

.05

.12

.32

.27

.15 

.75

.......

.48

Dec.

1.47

2.45

.27

.17

.12

.34

.17

.22

1.45

"i"60

1.35

.42

.28

.17

08

. NOTE. Gage heights show days when water was flowing over dam. Station not visited Sundays, but 

lack of gage heights on week days indicates that all the water was diverted at the dam.

HILOA DITCH AT HANAPEPE FALLS, NEAR ELEELE, KAUAI.

Location. About 8 miles north of Eleele and 335 feet below intake.

Records available. November 22, 1911, to December 31, 1912.

Gage. Vertical staff; read at irregular hour once each day except Sundays; datum

unchanged.

Channel. Permanent. 

Discharge measurements. Made from plank across-ditch at gage.

Described in Water-Supply Paper 318, p. 86, as " Hiloa Stream at Hanapepe Falls, near Eleele, Kauai."
ISLAND OF KAUAI. 63

Discharge measurements of Hiloa ditch at Hanapepe Falls, near Eleele, Kauai, in 1912.

Date.

Mar. 6

Nov. 7

Hydrographer. Gage 

height.

Feet. 

1.86

1.82

Discharge.

Sec.-ft. 

35.7

35.5

Daily gage height, infect, of Hiloa ditch at Hanapepe Falls, near Eleele, Kauai,for 1912.

[ S. W. Holmer, observer.]

Day.

1. ..............

2...............

3...............

4...............

5............... 

6...............

7........ .......

8...............

9...............

10...............

11...............

12. ..............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.82

1.80

1.74

2.35 

1.95

2.15

2.15

2.02

1.80

1.79

2.01

1.48

1.78

1.70

1.63

1.62

2.12

"i.'sg"

2.58

1.06

1.35

1.35

1.35

1.58

1.56

1.70

Feb.

1.60

1.58

1.55

1.50 

1.49

1 4Q

1.49

1.51

1.65

1.48

1.47

1.46

1 4fi

1.45

1.48

1.44

1.43

1.50 

2.04

2.37

2.00

1.76

1.65

1.59

1.55

Mar.

1.90

1.59

1.70

1.55 

1.83

1 64

1 60

2.37

2.65

2.09

2.19

2.12

9 ftR

2.02

2.05

1.80

1.80

1.75

1.78

1.62

2.10

1.68

1.58

1.57

1.54

1.50

1.72

Apr.

1.50

1.50

1.47

1.90

1.58 

1.56

2.18

2.13

2.04

2.00

1.86

1.70

1 fid

1.66

2.05

1.66

2.27

"2. is"

2.18

1.67

2.52

1.97

1.78

1,58

1.53

May.

1.52

1.53

2.14

2.48

1.77

1 7";

2.20

1.80

1.58

1.59

1.66

2.16

2.20

1.96

1.67

1.59

1.53

1.74

2.15

2.22

2.34

2.00

2.30

1.98

1.74

2.10

2.02

June.

1.86

1.70

2.00

1.88 

1.78

1.68

1.60

1.63

1.62

2.50

2.17

2 94

2.08

2.18

1.92

2.35 

2.14

2.32

2.02

1.75

1.85

1.64

1.62

1.55

July.

1.90

1.65

1.54

2.22 

1.58

1 60

1.62

2.12

2.48

2.11

2.30

2.12

2.17

2.07

2.05

2.05

"2." 66"

1.99

2.40

1.98

1.94

1.87

1.69

1.84

1.64

Aug.

1.64

1.60

1.55

1.80 

1.76

2.20

2.20

2.45

1.86

1.63

1.64

2.52

1 95

1.88

1.68

1.62

1.60

1.60 

2.02

1.62

2.00

1.95

1.97

2.07

2.04

2.10

2.05

Sept.

2.07

2.02

1.92

1.94 

1.80

2.03

2.03

1.85

1.74

1.80

1.75

1.67

2.09

1.85

1 60

1.80

1.70 

1.63

1.59

1.54

1.50

1.48

1.47

1.54

2.10

Oct.

2.15

1.56

2.00

1.57

1.60

1.77

2.08

1.71

1.78

1.55

1.62

1.68

1.57

2

OQ

1.82

2.45

2.30 

2.15

2.10

1.81

1.77

2.45

2.22

2.12

- 2.19

2.18

Nov.

2.02

1.79

1.67

2.50 

2.12

1.81

2.22

2.24

1.80

1.68

1.60

1.56

1.53

1.50

2.32

1.72

1.62

1.76 

2.22

2.49

1.60

1.52

1.48

1.46

1.65

2.20

Dec.

2.78

2.10

2.10 

2.06

2.02

2.14

2.04

1.90

1.86

1.86

1.71

1.73

1.65

1.62

1.70

2.18 

2.74

2.80

2.35

2.10

2.00

2.05

1.97

2.06

HULEIA KIVEE BASIN. 

HULEIA RIVER NEAR LIHTJE, KAUAI.

Location. Three hundred feet above stone bridge where wagon road from Lihue to 

the Rice plantation crosses stream and about 4 miles southwest of Lihue.

Records available. May 8, 1912, to December 31, 1912.

Gage. Vertical low-water staff gage; inclined high-water gage; read once daily, 

about 9 a. m.; datum unchanged.

Channel. Practically permanent.

Discharge measurements. Made by wading.

Cooperation. Station is maintained in cooperation with Charles Rice.
64 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements of Huleia River near Lihue, Kauai, in 1912.

Date.

Feb. 12

May 8

Oct. 30

Nov. 13

Hydrographer.

W.V. Hardy.............................................................

.....do....................................................................

Gage 

height.

Feet. 

6.21

6.31

6.45

6.25

Discharge.

Sec.-ft. 

5.57

7.45

10.2

6.26

Daily gage height, in feet, of Huleia River near Lihue, Kauai, for 1912. 

[Win. Kaiawe, observer.]

Day.

1.. .............

2...............

3...............

4. ..............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24............... 

25...............

26...............

27...............

28. ..............

29...............

30...............

31...............

Jan.

.......

Feb.

6.21

Mar.

.......

Apr.

.......

May.

6.31

6.30

6.30

6.30

6.30

6.30

6.30

6.30

6.40

6.35

6.31

6.30

6.30

6.29

6.28

6.26

6.30

6.31 

6.30

6.30

6.30

6.35

6.37

6.32

6.31

June.

6.30

6.30

6.30

6.40

6.50

6.42

6.36

6.31

6.30

6.30

6.31

6.31

6.30

6.31

6.31

6.50

6.30

6.30

6.30

6.30

6.30

6.29

6.27

6.25 

6.25

6.25

6-25

6.25

6.25

6.25

July.

6.25

6.24

6.22

6.21

6.20

6.20

6.20

6.20

6.20

6.32

6.40

6.31

6.29

7.30

6.95

6.31

6.40

6.31

6.30

6.30

6.30

6.30

6.29

6.29 

6.30

6.30

6.29

6.30

6.30

6.30

Aug.

6.29

6.25

6.25

6.24

6.24

6.29

6.25

6.22

6.20

6.21

6.20

6.20

6.20

6.30

6.41

6.26

6.25

6.22

6.22

6.22

6.22

6.24

6.22

6.30 

6.29

6.29

7 tt

6.30

6.29

6.30

6.31

Sept.

6.30

6.25

6.30

6.30

6.30

7.70

6.38

6.30

6.30

6.30

6.25

6.22

6.21

6.20

6.20

6.20

6.20

6.20

6.25

6.21

6.20

6.20

6.20

6.20 

6.20

6.20

6.20

6.20

6.20

6.20

Oct.

6.22

6.20

6.20

6.20

6.21

6.20

6.20

6.23

6.29

6.30

6.31

6.31

6.22

6.22

6.20

6.20

6.20

6.20

6.25

6.30

7.10

6.40

6.30

6.30 

6.29

6.90

6.30

6.40

6.42

6.37

Nov.

6.31

6.31

6.30

6.30

6.30

6.30

6.30

6.30

7.30

6.35

6.35

6.33

6.25

6.22

6.22

6.21

6.21

6.29

6.24

6.21

6.25

6.30

6.35

6.31 

6.30

6.26

6.21

6.21

6.80

6.35

Dec.

6.40

8.10

8.50

7.60

7.30

7.10

7.10

7.10

6.90

6.81

6.75

6.75

6.70

6.65

6.63

6.60

6.60

6.59

6.55

6.60

6.60

6.55

7.60

8.10 

7.90

7.75

7.00

6.65

6.60

6.60

6.60

HANAMAULIT RIVER BASIN.

HANAMATTLTT RIVER AT KAPAIA, NE AR LIHTTE, KATTAI. 

Location. At wagon-road bridge about 600 feet north of the village of Kapaia and

1 mile north of Lihue.

Records available. September 4, 19113 to December 31, 1912. 

Gage. Vertical staff; read twice daily, at 9 a. m. and 5 p. m.; datum unchanged. 

Channel. Permanent. 

Discharge measurements. Made from lower side of bridge during high water and

by wading at low water. 

Accuracy. Records good.

Discharge measurements of Hanamaulu River at Kapaia, near Lihue, Kauai, in 1912,

Date.

Feb. 28

Mar. 15

Hydrographer.

W.V. Hardy.............................................................

Gage 

height.

Feet.

4.95

5.80

Discharge.

Sec.-ft.

6.47

35.9
ISLAND OF KAUAI. 65

Daily gage height, in feet, of Hanamaulu River at Kapaia, near Lihue, Kauai, for 1912.

[J. K. Gandall, observer.]

Day.

1..... ..........

2...............

4...............

5...............

7...............

8...............

9...............

10...............

11...............

19

13...............

14............... 

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

5.2

5.2

5.2

5.1

5.1

5.0

5.2

5.2

5.1

5.0

5.0

5.0

""5.'2"

5.1

5.1

4.9

4.9

4.9

4.8

4.8

5.6

5.6

5.3

5.3

5.5

5.4

5.4

Feb.

4.9

4.8

4.8

5.2

5.1

5.1

4.9

4.9

4.9

5.5

5.3

4.9

4.9

4.9

4.9

5.4

4.9

4.9

4.9

5.3

5.3

5.3

5.3

4.9

4.9

Mar.

4.9

4.9

5.4

5.5

5.5

5.5

5.5

5.7

5.5

5.7

5.7

5.8 

5.8

5.8

5.3

5.3

5.2

5.2

5.5

5.5

5.6

5.4

5.3

5.1

5.0

5.0

Apr.

5.1

5.2

5.1

5.1

5.1

5.2

5.2

5.0

5.6

5.4

5.0

5.0

"5.T"

5.0

7.5

6.15

5.7

5.5

5.3

5.2

5.1

5.3

5.3

5.3

5.6

5.3

May.

5.6

5.1

5.1

5.1

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0 

5.1

5.1

5.1

5.1

5.1

5.0

5.1

5.1

5.1

5.1

5.0

5.0

5.6

5.7

5.7

June.

5.7

5.8

5.7

5.6

5.3

5.2

5.5

5.1

5.1

5.1

5.1

5.0 

5.1

5.6

5.4

5.3

5.2

5.2

5.1

5.1

5.1

5.1

5.0

5.0

5.0

July.

5.0

5.0

5.0

z, n

5.0

 5.0

5.0

5.3

5.0

5.0

5.0

5.0 ""S's"

5.1

5.2

5.3

5.2

5.2

5.2

5.1

5.0

5.0

5.0

5.0

5.0

5.0

5.7

Aug.

5.5

5.1

5.1

5.1

5.1

4 Q

4.9

4.9

4.8

4.8

4 Q

4.9 

4.9

4.9

4.8

4.8

4.8

4.8

4.8

4.85

4.8

4.8

4.8

4.8

4.8

5.0

4.9

Sept.

5.1

4 9

4.8

4.8

4 Q

5.0

4.9

4.8

4.9

4 9

4 Q

4.9

4.8

4.8

4 Q

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

5.0

4 Q

Oct.

4.9

4.9

4 Q

5.0

5.0

5.0

5.0

5.0

4.9

4.9

4 Q

4.9 

4.8

4.8

5.0

4.9

4 0

4.8

4.8

4.9

5.0

5.0

5.0

4.7

4.7

4.7

4.7

Nov.

4.7

4.7

5.8

5.8

5.0

z, n

5.0

4.8

4.9

5.0

4 Q

4.7 

4.7

4.8

4.8

4.8

4.8

4.8

Dec.

......

5.38

5.7

5.7

5.7

Z, R

5.7

5.65

5.65

5.6

5.5

Daily discharge, in second-feet, ofHanamaulu River at Kapaia, near Lihue, Kauai,for 1912.

Day.

1............... 

2...............

3............... 

4............... 

5...............

6...............

7...............

9............... 10...............

11...............

iq

14............... 

15...............

16...............

17...............

18...............

19............... 

20...............

2i.. .............

22...............

23...............

24............... 

25...............

26............... 

27...............

28............... 

29............... 

30............... 

31...............

Jan.

11.3 

11.3

11.3 

9.0 

9.0

7.1

9.2 

11.3

11.3 

9.0

7.1

7.1

7.1

9.2 

11.3

9.0

9.0

5.6

5.6 

5.6

5.0

4.3

4.3

25.1 

25.1

14.0 

14.0

17.4 

20.9 

17.2 

17.2

Feb.

5.6 

4.3

4.3 

7.8 

11.3

9.0

9.0

5.6

5.6 

5.6

13.2

20.9

1,.0

5.6

5.6

5.6

5.6

11.4

17.2 

5.6

5.6

5.6

14.0

14.0 

14.0

14.0 

14.0

5.6 

5.6

Mar.

5.6 

5.6

11.4 

17.2 

20.9

20.9

20.9 

20.9

29.9 

25.4

20.9

29.9

29.9

35.2 

35.2

35.2

24.6

14.0

14.0 

11.3

11.3

20.9

20.9

23.0 

25.1

17.2 

14.0

9.0 

7.1 

7.1 

8.0

Apr.

9.0 

11.3

9.0 

9.0 

9.0

11.3

11.3 

11.3

7.1 

25.1

17.2

7.1

7.1

8.0 

9.0

7.1

160.0

57.6

29.9 

20.9

17.4

14.0

11.3

9.0 

14.0

14.0 

14.0

19.6 

25.1 

14.0

May.

25.1 

9.0

9.0 

9.0 

8.0

7.1

7.1 

7.1

7.1 

7.1

7.1

7.1

7.1

7.1 

9.0

9.0

9.0

9.0

9.0 

9.0

7.1

9.0

9.0

9.0 

9.0

8.0 

7.1

7.1 

25.1 

29.9 

29.9

June.

29.9 

32.6

35.2 

29.9 

25.1

14.0

11.3

20.9

15.0 

9.0

9.0

9.0

9.0

7.1 

9.0

17.0

25.1

17.2

14.0 

11.3

11.3

9.0

9.0

9.0 

9n

9.0 

7.1

7.1 

7.1 

7.1

July.

7.1 

7.1

7.1 

7.1 

7.1

7.1

7.1 

7.1

14.0 

7.1

71

7.1

7.1

21.2 

35.2

9.0

11.3

14.0

11.3 

11.3

11.3

11.3

9.0

7.1 

7.1

7.1 

7.1

7.1 

7.1 

7.1 

29.9

Aug.

20.9 

9.0

9.0 

9.0 

9.0

9.0

5.6 

5.6

5.6 

4.3

4.3

4.3

5.6

5.6 

5.6

5.6

4.3

4.3

4.3 

4.3

4.3

4.3

5.0

4.3 

4.3

4.3 

4.3

4.3 

4.3

7.1 

5.6

Sept.

7.3 

9.0

5.6 

4.3 

4.3

5.6

7.1 

6.4

5.6 

4.3

5.6

5.6

5.6

5.6 

5.0

4.3

4.3

5.6

7.1 

7.1

7.1

7.1

7.1

7.1 

7.1

7.1 

7.1

7.1 

6.4 

5.6

Oct.

5.6 

5.6

5.6 

7.1 

7.1

7.1

7.1 

7.1

7.1 

5.6

5.6

5.6

5.6

5.6 

4.3

4.3

7.1

5.6

5.6 

5.0

4.3

4.3

5.6

7.1 

7.1

7.1 

5.2

3.2 

3.2 

3.2 

3.2

Nov.

3.2 

3.2

19.2 

35.2 

35.2

7.1

7.1 

7.1

4.3 

5.0

5.6

7.1

5.6

3.2 

3.2

4.3

4.3

4.3

4.3 

4.3

4.3

.......

.......

.......

Dec.

......

......

......

-

16.6

29.9

29.9

29.9

29.9 

35.2

29.9 

27.5

27.5 

26.3 

25.1 

20.9

14694° WSP 336 14 5
66 WATEE RESOURCES OF HAWAII, 1912.

Monthly discharge of Hanamaulu River at Kapaia, near Lihue, Kauai, for 1912.

Month.

W^.......... .....................................

July...... .........................................

December 17 and 21-31. ...........................

Discharge In second-feet.

Maximum.

25.1 

17.2 

35.2 

160.0 

29.0 

35.2 

35.2 

20.9 

9.0 

7.1

Minimum.

4.3 

4.3 

5.6 

7.1 

7.1 

7.1 

7.1 

4.3 

4.3 

3.2

Mean.

11.00 

9.14 

19.10 

10.70 

10.60 

14.50 

10.40 

6.04 

6.14 

5.57 

8.43 

27.40

Run-off 

(total in 

acre-feet).

676 

526 

1,170 

1,170 

652 

863 

640 

371 

365 

342 

351 

652

7,780

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

B., 

B. 

B. 

B. 

B.

WAILUA RIVER BASIN. 

SOUTH FORK OF WAILUA RIVER ABOVE WAIEHU FALLS, NEAR LIHUE, KAUAI.

Location. About 7 miles northeast of Lihue, and 1 mile above Waiehu Falls.

Records available. December 10, 1911, to December 31, 1912.

Drainage area. 22.40 square miles.

Gage. Friez automatic register.

Channel. Practically permanent.

Discharge measurements. Made from cable and car.

Accuracy. Records good.

Discharge measurements of South Fork of Wailua River above Waiehu Falls, near Lihue,

Kauai, in 1912.

Date.

Feb. 18

Mar. 12

Oct. 29

Nov. 13

Hydrographer.

W. V. Hardy.. ...........................................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet. 

3.18

4.93

3.76

3.46

Discharge.

Sec.-ft. 

10.8

521

112

38.6

Daily gage height, in feet, of South Fork of Wailua River above Waiehu Falls, near Lihue,

Kauai, for 1912.

[Gus Schilling, observer.]

Day.

1.. .............

2...............

3............... 

4...............

5...............

6............... 

7............... 

8............... 

9...............

10...............

11............... 

12............... 

13............... 

14...............

15...............

Jan.

3.80

3.83 

3.84 

3.84

4.02

3.76 

3.76 

3.92 

3.96

3.88

3. §8 

3.78 

3.66 

3.94

3.76

Feb.

3.44 

3.42 

3.38

3.34

3.30 

3.33 

3.34 

3.38

3

OC

3.25 

3.13 

3.10 

3 09

3.09

Mar.

3.52

3.46 

3.50 

3.60

3.36

3.38 

3.47 

3.56 

4.62

4.40

5.10 

4.85 

6.08 

4 fid

4.80

Apr.

3.48

3.42 

3.40 

3.60

3.58

3.95 

4.90 

4.09 

4.27

4 00

3.84 

3.72 

3.63 

3.66

3.55

May.

3.55

3.55 

3.64 

3.61

3.65

3.40 

3.39 

3.60

0 Kf\

3.51

3.52 

3.42 

3.58

3 74

4.08

June.

3.57

3.52 

3.57 

3.70

3.71

3.60 

3.52 

3.65

3.87

3 £4

3.47 

3.44 

3.95 

3.75

3.64

July.

3.32

3.29 

3.24 

3.39

3.55

3.36 

3.55 

3.49

1 41

q QA

4.14 

3.85 

4.66 

6.26

5.00

Aug.

3.63

3.48 

3.40 

3.55

3.60

3.58 

3.54 

3.53 

3.50

3.46

3.52 

3.66 

3.89 

4 03

3.78

Sept.

3.82

3.88 

3.90 

3.90

3.88

4.25 

3.90 

3.93 

3.83

3.72

3.72 

3.64 

3.53 

3.40

3.47

Oct.

.......

...'."'.

"'."'.'.

Nov.

3.66

3.60 

3.60 

3.58

3.98

3.71 

3.66 

4.30 

4.20

3.67

3.59 

- 3.53 

3.46 

3.43

3.40

Dec.

4.08

6.53 

6.75

4.78

4.22

4.01 

3.93 

4.68 

4.12

3.91

3.87 

3.79 

3.74 

3.65

3.60
ISLAND OF KATJAI. 67

Daily gage height, in feet, of South Fork of Wailua River above Waiehu Falls, near I/ihue, 

Kauai, for 1912 Continued,

Day.

16...............

17............... 

18............... 

19............... 

20...............

21...............

22...............

23............... 

24...............

25...............

26............... 

27............... 

28...............

29...............

30...............

31...............

Jan.

-3.70

3.70 

3.68 

3.68 

3.60

3.55

3.60

3.82 

3.61

3.52

3.45 

3.48 

3.50

3.44

3.43

3.51

Feb.

3.11

3.21 

3.31 

3.31 

3.34

3.38

3.58

4.73 

3.96

3.66

3.56 

3.55 

3.52

3.47

Mar.

3.98

3.86 

3.80 

3.90 

3.74

3.70

3.70

3.68 

S.65

3.99

3.76 

3.94 

3.98

3.20

3.50

3.50

Apr.

3.78

5.62 

4.26 

3.98 

4.00

3.80

3.81

3.80 

3.60

3.75

3.66 

3.52 

3.53

3.60

3.57

May.

3.62

3.51 

3.42 

3.32 

3.25

3.29

3.53

3.48 

3.58

3.45

3.45 

3.98 

4.92

4.32

3.78

3.64

June.

.......

.......

.......

3.31

3.30

July.

5.16

4.08 

4.73 

4.08 

3.92

.......

"h'. 56

3.58

3.68

4.06

3.76

Aug.

3.67

3.60 

3.58 

3.55 

3.52

3.45

3.52

3.48 

3.47

3.50

3.48 

4.24 

3.55

3.42

3.94

3.80

Sept.

3.54

3.55 

3.55 

3.50 

3.50

3.40

3.40

3.40 

3.40

3.35

3.30 

3.25 

3.20

3.20

3.20

Oct.

.......

.......

.......

^ sn

3.86

3.75

Nov.

3.32

3.32 

3.40 

3.47 

3.39

3.51

3.80

4.15 

3.83

3.69

3.66 

3.64 

3.61

3.93

3.96

Dec.

3.67

3.53 

3.47 

3.54 

4.17

4.58

5.73

5.85 

7.05

6.05

4.80 

4.05 

3.70

3.62

3.60

3.59

NOTE. Gage heights for September affected by flow of water in float-well, but results are fair. Gage 

heights Oct. 1-28 not published because unreliable.

Daily discharge, in second-feet, of South Fork of Wailua River above Waiehu Falls, near

Lihue, Kauai, for 1912.

Day.

1.. ...........

2.............

3.............

4.............

5.............

6.............

7.............

8.............

9.............

10.............

11.............

12.............

13.............

14.............

15.............

16.............

17.............

18.............

19.............

20.............

21.............

22............. 

23.............

24.............

25.............

26.............

27.............

28.............

29.............

30.............

31.............

Jan.

115.0

123.0

126.0

126.0

177.0

105.0

105.0

148.0

159.0

137.0

137.0

110.0

81.2

154.0

105.0

90.0

90.0

85.6

85.6

68.0

59.0

68.0 

120.0

70.2

53.6

42.5

47.0

50.0

41.0

39.5

51.8

Feb.

47.0

41.0

38.0

32.6

27.8

23.0

26.6

27.8

32.6

32.6

18.0 '7.4

5.0

4.5

4.5

5.8

14.0

24.2

24.2

27.8

32.6

64.4 

442.0

157.0

81.2

60.8

59.0

53.6

45.5

.......

Mar.

53.6

44.0

50.0

68.0

30.2

32.6

45.5

60.8

398.0

311.0

590.0

490.0

990.0

406.0

237.0

165.0

131.0

115.0

142.0

100.0

on (1

90.0 

85.6

79.0

168.0

105.0

154.0

165.0

13.0

50.0

50.0

Apr.

47.0

38.0

35.0

68.0

64.4

156.0

510.0

200.0

262.0

171.0

126.0

95.0

74.6

81-. 2

59.0

110.0

798.0

259.0

165.0

171.0

115.0

118.0 

115.0

68.0

102.0

81.2

53.6

55.4

68.0

62.6

May.

59.0

59.0

76.8

70.2

79.0

35.0

33.8

68.0

50.0

51.8

53.6

38.0

64.4

100.0

197.0

72.4

51.8

38.0

25.4

18.0

22.0

55.4 

47.0

64.4

42.5

42.5

165.0

518.0

281.0

110.0

76.8

June.

62.6

53.6

62.6

90.0

92.5

68.0

53.6

79.0

134.0

57.2

45.5

41.0

156.0

102.0

76.8

73.0

69.2

65.4

61.7

57.9

54 1

50.3

46.7

4.9 Q

39.2

35.4

31.7

28.0

24.2

23.0

July.

25.4

22.0

17.0

33.8

59.0

30.2

59.0

48.5

36.5

126.0

217.0

128.0

414.0

1,080.0

550.0

614.0

197.0

442.0

197.0

148.0

135.0

123.0 

110.0

97.2

84.5

71.8

59.0

64.4

85.6

190.0

105.0

Aug.

74.6

47.0

35.0

59.0

68.0

64.4

57.2

55.4

50.0

44.0

53.6

81.2

139.0

181.0

110.0

83.4

68.0

64.4

59.0

53.6

42.5

53.6 

47.0

45.5

50.0

47.0

251.0

59.0

38.0

154.0

115.0

Sept.

120.0

137.0

142.0

142.0

137.0

255.0

142.0

151.0

123.0

95.0

95.0

76.8

55.4

35.0

46.0

57.2

59.0

59.0

50.0

50.0

35.0

35.0 

35.0

35.0

29.0

23.0

18.0

13.0

13.0

13.0

Oct.

.......

1

'

115.0

131.0

102.0

Nov.

81.2

68.0

68.0

64.4

165.0

92.5

81.2

273.0

237.0

83.4

66.2

55.4

44.0

39.5

35.0

25.4

25.4

35.0

45.5

33.8

51.8

115.0 

220.0

123.0

87.8

81.2

76.8

70.2

151.0

159.0

Dec.

197.0

1,220.0

1,320.0

462.0

244.0

174.0

151.0

422.0

210.0

145.0

134.0

112.0

100.0

79.0

68.0

83.4

55.4

45.5

57.2

227.0

382.0

842.0 

890.0

1,500.0

975.0

470.0

187.0

£0.0

72.4

68.0

66.2

NOTE. Discharge Interpolated for days for which gage heights are missing from June 16-28.
68 WATER EESOUECES OF HAWAII, 1912.

Monthly discharge of South Fork of Wailua River above Waiehu Falls, near Lihue, Kauai,

for 1912.

Month.

May...............................................

July...............................................

October ...........................................

November. .....................................

The period ..............................

Discharge in second-feet.

Maximum.

177.0 

442.0 

990.0 

798.0 

518.0 

156.0 

1,080.0 

251.0 

255.0

273.0 

1,500.0

Minimum.

39.5 

4.5 

13.0 

35.0 

18.0 

23.0 

'17.0 

35.0 

13.0

25.4 

45.5

Mean.

95.8 

50.4 

178.0 

144.0 

86.0 

62.6 

180.0 

75.8 

75.9

91.8 

356.0

Kun-off 

(total in 

acre-feet).

5,890 

2,900 

10,900 

8,570 

5,290 

3,720 

11,100 

4,660 

4,520

5,460 

21,900

84,900

Accuracy.

A. 

A. 

A. 

A. 

A. 

C. 

B. 

B. 

B.

A. 

B.

NOTE. No record Oct. 1-28.

LIHUE DITCH NEAR LIHUE, KATJAI.

Location. About 5 miles northwest of Lihue, at point where Kauai Electric Co.'s

power line crosses the ditch.

Records available. July 1, 1910, to December 31, 1912. 

Gage. Vertical staff; read once each day, at 6 a. m.; datum unchanged. 

Channel. Probably permanent.

Discharge measurements. Made by wading at various sections near gage. 

Accuracy. Records good.

Discharge measurements of Lihue ditch near Lihue, Kauai, in 191%.

Date.

Mar. 10

Nov. 13

 Hydrographer.

W.V.Hardy... ...................................... ....................

Gage 

height.

Feet. 

1.12

1.54

Discharge.

Sec.-ft. 

7.57

8.96

Daily gage height, in feet, of Lihue ditch near Lihue, Kauai, for 191%. 

[Mori, observer.]

Day.

1...............

2...............

3...............

4...............

5.. .............

6..'.............

7...............

8...............

9...............

10...............

11............... 

12...............

13...............

14............... 

15...............

16. .............. 

17...............

18...............

19...............

20...............

Jan.

0 9

9

9

9

9

9 

9

9

9

9 

9

9

9

1 1

Feb.

1.0

1.0

.9

.9

.9

.9

.9

.9

1.0

1.0

1.0 

.95

.95

.85 

.85

.85 

.85

.85

.85

.85

Mar.

1.4

1.4

1.4

1.4

1.4

1.4

1.1

1.1

1.1

1.1

1.25 

1 1

1.3

1.3 

1 i

Apr.

0.9

1.1

1.05

1.1

1.0 

1.0

1.0

1.2

1.2

1.2

1.2

.6

.6

.6

May.

1.4

1.4

1.5

1.5

1.5

1.5

1.45

1.5

1.5

1.4

1.4 

1.4

1.4

1.5 

1.5

1.5 

1.4

1.4

1.4

1.4

June.

1.6

1.55

1.55

1.6

1.6

1.5

1.5

1.5

1.6

1.6

1.55 

1.5

1.5

1.6

1.6

1.5 

1.5

1.5

1.5

1.5

July.

1.55

1.55

1.5

1.5

1.5

1.5

1.6

1.6

1.6

1.6

1.6 

1.6

1.6

1.6

1.5 

1.65

1.6

1.6

1.6

Aug.

1.5

1.5

1.5

1.5

1.55

1.6

1.6

1.6

1.6

1.6

1.6 

1.6

1.6

1.65 

1.6

1.6 

1.6

1.6

1.6

1.6

Sept.

1.65

1.65

1.6

1.6

1.6

1.6

1.6

1.6

1.55

1.5

1.5 

1.45

1.45

1.45

1 4.<\

1.45 

1.45

1.45

1.45

1.5

Oct.

1.55

1.50

1.60

1.55

1.60

1.60

1.60

1.60

1.55

1.70

1.70 

1.65

1.65

1.65 

1.65

1.65 

1.65

1.65

1.70

1.65

Nov.

1.55

1.60

1.60

1.60

1.70

1.70

1.65

1.65

1.66

1.65

1.62 

1.50

1.52

1.50 

1.50

1.45 

1.45

1.50

1.55

1.60

Dec.

1.55

1.60

1.60

.70

......

"i.'49

1.49

1.55

1.70
ISLAND OP KATJAI. 69

Daily gage height, in feet, ofLihue ditch near Lihue, Kauai,for 1912 Continued.

Day.

2L... ............

22... ............

23...............

24...............

25...............

26. ..............

27...............

28...............

29...............

30...............

31...............

Jan.

1.1

1.1

1.4

1.4

1.4

1.2

1.2

1.2

1.2

1.2

1.2

Feb.

0.85

1.1

1.1

1.2

1.2

1.2

1.2

1.2

1.4

Mar.

09

9

9

9

9

9

9

9

9

Apr.

0.6

.6

.6

1.4

1.4

1.4

1.35

1.35

1.4

1.4

May.

1.5

1.5

1.5

1.5

1.5

1.5

1.5

1.6

1.6

1.6

1.6

June.

1.55

1.6

1.6

1.6

1.55

1.55

1.55

1.55

1.5

1.5

July.

1.6

1.6

1.5

1.55

1.5

1 <;

1.5

1.55

1.55

1.55

1.55

Aug.

1.55

1.6

1.6

1.55

1.6

1.6

1.6

1.6

1.65

1.65

1.65

Sept.

1 <;

1 <;

1.5 1 <;

1.4

1.4

1.4

1.4

1.55

1.6

Oct.

1.65

1.65

1.65

1.60

1.60

1.70

1.70

.95

1.65

1.50

1.50

Nov.

1.63

1.65

1.36

1.36

1.45

Dec.

1.50

1.60

1.45

1.55

1.35

1.30

1.30

1.30

1.30

1.30

1.25

NOTE. Ditch dry Jan. 1-5, Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, and Dec. 5-16.

Daily discharge, in second-feet, of Lihue ditch near Lihue, Kauai,for 1912.

Day.

1... ............

2...............

3...............

4...............

5............... 

6...............

7............... 

8...............

9............... 

10...............

11............... 

12............... 

13...............

14............... 

15... ............

16............... 

17...............

18...............

19...............

20...............

%..... ...........

22...............

23...............

24...............

25...............

26............... 

27...............

28...............

29............... 

30... ............

31.....---.......

Jan.

5.1

5.1 

5.1

5.1 

5.1

5.1 

5.1 

5.1

5.1

5.1

5.1

5.1

5.1

5.1

6.5

6.5

6.5

8.8

8.8

8.8

7.2

7.2

7.2

7.2

7.2

7.2

Feb.

5.8

5.8

5.1

5.1

5.1 

5.1

5.1 

5.1

5.8 

5.8

5.8 

5.4 

5.4

4.8 

4.8

4.8 

4.8

4.8

4.8

4.8

4.8

6.5

6.5

7.2

7.2

7.2

7.2

7.2

8.8

Mar.

8.8

8.8

8.8

8.8

8.8 

8.8

6.5

6.5

6.5 

6.5

7.6 

8.0 

8.0

8.0 

8.0

5.1

5.1

5.1

5.1

5.1

5.1

5.1 

5.1

5.1

Apr.

5.1

6.5

6.2

6.5

.......

5.8 

5.8 

5.8

7.2 

7.2

7.2 

7.2

3.1

3

1

3.1

3.1

3.1

3.1

8.8

8.8

8.8

8 A

8.4

8.8 

8.8

May.

8.8

8.8

9.6

9.6

9.6 

9.6

9.2

9.6

9.6 

8.8

8.8 

8.8 

S.8

9.6 

9.6

9.6

8.8

8.8

8

Q

8.8

9.6

9.6

9.6

9.6

9.6

9.6

9

R

10.4

10.4 

10.4

10.4

June.

10.4

10.0

10.0

10.4

10.4 

9.6

9.6

9

R

10.4 

10.4

10.0 

9.6

Q fi

10.4 

10.4

9.6

9

R

9.6

9 a

9

R

10.0

10.4

10.4

10.4

10.0

10.0 

10.0

10.0

9.6

9

R

July.

10.0

10.0

9.6

9

R

9.6 

9.6

10.4 

10.4

10.4 

10.4

10.4 

10.4 

10.4

10.4

9.6 

in R

10.4

10.4

10.4

10.4

10.4

9 a

10.0

9.6

9.6

9 a

10.0

10.0 

10.0

10.0

Aug.

9.6

9.6

9.6

9.6

10.0 

10.4

10.4 

10.4

10.4 

10.4

10.4 

10.4 

10.4

10.8 

10.4

10.4 

10.4

10.4

10.4

10.4

10.0

10.4

10.4

10.0

10.4

10.4 

10.4

10.4

10.8

in Q

10.8

Sept.

10.8

10.8

10.4

10.4

10.4 

10.4

10.4 

10.4

10.0 

9.6

'9.6 

9.2

9

n

9.2

9.2

9.2

9 9

9.2

9 9

9

0.

9 a

9 p.

9

0.

9.6

8.8

8.8

8 8

8

Q

10.0 

10.4

Oct.

10.0

9.6

10.4

10.0

10.4 

10.4

10.4 

10.4

10.0 

11.2

11.2 

10.8 

10.8

10.8 

10.8

10.8 

10.8

10.8

11.2

10.8

10.8

10.8

10.8

10.4

10.4

11.2 

11.2

5.4

10.8

9

R

9.6

Nov.

10.0

10.4

10.4

10.4

11.2 

11.2

10-8 

10.8

10.9 

10.8

10.6 

9.6 

9.8

9.6 

9.6

9.2 

9.2

9.6

10.0

10.4

10.6

10.8

8.5

8.5

8.5

"~9~2~

Dec.

10.0

10.4

10.4

3.7

......

'"9.5

9.5

10.0

11.2

9.6

10.4

9.2

10.0

8.4

8.0 

8.0

8.0

3.0 

8.0

7.6

NOTE. Ditch dry Jan. 1-5, Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, and Dec. 5-16. 

Monthly discharge of Lihue ditch near Lihue, Kauai, for 1912.

Month.

March 1-1 5, 23-31 ..................................

Aprill-4,11-30....................................

Mly.. ............ .................................

July 1-14,16-31. ...................................

Discharge in second-feet.

Maximum.

8.8 

8.8 

8.8 

8.8 

10.4 

10.4 

10.8 

10.8 

10.8 

11.2 

. 11.2 

11.2

11.2

Minimum.

5.1 

4.8 

5.1 

3.1 

8.8 

9.6 

9.6 

9.6 

8.8 

5.4 

8.5 

3.7

3.1

Mean.

6.17 

5.74 

6.85 

6.25 

9.43 

9.97 

10.10 

10.30 

9.68 

10-40 

10.00 

8.94

8.76

Run-off 

(total in 

acre-feet).

318 

330 

326 

297 

580 

593 

601 

633 

576 

640 

517 

337

5,750

Accuracy.

C. 

C. 

C. 

C. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

NOTE. Ditch dry Jan. 1-5 Mar. 16-22, Apr. 5-10, July 15, Nov. 26-29, Dec. 5-16. 

Mean for month is mean of actual number of days when ditch carried water. Mean for year is mean of 

actual number of days when ditch carried water.
70 WATER RESOURCES OP HAW AH, 1912.

HANAMATJLtr DITCH AT SIPHON NEAR LIHUE, EAtTAI.

Location. About 6 miles northwest of Lihue, in flume 180 feet above point at which 

the Kauai Electric Co.'s power line crosses the South Fork of Wailua River.

Records available. July 1, 1910, to December 31, 1912.

Gage. Vertical staff; read once daily at 6 a. m. September 30, 1911, a gage was 

installed on left side of flume, 18 feet from its upper end.

Channel. Wooden flume.

Discharge measurements. Made in flume.

Accuracy. Records good.

Discharge measurements of Hanamaulu ditch at siphon near Lihue, Kauai, in 1912.

Date.

Mar. 10

Do...

Nov. 13

Hydrographer.

W.V. Hardy..... ........................................................

Gage 

height.

Feet. 

0.80

1.52

2.28

Discharge.

Sec.-ft. 

6.22

20.8

38.8

Daily gage height, in feet, of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912.

[Mori, observer.]

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.10

1.10

1.10

1.10

1.10

1.10

1.10

1.10

1.10

1.10

.70

1.10

1.10

1.10

1.10

1.10

1.10

1.10

1.10

1.85

1.85

1.80

1.80

1.80

2.10

2.10

2.10

2.10

2.30

2.30

2.20

Feb.

2.50

2.50

2.50

2.50

2.45

2.50

2.50

2.45

2.50

2.40

2.40

2

AC\

2.40

2.40

2.40

2.40

2.40

2.35

2.35

2.35

2.35

2.50

2.50

2.50

2.50

2.50

2.20

2.20

2.40

Mar.

2.40

2.40

2.50

2.40

2.40

2.40

2.30

2.30

2.30

1.30

1.35

1 *%Cl

1.30

1.00

1.00

1.00

1 00

1.30

1.30

1.30

1.30

2.00

2.00

2.00

2.00

1.80

1.80

1.80

1.80

1.80

1.80

Apr.

1.80

1.80

1.80

1.85

9 i<;

2.15

2.30

2.25

2.15

2.15

2.10

2.05

2.10

2.10

9 i<;

2.25

1.40

1 40

1.40

1 40

1.40

2.25

. 2.25

2.20

2.20

2.20

2.20

2.20

May.

2.20

2.20

2.50

2.50

2.50

2.50

2.45

2.50

2.50

2.40

2.40

2.50

2.50

2.50

2.50

2.50

2.50

2.45

2.40

2.40

2.50

2.50

2.50

2.50

2.50

2.55

2.55

2.55

2.55

2.50

2.50

June.

2.50

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.45

2.30

2.30

2.30

2.45

2.45

2.45

2.45

2.40

2.40

2.40

2.40

2.40

2.40

July.

2.40

2.40

2.30

2.30

2.30

2.35

2.40

2.40

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.20

2.45

2.45

2.45

2.45

2.45

2.40

2.40

2.40

2.40

2.40

2.45

2.45

2.40

2.45

2.45

Aug.

2.40

2.40

2.25

2.25

2.40

2.45

2.45

2.45

2.50

2.50

2.50

2.40

2.35

2.35

2.50

2.40

2.45

2.40

2.40

2.35

2.35

2.40

2.40

2.40

2.45

2.45

2.45

2.45

2.45

2.45

2.45

Sept.

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.40

2.30

2.30

2.25

2.25

2.25

2.25

2.45

2.40

2.40

2.40

2.45

2.45

2.45

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.45

Oct.

2.45

2.40

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.50

2.45

2.45

2.35

2.35

2.35

2.45

2.45

2.45

2.45

2.45

2.45

2.45

2.40

2.40

2.45

2.45

2.45

2.43

2.45

2.45

Nov.

2.30

2.15

2.15

2.25

2.45

2.45

2.40

2.45

2.45

2.45

2.43

2.25

2.26

2.25

2.25

2.25

2.25

2.25

2.30

2.45

2.45

2.40

1.30

1.30

1.30

<rt

<<0

2.40

2.45

2.30

Dec.

2.25

2.30

2.30

1.30

.90

.90

.90

1.00

.90

.90

.90

.90

2.05

2.00

2.00

2.00

2.05

2.05

2.25

2.45

2.30

2.30

2.30

2.40

2.30

2.25

2.25

2.25

2.25

2.20

2.20

a Ditch dry Nov. 26-27.
ISLAND OF KAUAI. 71 

Daily discharge, in second-feet, of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

ii....:..........

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

11.0

11.0

 11.0

11.0

11.0

11.0

11.0

11.0

11.0

11.0

5.0

11.0

11.0

11.0

11.0

11.0

11.0

11.0

11.0

28.0

28.0

27.0

27.0

27.0

34.0

34.0

34.0

34.0

39.0

39.0

37.0

Feb.

44.0

44 0

44.0

44.0

43.0

44.0

44.0

43 0

44.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

40.5

40.5

40.5

40.5

44.0

44.0

44.0

44.0

37.0

37.0

42.0

.......

Mar.

42.0

42.0

44.0

42.0

42.0

42.0

39.0

39.0

39.0

15.0

16.0

15.0

15.0

9.2

9.2

9.2

9.2

15.0

15.0

15.0

15.0

32.0

32.0

32.0

32.0

27.0

27.0

27.0

27.0

27.0

27.0

Apr.

27.0

97 n

27.0

28.0

35.5

35.5

39.0

38.0

35.5

35.5

34.0

33.0

34.0

34.0

34.0

35.5

38.0

17.0

17.0

17.0

17.0

17.0

17.0

38.0

38.0

37.0

37.0

37.0

37.0

37.0

May.

37.0

37.0

44.0

44.0

44.0

44.0

43.0

44 0

44 0

42.0

42.0

44 0

44.0

44 0

44 0

44.0

43.0

42.0

42.0

44.0

44 0

44.0

44.0

44.0

45.0

45.0

45.0

44.0

44.0

June.

44.0 AO n

42.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

43.0

39.0

39.0

39.0

43.0

43 0

43.0

43.0

42.0

42.0

42.0

42.0

42.0

42.0

July.

42.0

Af) A

39.0

39.0

39.0

40.5

42.0

43 0

43.0

43 0

43.0

43.0

43 0

43.0

37.0

43.0

43.0

43.0

43.0

43.0

42.0

42.0

42.0

42.0

42.0

43 0

43.0

42.0

43.0

43.0

Aug.

42.0

42.0

38.0

38.0

42.0

43.0

43.0

43.0

44.0

44.0

44 0

42.0

40.5

40.5

44.0

42.0

43.0

42.0

42.0

40.5

40.5

42.0

42.0

42.0

43.0

43.0

43.0

43.0

43.0

43.0

43.0

Sept.

43.0

43 0

43.0

43.0

43.0

43.0

43.0

43 0

42.0

39.0

39.0

38.0

38.0

38.0

38.0

43.0

42.0

42.0

42.0

43.0

43.0

43.0

42.0

42.0

42.0

42.0

42.0

42.0

42.0

43.0

Oct.

43.0

42.0

43.0

43.0

43.0

43.0

43.0

43.0

43.0

43.0

44 0

43.0

4.10

40.5

40.5

40.5

43.0

43.0

43.0

43.0

43.0

43.0

43.0

42.0

42.0

43.0

43.0

43.0

42.6

43.0

43.0

Nov.

39.0

35.5

35.5

38.0

43.0

43.0

42.0

43.0

43.0

43.0

42.6

38.0

38.2

38.0

38.0

38.0

38.0

38.0

39.0

43.0

43.0

42.0

15.0

15.0

15.0

42.0

43.0

39.0

Dec.

38.0

39.0

39.0

15.0

7.6

7.6

7.6

9.2

7.6

7.6

7.6

7.6

33.0

32.0

32.0

32.0

33.0

33.0

38.0

43.0

39.0

39.0

39.0

42.0

39.0

38.0

38.0

38.0

38.0

37.0

37.0

Monthly discharge of Hanamaulu ditch at siphon near Lihue, Kauai, for 1912.

Month.

April..............................................

May...............................................

July...............................................

The period ..................................

Discharge in second-feet.

Maximum.

39.0 

44.0 

44.0 

39.0 

45.0 

44.0 

43.0 

44.0 

43.0 

44.0 

43.0 

43.0

45.0

Minimum.

5.0 

37.0 

9.2 

17.0 

37.0 

39.0 

37.0 

38.0 

38.0 

40.5 

15.0 

7.6

5.0

Mean.

19.1

. 42.3 

26.4 

31.1 

43.4 

41.9 

42.0 

42.2 

41.7 

42.7 

37.5 

28.8

& 36. 5

Run-off 

(total in 

acre-feet).

1,170 

2,430 

 1,620 

1,850 

2,670 

2,490 

2,580 

2,590 

2,480 

2,630 

2,080 

1,770

26,400

Accuracy.

A.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

o Ditch dry Nov. 26-27. b Mean for year is mean for 364 days when ditch carried water. 

NORTH FORK OF WAILUA RIVER NEAR LIHtJE, KAUAI.

Location. About 8 miles northwest of Lihue, and 2 miles above the Kaholalele Falls. 

Records available. August 1, 1910, to October 28, 1910; December 28, 1910, to

December 31, 1912. 

Drainage area. 14.63 square miles. 

Gage. Friez automatic register; datum unchanged. 

Channel. Practically permanent.

Discharge measurements. Made from a footbridge and wire suspension bridge. 

Accuracy. Record good.
72 WATER RESOURCES OF HAWAII, 1912. 

Discharge measurements of North Fork of Wailua River near Lihue, Kauai, in 1912.

Date.

Feb. 18

Mar. 11

July 31

Hydrographer.

W.V. Hardy.............................................................

.....do....................................................................

Gage 

height.

Feet. 

0.45

2.40

.62

Discharge.

Sec.-ft.

1Q 4

358.0

43.0

Daily gage height, in feet, of North Fork of Wailua River near Lihue, Kauai, for 1912.

[Mori, observer.]

Day.

1. ..............

2...............

3...............

4...............

5............... 

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17............... 

18............... 

19............... 

20...............

21............... 

22...............

23

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

'Jan.

0.85

.86

.87

1.08

1.04 

.98

.97

1.16

1.19

1.03

.96

.95

.96

1.23

.97

.90

.89

.88 

.86 

.86

.84 

.81

.83

.78

.77

.76

.76

.74

.75

.75

.75

Feb.

0.75

.75

.75

.60

.57 

.59

.59

54

.48

.47

.47

.46

.45

.45

.45

.45

.45 

.45 

.45 

.45

.45

.46

1.40

.80

.77

.77

.74

.73

.72

.......

Mar.

0.82

.69

.94

.70

.64 

.65

.70

.72

1.66

1.66

1.98

1.90

2.95

1.82

1.44

1.20

1.16 

1.08 

.92 

.92

.87 

1.05

.90

1.14

1.64

1.00

.90

.86

.82

.84

.84

Apr.

0.81

.78

.77

.95

.92 

1.14

1.92

1 91

1.35

1.01

.92

.86

1.01

.98

84

1.08

3.04 

1.56 

1.23 

1.30

1.14 

1.12

1.06

QQ

1.01

01

.85

ai

.80

an

May.

0.79

.79

.88

.92

.81 

.78

.78

84

.76

.76

.66

.60

.60

.82

.92

.61

.60 

.60 

.60 

.60

.62 

.65

.65

.72

.60

.60

.86

1.66

1.15

.72

.62

June.

0.62

.65

.73

.84

.68 

.66

.65

.68

.68

.68

.68

.68

.92

.72

.70

.70

.70 

.70 

.75 

.70

.76

.70

.50

QO

.50

1.20

.90

.57

.50

.50

July.

0.50

.52

.54

.56

.58 

.60

.82

.61

.62

1.02

1.40

.82

1.74

2.93

2.00

1.28

1.96 

1.20 

1.01 

1.00

1.06 

.96

.91

1.04

.81

.96

.74

.65

.65

.72

.63

Aug.

0.57

.50

.50

.49

.64

.70

.76

.82

.81

.60

.54

.50

.50

1.45

.89

.66

.60 

.52 

.50 

.49

.50 

.76

.59

.68

.60

.80

1.59

.81

.84

1.27

.92

Sept.

0.93

.99

.88

.72

.60 

1.25

.76

.68

.62

.58

.64

.58

.52

.49

.47

.57

.54 

.47 

.50 

.51

.52 

.76

.52

.47

.44

.42

.42

44

.46

.53

Oct.

0.76

.48

.82

.82

.80 

.58

.70

.94

.68

.74

1.01

.83

.62

.61

.56

.57

.67 

.69 

1.06 

1.06

1.17 

.97

.88

.67

.84

1.32

.88

.97

.81

.77

.73

Nov.

0.62

.58

.58

.56

.63

1.12

1.08

.77

.68

.61

.55

.52

.58

.52

"i.'io"

1.37

.98

.85

.76

.63

.70

1.28

.98

Dec.

1.42

3.12

3.52

2.33

1.67 

1.32

1.19

1.81

1.25

1.09

.93

.86

.83

.77

.78

.82

.61 

.60 

1.10 

1.06

1.36 

1.63

1.77

? 14

1.92

1 44

1.17

1.03

.90

.86

.85

NOTE. Low water gage heights previous to July 25 may be high by 0.1 to 0.3 on account of mud in float 

well. No record Nov. 17-21.

Daily discharge, in second-feet, of North Fork of Wailua River near Lihue, Kauai, for 1912.

Day.

1...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Jan.

54.5

55.6

56.7

82.4

77.2

69.6

68-4

93.4

97.6

75.9

67.2

66.0

67.2

104.0

68.4

Feb.

44.0

44.0

44.0

30.0

27.9

29.3

29.3

25.8

21.8

21.2

21.2

20.6

20.0

20.0

20.0

Mar.

51.2

38.1

64.8

39.0

33.6

34.5

39.0

41.0

179.0

179.0

255.0

234.0

571.0

215.0

137.0

Apr.

50.1

47.0

46.0

66.0

62.4

90.6

239.0

100.0

73.3

62.4

55.6

73.3

69.6

63.4

May.

48.0

48.0

57.8

62.4

47.0

47.0

53.4

45.0

45.0

35.4

30.0

30.0

51.2

62.4

June.

31.8

34.5

42.0

53.4

37.2

35.4

34.5

37.2

37.2

37.2

37.2

37.2

62.4

41.0

39.0

July.

23.0

24.4

25.8

27.2

28.6

30.0

51.2

30.9

31.8

74.6

130.0

51.2

196.0

563.0

260.0

Aug.

27.9

23.0

23.0

22.4

33.6

39.0

45.0

51.2

50.1

30.0

25.8

23.0

23.0

138.0

58.9

Sept.

63.6

70.8

57.8

41.8

30.0

106.0

45.0

37.2

31.8

28.6

33.6

28.6

24.4

22.4

O? 9 AL* £»

Oct.

45.0

21.8

51.2

51.2

4Q n

28.6

39.0

64.8

37.2

43.0

73.3

52.3

31.8

30.9

27.2

Nov.

31.8

28.6

28.6

27.2

29.0

30.9

32.7

87.8

82.4

46.0

37.2

30.9

26.5

24.4

28.6

Dec.

133.0

638.0

809.0

356.0

181.0

117.0

97.6

212.0

106.0

83.7

63.6

55.6

52.3

46.0

47.0
ISLAND OF KAT7AI. 73

Daily discharge, in second-feet, of North Fork of Wailua River, near Lihue, Kauai, for

1912 Continued.

Day.

16...............

17...............

18...............

10

20...............

21............... 

22...............

23...............

24...............

25...............

26...............

27...............

28............... 

29...............

30...............

31...............

Jan.

60.0

58.9

57.8

KK fi

KK C

53.4 

50.1

52.3

47.0

46.0

45 0

45.0

43.0 

44.0

44.0

A, t n

Feb.

20.0

20.0

20.0 

20.0

20.0

20.0 

20.6

130.0

49 0

46.0

46 0

43 0

42.0 

41.0

Mar.

99.0

93.4

82.4 

62.4

co A

56.7 

78.5

60.0

90.6

174.0

72.0

60.0

55.6 

51.2

53.4

53.4

Apr.

82.4

606.0

158.0 

104.0

114.0

90.6

87.8

79.8

63.6

73.3

66.0

54 5

50.1 

49.0

49.0

May.

30.9

30.0

30.0 

30.0

30.0

31.8 

34.5

34.5

41.0

30.0

30.0

55.6

179.0 

92.0

41.0

31.8

June.

39.0

39.0

39.0 

44 o

39.0

45.0 

39.0

23.0

51.2

23.0

99.0

60.0

27.9 

23.0

23.0

July.

111.0

250.0

99.0 

73.3

79 n

79.8 

67.2

61.2

77.2

50.1

67.2

43.0

34.5 

34.5

41.0

32.7

Aug.

35.4

30.0

24.4 

23.0

22.4

23.0 

45.0

29.3

37.2

30.0

49.0

164.0

50.1 

53.4

110.0

62.4

Sept.

27.9

25.8

21.2 

23.0

23.7

24.4 

45.0

24.4

21.2

19.4

18.2

18.2

19.4 

20.6

25.1

Oct.

27.9

36.3

38.1 

79.8

79.8

94.8 

68.4

57.8

36.3

53.4

117.0

57.8

68.4 

50.1

46.0

42.0

Nov.

24.4

.......

"85." 6"

125.0

69.6

54.5

45.0

32.7

39.0 

111.0

69.6

Dec.

51.2

30.9

30.0

on n

79.8

124.0 

172.0

203.0

647.0

239.0

137.0

94 8

75.9 

60.0

55.6

54.5

Monthly discharge of North Fork of Wailua River near Lihue, Kauai, for 1912.

Month.

May -------- .....-.. ..-. ...

June ......... ..... ... ....

July...............................................

The period ..................................

Discharge in second-feet.

Maximum.

104 

130 

571 

606 

179 

99 

563 

164 

106 

117 

125 

809

809

Minimum.

43.0 

20.0 

33.6 

46.0 

30.0 

23.0 

23.0 

22.4 

18.2 

21.8 

24.4 

30.0

18.2

Mean.

61.5 

33.0 

107.0 

79.8 

47.3 

40.4 

88.4 

45.2 

33.3 

51.6 

49.1 

166.0

667.5

Run-off 

(total in 

acre-feet).

3,780 

1,900 

6,580 

4,750 

2,910 

2,400 

5,440 

2,780 

1,980 

3,170 

2,440 

10,200

48,300

Accuracy.

B. 

C. 

B. 

B. 

C. 

C. 

B. 

A. 

A. 

A. 

A. 

A.

o No record Nov. 17-21. Mean for November is mean of 25 days. 

6 Mean for the year is mean of 361 days.

UHAU IOLE STREAM AT 750-FOOT ELEVATION NEAR LIHUE, KAUAI.

Location. About 11 miles northwest of Lihue, 3 miles from boundary of forest

reserve, and 400 feet below falls.

Records available. From July 28, 1912, to December 31, 1912. 

Drainage area. 1.21 square miles.

Gage. A vertical staff gage; read once a week; datum unchanged. 

Channel. Practically permanent. 

Discharge measurements. Made by wading.

Discharge measurements of Uhau lole Stream at 750-foot elevation near Lihue, Kauai, in

Date.

May 5

July 28

Oct. 20

Do...

Hydrographer.

W.V. Hardy... ..........................................................

.....do....................................................................

.....do...................................................................

Gage 

height.

Feet. 

o5.20

4.73

5.15

4.96

Discharge.

Sec.-ft. 

3.83

5.91

17.3

11.2

a Gage height of no value, as water level was disturbed in cleanmg channel to make good measuring section.
74 WATER RESOURCES OP HAW AH, 1912.

Daily gage height, in feet, of Uhau lole Stream at 750-foot elevation near Lihue, Kauai,

for 1912.

[S. Takabayashi, observer.]

Day.

1.......

2.......

3.......

5.......

6.......

7.......

8.......

Q

10.......

11.......

12.......

13.......

14.......

15.......

Aug.

4.69

4.70

Sept.

4.65

4.70

4.63

Oct.

4.63

4.70

Nov.

4.70

4.71

4.70

Dec.

5.12

5.36

4 84

Day. '

16.......

17.......

18.......

19.......

20.......

21.......

22.......

23.......

24.......

25.......

26.......

27.......

28.......

29.......

30.......

31.......

Aug.

4.63

4.62

Sept.

4.65

-

4.61

Oct.

s. is

4.74

Nov.

4.68

4.71

Dec.

4.85

4.98

EAST BRANCH OF NORTH FORE OF WAILTJA RIVER NEAR LIHUE, KATJAI.

Location. About 8 miles northwest of Lihue, 600 feet above gaging station on the 

North Wailua, and 400 feet above the confluence of the north and east branches 

of North Wailua River.

Becords available. July 27, 1912, to December 31, 1912.

Gage. Inclined staff gage; read once a day, about 1 p. m.; datum unchanged.

Channel. Practically permanent.

Discharge measurements. Made by wading.

Discharge measurements of East Branch of North Fork of Wailua River at SOO-foot 

elevation near Lihue, Kauai, in 1912.

Date.

July 31

Oct. 21

Hydrographer.

W. V. Hardy. ... .........................................................

.....do..............".....................................................

Gage 

height.

Feet. 

6.35

6.70

Discharge.

Sec.-ft. 

28.0

60.4

Daily gage height, in feet, of East Branch of North Fork of Wailua River at SOO-foot 

elevation near Lihue, Kauai, for 1912.

[Mori and Takabayashi, observers.]

Day.

1.... ......

2..........

3.......... 

4..........

5..........

6.......... 

7. ......... 

8.......... 

9..........

10..........

11.......... 

12.......... 

13.......... 

14.......... 

15..........

July.

......

......

Aug.

6.32

6.30

6.28

6.27

6.40 

6.45 

6.40 

6.40 

6.32

6.30 

6.30 

6.30 "e.'io"

Sept.

6.40

6 50

6.45 

6.40

6.40

6.60 

6.45 

6.38 

6.40 

6.33

6.30 

6.30 "e."28"

6.26

Oct.

6 50

6.80

6.80 

6.32

6.30

6.27 

6.28 

6.45 

6.35 

6.32

6.90 

6.45 

6.37 

6.35 

6.32

Nov.

6.42

6.35

6.32

6.56

6.50 

6.45 

6.47 

6.65 

6.88

6.42 

6.32 

6.32 

6.30 

6.32

Dec.

6.70

"6."l5

6.13

6.90 

6.72 

6.71 

6.63 

6.62

"~6."59 

6.52 

6.50 

6.38

Day.

16..........

17..........

18.......... 

19..........

20..........

21.......... 

22.......... 

23.......... 

24.......... 

25..........

26.......... 

27.......... 

28.......... 

29.......... 

30.......... 

11

July.

......

'6~35"

6.35 

6.35 

6.44

Aug.

6.45

6.40

6.31 

6.35

6.32

6.30 

6.30 

6.30 

6.28 

6.32

6.40 

6.60 

6.40 

6.40 

6.50 

6.45

Sept.

6.25

6.25

6.25 

6.25

6.30

6.28 

6.29 

6.25 

6.23 

6.22

6.20 

6.20 

6.21 

6.23 

6.25

Oct.

6.30

6.40

6.35 

6.52

6.40

6.70 

6.50 

6.45 

6.42 

6.41

6.48 

6.42 

6.46 

6.48 

6.49 

6.48

Nov.

6.32

6.29

6.33

6.48

6.40

"e.'es"

6.76 

6.37

6.32 

6.30

"e.'eis"

Dec.

6.40

6.40

6.40 

6.38

6.62

6.15 

7.23 

6.72

6.64 

6.60 

6.58 

6.30 

6.45 

6.45
ISLAND OF KAUAI. 75

KEAHTTA STREAM AT 750-FOOT ELEVATION NEAR LIHTTE, K&TJAI.

Location. About 12 miles north of Lihue, 4 miles from edge of forest reserve, and at

confluence with stream from the east. 

Records available. July 29, 1912, to December 31, 1912. 

Gage. Vertical staff; read once a week. 

Channel. Permanent. 

Discharge measurements. Made by wading at about 20 feet below confluence of

streams and about 35 feet below gage.

Discharge measurements ofKeahua Stream at 750-foot elevation near Lihue, Kauai, i

Date.

May 5

July 29

Oct. 22

Hydrographer.

.....do....................................................................

Gage 

height.

Feet. 

5.20

«5.19

5.32

Discharge.

Sec.-feet. 

10.8

12.3

13.6

a New datum established since previous measurement of May 5. 

Daily gage height, in feet, of Keahua Stream at 750-foot elevation near Lihue, Kauai, for

[S. Takabayashi, observer.]

Day.

1.......

2.......

3.......

4.......

5.......

6.......

7.......

8.......

9.......

10.......

11.......

12.......

13.......

14.......

15.......

Aug.

5.11

5.12

Sept.

5.29

5.27

5.11

Oct.

5.11

5.13

Nov.

5.21

5.20

' 5.18

Dec.

5.52

5.50

5.10

Day.

16.......

17.......

18.......

19.......

20.......

21.......

22.......

23.......

24.......

25.......

26.......

27.......

28.......

29.......

30.......

31.......

Aug.

5.12

5.23

Sept.

5.14

5.09

Oct.

5.32

5.13

Nov.

5.11

5.13

Dec.

5.41

5.12

KAWI STREAM AT 750-FOOT ELEVATION NEAR LIHUE, KATJAI.

Location. About 8 miles north of Lihue, 3 miles from boundary of forest reserve,

and 600 feet above confluence of stream from the east. 

Records available. July 30 to December 31, 1912. 

Drainage area. 0.71 square miles.

Gage. Vertical staff gage; read once a week; datum unchanged. 

Channel. Permanent. 

Discharge measurements. Made by wading.

Discharge measurements of Kawi Stream at 750-foot elevation near Lihue, Kauai, i

Date.

July 30

Oct. 22

Nov. 12

Hydrographer.

.....do....................................................................

Gage 

height.

Feet. 

5.00

ol.92

1.92

1.80

Discharge.

Sec.-feet. 

2.01

1.80

2.10

1.48

o New datum established since previous measurement.
76 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Kawi Stream at 750-foot elevation near Lihue, Kauai, for 191%.

[S. Takabayashi, observer.]

-> Day.

1.......

2.......

3.......

4.......

5.......

6.......

7.......

8.......

9.......

10.......

11.......

12.......

13.......

14.......

15.......

Aug.

1.88

1.89

Sept.

1.89

1.88

1.-72

Oct.

1.80

1.90

Nov.

1.79

1.84

1.80

Dec.

2.03

1 QQ

1.81

Day.

16.......

17.......

18.......

19.......

20.......

21.......

22.......

23.......

24.......

25.......

26.......

27.......

28.......

29.......

30.......

31.......

Aug.

1.88

1.98

Sept.

1.92

1.82

Oct.

1.92

1.90

Nov.

1.82

1.83

Dec.

2.02

1.81

KANAKA DITCH AT INTAKE, NEAR LIHTTE, KATTAI.

Location. About 9 miles northwest of Lihue and about 500 feet above the point 

where the Kauai Electric Co.'s power line crosses the ditch and the North Fork 

of Wailua River.

Records available. August 6, 1910, to December 31, 1912.

Gage. Vertical staff; read once each day, at 8 a. m.; datum unchanged.

Discharge measurements. Made in flume 100 feet above gage.

Discharge measurements of Kanaka ditch at intake, near Lihue, Kauai, in 1912.

Date.

Mar. 11

July 29

31

Oct.

Hydrographer.

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet. 

3.02

2.84

2.78

3.14

Discharge.

Sec.-ft. 

33.4

29.0

27.7

32.4

Daily gage height, in feet, of Kanaka ditch at intake, near Lihue, Kauai, for 1912.

[Mori, observer.]

Day.

1...... .........

2...............

0

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12............... 1<l

14...............

15...............

Jan.

2.50

2.50

Feb.

2.30

2.25

2.25

2.25

2.25

2.20

2.20

2.20

2.60

2.50

2.50

2.50

2.50

2.40

2.40

Mar.

2.60

2.60

2.80

2.70

2.60

2.60

2.75

2.70

2.80

2.80

3.00

3.00

3.00

2.90

2.80

Apr.

2.60

2.50

2.60

2.80

2.70

2.90

2.90

2.90

2.80

2.70

2.70

2.60

2.60

2.60

May.

2.75

2 7ft

3.10

2.90

9 Rfi

2.70

2.90

2.80

2.71)

2.65

2.60

2.60

2.80

2.80

June.

2.75

2.70

2.70

2.70

2.70

2.80

2.80

2.80

2.80

2.75

2.75

2.75

2.80

2.80

2.80

July.

2.80

2.75

2.80

2.75

2.75

2.80

3.00

3-10

2.80

3.10

3.10

3.10

3.10

3.20

3.00

Aug.

2.70

2.90

2.90

2.90

2.90

3.50

3.00

3.10

3.10

3.10

3.10

3.10

3.10

3.20

3.00

Sept.

3.20

3.20

3-10

3.10

3.10

3.20

3.10

3.10

3.10

3.10

3.10

2.90

2.90

3.00

Oct.

3.00

2.90

3.00

3.00

3.15

3.05

3.05

3.10

3.05

3.05

3.10

3.10

3.05

3.00

3.00

Nov.

2.90

3.00

3.00

3.00

3-20

3.20

3.10

3.10

3.20

3.15

3.05

2.95

2.90

2.90

3.10

Dec.

3.05

3.2

3.1

1.6

1.6

1.6

1.5

1.6

1.60

2.40

2.40

2.40

2.40

2.30

2.30
ISLAND OP KAUAI. 77 

Daily gage height, infeet, ofKanaha ditch at intake, near IMue, Kauai, for 1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24. ..............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

"i'so"

2.40

2.40

2.40

2.30

2.30

2.30

2.20

2.20

2.20

Feb.

2.40

2.50

2.50

2.50

2.50

2.40 

2.60

2.60

2.60

2.80

2.80

2.80

2.60

2.60

-------

Mar.

2.70

2.70

2.65

2.60

2.60

2.80 

2.75

2.80

2.40

2.50

2.50

2.50

2.40

2.40

2.60

2 "50

Apr.

2.70

3.00

2.40

2.30

2.30

2.00 

2.00

2.00

2.60

2.80

2.50

2.70

2.70

2.80

2.80

May.

2.80

2.80

2.80

2.75

2.75

2.80 

2.80

2.80

2.85

2.85

2.85

2.85

3.00

3.00

2.90

2.80

June.

2.80

2.80

2.70

2.70

2.70

2.80 

2.90

2.90

2.80

2.70

2.70

2.90

. 2.80

2.70

2.70

July.

2.80

3.10

3.50

3.00

3.00

3.00 

2.80

2.80

3.00

2.90

3.00

3.00

3.00

3.50

3 1ft

2.80

Aug.

3.10

3.50

3.00

3.00

3.00

3.00 

3.50

3.50

3.50

3.20

3.10

3.10

3.10

3.10

3.20

3.20

Sept.

3.05

2.90

2.80

2.80

3.00

3.00 

3.05

3.00

2.90

2.75

2.75

2.75

2.70

3.00

3.05

Oct.

2.90

3.15

3.10

3.15

3.15

3.14 

3.15

3.15

3.10

3.10

3.20

3.15

3.15

3.10

3.00

3.05

Nov.

2.85

2.83

3.05

3.10

3.15

"3."26"

1.60

1.60

1.65

3.10

2 on

Dec.

2.30

2.70

2.70

2.90

3.00

2.80 

2.90

2.85

2.90

2.80

2.70

2.70

2.50

2.40

2.40

KONOHIKI STREAM BASIN. 

KONOHIKI STREAM AT MAKAKTTALELE MATTKA WEIR, NEAR KAPAA, KATTAI.

Location. About 3 miles west of Kapaa. 

Records available. April 1,1911, to December 31,1912. 

Gage. Vertical staff; read once each day; datum unchanged. 

Discharge measurements. Made with 3-foot sharp-crested weir. 

Cooperation. Station maintained by the Makee Sugar Co.

Daily discharge, in second-feet, of Konohiki Stream at Makakualele mauka weir, near

Kapaa, Kauai, for 1912.

Day.

1......... ......

3...............

4...............

5...............

6...............

7...............

8...............

9............... 10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.17

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.17

1.10

1.10

1.10

1.10

1.10

1.10

1.10

1.10

1.03

1.03

1.03

1.03

Qfi

Qfi

.96

89

.89

OQ

OQ

.89

.89

OQ

Feb.

0.89

89

SO

.89

.83

!M

.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

.89

.89

.96

.89

89

.83

.83

.83

Mar.

0.96

89

Qfi

.83

.83

.89

00

.83

1 Sfi

1 7">

1.48

1.17

.96

.89

SQ

.89

.89

SQ

SQ

.89

QQ

.89

.89

1.03

.89

89

89

89

.89

.89

Apr.

0.89

.89

.89

OQ

.83

00

.89

.83

.83

.83

.83

.83

.83

.83

.76

3.53

2.82

1 81

1 Sfi

1.48

1 9S

1.17

1.17

1.17'

1.10

1.10

1.10

1.10

1.10

May.

1.03

1.03

1.03

1.03

1.03

1.03

96

1.10

Qfi

.96

1.03

Qfi

.89

.89

Qfi

OQ

on

QQ

1.03

1.03

OQ

SQ

June.

0.89

.89

QQ

.89

89

SO

.89

89

SQ

QQ

.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

00

.83

.76

.76

.76

.76

1 9H

SQ

.83

July.

0.83

00

.83

.83

.83

00

QQ

Q*>

.83

.83

1 *)f,

96

.83

2.72

1.32

1.17

1.10

.96

SQ

.83

.83

00

.83

.83

00

Q*>

00

oq

.83

.83

00

Aug.

0.83

oq

.83

.83

.83

00

Q*>

Q*>

.83

.83

cq

.83

.83

.89

.89

.83

.83

.83

00

.83

.83

00

.83

.83

Q*>

Q*>

Q*>

00

.76.

.76

.76

Sept.

0.76

.76

.76

.70

.70

.76

.76

.70

.70

.70

.70

.70

.70

.70

.70

64

.64

.64

.64

.64

.64

64

64

.64

64

64

64

64

64

.58

Oct.

0.58

CO

v&

v&

.58

CLR

CO

.58

v&

v&

K.S

CO

.58

.58

.58

.58

>az

.58

64

.83

.76

.70

64

.58

CO

CO

CO

CO

v&

.58

EQ

Nov.

0.58

to

v&

v&

v&

?&

v&

CO

CO

fid.

CO

v&

v&

.52

.52

EO

.52

.52

CO

CO

.52

CO

CO

**>

EO

EO

EO

CO

EO

.52

Dec.

0.52

1 C.1

2

r\7

1 OS

i 4fi

1.17

96

1.17

Qfi

SO

.83

.83

.76

.76

.76

.76

.70

.70

.70

.76

.76

.76

.70

.70

.70

.70

.70

.64

.64

64

NOTE. Discharge computed from Francis's formula: Q=3.33 LHT when L=3 feet.
78 WATEB EESOUECES OF HAW AH, 1912.

Monthly discharge of Konohiki Stream at Makakualele mauka weir, near Kapaa, Kauai,

for 1912.

Month. /

January. .................................................

February ................................................

March.

May.....................................................

June .....................................................

July.....................................................

November ...............................................

The year. ..........................................

Discharge in second-feet.

Maximum.

1.17 

.96 

1.72 

3.53 

1.10 

1.25 

2.72 

.89 

.76 

.83 

.64 

2.07

3.53

Minimum.

0.89 

.83 

.83 

.76 

.89 

.76 

.83 

.76 

.58 

.58 

.52 

.52

.52

Mean.

1.02 

.85 

.97 

1.17 

.97 

.86 

.95 

.83 

.68 

.60 

.55 

.92

.86

Run-off 

(total in 

acre-feet).

62.7 

48.9 

59.6 

69.6 

59.6 

51.2 

58.4 

51.0 

40.5 

36.9 

32.7 

56.6

628

KONOHIKI STREAM AT MAKAKUALELE MAKAI WEIR, NEAR KAPAA, KAUAI.

Location. About 2J miles west of Kapaa. 

Records available. January 1, 1912, to December 31, 1912. 

Gage. Vertical staff; read once each day; datum unchanged. 

Discharge measurements. Made with 3-foot sharp-crested weir. 

Cooperation. Station maintained by the Makee Sugar Co.

Daily dii in second-feet, of Konohiki Stream at Makakualele makai weir, near 

Kapaa, Kauai, for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

 8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26

27...............

28...............

29...............

30...............

31...............

Jan.

7.15

9.10

7.83

9.10

8.53

6.75

6.75

6.88

3.53

3.32

7.42

8.25

9.99

9.99

7.83

7.69

6.62

4.64

4.07

3.64

3.75

7.15

7.42

3.02

3.64

4.76

4.64

3.64

4.76

3.53

3.64

Feb.

2.62

3.75

5.36

3.75

5.36

4.64

2.72

2.53

3.22

1.98

2.25

3.12

3.53

2.72

3.32

3.53

2.72

1 SO

3.02

2.43

3.12

3.53

2.53

3.53

3.53

3 CO

3.64

2.92

3.02

......

Mar.

4 64

4.64

3.02

3.02

4.89

4.64

5.24

5.24

6.49

1.81

2.07

i (54

2.07

5.24

5.24

5.24

6.10

5.85

4.07

4.07

4 64

4 on

5.48

5.24

5.24

5.24

5.24

Apr.

5.24

3.53

3.75

4.07

3.53

3.53

3.53

3 CO

3 CO

3.53

3 CO

3.53

3.53

3.53

3.53

7

09

3.53

3.53

3.53

3.53

3 CO

3.75

3 CO

4.07

3.53

3 CO

3.53

May.

2.53

2.07

1.64

1.10

.89

.89

.58

.58

.58

.32

.32

.32

9.9

.58

.58

.58

.58

co

.58

.58

.58

.58

.32

.32

.58

.32

.32

.58

.58

.58

June.

0.32

.32

.32

.32

.32

.32

.32

.32

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.32

.58

.58

.58*

.58

.58

.58

.70

.58

.58

.58

.58

July.

0.58

.32

.32

.32

.32

.32

.32

.32

.58

.58

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.58

.58

.58

Aug.

0.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.89

.89

.58

.58

.32

.58

.58

.58

.58

.58

.89

.58

.58

.58

.58

.58

.58

.58

.58

Sept.

0.58

.58

.58

.58

.89

.89

.89

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

Oct.

0.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

' .58

.58

.58

.58

.58

.58

.58

.58

.70

1.03

1.03

1.03

1.03

.58

.70

.58

.58

.58

.58

.32

.89

Nov.

0.58

.58

.58

.32

.32

.58

.58

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.32

.23

.19

.11

.58

.58

.32

.32

.32

.58

.58

Dec.

1.25

1.25

7.83

8.53

3.02

1.64

1.25

1.25

1.25

1.25

1.25

1.25

1.25

1.25

.89

.89

.58

.58

.58

.32

.32

.32

;32

.58

.58

.58

.32

.32

.32

.32

.32

NOTE. Discharge computed from Francis's formula: Q=3.33 LH* when L=3 feet.
ISLAND OF KAUAI. 79

Monthly discharge of Konohiki Stream at Makakualele, makai weir, near Kapaa, Kduai,

for 1912.

Month.

May.....................................................

July.....................................................

Discharge in second-feet.

Maximum.

9.99 

5.36 

6.49 

7.83 

2.53 

.70 

.58 

.89 

.89 

1.03 

.58 

8.53

9.99

Minimum.

3.02 

1.89 

1.64 

3.53 

.32 

.32 

'.32 

.32 

.58 

.32 

.11 

.32

.11

Mean.

6.10 

3.24 

4.53 

4.04 

.69 

.53 

.37 

.60 

.61 

.65 

.38 

1.34

1.92

Run-off 

(total in 

acre-feet).

375 

186 

278 

240 

42.4 

31.5 

22.8 

36.9 

36.3 

40.0 

22.6 

82.4

1,390

NOTE. Maximum and mrnimrun discharge are mean for the day.

KAEHULtTA STREAM BASIN. 

NORTH FORK OF KAEHULTTA STREAM AT KAINAHOLA WEIR, NEAR KAPAA, KAUAI.

Location. About 2 miles northwest of Kapaa. 

Records available. April 1,1911, to December 31,1912. 

Gage. Vertical staff; read once each day; datum unchanged. 

Discharge measurements. Made with a 3-foot sharp-crested weir. 

Cooperation. Station maintained by the Makee Sugar Co.

Daily discharge, in second-feet, of North Fork of Kaehulua Stream at Kainahola weir, near

Kapaa, Kauai,for 1912.

Day.

1..... ..........

2...............

4...............

5...............

6...............

7...............

8...............

9............... 10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

-24...............

25...............

26...............

27...............

28... ............ 

29...............

30...............

31...............

Jan.

0.83

.83

.83

.83

.83

.83

.83

.83

.83

.83

V76

?76

.76

.76

.76

.76

.76

.76

.76

.70

.70

.70

.70

.70

.70

.70

.70

.70 

.70

.70

.70

Feb.

0.70

.64

64

fid

64

.64

64

64

.64

64

.64

64

.64

.64

64

64

.64

64

.64

.64

.64

.64

.64

64

.64

fid

64

.64 

.64

.......

Mar.

0.64

.64

64

64

.64

.64

64

.64

.70

.83

.96

SO

.89

.89

.83

.83

.76

.76

.76

.76

.76

.76

.76

.76

.76

.76

.76

.76 

.76

.76

.76

Apr.

0.76

.76

64

.64

64

.64

64

64

.64

64

.64

fid

.64

.64

.64

64

3.02

1 79

.83

.76

.76

.76

.70

.70

.70

.70

64

.64 

.64

fid

May.

0 64

.64

64

fid

.64

.64

fid

.64

.64

64

.64

64

.64

64

64

.64

.64

64

.64

64

.64

.64

.64

.64

fid

64

64

.76 

.70

.70

.70

June.

0.70fid

fid

.70

.70

.64

64

fid

.64

.64

.64

64fid

fid

64

64

.64

.64

64

fid

.64

64

.64fid

64

.58

.58

.64 

fid

64

.......

July.

O CA

.64

64

64

64

.64

64

fid

.64

64

2.62

.83

.76

1.72

QO

.70

.70

.70

64

fid

64

64fid

.64

64

64

64

.64 

.64

64

.64

Aug.

0 64

64

64

64

64

.64

64

64

.64

64

.64

64

1.17

1.17

64

64

64

64

64

64

.64

64

64

64

64

64

64

..64 

.64

.58

.58

Sept.

0.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.52

.52

.52

.52

.52

.52

.52

.52

CO

.52

.52

CO

.52 

.52

CO

Oct.

0.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.52

.58

.58

.58

.58

.58

.58

.58

.58

.58 

.58

.58

.58

Nov.

0.58

.58

CO

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

CO

.52

.52

.52

.52

.52

.52

.47

.47

CO

.47 

.47

.47

Dec.

0.47

1.10

2 Sd

96

QO

.70

.70

.70

64

.70

.70

64

64

64

64

64

64

Rd

64

64

.70

Q9

.70

64

64

64

64

.64 

.64

64

.64

NOTE. Discharge computed from Francis's formula: Q=>3.33 LH when L=3 feet.
80 WATER RESOURCES OF HAW AH, 1912.

Monthly discharge of North Fork of Kaehulua Stream at Kainahola weir, near Kapaa,

Kauai, for 1912.

Month.

May.....................................................

July.....................................................

Discharge in second-feet.

Maximum.

0.83 

.70 

.96 

8.02 

.76 

.70 

2.62 

1.17 

.58 

.58 

.58 

2.34

3.02

Minimum.

0.70 

.64 

.64 

.64 

.64 

.5S 

.64 

.58 

.52 

.52 

.47 

.47

.47

Mean.

0.76 

.64 

.75 

.79 

.65 

.64 

.76 

.67 

.55 

.54 

.55 

.74

.67

Kun-off 

(total in 

acre-feet).

46.7 

36.8 

46.1 

47.0 

40.0 

38.1 

, 46.7 

41.2 

32.7 

33.2 

32.7 

45.5

487

KAEHTJLTTA STREAIC AT KTTHINOA WEIR, NEAR KAPAA, KATTAI.

Location. About 1J miles northwest of Kapaa. 

Records available. May 1, 1911, to December 31, 1912. 

Gage. Vertical staff; read once each day; datum unchanged. 

Discharge measurements. Made with 6.5-foot sharp-crested weir. 

Cooperation. Station is maintained by Makee Sugar Co.

Daily discharge, in second-feet, of Kaehulua Stream at-Kuhinoa Weir, near Kapaa, Kauai,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

K

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.52

2.08

1.65

2.23

1.26

1.26

1.39

1.65

1.26

1.39

2.23

1.65

1.39

1.13

1.79

1.39

1.52

1.26

1.13

1.79

1.52

1.65

2.39

3.21

2.55

1.52

1.65

1.52

2.23

1.93

1.93

Feb.

1.26

1.13

1.39

1.79

1.26

2.39

2.87

1.01

1.52

1.39

1.52

2.23

3.04

1.39

1.39

2.23

1.39

1.65

1.26

1.01

1.13

1.39

2.23

1.52

1.79

1.39

1.52

1.39

1.39

.......

Mar.

1 65

1.39

1.26

1.26

1.26

1.52

6.98

2.55

2.71

14.10

17.00

11.30

22.30

20.70

9.32

7.65

2.71

2.71

2.71

2.71

2.71

3.56

1.93

1.93

1.93

1.93

1 93

1.93

1.93

1.26

10.60

Apr.

10.60

4.48

2.71

2.71

2.71

1.93

1.93

1.93

6.53

2.71

2.71

2.71

2.71

2.71

2.71

2.71

35.90

25.70

5.90

2.71

2.71

2.71

2.71

2.71

2.71

.68

.68

.68

.68

.68

May.

0.68

.68

.68

.90

.68

.68

.90

1.26

1.26

1.26

.68

1.26

1.26

1.93

1.93

2.23

1.93

1.93

1.93

1.93

1.93

1.26

1.93

1.26

1.26

1.93

1.93

.90

11.30

1.93

1.93

June.

0.68

1.26

1.26

1.26

.68

1.26

1.26

1.26

1.26

1.26

1.26

1.26

1.26

1.93

1.26

.68

.68

1.26

1.26

1.26

1.26

1.93

2.71

2.71

2.71

3.04

2.71

2.71

2.71

1.93

July.

3.56

1.93

2.71

2.71

2.71

3.56

2.71

2.71

3.56

3.56

2.71

1.93

2.71

2.71

1.93

2.23

1.93

1.93

1.26

1.93

1.26

1.26

2.23

2.71

1.26

1.26

2.23

2.23

1.93

1.93

1.26

Aug.

0.68

1.26

.68

1.93

1.93

1.93

1.26

1.93

1.26

1.93

1.93

1.26

2.71

2.71

1.93

1.26

1.26

1.93

1.93

1.93

1.93

1.26

2.71

1.93

1.93

1.93

1.93

1.93

2.23

1.93

1.93

Sept.

2.71

1.93

1.93

2.23

1.93

2.23

1.26

1.93

1.93

1.93

1.93

2.71

1.93

1.93

1.93

1.93

1.93

1.93

1.93

1.26

1.26

1.26

1.26

1.26

1.26

1.26

1.26

2.71

1.26

1.26

Oct.

0.24

.24

.17

.17

.24

.24

.24

.24

.24

.24

.49

.32

.68

.68

.68

.68

.68

1.26

1.26

1.52

1.52

1.52

1.52

.68

1.26

1.26

1.26

1.26

1.26

.58

.68

Nov.

0.24

.24

.24

.24

.24

.24

.24

.17

1.26

.24

.24

.24

.68

.68

on

.68

.24

.24

.17

.68

.68

.68

.68

.24

.24

.06

.06

.17

.06

.06

Dec.

0.68

.68

8.83

18.50

.17

.06

.68

.06

.06

.40

.40

.24

.68

.24

.17

.17

.32

.24

.24

.17

.68

.68

.68

.68

.06

.06

.06

.17

.24

.24

.17

NOTE. Discharge computed from Francis's formula: Q=3.33 LH* when L=6.5 feet.
ISLAND OF KATTAI. 81 

Monthly discharge of Kaehulua Stream at Kuhinoa weir, near Kapaa, Kauai,for 1912.

Month.

February ................................................

April. ...................................................

May... ..................................................

July.....................................................

The year. ..........................................

Discharge in second-feet.

Maximum.

3.21 

3.04 

22.30 

35.90 

11.30 

3.04 

3.56 

2.71 

2.71 

1.52 

1.26 

18.50

35.90

MitilmtiTn ,

1.13 

1.01 

1.26 

.68 

.68 

.68 

1.26 

.68 

1.26 

.17 

.06 

.06

.06

Mean.

1.71 

1.62 

5.34 

4.72 

1.73 

1.60 

2.27 

1.78 

1.78 

.75 

.37 

1.18

2.07

Run-oft 

(total in 

acre-feet).

105.0 

93.2 

328.0 

281.0 

106.0 

95.2 

140.0 

109.0 

106.0 

46.1 

22.0 

72.6

1,500

NOTE. Maximum and minimum discharge are mean for the day. 

SOUTH FORE OF KAEHULUA STREAM AT WAINAMUAMU WEIR, NEAR KAPAA, KAUAL

Location. About 2J miles northwest of Kapaa. 

Records available. April 1, 1911, to December 31, 1912. 

Gage. Vertical staff; read once each day; datum unchanged. 

Discharge measurements. Made with a 3-foot sharp-crested weir. 

Cooperation. Station maintained by the Makee Sugar Co.

Daily discharge, in second-feet, of South Fork of Kaehulua Stream at Wainamuamu weir, 

, near Kapaa, Kauai, for 1912.

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9............... 10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.58

.52

.58

.52

.52

.52

.52

.52

.52

.58

.52

.52

.52

.52

.52

.52

.52

.52

.47

.47

.47

.47

.47

- .47

.47

47

.47

.47

.47

.42

.42

Feb.

0.42

.42

.42

.42

.42

.42

.42

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.42

.42

.36

.36

.36

.36

.36

Mar.

0.42

.36

.42

.36

.36

.42

.36

.36

.58

.58

.58

.47

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.42

.42

.83

.76

.76

Apr.

0.52

.52

.52

.52

.47

.17

.64

.58

.58

.58

.58

.58

.58

.58

.58

.58

3.53

3.53

3.22

2.92

2.72

5.00

5.00

5.00

5.00

5.00

5.00

4.64

3.02

.76

May.

0.70

.70

.70

.64

.64

.64

.58

.58

.58

.52

.47

.52

.52

.52

.52

.47

.47

.47

.47

.47

.47

.47

.47

.52

.47

.47

.47

.52

.70

.64

.47

June.

0.52

.52

.52

.52

.52

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.64

.52

.47

July.

0.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

1.25

.70

.47

.58

.70

.52

.52

.52

.52

.47

.47

.47

.47

.47

.47

.47

.42

.42

.42

.42

.42

Aug.

0.42

.42

.42

.42

.47

.47

.47

.42

.42

.42

_ .42

.42

.42

.52

.52

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

Sept.

0.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

Oct.

0.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.64

.64

.64

.47

.42

.42

.42

.42

.42

.42

.42

.42

Nov.

0.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.42

.30

.36

Dec.

0.30

.47

.52

1.40

.64

1.10

1.10

1.10

.58

.58

.58

.52

.52

.47

.47

.47

.47

.47

.47

.47

.52

.62

.52

.52

.47

.47

.47

.47

.47

.47

.47

NOTE. Discharge computed from Francis's formula: Q=3.33 LH* when L=3 feet. 

14694° WSP 336 14 6
82 WATEE BESOUECES OF HAWAII, 1912.

Monthly discharge of South Fork ofKaehulua Stream at Wainamuamu weir, near Kapaa,

Kauai, for 1912.

Month.

AprU.... ................................................

July.....................................................

Discharge in second-feet.

Maximum.

0.58 

.42 

.83 

5.00 

.70 

.64 

1.25 

.52 

.42 

.64 

.42 

1.40

5.00

Minimum.

0.42 

.36 

.36 

.47 

.47 

.47 

.42 

.42 

.42 

.42 

.36 

.36

.36

Mean.

0.50 

.38 

.44 

2.11 

.54 

.49 

.51 

.43 

.42 

.44 

.42 

.58

.60

Run-off 

(total in 

acre-feet).

SO. 7 

21.9 

27.1 

126.0 

33.2 

29.2 

31.4 

26.4 

25.0 

27.1 

25.0 

35.7

439

KAPAA EIVER BASIN. 

KAPAA RIVER AT KAPAHI, NEAR KAPAA, KATTAI.

Location. About one-half mile above the intake of the Kapaa ditch, 5 miles northwest of Kapaa, and 4 miles west of Kealia.

Records available. July 23, 1910, to December 31,1912.

Gage. Vertical staff gage spiked to left bank of stream; read twice daily, about 7 

a. m. and 2 p. m.; datum unchanged.

Channel. Fairly permanent.

Discharge measurements. Made from a wire suspension bridge.

Accuracy. Records good.

Cooperation. Station maintained in cooperation with the Makee Sugar Co.

The following discharge measurement was made by W. V. Hardy: 

February 16, 1912: Gage height, 1.42 feet; discharge, 11.8 second-feet.

Daily gage height, in feet, of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912.

[S. Okimoto, observer.]

Day.

1..... ..........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

1.61

1.62

1.63

1.58

1.76

1.60

1.61

1.82

1.88

1.78

1.59

1.55

1.79

2.09

1.66

1.60

1.55

1.53

1.50

1.50

Feb.

1.46

1.46

1.46

1.45

1.44

1.44

1.44

1.48

1.45

1.45

1.44

1.44

1.44

1 44

1.43

1.43

Mar.

2.06

1.58

2.12

1.66

i <;a

1.58

1.70

1.56

2.58

2.80

2 fi9

2 1 1

2 09

o flfi

1 85

1.68

1.54

1.68

1.66

1.79

Apr.

1.63

1.56

1.74

1 80

1.86

2.45

1.86

2.14

1.74

1.70

1.68

1.70 i fit;

1 64

1.65

6 99

2

OQ

1.76

3.86

May.

1 48

1.46

1 48

1.62

1

PO

1.51

1.48

I

CO

1.48

1 46

1 45

1.46

1.50

1 95

1.85

1 U

1.56

1

JD

1.45

3.45

June.

i xrt

1.48

1.47

1 84

1.56

1.48

1.46

1 fi9

1 552

1 5ft

1 46

1 45

1.70 i ^n

1 £kTt

1 54

1 50

1.59

3.49

July.

1.44

1 44

1 43

1 43

1.48

1 11

1.81

1 53

1.54

2.82

1 79

1.86

3 Q9

2 91

I

oc

2.24

1.74 1 54

3.5(5

Aug.

1.45

1 11

1 48

1 SO

1 79

1.65

1 60

1.74

1 54

1 £7

1 49

1 t\R

1 7Q

1 60

i w

1.50

1.48

Sept.

1

KO

1.63

1 54

1 <ul

1.50

2 AC

1.57

1 49

1.48

1.46

1 n

1.45

I

Jrt

1 40

1 J.S

1 5Q

1 44

1.51

1.48

Oct.

1 79

1.47

1 S9

1.48

1 %f\

1.50

1 S7

1 7S

1 l^fi

1.75

1.57

1 £52

1.50

1 C9

1,59

2.f)fi

Nov.

1 49

1

J7

1.46

1.50

1.48

1.77

1 7?

1 52

1 K9

1.47

1 44

1 64

1.50 1 11

1 57

1 59

1.SB

Dec.

1 SA

2

KO

3 ?ft

3.75

1.75

1 69

1.66

1 529

1.95

1 69

I

CO

1 59

1 Kf\

i ^n

I

CO

1 AQ

1.48 1 56

1.fi9.
ISLAND OF KAUAI. 83

Daily gage height, in feet, of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912-

Continued.

Day.

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.49

1 48

1.48

1.48

1.48

1.47

1.47

1.49

1.48

1.47

1.46

Feb.

1.44

1.74

2.00

1.66

1.58

1.58

i >yi

1.51

1.49

Mar.

1.66

1.68

1.64

1.66

2.80

1 84

~1 64

1.70

1.66

1.60

1.72

Apr.

1.74

1.68

1.61

1.56

1 58

1.66

1.56

1.55

1.51

1.48

May.

1.46

1.58

1.70

1.82

1.56

1.30

1 98

9 on

2.24

1.63

1.52

June.

1.55

1 48

1.45

1.45

1.45

1 44

1.57

1.52

1.48

1.44

July.

1.57

1.56

1.59

2.16

1.56

1.74

1.54

1.53

1.54

1.52

1.48

Aug.

1.51

1 60

1.52

1.47

1.48

1.59

1 94

1.57

1.52

1.88

1.66

Sept.

1.50

1 48

1.45

1.43

1.42

1.41

1.41

1.44

1.54

1.57

Oct.

1.91

1.60

1.62

1.55

1 W

2.18

1.66

1.56

1.54

1.66

1.50

Nov.

1.79

2.20

1 80

1.53

1 45

1 48

1.45

1 44

1.90

1.70

Dec.

2.32

1.68

2.38

1.82

1.82

1.58

1.54

1.50

1.48

1.49

Daily discharge, in second-feet, of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

18.4

18.8

19.2

17.2

25.0

18.0

18.4

28.0

31.0

26.0

17.6

16.0

26.5

44.3

20.4

18.0

16.0

15.2

14.0

14.0

13.7

13.4

13.4

13.4

13.4

- 13.1

13.1

13.7

13.4

13.1

12.8

Feb.

12.8

12.8

12.8

12.5

12.2

12.2

12.2

12.2

13.4

12.5

12.5

12.2

12.2

12.2

12.2

12.2

12.2

12.2

11.9

11.9

12.2

24.0

38.0

20.4

17.2

17.2

17.2

14.4

13.7

.......

Mar.

42.2

17.2

46.4

20.4

17.2

17.2

22.0

16.4

86.0

109.0

90.0

45.7

123.0

38.0

29.5

21.2

16.0

21.2

20.4

26.5

20.4

21.2

19.6

20.4

109.0

29.0

19.6

22.0

20.4

18.0

23.0

Apr.

19.2

14.8

16.4

24.0

30.0

73.5

30.0

47.8

24.0

22.0

21.2

22.0

29.5

19.6

20.0

619.0

67.2

 25.0

30.0

24.0

21.2

18.4

16.4

17.2

20.4

16.4

16.0

14.4

13.4

May.

13.4

12.8

13.4

18.8

14.8

14.4

13.4

17.2

13.4

12.8

12.5

12.8

14.0

35.0

29.5

15.6

16.4

13.4

12.5

12.5

12.8

17.2

22.0

28.0

16.4

14.0

36.8

121.0

55.2

19.2

14.8

June.

14.0

13.4

13.1

29.0

16.4

13.4

12.8

18.8

17.2

14.0

12.8

12.5

22.0

14.0

14.0

15.6

13.4

14.0

17.6

13.7

16.0

13.4

12.5

12.5

12.5

12.2

16.8

14.8

13.4

12.2

July.

12.2

12.2

11.9

11.9

13.4

15.2

27.5

15.2

15.6

111.0

93.0

26.5

30.0

261.0

52.8

29.5

55.2

24.0

15.6

16.4

16.8

16.4

17.6

49.2

16.4

24.0

15.6

15.2

15.6

14.8

13.4

Aug.

12.8

12.5

12.2

13.4

31.5

23.0

20.0

18.0

24.0

15.6

16.8

13.7

16.4

84.0

26.0

18.0

20.4

15.2

14.0

13.4

14.4

18.0

14.8

13.1

13.4

17.6

34.4

16.8

14.8

31.0

20.4

Sept.

17.2

19.2

15.6

15.6

14.0

41.5

16.8

14.8

13.7

13.4

12.8

12.5

12.5

11.6

11.0

13.4

17.2

12.2

14.4

13.4

14.0

13.4

12.5

11.9

11.6

11.3

11.3

12.2

15.6

16.8

Oct.

23.0

13.1

28.0

13.4

14.0

14.0

16.8

26.0

17.2

16.4

24.5

16.4

16.8

17.2

14.0

16.4

14.8

17.6

30.0

42.2

32.6

18.0

'18.8

16.0

16.8

50.6

20.4

16.4

15.6

20.4

14.0

Nov.

13.7

13.1

12.8

12.8

25.0

14.0

13.4

25.5

23.5

14.8

14.8

13.1

12.2

12.2

19.6

14.0

12.2

16.8

14.8

16.4

26.5

52.0

27.0

15.2

12.5

13.4

12.5

12.2

32.0

22.0

Dec.

30.0

80.0

171.0

236.0

24.5

21.6

20.4

28.0

35.0

21.6

17.2

14.8

14.0

14.0

13.4

14/8

13.7

13.4

16.4

18.8

61.8

26.0

21.2

67.2

28.0

28.0

17.2

15.6

14.0

13.4

13.7

Monthly discharge of Kapaa River at Kapahi, near Kapaa, Kauai, for 1912.

Month.

April..............................................

May...............................................

July...............................................

October...........................................

Discharge in second-feet.

Maximum.

44.3 

38.0 

123.0 

619.0 

121.0 

29.0 

261.0 

84.0 

41.5 

50.6 

52.0 

236.0

619.0

Minimum.

12.8 

11.9 

16.0 

13.4 

12.5 

12.2 

11.9 

12.2 

11.0 

13.1 

12.2 

13.4

11.0

Mean.

18.3 

14.5 

37.0 

45.3 

21.8 

14.9 

34.4 

20.3 

14.8 

20.4 

18.0 

36.3

24.7

Run-off 

(total in 

acre-feet).

1,130 

834 

2,280 

2,700 

1,340 

887 

2,120 

1,250 

881 

1,250 

1,070 

2,230

18,000

Accuracy.

A. 

A. 

A. 

B. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.
84 WATER RESOURCES OF HAWAII, 1912.

AKULIKULI SPRING AT WEIR NEAR EAPAA, KAUAI.

Location. About 5 miles west of Kealia. 

Records available. April 1, 1911, to December 31, 1912. 

Gage. Vertical staff; read once each day; datum unchanged. 

Discharge measureip.en.ts. Made with a 3-foot sharp-crested weir. 

Cooperation. Station maintained by the Makee Sugar Co.

Daily discharge, in second-feet, of Akulikuli Spring at weir near Kapaa, Kauai,for 191%.

Day.

1..... ..........

2...............

3...............

4.... ...........

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.07

2.07

1.98

1.89

1.89

1.89

1.89

1.89

1.81

1.81

1.81

1.81

1.81

1.81

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.81

1.81

1.81

1.81

1.81

1.81

1.81

Feb.

1.81

1 79

1 79

1.72

1 98

1.98

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

I SO

1 80

1.89

1.89

1.89

1 SO

.......

Mar.

1.89

1.89

1 98

1.98 i QS

1.98

1.81

1.81

2.07

3.12

3.22

2.62

3.02

2.53

2.34

2.16

2.16

1.98

1 QQ

1 QQ

1.98

1 QQ

1.98

1.98

2

OJ

2.62

2.43

2.16

2.07

2.07

1.98

Apr.

1.98

1 98

i QS

1.98

1 98

1.98

2.16

2.07

2.53

2.43

2.16

2.16

2.16

2.16

2.16

2.16

4.07

2.53

2.07

2.62

2.53

2.34

2.25

2.25

2.16

2.16

1.98

1.98

1 QQ

1.98

May.

1.68 i QS

1.98

2.16

2.16

1.98

1 98

1.98

1.98

1.98

1.98

1.98

1.98

1.81

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.10

1.48

2.07

1.17

1.10

June.

1.17

1.10

1.10

1.10

1.10

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.25

1.25

1.25

1.25

1.25

1.17

1.25

1.17

1.98

1.89

July.

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

1.89

2.43

2.43

2.25

3.32

2.53

2.16

2.16

2.16

2.07

2.07

2.07

2.07

2.07

2.16

2.16

1.32

1.32

1.32

1.32

1.32

1.32

Aug.

1.32

1.32

1.32

1.32

1.32

1.25

1.25

1.25

1.17

1.17

1.17

1.17

1.17

1.17

1.32

1.17

1.17

1.17

1.17

1.17

1.17

1.17

1.17

1.17

1.17

1.17

1.25

1.17

1.17

1.17

1.17

Sept.

1.17

1.10

1.10

1.03

1.10

1.10

1.10

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

.96

Oct.

0.96

Qfi

.96

.96

.96

.96

Qfi

.96

.96

.96

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.17

1.10

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

Nov.

1.03

1 03

1 03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.10

1.10

1.10

1.10

1.03

1.03

1.03

1.03

1 03

1.03

Dec.

1.03

1 9f»

2 no

2.53

2.43

1.72

1.17

1.10

1.10

1.40

1.25

1.56

1 03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.64

1.25

1.10

1.03

1.03

1.03

1.03

1.03

1.03

1.03

1.03

NOTE. Discharge computed from Francis's formula: Q,=3.33 LH^ when L=3.0 feet.

Monthly discharge ofAkulikuli Spring at weir near Kapaa, Kauai,for 191%.

Month.

May.....................................................

July.....................................................

Discharge in second-feet.

Maximum.

2.07 

1.98 

3.22 

4.07 

2.16 

1.98 

3.32 

1.32 

1.17 

1.17 

1.10 

2.92

4.07

Minimum.

1.81 

1.72 

1.81 

1.98 

1.03 

1.03 

1.32 

1.17 

.96 

.96 

1.03 

1.03

.96

Mean.

1.87 

1.88 

2.20 

2.23 

1.53 

1.16 

1.97 

1.21 

1.04 

1.01 

1.04 

1.29

1.53

Run-off

(total in 

acre-feet).

115.0 

108.0 

135.0 

133.0 

94.1 

69.0 

121.0 

74.4 

61.9 

62.1 

61.9 

79.3

1,110
ISLAND OP KAUAJ. 85

KAPAHI DITCH AT KAPAHI, NEAR KAPAA, KATTAI.

Location. About 4 miles west of Zealia and 600 feet below the diversion dam in

Kapaa River.

Records available. April 15, 1909, to December 31, 1912. 

Gage. Watson clock register; datum unchanged. 

Disdiarge measurements. There is a 20-foot sharp-crested weir immediately

below the gage, but meter measurements give a different rating from the weir

formula.

Accuracy. Records good. 

Cooperation. Station maintained in cooperation with the Makee Sugar Co.

The following discharge measurement was made by W. V. Hardy: 

February 16, 1912: Gage height, 0.31 foot; discharge, 10.6 second-feet.

Daily gage height, in feet, of Kapahi ditch at Kapahi, near Kapaa, Kauai,for 191%.

[K. Okimoto, observer.]

Day.

1. ..............

2...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17............... 

18...............

19............... 

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.26

.35

 w

.39

.39

.39

.39

.39

.39

.39

.40

.39

.44

.47

.45

.42

.39

.37

.37

.35

.35

.34

.33

Feb.

0.33

.32

.32

.33

.33

.32

.32

.32

.32

.32

.31

.31 

.31

.31 

.31

.32

.43

.66

.51

.40

.48

.41

.36

.36

Mar.

0.59

.42

.85

.48

.39

.39

.49

.48

.53

.40

.34

.28

.34

.34

.33

.33

.33 

.40

.42 

.43

.43

.42

.42

.42

.45

.42

.42

.42

.41

.41

.42

Apr.

0.42

.41

.38

.40

.43

.43

.44

.43

.44

.43

.43

.42

.42

.43

.42

.41

.52 

.35

.27

.27

.26

.26

.26

.30

.41

.41

.40

.39

.37

.34

May.

0.33

.33

.34

 .43

- .40

.37

.35

.41

.35

.33

.33

.36

.39

.54

.67

.40

.39 

.35

.33 

.33

.36

.45

.42

.55

.38

.35

.65

.85

.46

11

.36

June.

0.35

.35

.36

.52

.42

.35

.34

.37

.41

.36

.33

.33

.47

.36

.37

.......

.......

V)

July.

0.32

.32

.32

.32

.33

.36

.56

.38

.39

.92

.68

.53

.63

.67

.45

.50

.56 

.52

.45 

.41

.41

.42

.43

.51

.40

.52

.39

.36

.37

40

.37

Aug.

0.33

.32

.31

.34

.61

.52

.43

.41

.46

.42

.40

.36

.34

.36

.43

.36

.35 

.36

.36

.38

.97

.60

.43

.45

.34

17

.46

Sept.

0.42

.46

.40

.38

.35

.68

.40

.36

.35

.33

.32

.32

.32

.31

.11

.18

.41 

.33

.36 

.34

.35

.33

.32

.31

.30

.30

.29

.32

.37

.41

Oct.

0.43

.34

.53

.37

.38

.37

.43

.47

.43

.40

.48

.40

.38

.36

.42

.45

'"'.so'

.58

.45

.42

.37

.55

.65

.43

.41

.38

.42

.36

Nov.

0.34

.32

.32

.32

.46

.34

.33

.52

.50

.35

.34

.33

.31

.30

.45

.35

.31

.36

.37 

.44

-.67

.83

.58

.43

.38

.34

.33

.32

.53

S7

Dec.

0.78

.57

.46

.11

.04

.04

.05

.38

.29

.40

.40

.39

.28

.25

.25

.31

.34 

.33

.40 

.42

.63

.42

.38

' .42

.42

.42

.41

.38<*i

.35

35

Daily discharge, in second-feet, of Kapahi ditch at KapaM, near Kapaa, Kauai, for 191%.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

Jan.

8.0

13.0

15.5

15.5

15.5

15.5

15.5

15.5

15.5

15.5

Feb.

11.8

11.8

11.8

11.8

11.2

11.2

11.2

11.2

11.8

11.8

Mar.

33.5

17.6

71.0

22.4

15.5

15.5

23.2

22.4

27.0

16.2

Apr.

17.6

16.9

14.8

16.2

18.4

18.4

19.2

18.4

19.2

18.4

May.

11.8

11.8

12.4

18.4

16.2

14.2

13.0

16.9

13.0

11.8

June.

13.0

13.0

13.6

26.0

17.6

13.0

12.4

14.2

16.9

13.6

July.

11.2

11.2

11.2

11.2

11.8

13.6

30.0

14.8

15.5

82.0

Aug.

11.8

11.2

10.6

12.4

36.0

26.0

18.4

16.9

20.8

17.6

Sept.

17.6

20.8

16.2

14.8

13.0

45.0

16.2

13.6

13.0

11.8

Oct.

18.4

12.4

27.0

14.2

14.8

14.2

18.4

21.6

18.4

16.2

Nov.

12.4

11.2

11.2

11.2

20.8

12.4

11.8

26.0

24.0

13.0

Dec.

60.0

31.0

20.8

2.0

.6

.6

.8

14.8

9

K

16.2
86 WATER RESOURCES of HAWAII, 1911

Daily discharge, in second-feet, of Kapahi ditch at Kapahi, near Kapaa, Kauai, for

1912 Continued.

Day.

11...............

12...............

13...............

14...............

15...............

16...............

17............... 

18...............

19............... 

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

16.2

15.5

19.2

21.6

20.0

17.6

15.5 

14.2

14.2 

14.2

14.2

14.2

13.6

13.6

13.6

13.0

13.0

13.0

13.0

12.4

11.8

Feb.

11.2

11.2

11.2

11.2

11.2

10.6

10.6 

10.6

10.6 

10.6

11.2

18.4

42.5

25.0

16.2

22.4

16.9

13.6

13.6

Mar.

12.4

9.0

12.4

12.4

11.8

11.8

11.8 

16.2

17.6 

18.4

18.4

17.6

17.6

17.6

20.0

17.6

17.6

17.6

16.9

16.9

17.6

Apr.

18.4

17.6

17.6

18.4

17.6

16.9

26.0 

13.0

8.5 

8.5

8.0

8.0

8.0

10.0

16.9

16.9

»16.2

15.5

14.2

12.4

May.

11.8

13.6

15.5

28.0

43.5

16.2

15.5 

13.0

11.8 

11.8

13.6

20.0

17.6

29.0

14.8

13.0

41.0

71.0

20.8

19.2

13.6

June.

11.8

11.8

21.6

13.6

14.2

.......

.......

11.2

July.

45.0

27.0

38.5

43.5

20.0

24.0

30.0 

26.0

20.0 

16.9

16.9

17.6

18.4

25.0

16.2

26.0

15.5

13.6

14.2

16.2

14.2

Aug.

16.2

13.6

12.4

13.6

18.4

13.6

13.0 

13.6

13.6 

14.8

90.0

35.0

18.4

20.0

12.4

31.0

20.8

Sept.

11.2

11.2

11.2

10.6

2.0

4.2

16.9 

11.8

13.6 

12.4

13.0

11.8

11.2

10.6

10.0

10.0

9.5

11.2

14.2

16.9

Oct.

22.4

16.2

14.8

13.6

17.6

20.0

" "es.'o"

32.5

20.0

17.6

14.2

29.0

41.0

18.4

16.9

14.8

17.6

13.6

Nov.

12.4

11.8

10.6

10.0

20.0

13.0

10.6 

13.6

14.2 

19.2

43.5

68.0

32.5

18.4

14.8

12.4

11.8

11.2

27.0

31.0

Dec.

16.2

15.5

9.0

7.5

7.5

10.6

12.4 

11.8

16.2 

17.6

38.5

17.6

14.8

17.6

17.6

17.6

16.9

14.8

13.0

13.0

13.0

NOTE. The five discharge measurements made in 1911 land 1912 give a very well-defined curve that 

has a different slope from the curve of weir formula Q=3.33 LHf when L=20 feet. Daily discharge 

for 1912 determined from curve derived from meter measurements. Discharge interpolated for days for 

which gage heights are missing, Jan. 20 to 27 and Feb. 2 to 6.

Monthly discharge of Kapahi ditch at Kapahi, near Kapaa, Kauai,for 1912.

Month.

January. .............................. ...........

February................... .....

March................................. ........ .

April..............................................

May......................... . ... ..

June 1-15,30.... ...... ................ . .....

July...............................................

August 1-25, 30-31.................................

September ........................... ......

October 1-16, 20-31... ..............................

November. .................

The period ...........

Discharge in second-feet.

Maximum.

21.6 

42.5 

71.0 

26.0 

71.0 

26.0 

82.0 

90.0 

45.0 

63.0 

68.0 

60.0

Minimum.

8.0 

10.6 

9.0 

8.0 

11.8 

11.2 

11.2 

10.6 

2.0 

 12.4 

10.0 

.6

Mean.

14.8 

13.9 

19.1 

15.5 

19.2 

14.8 

22.5 

20.4 

13.5 

2fr7 

18.7 

15.3

Run-off 

(total in 

acre-feet).

910 

800 

1,170 

922 

1,180 

471 

1,380 

1,090 

803 

1,150 

1,110 

941

11,900

Accuracy.

B. 

B.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

NOTE. No record obtained June 16-29, Aug. 26-29, and Oct. 17-19. Mean for June is mean of 16 days. 

Mean for August is mean of 27 days. Mean for October is mean of 27 days.

KANEHA DITCH AT WEIR NEAR KEALIA, KATJAI.

Location. About 5 miles northwest of Kealia, a short distance below the outlet from

the Kaneha reservoir.

Records available. January 1, 1909, to December 31, 1912. 

Gage. Staff gage; read once a day; datum unchanged; record from Watson clock

register established in 1910 believed unreliable. 

Discharge measurements. Made with 20-foot sharp-crested weir. 

Accuracy. Fair. 

Cooperation. Estimates of daily discharge in million gallons furnished by Ma.kee

Sugar Co.
ISLAND OF KATJAI. L 87

Daily discharge, in million gallons, of Kaneha ditch at weir near Kealia, Kauai, for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...:...........

12...............

13...............

14...............

15...............

16............... 

17............... 

18...............

19...............

20...............

21............... 

22............... 

23...............

24..............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

7.09

7.09

7.09

3.86

3.86

3.86

3.86

10.90

3.86

1.36

1.36 i 3fi

3.86

7.09

1.36

1.36 

1.36 

1.36

1.36

1.36

1.36 

1.36 

1.36

1.36

1.36

1.36

1.36

3.86

1.36

1.36

Feb.

1.36

1.36

1.36

1.36

1.36

1.36

1.36

1.36

1.36

1.36

1 ^ft

1.36

1.36

1.36

1.36

1.36 

1.36 

1.36

1.36

1 ^fi

1.36 

1.36 

10.90

5.39

W on

10.90

5.39

5.39

5

0Q

Mar.

15.40

2.50

10.90

3.86

1.36

1.36

7109

7.09

7 09

30.90

30.90 in on

30.90

7.09

15.40

3.86 

3.86 

7.09

3.86

3.86

3.86 

3.86 

3.86

30.90

on on

10.90

3.86

3.86

3

0C

3.86

3.86

Apr.

1.36

1.36

1.36

1.36

25.30

8.94

25.30

15.40

3.86

3.86

3 ftA

3.86

15.40

3.86

3.86

3.86 

3.86 

10.90

7 09

3.86

3.86 

3.86 

3.86

3.86

3.86

3.86

3.86

1.36

1.36

1.36

May.

i <tfi

1.36

1.36

1 3fi

I

Ofi

1.36

1.36

1.36

I

Ofi

1 ^fi

1.36

7 no

3.86

15.40

1 flQ

1.36 

1.36 

1.36

1.36

1.36

1.36 

1.36

1.36

1

00

1.36

7 no

15.40

3

0C

1.36

1.36

June.

1.36

1.36

1.36

1.36

1 ^fi

1.36

1.36

1.36

1.36

I

Ofi

1 36

1.36 i f; dn

i 3fi

i ^fi

1.36 

1.36 

3.86

3.86

3.86

3.86 

3.86 

3.86

3.86

10 90

10.90

1 ^fi

3.86

3

0C

July.

1.36

1.3ft

1.36

1.36

1.36

i 3/5

20.10

1.36

3.86

25.30

43 20

in on

10.90

56.70 in on

10.90 

7.09 

3.86

3.86

3

Gfi

3.86 

3.86 

3.86

3.86

1.36

1.36

1.36

3.86

1.36

7.09

1.36

Aug.

1.36

1.36

1.36

10.90

1.36

1.36

1.36

1.36

1.36

1 ^fi

1 ^fi

1.36

20.10

3.86

1.-36 

1.36 

1.36

1.36

1.36

3.86 

7.09 

1.36

3.86

1.36

1.36

10.90

3.86

7.09

7.09

3.86

Sept.

1.36

1.36

1.36

1.36

1.36

10.90

1.36

1.36

1.36

1.36

1 ^fi

1.36

1.36

1.36

1.36

7.09 

7.09 

1.36

1.36

1.36

1.36 

1.36 

1.36

8.94

8.94

1.36-

3.86

5.39

3.86

3.86

Oct.

8.94

3.86

10.90

5.39

5.39

5.39

5.39

10.90

7.09

5.39

7.09

7.09

7.09

7.09

5.39

7.09 

5.39 

7.09

20.10

15.40

20.10 

7.09 

7.09

5.39

20.10

8.94

5.39

5.39

5.39

7.09

5.39

Nov.

5.39

5.39

5.39

5.39

5.39

5.39

5.39

10.90

5.39

5.39

5.39

5.39

5.39

5.39

5.39

5.39 

5.39 

5.39

3.86

3.86

10.90 

20.10 

8.94

5.39

5.39

5.39

5.39

5.39

13.00

13.00

Dec.

20.10

30.90

37.00

20.10

10.90

7.09

7.09

7.09

10.90

7.09

7 no

7.09

7.09

7.09

7.09

20. 10 

10.90 

3.86

3.86

3.86

20.10 

15.40 

7.09

10.90

15.40

10.90

3.86

1.36

1.36

1.36

1.36

NOTE. Daily discharge, in million gallons, furnished by Makee Sugar Co. Discharge computed from 

formula for a 20-foot sharp-crested weir without end contractions. Current-meter measurements show the 

discharge obtained from formula to be too high by 10 to 12 per cent.

Monthly discharge of Kaneha ditch at weir near Kealia, Kauai, for 1912.

Month.

February ................................................

May.....................................................

June. .... ................................................

July.....................................................

The year. .........................................

Discharge in million gallons.

Maximum.

10.90 

10.90 

30.90 

25.30 

15.40 

15.40 

56.70 

20.10 

10.90 

20.10 

20.10 

37.00

56.70

Minimum.

1.36 

1.36 

1.36 

1.36 

1.36 

1.36 

1.36 

1.36 

1.36 

3.86 

3.86 

1.36

1.36

Mean.

2.97 

2.90 

9.96 

5.99 

2.98 

3.21 

8.20 

3.54 

2.95 

8.22 

6.77 

10.50

5.71

Run-off 

(total in 

million 

gallons).

92.12

84.18 

308.85 

179.61 

92.43 

96.42 

25414 

109.67 

88.49 

254.82 

203.14 

325.38

2,089.25

ANAHOLA EIVEB BASIN. 

ANAHOLA RIVER AT 1,140-FOOT ELEVATION NEAR KEALIA, KATTAI.

Location. About 8 miles northwest of Kealia, Kauai, and 60 feet above the lower

falls.

Records available. March 28 to December 31, 1912. 

Gage. Inclined staff; read at irregular intervals; datum unchanged. 

Channel. Rock; probably permanent. 

Discharge measurements. Made by wading.
RESOURCES OS1 HAWAII, 1912. 

Discharge measurements of Anahola River at 1,140-foot elevation, near Kealia, Kauai, in

TDate.

Mar. 28

Apr. 21 a

24

28

Hydrographer.

W. V. Hardy......

.....do.............

.....do.............

.....do.............

Gage 

height.

Feet. 

9.88

10.00

9 a?

9 89

Discharge.

Sec.-ft. >\ o>\

7.67

K KQ

4 49

Date.

May 1

Oct. 24

Nov. 11

Hydrographer.

W V Tf&rf\ IT

.....do.............

height.

Feet. 

9.72

9.56

9 79

9 74

Discharge.

Sec.-ft.

O QO

1 79

3

RA

3 ,11

a Measurement made about 5 feet below gage.

NOTE. All measurements made at same section about one-quarter mile above gage unless otherwise 

noted.

Daily gage height, in feet, of Anahola River at 1,140-foot elevation, near Kealia, Kauai,

for 1912.

[Shiraki, observer.]

Day.

1. .........

2.......... 

3..........

4..........

5..........

3..........

7..........

8..........

9.......... 

10..........

11..........

12..........

13..........

14..........

15.......... 

16..........

Mar.

......

Apr.

......

......

......

......

May.

9.72

9.72 

9.72

9.78

9

DQ

"g.'eg"

9.67

9.72

9.83

June.

9.75

9.72

9 7n

~9."76"

10.30

9.72

July.

9.62

9.62 

9.70

......

9.90 

11.00

10.75

10.00

Nov.

......

......

......

9.75

9.65

9.70

10.00 

9.72

Day.

17...........

18...........

10

20...........

91

24...........

25........... 

26...........

97

28...........

29...........

30...........

31...........

Mar.

......

......

Apr.

9.99

9.87

9.96

9.82

May.

9 71

9.72

9.89

9.90

10.00

10.15

9.83

June.

9.65

9.62

9.60

9.52

9

Efi

9.65

9.60

9.65

......

July.

9

QA

9.88 

11.15

10.35

9.85

9.85

Nov.

......

......

......

: NOTE, Miscellaneous gage readings obtained when observer was hi vicinity of station.

AKAHOLA RIVER. ABOVE DAM AT KIOKALA, NEAR KEALIA, KATTAI.

Location. About one-fourth mile above the dam at Kiokala and 6 miles northwest 

of Kealia.

Records available. August 22, 1910 to December 31, 1912.

Gage. Inclined staff installed August 22,1910; datum unchanged. Friez automatic 

gage was carried away by a flood November 2^, 1910, and the station relocated at 

the dam at Ziokala on December 15,1910, where it was maintained until December 28, 1912, 'when equipment was moved back to its first site about one-fourth 

mile above the dam, and Friez automatic register was installed.

Channel. Bed of stream rocky and permanent.

Discharge measurements. By wading and from footbridge.

Cooperation. Station maintained in cooperation with the Makee Sugar Co.

Discharge measurements of Anahola River above dam at Kiokala near Kealia, Kauai, in

Date.

Apr. 24 May 2

June 28 

Dec. 22

Hydrographer.

W.V. Hardy ......

.....do............. 

.....do.............

Gage 

height.

Feet. 

1.05 

90

.81 

1.10

Discharge.

Sec.-ft. 

17.1 11 9

8.72 

19.6

Date.

Dec. 22 

25

28

Hydrographer.

W.V. Hardy...... 

.....do.............

.....do.............

Gage 

height.

Feet. 

1.38 

1.17

.98

Discharge.

Sec.-ft. 

37.7 

23.0

13.3
ISLAND OP KAUAI. 

The following gage readings were made during the year:

89

Apr.

Day.

25...... 

27......

Gage

height.

1.10 

1.00

May.

Day.

4.......

10...... 

18...... 

25...... 

28......

Gage 

height.

0.95 

.86 

.92 

.91 

1.59

June.

Day.

1.......

8....... 

15...... 

22......

Gage 

height.

0.90

.84 

.81 

.79

July.

Day.

10...... 

13...... 

15......

Gage 

height.

1.90 

2.09 

1.41

Sept.

Day.

19......

Gage 

height.

1.30

Dee.

Day.

22..... 

23. 

24. 

25. 

26. 

27. 

28. 

29. 

30.

Gage 

height.

1.24 

1.08 

1.51 

1.34 

1.24 

1.02 

.96 

.94 

.92

ANAHOLA DITCH AT KIOKALA, NEAR KEALIA, KAUAI.

Location. About 6 miles northwest of Kealia.

Records available. May 10, 1909, to December 31, 1912.

Gage. Watson clock register; datum unchanged.

Discharge measurements. 10-foot sharp-crested weir, iron crest.

Accuracy. Records good.

Cooperation. Station maintained in cooperation with the Makee Sugar Co.

Daily discharge, in second-feet, of Anahola ditch at KioJsala, near Kealia, Kauai,for 1912.

Day.

1...............

4...............

5...............

6...............

7...............

8...............

10...............

11...............

12...............

13...............

14..... ...... ....

15...............

16...............

17...............

18............... 

19............... 

20...............

21...............

223"!"!!"!!!!"

24............... 

25...............

26............... 

27............... 

28...............

9Q

30............... QI

Jan.

7.5

7.5

7.5

8.7

9.7

6.3

3.7

1.9

.5

5.5

5.5

5.5

5.7

6.6

8.1

7.8

8.1 

7.2 

6.9

8.7

6.3

5.5 

5.5 

5.7 

5.2

4.9 

4.4 

6.6 

3.9

0.0 

0.0

Feb.

5.5

6.3

7.8

6.6

5.7

'5.5

5.5

5.2

5.2

4.9

5.7

4.9

4.7

4.7

4.4

4.4

4.2

4.7 

5.5 

4.2

4.7 

7.5 

14.3 

13.2 

10.4

10.7 

9.0 

6.6 

6.3

Mar.

12.5

7.8

14.3

10.4

7.2

7.2

10.4

11.1

17.9

18.7

17.9

16.3

20.0

20.0

15.5

14.3

13.2 

14.3 

11.4 

14.0

11.8 

10.4 

10.4 

14.0 

19.1

15.9 

14.7 

13.6 

12.1

11.1 

11.1

Apr.

10.7

9.4

8.7

12.5

16.3

15.9

18.3

16.3

16.3

14.3

13.2

12.8

13.2

15.1

13.2

13.6

10.7 

10.7 

10.4 

9.4

8.4

May.

7.8

7.8

7.8

8.4

8.7

7.8

7.5

10.7

6.9

6.0

5.7

8.4

7.2

13.2

15.9

11.4

11.8 

8.1 

7.2 

6.6

6.3 

9.4 

7.8 

12.5 

8.1

6.3 

9.4 

16.7 

14.7

10.1

8 1

June.

7.2

6.3

6.0

6.3

5.5

4.9

4.7

4.7

5.2

6.0

4.7

4.9

7.5

6.0

4.4

4.4

4.2 

3.9 

4.2 

3.9

3.4 

"~4.~2"

2.8

July.

2.3

1.6

2.8

2.8

.9

11.8

7.2

9.7

22.0

22.0

16.7

18.7

25.0

22.0

19.1

21.0 

17.5 

14.7 

12.5-

II.* 

10.7 

10.7 

13.6 

9.4

12.5 

9.4

8.4 

8.7

14.0

8 7

Aug.

7.2

6.3

6.0

7.8

17.5

15.1

10.1

10.1

10.4

8.1

7.5

7.5

6.6

16.7

18.3

12.8

10.1 

8.4 

7.5 

7.8

9.0 

15.9 

12.1 

9.4 

9.7

7.8 

16.7 

9.7 

8.1

14.3 

10.1

Sept.

11.8

10.4

10.4

8.1

7.2

15.1

10.7

9.0

8.7

9.4

7.2

6.3

5.7

5.5

4.9

6.0

11.1 

6.3 

6.9 

6.3

5.7 

5.7 

4.9 

4.4 

4.2

3.9 

3.7 

3.9

5.7

6.0

Oct.

6.6

4.9

8.7

5.2

5.2

4.9

6.9

10.1

11.1

11.1

10.7

9.7

8.1

11.1

7.5

8.7

6.0

7.5 

18.7 

12.5

14.0 

9.7

8.1 

7.2 

9.0

15.5 

10.7

8.1 

8.7

10.7 

9.4

Nov.

6.9

6.0

7.2

6.0

10.4

7.2

6.3

9.4

15.1

7.5

6.3

5.7

5.2

- 4.7

9.4

6.6

4.9 

6.0 

6.6 

5.2

12.1 

16.7 

16.7 

10.7

7.8

6.9 

6.0 

6.9 

14.7

16.3

Dee.

17.9

17 ^

16.7

16.7

14.7

6.6

14.7

16.7

16.3

14.7

13.2

11.8

11.1

9.7

9.0

10.7

15.9 

12.1 

12.5 

12.5

13.2 

13.6 

12.8 

14.3 

14.3

13.6 

11.8 

10.7 

9.7

9.4

9

n

NOTE. Discharge computed from Francis's formula: Q=3.33 LHT when L=10 feet. Comparative 

measurements made in 1911 show a seepage loss in ditch between intake and weir. To find discharge at 

intake multiply discharge given by factor 1.55.
90 WATER EESOITECES OF HAWAII, 1912.

Monthly discharge ofAnahola ditch at Kiokala, near Kealia, Kauai,for 1912.

Month.

April o..................................................

May.....................................................

July.....................................................

Discharge in second-feet.

Maximum.

9.7 

14.3 

20.0 

18.3 

16.7 

7.5 

25.0 

18.3 

15.1 

18.7 

16.7 

17.9

25.0

Minimum.

0.0 

4.2

7.2 

8.4 

5.7 

2.8 

.9 

6.0 

3.7 

4.9 

4.7 

6.6

.0

Mean.

5.71 

6.49 

13.5 

12.8 

9.17 

5.01 

1.21 

10.5 

7.17 

9.24 

8.58 

13.0

C9.06

Run-off 

(total in 

acre-feet).

351.0 

373.0 

830.0 

534.0 

564.0 

229.0 

744.0 

646.0 

427.0 

568.0 

511.0 

799.0

6,580

a Ditch was dry Apr. 17-25. Mean for April is the mean of 21 days when ditch carried water. 

6 No record June 22-28; clock register out of order. Mean for June is the mean of 23 days. 

c Mean for year is mean for 350 days.

KALIHIWAI EIVEE BASIN. 

KALIHIWAI RIVER NEAR XTLAUEA, KATTAI.

Location. About 2 miles southwest of Kilauea, at an elevation of about 600 feet, 

about 5 miles above mouth of river and one-half mile below Hoopouli Falls, and 

is reached by saddle horse on trail from Princeville plantation.

Records available. August 21 to December 31, 1912.

Gage. A vertical staff gage; read once each day; hour of reading irregular.

Channel. Practically permanent.

Discharge measurements. Made by wading.

Cooperation. Station maintained in cooperation with the Princeville plantation.

The following discharge measurement was made by W. V. Hardy: 

August 21, 1912: Gage height, 6.22 feet; discharge, 33.9 second-feet.

Daily gage height, in feet, of Kalihiwai River near Kilauea, Kauai, for

[Kakimoto, observer.]

Day.

1. ......

2.......

3.......

4.......

5.......

6.......

7.......

8.......

9.......

10.......

11.......

12.......

13.......

14.......

35.......

Aug. Sept.

6.20

6.25

6.20

6.20

6.20

6.40

6.25

6.20

6.20

6.20

6.20

6.20

6.15

6.10

6.10

Oct.

6.00

5.95

5.92

5.85

5.85

5.92

5.98

6.70

6.30

6.10

6.00

6.00

6.00

5.95

5.90

Nov.

6.10

6.00

6.00

5.98

6.10

6.25

6.00

6.00

6.25

6.00

6.00

5.98

5.98

5.95

6.10

Dec.

6.18

6.30

6.6

11.70

7.10

6.6

6.4

6.4

6.35

6.35

6.32

6.30

6.30

6 40

6.35

Day.

16.......

17.......

18.......

19.......

20.......

21.......

22.......

23.......

24.......

25.......

26.......

27....... 9a

9Q

30.......

31.......

Aug.

6.20

6.80

6.30

6.20

6.20

6.20

6.70

A 3A

6.35

6.30

6.25

Sept.

6.10

6.08

6.08

6.50

6.50

6.00

5.92

5.90

5.95

5.S5

5.80

s so

5.80

5.80

5 on

Oct.

6.10

6.00

6.05

6.20

6.40

6.60

6.10

6.20

6.30

6.25

fi 97

6.25

6.20

6.18

6.15

6.13

Nov.

6.00

6.00

6.20

6.10

6.75

6.20

6.18

6.10

6.15

6.10

6.10

6.05

6.15

6.20

6.10

Dec.

6.30

6.33

6.38

6.35

6.30

6.30

6.30

6.45

6.40

6.40

6.38

6.35

6.30

6.28

6.27

6.20
ISLAND OF KAUAl.

HANALEI RIVER BASIN. 

HANALEI RIVER NEAR HANALEI, KATTAI.

Location. About 5 miles up the river from Hanalei. 

Records available. December 28, 1911, to December 31, 1912. 

Gage. Staff gage; read once daily; datum unchanged. 

Channel. Bowlders; probably permanent. 

Discharge measurements. Cable and car.

Discharge measurements of Hanalei River near Hanalei, Kauai, in 1912.

Date.

Feb. 20

Hydrographer.

W. V. Hardy.............................................................

Gage 

height.

Feet. 

6.39

7.42

Discharge.

Sec.-ft. 

86.7

665

Daily gage height, in feet, of Hanalei River near Hanalei, Kauai, for 1912.

[Sam Opio, observer.]

Day.

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

6.60

6.50

6.S5

6.S5

6.50

6.50

6.60

6.60

6.70

6.50

6.40

6.40

6.40

6.70

6.50

6.50

6.50

6.50

6.50

6.50

6.50

6.50

6.50

6.50

6.60

6.50

6.50

6.50

6.50

6.50

6.50

Feb.

6.5

6.5

6.5

6.4

6.4

6.5

6.5

6.5

6.5

6.5

' 6.4

6.4

6.4

6.4

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.6

6.6

6.5

6.5

6.5

6.5

Mar.

6.5

6.5

6.6

6.6

6.6

6.6

6.7

6.7

6.7

6.9

6.9

6.8

6.7

6.6

6.7

6.7

6.7

6.7

6.5

6.5

6.5

6.5

6.5

7.0

7.3

6.7

6.6

6.6

6.5

6.5

6.5

Apr.

6.5

6.5

6.5

6.6

6.6

6.6

7.8

7.8

7.8

7.8

7.6

7.6

7.6

7.5

7.5

6.6

8.6

7.9

7.8

7.7

6.9

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

6.7

May.

6.7

6.6

6.6

6.6

6.6

6.5

6.6

6.6

6.6

6.6

6.6

6.4

6.4

6.6

6.8

6.6

6.6

6.5

6.6

6.4

6.4

6.5

6.5

6.5

6.5

6.5

6.8

6.8

6.7

6.5

6.5

June.

6.5

6.5

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.5

6.4

6.4

6.4

6.4

6.4

6.4

6.4

July.

6.5

6.4

6.4

6.4 6.5-

6.5

6.5

6.4

6.4

6.6

6.5

6.5

6.5

6.5

6.5

6.4

6.5

6.4

6.4

6.4

6.5

6.5

6.4

6.4

6.4

6.5

6.5

6.4

6.4

6.5

6.5

Aug.

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

7.8

6.5

6.4

6.4

6.4

6.4

6.4

6.4

7.0

6.6

6.5

6.4

6.5

8.1

6.6

6.5

6.6

6.5

Sept.

6.5

6.6

6.6

6.5

6.6

8.6

6.6

6.5

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.5

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

6.4

Oct.

6.4

6.4

6.4

6.4

6.4

6.3

6.3

7.2

6.5

6.4

6.4

6.3

6.3

6.3

6.3

6.4

6.4

6.4

6.4

6.9

6.9

6.7

6.4

6.4

6.4

6.6

6.4

6.6

6.5

6.5

6.4

Nov.

6.4

6.4

6.4

6.4

6.5

6.5

6.5

6.6

6.6

6.5

6.5

6.4

6.4

6.4

6.5

6.4

6.4

6.5

6.4

6.5

6.6

6.8

6.5

6.4

6.4

6.4

6.4

6.4

6.4

6.4

Dec.

6.7

6.9

7.3

6.5

6.4

6.4

6.5

6.6

6.5

6.6

6.6

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.5

6.6

6.8

6.7

6.9

6.6

6.6

6.5

6.5

6.5

6.5

6.5
92 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, of Hanalei River near Hanalei, Kauai, for 191%.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8'.. .............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

171

127

149

149

127

127

171

171

220

127

88

88

88

220

127

127

127

127

127

127

127

127

127

127

171

127

127

127

127

127

127

Feb.

127

127

127

88

88

127

127

127

127

127

88

88

88

88

127

127

127

127

127

127

127

127

127

171

171

127

127

127

127

Mar.

127

127

171

171

171

171

220

220

220

330

330

273

220

171

220

220

220

220

127

127

127

127

127

389

582

220

171

171

127

127

Apr.

127

127

127

171

171

171

930

930

930

930

790

790

790

720

720

171

1,530

1,000

930

860

330

220

220

220

220

220

220

220

220

220

May.

220

171

171

171

171

127

171

171

171

171

171

88

88

171

273

171

171

127

171

88

88

127

127

127

127

127

273

273

220

127

June.

127

127

88

88

.88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

88

127

88

88

88

88

88

88

88

July.

127

88

88

88

127

127

127

88

88

171

127

127

127

127

127

88

127

88

88

88

127

127

88

88

88

127

127

88

88

127

127

Aug.

88

88

88

88

88

88

88

88

88

88

88

88

88

930

127

88

88

88

88

88

88

389

171

127

88

127

1,150

171

127

171

127

Sept.

127

171

171

127

171

1,530

171

127

88

88

88

88

88

88

88

127

88

88

88

88

88

88

88

88

88

88

88

88

88

88

Oct.

88

88

88

88

88

55

55

515

127

88

88

55

55

55

55

88

88

88

88

330

330

220

88

88

88

171

88

171

127

127

88

Nov.

88

88

88

88

127

127

127

171

171

127

127

88

88

88

127

88

88

127

88

127

171

273

127

88

88

88

88

88

88

88

Dee.

220

330

582

127

88

88

127

171

127

171

171

127

127

127

127

127

127

127

127

127

171

273

220

171

171

127

127

127

127

197

Monthly discharge of Hanalei River near Hanalei, Kauai, for 1912.

Month.

April ..............................................

May...............................................

July...............................................

O etober ...........................................

The year ....................................

Discharge in second-feet.

Maximum.

220 

171 

582 

1,530 

273 

127 

171 

1,150 

1,530 

515 

273 

582

1,530

Minimum.

88 

88 

127 

127 

88 

88 

88 

88 

88 

55 

88 

88

55

Mean.

136.0 

122.0 

205.0 

508.0 

161.0 

91.9 

111.0 

173.0 

152.0 

124.0 

114.0 

171.0

172.0

Run-oft 

(total in 

acre-feet).

8,360 

7,020 

12,600 

30,200 

9,900 

5,470 

6,820 

10,600 

9,040 

7,620 

6,780 

10,500

125,000

Accuracy.

B. 

B. 

B. 

B. 

B. 

C. 

B. 

C. 

C. 

C. 

C. 

B.

CHINA DITCH NEAR HANALEI, KAUAI.

Location. About one-fourth mile below the point of diversion from Hanalei River

and nearly opposite Sam Opio's house.

Records available. December 28, 1911, to December 31, 1912. 

Gage. Vertical staff; read once each day, about 10 a. m.; datum unchanged. 

Channel. Probably permanent. 

Discharge measurements. Made from footbridge.
ISLAND OF KATTAI. 

Discharge measurements of China ditch near Hanalei, Kauai, in 1912.

93

Date,

Feb. 20

Aug. 14

Hydrographer.

W.V. Hardy.............................................................

.....do....................................................................

Gage 

height.

Feet. 

3.50

4.00

Discharge.

Sec-ft. 

15 .4

33.0

Daily gage height, in feet, of China ditch near Hanalei, Kauai, for 1912. 

[Sam Opio, observer.]

Day.

1..... ..........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25. .

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

3.4

3.3

3.35

3.3

3.3

3.3

3.4

3.4

3.5

3.4

3.4

3.5

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.4

3.5

3.4

3.4

3.4

3.4

3.4 

3.4

Feb.

3.4

3.4

3.4

3.3

3.3

3.4

3.4

3.4

3.4

3.4

3.6

3.6

3.5

3.5

3.5

3.5

3.5

2.5

3.5

3.5

3.6

3.6

3.4

3.4

3.5

Mar.

3.5

3.5

3.5

3.3

3.4

3.4

3.4

2.9

2.9

2.8

2.7

2.7

2

O

2

0

2.8

2.9

2.9

3.0

3.0

3.0

3.0

3.0

3.2

2.9

2

0

2.8

2.7

2.7 

2.7

Apr.

2.6

2.6

2.6

2.7

2.7

2.7

3.5

3.5

3.4

3.4

3.4

3.4

3 4

3.3

3.3

2.8

5.1

i. Q

4.8

4.6

3.8

3.5

3.7

3.7

3.7

3 7

3.7

4.6

4.6

4.6

May.

4.6

3.1

3.1

3.1 ^i 1

3.1

3.2

o i

3.1

3.1

o 1

3.2

3.2 ^i i

3.5

3

0

3

-i

3.2

3.3

3 9

3.2

3.3

3.3

3

*1

3

*1

3

<>

3.6

3.6

3

K

3.5 

3.3

June.

0.33

.33

.32

.32

09

.32

09

09

.32

.32

.32

.32

09

09

.32

.32

09

.32

.33

OO

.32

.32

.33

.32

.32

09

.32

.32

09

.32

July.

3.3

3.2

3.2

3.2

3.3

3.3

3.4

3.4

3.4

3.5

3.4

3.4

3 A

3.5

3.5

3 A

3 A

3.4

3.4

3 A

3.3

3.3

3.2

3.2

3.3

3.3

3.3

3.2

3.2

3.3 

3.3

Aug.

3.2

3.2

3.3

3.4

3.3

3.3

3.2

3.2

3.2

3.2

3.2

3.2

3.2

4.6

3.4

3.2

3.2

3.2

3.2.

3.2

3.2

4.2

3.4

3.3

3.4

4.8

^i 4

3.5 

3.4

Sept.

3.3

3.6

3.5

3.6

5.1

3.6

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.6

4.0

4.0

4.0

3

Q

3.9

3.9

3.9

3.9

3.8

3.8

3.8

4.0

4.0

4.0

Oct.

4.0

4.0

4.0

4.0

4.0

3.9

3.9

5.8

4.2

4.0

4.0

3.9

3.9

3.9

3.9

4.0

4.0

4.0

4.0

i. Q

4.9

4.3

4.0

4.0

4.0

4.5

4.0

4.5

4.3

4.3 

4.0

Nov.

4.0

4.0

4.0

4.0

4.2

4.2

4.2

4.3

4.3

4.1

4.1

4.0

4.0

4.0

4.3

4.1

4.1

4.2

4.1

4.2

4.3

4.6

4.2

4.1

4.1

4.1

4.1

4.0

4.0

4.0

Dec.

4.6

4.9

5.9

4.2

4.1

4.1

4.2

3.6

3.2

3.3

3.3

3.2

3.2

3.2

3.2

3.2

3.2

3.1

3.1

3.1

3.2

3.5

3.4

3.7

3.2

3.2

3.2

3.2

3.2

.3.2 

3.2

KTTNA DITCH NEAR HANALEI, KAUAI.

Location. About 4 miles up the river from Hanalei and 500 feet below the intake.

Records available. January 17 to December 31, 1912.

Gage. Vertical staff; read once daily, in the morning; datum unchanged.

Channel. Probably permanent.

Discharge measurements. Made from a footbridge.

Accuracy. Records fair.

Discharge measurements of Kuna ditch near Hanalei, Kauai, in

Date.

Jan. 17

Feb. 20

Hydrographer.

W.V. Hardy.............................................................

.....do....................................................................

Gage 

height.

Feet.

4.40

5.12

Discharge.

Secjt. 

10.9

18.5

32.5
94 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Kuna ditch near Hanalei, Kauai, for 1912. 

[W. K. Samuel, observer.]

Day.

1. ..............

2. ..............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12. ..............

13...............

14...............

15...............

16...............

17.............;.

18...............

19...............

20...............

21...............

22............ .

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31..............:

Jan..

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.8

3.9

3.8

3.8

3.8

3.8

3.8

3.8

Feb.

3.8

3.8

3.8

3.7

3.7

3

0

3.8

3.8

3

0

3.8

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.0

4.0

4.5

4.5

4.5

4.5

.......

Mar.

4.5

4.5

4.6

4.6

4.6

4.6

4.7

4.7

4.7

4.8

4.8

4.7

4.7

4.6

4.7

4.7

4.7

4.8

4.8

4.9

4.9

4.9

4.9

5.1

5.3

4.8

4.7

4.7

4.6

4.6

4.6

Apr.

4.5

4.5

4.5

4.6

4.6

4.6

4.9

4.9

4.8

4.8

4.7

4.7

4.7

4.6

4.6

4.4

5.6

5.3

5.2

5.0

4.9

4.6

4.7

4.7

4.7

4.7

4.7

4.7

4.7

4.7

May.

4.7

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.6

4.5

4.5

4.6

4.8

4.6

4.6

4.5

4.5

4.5

4.5

4.6

4.6

4.6

4.6

4.6

4 Q

4.9

4.7

4.6

4.5

June.

4.5

4.5

4.5

4.5

4.5

4.5

4.5

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.4

4.5

4.4

4.4

4.4

4.5

4.4

4.4

4.4

4.4

4.4

4.4

4.4

July.

5.5

5.3

5.3

5.3

5.4

5.4

5.4

5.3

5.3

5.4

5.3

5.3

5.3

5.5

5.5

5.4

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.4

5 4

5.4

5.4

5.4

5.3

Aug.

5.3

5.3

5.1

5.1

5.1

5.1

5.1

5.1

5.1

5.1

5.1

5.1

5.1

5.8

5.3

5.2

5.2

5.1

5.1

5.1

5.1

5.8

5.2

5.2

5.2

5.4

5.8

5.5

5.4

5.5

5.4

Sept.

5.3

5.5

5.5

5.5

5.5

5.8

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.3

5.5

5.3

5.3

5.2

5.2

5.2

5.0

5.0

5.0

4.9

4.9

4.9

4.8

4.8

4.8

Oct.

4.7

4.7

4.7

4.7

4.7

4.7

4.7

5.5

5.1

4.8

4.8

4.7

4.7

4.7

4.7

4.8

4.8

4.8

4.8

5.8

5.8

5.6

4.8

4.8

4.8

5.1

4.8

5.1

5.0

5.0

4.8

Nov.

4.8

4.8

4.8

4.8

5.0

5.0

5.0

5.1

5.1

5.4

5.4

5.3

5.3

5.3

5.5

5.4

5.4

5.5

5.4

5.5

5.6

5.8

5.5

5.4

5.4

5.4

5.4

5.3

5.3

5.3

Dec.

5.6

5.8

6.2

5.5

5.4

5.4

5.5

4.2

4.1

4.2

4.2

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.1

4.2

4.5

4.4

4.7

4.2

3.2

3.2

3.2

3.2

3.2

3.2

Daily discharge, in second-feet, of Kuna ditch near Hanalei, Kauai,for 1912.

Day. -

1...... .........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11..............

12...............

13...............

14......... . ..

15...... .........

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25.......... ....

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

10.4

10.4

10.4

10.4

10.4

10.4

10.4

10.4

11.5

10.4

10.4

10.4

10.4

10.4

10.4

Feb.

10.4

10.4

10.4

9.3

9.3

10.4

10.4

10.4

10.4

10.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

' 18.4

12.7

12.7

20.0

20.0

20.0

20.0

Mar.

20.0

20.0

22.0

22.0

22.0

22.0

24.0

24.0

24.0

26.0

26.0

24.0

24.0

22.0

24.0

24.0

24.0

26.0

26.0

28.0

28.0

28.0

28.0

32.0

37.0

26.0

24.0

24.0

22.0

22.0

22.0

Apr.

20.0

20.0

20.0

22.0

22.0

22.0

28.0

28.0

26.0

26.0

24.0

24.0

24.0

22.0

22.0

18.4

44.0

37.0

35.0

30.0

28.0

22.0

24.0

24.0

24.0

24.0

24.0

24.0

24.0

24.0

May.

24.0

22.0

22.0

22.0

22.0

22.0

22.0

22.0

22.0

22.0

22.0

20.0

20.0

22.0

26.0

22.0

99 n

20.0

20.0

20.0

20.0

22.0

22.0

22.0

22.0

22.0

28.0

28.0

24.0

22.0

20.0

June.

20.0

20.0

20.0

20.0

20.0

20.0

20.0

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

18.4

20.0

IS 4

IS d

20.0

18.4

18.4

18.4

18.4

18.4

18.4

18.4

July.

42.0

37.0

37.0

37.0

39.0

39.0

39.0

37.0

37.0

39.0

37.0

37.0

37.0

42.0

42.0

39.0

37.0

37.0

37.0

37.0

37.0

37.0

37.0

37.0

37.0

39.0

39.0

 JQ f\

39.0

39.0

37.0

Aug.

37.0

37.0

32.0

32.0

32.0

32.0

32.0

32.0

32.0

32.0

32.0

32.0

32.0

49.0

37.0

35.0

35.0

32.0

32.0

32.0

32.0

49.0

35.0

35.0

35.0

39.0

49.0

42.0

39.0

42.0

39.0

Sept.

37.0

42.0

42.0

42.0

42.0

49.0

37.0

37.0

37.0

37.0

37.0

37.0

37.0

37.0

37.0

42.0

37.0

37.0

35.0

35.0

35.0

30.0

30.0

30.0

28.0

28.0

28.0

26.0

26.0

26.0

Oct.

24=0

24.0

24.0

24.0

24.0

24.0

24.0

42.0

32.0

26.0

26.0

24.0

24.0

24.0

24.0

26.0

26.0

26.0

26.0

49.0

49.0

44.0

26.0

26.0

26.0

32.0

26.0

32.0

30.0

30.0

26.0

Nov.

26.0

26.0

26.0

26.0

30.0

30.0

30.0

32.0

32.0

39.0

39.0

37.0

37.0

37.0

42.0

39.0

39.0

42.0

39.0

42.0

44.0

49.0

42.0

39.0

39.0

39.0

39.0

37.0

37.0

37.0

Dec.

44.0

49.0

60.0

42.0

39.0

39.0

42.0

15.4

14.0

15.4

15.4

14.0

14.0

14.0

14.0

14.0

14.0

14.0

14.0

14.0

15.4

20.0

18.4

24.0

15.4

5.0

5.0

5.0

5.0

5.0

5.0
ISLAND OF KAUAI.

Monthly discharge of Kuna ditch near Hanaki, Kauai, for

95

Month.

March. ~~

May...............................................

July...............................................

December .........................................

Discharge in second-feet.

Maximum.

11.5 

20.0 

37.0 

44.0 

28.0 

20.0 

42.0 

49.0 

49.0 

49.0 

49.0 

60.0

Minimum.

10.4 

9.3 

20.0 

18.4 

20.0 

18.4 

37.0 

32.0 

26.0 

24.0 

26.0 

5.0

Mean.

olo.5 

15.4 

24.7 

25.2 

22.2 

18.9 

38.1 

35.9 

35.3 

28.7 

36.4 

20.1

626.7

Run-off 

(total in 

acre-feet).

312

886 

1,520 

1,500 

1,360 

1,120 

2,340 

2,210 

2,100 

1,760 

2,170 

1,240

18,500

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

Mean for January is mean for 15 days. & Mean for year is mean for 351 days.

LUMAHAI RIVER BASIN. 

LTTMAHAI RIVER NEAR WAINIHA, KATTAI.

Location. About 4£ miles west of Hanalei and 300 feet below the point at which

the Kauai Electric Co.'s power line crosses the river. 

Records available. March 24 to December 31, 1912. 

Gage. Staff; datum unchanged. 

Channel. Rocky; probably permanent. 

Discharge measurements. Made from wire suspension bridge.

Discharge measurements of Lumdhai River near Wainiha, Kauai, in 1912.

Date.

Jan. 18

Mar. 26

Aug. 16

Hydrographer.

W.V. Hardy.............................................................

.....do....................................................................

.....do....................................................................

AT,

Feet.

7-99

oS.08

Discharge.

Sec.-ft.

74.7

154

107

a Dam was built about 125 feet below the gage during April, 1912. 

NOTE. Gage heights unreliable, not published.

WAINIHA RIVER BASIN. 

WAINIHA RIVER NEAR WAINIHA, KATTAI.

Location. About 2 miles south of Wainiha and just northeast of the Kauai Electric 

Co.'s power house.

Records available. East Channel, February 25 to December 31, 1912. West 

Channel, December 30,1911, to December 31, 1912.

Gage. Inclined timber gages on both channels; read twice daily, 7 a. m. and 5 p. m.

Channels. There are two large channels, the East Channel and the West Channel, 

and two gages have to be maintained to obtain the total flow of the river at this 

point; both channels rocky and probably permanent. The natives build fish 

dams at the-point where the river divides above the stations, and these shift the 

water from one channel to the other.

Discharge measurements. Made from wire suspension bridges over each channel.

Cooperation. Stations maintained in cooperation with.the Kauai Electric Co.
96 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements of East Channel of Wainiha River near Wainiha, Kauai, in 191%.

Date.

Mar. 19

25

Aug. 23

Hydrographer.

W.V. Hardy.............................................................

.....do... ................................................................

.....do....................................................................

Gage

height.

Feel. 

6.44

8.90

6.89

Discharge.

8ec.-ft. 

6.6

364

18.5

Daily gage height, in feet, of East Channel of Wainiha River near Wainiha, Kauai, for 191% f

[Kauai Electric Co., observer.]

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10. ..............

11...............

12...............

13...............

14. ..............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan. Feb.

6.70

6.60

6.80

6.75

6.85

Mar.

7.95

7.75

7.95

7.55

7.65

7.70

7.45

7.70

8.25

8.85

9.85

8.55

8.05

7.75

7.40

7.20

6.95

6.80

6.45

7.10

i nn

6.70

6.55

7.10

9.15

7.25

7.00

7.20

6.90

6.85

6.85

Apr.

7.10

6.90

6.75

7.15

7 It

7.95

8.85

9 on

8.80

7.75

7.55

7.65

7.35

7.20 7 ">>;

6.95

7.35 7 on

6.65

6.45

fi w

6.60

6.65

6.70

6.75

6.80

6.65

6.60

6.65

6 en

May.

6.65

6.70

6.85

6.90

7.05

7.00

7.10

7 on

6.80

6.70

6.70

6.70

6.80

8.15

7 7H

7.10

7.05

6 Qpr

6.80

6.80

6.85

7.15

6.90

7 00

6.85

6.80

7 00

8.85

7 90

7.10

6.90

June.

6.80

6.80

6.80

6.90

6.80

6.80

6.80

6.80

6.90

& QA

6.80

6.80

6.90

6.80

6.85

6.90

6.80

ft QA

fi Q*

7 AA

7

AA

6.85

6.85

6.95

6.80

6.80

6.80

6.70

6.70

6.70

July.

6.75

6.70

6.70

6.70

6.85

6.95

7.25 fi n

7 08

Q -to

7.40

8.70

7.55

7.30

6.88

8.05

6.82

6.75

6.75

6.85

6.75

6.75

6.85

6.70

6.95

6.75

6.60

6.65

6.75

6.70

Aug.

6.60

6.58

6.50

6.55

6.80

6.95

7.05

7.20

7.10

6.65

6.80

6.75

6.95

8.75

7.20

6.80

6.65

6.60

6.60

6.60

6.90

7.05

6.85

6.80

6.68

6.70

7.80

7.65

7.65

8.15

7.95

Sept.

7 in

7.30

7.20

6.90

6.75

8.80

7.35

6.90

6.90

6.70

6.70

6.68

6.50

6.42

6.50

6.50

6.70

6.58

6.50

6.50

6.55

6.85

6.65

6.62

6.55

6.50

6.50

6.65

6.70

6.70

Oct.

6.85

6.80

7.30

6.65

6.80

6.75

6.75

6.82

6.85

7 00

6.70

6.70

6.80

6.80

6.70

6.85

7.22

7 05

7.38

7.40

8.05

7.30

7.10

6.80

6.85

8.70

7.20

7.20

6.90

7.00

7.15

Nov.

6.80

6.60

6.70

6.65

6.65

6.60

6.70

7.80

8.30

R on

6.75

6.60

6.60

6.60

6.85

6.75

6.70

6.75

7.05

6.85

8.30

8.35

8.00

6.95

6.75

6.70

6.65

6.70

8.15

8.30

Dec.

8.55

10.05

11.35

8.35

7.20

7.05

6.85

6.95

6.95

6.70

6.65

6.60

6.70

6.65

6.70

6.85

6.70

6.70

6.75

7.05

6.95

7.05

7.70

8.50

8.25

8.00

6.90

6.85

6.70

6.70

6.70

Discharge measurements of West Channel of Wainiha River near Wainiha, Kauai, in 1912.

Date.

Mar. 19

24

Aug. 23

Hydrographer.

W.V. Hardy.............................................................

.....do............ ........................................................

Gage 

height.

Feet. 

5.60

6.55

5.74

Discharge.

Sec.-ft. 

143

578

162
ISLAND OF KAUAI. 97

!, in feet, of West Channel of Wainiha River near Wainiha, JSxata^forlSl^. 

[Kauai Electric Co., observer.]

Day.

1.. .............

2.. .............

8...............

4...............

t... ............

................

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23

24................

25...............

26...............

27...............

28...............

20

30............... 

81...............

Jan.

£ 4f>

5.50

5.60

5.50

5.60

5.50

5.50

5. 70

5.60

5.55

5.40

5.60

5.70

5.60

5.50

5.40

5.40

5 40

5.40

5.40

5.40

5.40

5.45

5.70

5.55

5.45

5.60

5.50

5.50

5.55 

5.60

Feb.

5.45

5.75

e on

6.75

5.60

5.50

5.50

5.55

5.60

5.60

5.65

5.55

5.55

5.55

5.55

5.50

5.50

5.65

5.60

6.65

6.95

6.10

6.20

6.10

5.90

5.85

5.95

5.75

5.80

Mar.

6.20

5.95

6.15

5 90

6.90

6.15

5.90

6.00

6.35

6.75

« on

6.30

6.00

5.90

5.75

5.75

5.75

6.65

5.56

6.95

6.00

5.75

5.65

5 90

6.55

6.95

5.80

5 90

5.80

5.80 

5.85

Apr.

6.95

5.80

5.65

5 90

6.00

6.30

6.55

6.70

6.65

6.15

5.90

6.00

5.85

S on

5.95

5.85

6.20

5.95

5.65

6.65

6.55

5.55

5.65

5.60

5.65

5.75

5.90

5.70

5.75

5.65

May.

5.60

5.60

5.62

5.65

5.75

5.60

5.60

5.70

5.60

5.50

5.50

6.50

5.85

6.25

6.00

6.65

6.65

5.55

5.60

5.60

5.65

6.75

5.65

5.75

5.65

6.60

5.80

6.30

6.00

5.60 

5.60

June.

6. 60

6.55

5.50

5.60

5.55

5.50

6.50

5.50

5.60

5.50

5.50

5.50

5.60

5.50

5.55

5.55

5.50

6.70

5.75

6.70

6.65

5.55

5.65

5.70

5.55

5.50

5.58

5.50

5.50

5.50

July.

6.55

5.50

5.50

6.50

5.60

5.70

5.80

5.65

5.70

6.15

6.05

5.70

6.15

K QK

5.85

5.70

6.06

5.65

5.60

5.65

5.60

5.60

5.60

5.65

5.60

5.75

6.60

6.50

5.55

5.55 

5.50

Aug.

5.50-

5.50

5.50

5.40

5.70

6.75

5.80

6.95

6.90

5.60

5.65

5.55

5.70

6.45

6.00

6.70

5.55

6.50

6.50

5.50

5.70

6.80

5.70

5.65

5.70

5.60

6.30

S on

5.75

6.40 

6.00

Sept.

6.10

6.06

5.95

5.80

5.65

6.55

5.95

5.80

5.7

5.55

5.6

5.6

5.45

5 40

5.50

6.50

5.60

5.5

5.5

5.5

5.5

5.70

5.52

5.45

5 45

5.40

5.40

6.60

5.60

5.50

Oct.

5.68

5.55

6.00

5.50

5.65

5.62

5.56

5.60

5.68

5.70

5.50

5.55

6.55

6.55

6.50

5.60

5.85

5.70

6.10

6.15

6.35

5.95

5.80

5.65

5.70

R 4ft

5.85

5.95

5.70

5.70 

5.85

Nov.

5.65

5.S5

5. 60

5.55

5.50

5.50

5.55

5.95

6.30

5.85

6.65

5.50

5.50

5.50

5.85

5.70

6.60

5.76

5.95

5.75

6.25

6.25

5.90

6.70

5.65

6.60

5.50

5.50

6.05

6.20

Dec.

6.80

6.85

7.70

6.30

5.90

5.95

5.75

6.80

5.80

5.60

6.60

6.50

5.60

6.60

5.60

5.75

5.60

6.60

6.78

6.20

6.80

6.95

6.35

6.30

6.05

5.85

6.62

5.60

5.60

5.60 

5.60

WAINIHA CANAL AT INTAKE, NEAR WAINIHA, KAtTAI.

Location. At 700-foot elevation, just below the point of divereion and about 4 miles

above the Kauai Electric Co.'s power house. 

Records available. August 1, 1910, to December 31,1912. 

Channel. Probably permanent. 

Cooperation. Gage heights furnished by Kauai Electric Co.

! The following discharge measurement was made by W. V. Hardy: 

I March 20,1912: Gage height, 4.14 feet; discharge, £0.0 eeeond-feet.

Daily gage height, in feet, of Wainiha canal at intake, near Wainiha, Kauai, for 1912.

[Kauai Electric Co., observer.)

Day.

1.... ...........

2...............

3...............

4...............

*..... ..........

6...............

.7...............

................

t... ............

10...............

11...............

12...............

13...............

14...............

15...............

Jan.

1.50

4.10

4.35

4.10

Feb.

3.50

3.50

3.50

A. nn

JL nn

2.50

3 An

3.40

3 An

3 ifl

3.90

3.50

3.40

3.40

3.30

Mar.

400

A nn

4.70

A 7A

4.70

4.70

4.70

4.70

A ?n

4.70

4.70

4.70

4.70

470

470

Apr.

4.70

4.70

460

4.55

470

470

470

470

470

470

470

470

470

470

470

May.

3.55

3.55

470

470

465

415

410

4.70

410

3.85

3.60

3.50

3.75

470

470

June.

4.05

4.06

8.70

3 on

3.70

3.60

3.45

3.40

445

410

8.60

S on

435

470

450

July.

3.75

3.75

3.50

3.75

420

435

470

3.90

3.65

470

470

470

450

470

470

Aug.

3.65

3 «ifi

3.35

3.30

420

440

420

470

4.70

440

460

450

460

470

4.70

Sept.

470

470

470

4.70

2.55

470

470

4.70

470

3.95

3.80

3.90

3.65

3.55

3.45

Oct.

420

3.70

450

3.65

415

3.65

420

460

4.40

440

400

3.60

3.40

3.65

3.50

Nov.

460

405

440

415

460

440

435

430

3.80

470

435

400

3.75

3.55

410

Dec.

470

470

0.00

0.00

0.00

1.50

1.60

2.60

450

450

410

3.70

3.60

3.60

3.90

14694° WSP 336 1
98 WATER RESOURCES OF HAWAII, 1912.

Daily gag« height, in feet, of Wainiha canal at intake near Wainiha, Kauai,for 1912 

Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan. Feb.

3 in

3.30

3.30

3.40

3.30

4 00

A. nn

4.00 A. nn

4.00

4 00

A. nn

A on

4 00

Mar.

4.70

2.50

2.80 4 00

4.00

A ftft

A 91

4.00

4 50

4.60

4.70

4 70

4.70

4.70

4 70

470

Apr.

4.70

4.70

A 7ft

4 70

4 60

4 45

4 45

4.40

4 20

A An

4.70

A An

4 Art

S on

3.65

May.

4.70

4.50

4.10

3

QC

4.35

4 An

4 70

4.70

4 70

4.65

A CA

4.70

4.60

3.50 4 70

4.30

June.

4 60

4.00

4.80

4.70

4.35

4.70

4.40

4.50

4.70

4.25

4.00

4.15

3.70

3.45

3.40

July.

4.70

4.70

4.50

4.00

3 90

4.20

4.50

4.50

4.70

4.40

A. 3ft

3.90

3.80

4 00

4.40

3.80

Aug.

4.60

4.10

3.80

3.60

3.55

4.70

4.50

4.40

4.50

4.20

4 20

4.70

4.70

4.70

4.70

4.70

Sept.

4.05

4.13

3.50

3.50

3.45

8.75

4.10

3.50

3.20

3.20

3.20

3.20

3.80

4.15

4.10

Oct.

4.00

4.10

4.50

4.70

4.70

4.70

4.70

4.70

4.35

4.40

4.70

4.70

4.70

4 60

4.60

4.70

NOV.

4.40

3.90

4.40

4.70

4.65

4.70

4.70

4.70

4.70

470

8.80

3.65

3.55

4.70

4.70

Dec.

4.10

3.50

3.40

3.40

470

4.50

4.70

4.70

4.70

2.00

4.70

0.00

0.00

1.60

4.00

4.00

NOTE. Power plant was partly closed for repairs Jan. 5-31.

MISCELLANEOUS MEASUREMENTS ON KAUAI IN 1912. 

[By W. V. Hardy.]

Date.

Jan. 27

29

Mar. 20

Feb. 11

12

12

12

12

12

12

Jan. 19

20

20

21

Feb. 11

11

11

Apr. 4

Dec. 13

May 5

July 31

Jan. 22

31

Feb. 19

19

Aug. 21

21

Feb. 12

Nov. 18

Feb. 28

Jan. 22

31

Feb. 12

22

Feb. 11

11

11

11

11

July 3

Aug. 7

Oct. 7

Stream.

Wainiha canal at Tunnel No. 18. near Wainiha ...........................

.....do...................................................................

.....do....................................................................

Hakenanahu Stream above county road, LIhue. ..........................

Kilauea River below confluence, Kilauea. ................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet. 

3.40

3.70

4.14

ollf

Discharge.

Sec,-feet. 

67.3

77.4

91.4

6.07

2.11

.20

8.33

3.72

1.77

.75

9.20

8.83

3.85

1.17

1.64

.10

.26

4.07

3.43

4.79

15.00

.28

1.06

21.3

1.84

638.4

628.3

1.96

.69

1.81

1.27

2.11

1.46

.75

1.27

9,780.00

.27

2.25

.08

.13

.30

.80

.48

.50

a Head in inches on 12-foot sharp-crested weir. & River fluctuating.
ISLAND OF KAUAI. 99

PUMPED WATER ON KAUAI.

Several small pumping plants on Kauai are used to pump underground water for irrigation at very dry times or to lift fresh water 

to higher elevations. At only one place, however, is pumped water 

from underground sources depended upon as a regular irrigation 

supply.

The McBryde Sugar Co. has five electric plants with seven pumps 

and two steam plants with two pumps which are used for pumping 

underground water from Hanapepe and Lawai valleys.

During 1912 the quantity of water pumped daily by this company 

averaged 25,600,000 gallons, or 39.6 second-feet. A large part of 

this water is lifted more than 400 feet.

DITCH SEEPAGE AND LOSSES ON KAUAI.

The following investigations of ditch seepage and losses have been 

made during the year at the request of plantation and power company

officials:

Ditch and canal loss or gain, 1912.

Walnlha canal (Kauai Electric Co.).

Bate and hour.

Jan. 27:

11.40a.m..

Jan. 29: 

11.10a.m..

3.15p.m...

4.15p.m...

Location.

3,865 feet above forebay.. . .....................................

Discharge.

Second-feet. 

67.3

66.6

64.3

63.2

62.6

60.2

77.4

75.8

Loss or 

gain.

Second-feet.

-0.7

-2.3

-1.1

-2.4

-1.6

Stone Dam ditch (near Kilauea).

Jan. 19:

4p.m...... Added to above by inflow from mill supply ditch 3,500 feet 

below Stone Dam intake.

Total....................................................

3.2

2,7

5.9

4.6 -1.3

Waiuli ditch (near Kilauea).

Jan. 20: 

1p.m......

2 p. m. .....

2.30p.m...

3p.m...... 

4p.m......

300 feet oelow reservoir. .......................................

Discharge of lateral ditch diverting at point 4,500 feet below 

reservoir.

Without loss or gain there should be remaining in ditch below 

diversior. 

Discharge at wasteway. . . . . ...................................

Without loss or gain there should be remaining in ditch below 

wasteway. 

Below wasteway at point about 16,000 feet below reservoir. ....

12.1

4.2

7.9 

0.7

7.2

8.4 

6.6

+1.2 -1.8
100 WATEE EESOURCES OF HAWAII, 1912.

Ditch and canal loss or gain, 1912 Continued. 

Waiuli Intake ditch (near Kilauea).

Date and hour.

Jan. 21: 

8a.m......

9.30a.m...

Location.

60 feet below headgate

Surface drainage into ditch between points of measurements. . 

Total..... . .___------------.---.--_._.---....

About 7,000 feet below h

Discharge.

Second-feet. 

3.7 

.2

3.9 

3.6

Loss or 

gain.

Second-feet. 

-0.3

Eanapepe ditch (near Eleele).

Mar. 6: 

10a.m.....

Mar. 7: 

4p.m......

4.50p.m...

Flume No. 6, $ mile below intake. .............................

Surface drainage added to canal between flumes No. 6 and 

No. 25.

Total....................................................

Flume No. 35.. .............................. 1.. ...............

Flume No. 36, 2,900 feet below flume No. 35. .................

43.6

.6

44.2

39.4

44.1

42.1

-4.8

-2.C

NOTE. These measurements were made to determine leakage at flume No. 36.

ISLAND OP OAHU.

PALOLO STREAM BASIN. 

WAIOKAO STREAM AT 900-FOOT ELEVATION 1 NEAR HONOLULU, OAHTT.

Location. About 3 miles above Pukele in the Palolo Valley and about 9 miles from 

Honolulu.

Records available. October 10,1911, to December 31,1912.

Gage. Watson weekly clock register above 3-foot sharp-crested weir; datum uncertain on account of leaks under weir.

Channel. One channel at all stages; shifting.

Discharge measurements. By wading.

Diversions. None above station; proposed to divert all of low-water discharge by 

pipe line for Honolulu water supply in 1913.

Accuracy. Kecords poor, owing to uncertainty regarding leakage around and under 

the weir.

Discharge measurements of Waiomao Stream at 900-foot elevation, near Honolulu, Oahu,

in 1912.

Date.

May 15 

21

21 

21 

21

Hydrographer.

Pierce and Hardy. . W.V. Hardy......

.....do............. 

.....do............. 

.....do.............

Gage 

height.

Feet. 

0.01 

.34

.30 

.25 

.20

Discharge.

Sec.-ft. 

0.39

2.87

2.70 

2.09 

1.64

Date.

June 17 

July 29

Oct. 4 

Nov. 25 

Pec. 20

Hydrographer.

W. B. Hardy...... 

C.H. Pierce.. ......

G. K. Larrison..... 

Larrison and Dort. . 

G. K. Larrison.....

Gage 

height.

Feet. 

0.11 

.07

.07 

.22 

.24

Discharge.

Sec.-ft. 

0.82 

.44

o.42 

61.42 

1.38

a Discharge of stream proper, 0.37 second-foot; small diversion immediately above station estimated 

at 0.05; total discharge 0.42. 

& Small loss through rocks at edge of measuring section.

1950-foot elevation in Water-Supply Paper 318, p. 149.
ISLAND OF OAHU.

Daily gage "height, in feet, of Waiomao Stream at 900-foot elevation, near Honolulu, Odhu,

for 1912. 

[Ramon Suvaco, observer.]

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10............... 

11.... .. .........

12............... 

13...............

14...............

15...............

16............... 

17...............

18...............

19

20..............:

21...............

22...............

23...............

24...............

25

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.30

.17

.17 

.15

.14 

.26

.35

.12

.......

Feb.

0.10

.14 

.16

.12 

.15

.11

.10

.10 

.09

.09

.09

.09

.14

.18

.90

.57

.34

.......

Mar.

0.14

.13

.12

.76

.88

.52 

.68

.42

.28

.44 

.35

.26

.22

.19

.17

.14

.12

.11

.13

.11

.10

.10

.11

.11

.10

Apr.

0.12

.10

.10

.13

.18

.12

.11

.10

.14

.16 

.24

.18 

.17

.16

.23

.24

.17

.13

.12

.11

.12

.11

.10

.09

.09

.07

.07

.06

.06

.05

May.

0.05

.05

.05

.05

.10

.10

.10

.09

.09

.09 

.08

.09 

.10

.13

.12

.12

.12

.12

.15

.10

.17

.14

.11

.32

.16

.25

.50

.35

.24

.19

.16

June.

0.14

.14

.12

.25

.18

.14

.14

.13

.13

.......

.12 

.11

.12

.11

.10

.09

.09

.09

.09

.09

.09

.09

.09

.09

.09

July.

0.08

.08

.08

.08

.12

.11

.10

.11

.32

.55 

.35

.24

.22

.19

.18

.19 

.18

.15

.14

.13

.12

.12

.11

.10

.10

.09

.08

.08

.07

.07

.07

Aug.

0.07

.10

.22

.32

.20

.25

.14 

.11

.23

.22

.50

.27

.19

.12

.12

.12

.11

.10

.09

.08

.23

.30

.19

.16

.23

.19

Sept.

0.14

.13

.11

.10

.10

.10

.10

.09

.08

.08 

.07

.07 

.06

.06

.06

.06 

.06

.06

.06

.06

.06

.06

.06

.06

.06

.07

.08

.09

.09

.10

Oct.

0.09

.08

.08

.08

.07

.06

.......

19*

.......

.10

.09

.13

.10

.08 -.26

.58

.33

.27

.19

.15

.14

Nov.

0.11

.09

.07

.08

.07

.06

.06

.13

.18

.10 

.08

.07 

.06

.06

.30

.12 

.10

.09

.09

.08

.27

.28

.37

.22

.19

.15

.14

.48

.50

.42

Dec.

0.62

4Q

.85

.45

«m

.25

.29

9ft

.26

.18 

.14

.12

IS

.12

.12

.10

.09

.12

.40

25

.23

.24

.18

.1511

.12

.09

.09

.08

no

.10

Discharge, in second-feet, of Waiomao Stream at 900-foot elevation, near Honolulu, Oahu,

for 1912.

Day.

1. ..............

2...............

4...............

5...............

6...............

7...............

8...............

9

10...............

11...............

12...............

13...............

14...............

15........ ......

16...............

17...............

18...............

19...............

20. .

21...............

22.

23...............

24...............

25...............

23

27...............

28...............

29...............

30...............

31...............

Jan.

1.64

.70

.70

.58

.52

1.32

2.07

.42

.......

Feb.

0.40

.40

.42

.42

.44

.44

.46

.46

.48

.48

.50

.50

.52

.76

8.53

4.30

1.98

.......

Mar.

0.52

.47

.42

6.62

8.25

3.75

5.60

2.72

1.48

2.92

2.07

1.32

1.03

.90

.80

.60

.50

.45

.55

.45

.40

.40

.45

.45

.40

Apr.

0.50

.40

.55

.85

.50

.45

.40

.60

.75

1.17

.76

.70

.64

1.10

1.17

.80

.55

.50

.45

.50

.45

.40

.40

.40

.40

\40

.40

.4ft

.40

May.

0.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.55

.50

.50

.50

.50

.65

.66

1.29

1.02

.75

2.84

1.20

2.09

4.88

3.17

1.99

1.49

1.20

June.

1.02

1.02

.84

2.09

1.39

1.02

1.02

.93

.93

.93

. .93

.93

.84

.84

.84

.84

.75

.84

.75

.66

.58

.58

.58

.58

.58

.58

.58

.58

.58

.58

July.

0.50

.50

.50

.50

.84

.75

.66

.75

2.84

5.48

3.17

1.99

1.79

1.49

1.39

1.49

1.39

1.11

1.02

,93

.84

.84

.75

.66

.66

.58

.50

.50

.43

.43

.43

Aug.

0.43

1.79

2.84

1.59

1.69

1.79

1.89

1.99

1.99

2.09

1.02

.75

1.89

1.79

4.88

2.29

1.49

.84

.84

.84

.75

.66

.58

.50

1.89

2.62

1.49

1.20

1.89

1.49

Sept.

1.02

.75

.66

.66

.66

.66

.58

.50

.50

.43

.43

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.36

.43

.50

.58

.58

.66

Oct.

0.58

.50

.50

.50

.43

.36

.50

.66

.84

1.02

1.20

1.39

1.49

1.39

.93

.50

.50

.50

.66

.66

.58

.93

.66

.50

2.19

5.84

2.93

2.29

1.47

1.09

.96

Nov.

0.70

.54

.40

.45

.35

.35

.35

.77

1.23

.53

.40

.40

.40

.40

2.39

.64

.49

.41

.41

.40

1.99

2.09

3.07

1.39

1.11

.75

.67

4.16

4.40

3.47

Dec.

5.50

4.28

8.20

3.72

2 14

1.57 i afl

2.03

2.67

.89

.56

.41

.89

.41

.41

.35

.35

.41

3.10

1.51

1.23

1.33

.82

.58

.43

.35

.35

.35

.35

.35

.35
102 WATER RESOURCES OF HAWAII, 1912.

Monthly discharge of Waiomao Stream at 900-foot elevation near Honolulu, Oahu,for 1912.

Month.

January ...........................................

February. .........................................

March .............................................

April..............................................

May...............................................

June...............................................

July...............................................

The period. .................................

Discharge in second-feet.

Maximum.

1.17

4.88 

2.09 

5.48 

4.88 

1.02 

5.84 

4.40 

5.50

Minimum.

0.40 

.40 

.58 

.43 

.43 

.36 

.36 

.35 

.35

Mean.

o0.99 

61.26 

el. 74 

.58 

1.00 

.84 

1.15 

1.56 

.51 

1.11 

1.17 

1.52

<*1.12

Run-off 

(total in 

acre-feet).

ol5.7 

642.5 

«86.2 

34.5 

61.5 

50.0 

70.7 

95.9 

30.3 

68.2 

69.6 

93.5

<*719

Accuracy.

D. 

D. 

D. 

D. 

D. 

C. 

B. 

C. 

C. 

D. 

D. 

D.

oEight days. 

6 Seventeen days.

c Twenty-five days.

d Three hundred twenty-five days.

WAIOMAO STREAM ABOVE PUKELE STREAM, NEAR HONOLULU, OAHU.

Location. At Pukele highway bridge in Palolo Valley, about 6 miles east of Honolulu.

Records available. April 8 to December 29, 1911, and May 15 to December 31, 

1912.

Drainage area. Not measured.

Gage. Vertical staff; read once daily, about 9 a. m.; datum unchanged.

Channel. One channel at all stages; shifting.

Discharge measurements. Low and medium stage measurements made by 

wading; flood measurements made from bridge.

Diversions. None above station.

Accuracy. Records poor.

Discharge measurements of Waiomao Stream above Pukele Stream, near Honolulu, Oahu,

in 1912.

Bate.

May 15 

21 

June 17 

July 28 

Sept. 17

Hydrographer.

Pierce and Hardy.. 

W.V. Hardy...... 

.....do.............

C.H. Pierce........

G. K. Larrison.....

Gage

Feet. 

0.74 

.93

.82 

.88 

.82

Discharge.

Sec.-ft. 

0.19 

1.01 

.27 

.32 

.10

Date.

Oct. 15 

Nov. 26 .

Dec. 20

Hydrographer.-

O. K. Larrison..... 

Larrison, Dort and 

Bailey........... 

G. K. Larrison.....

Gage 

height.

Feet. 

0.95

1.03 

1.13

Discharge.

Sec.-ft. 

0.42

.81 

1.37

Daily gage height, in feet, of Waiomao Stream above Pukele Stream, near Honolulu,

Oahu, for 1912.

Day.

1... ..'...............................

2....................................

3....................................

4....................................

5....................................

6....................................

7....................................

8....................................

9....................................

10....................................

May. June.

0.85

.83

.82

.81

.80

.84

.82

.81

.80

.81

July.

0.87

.85

.88

.87

.86

.87

.89

.96

.96

1.20

Aug.

0.98

.98

.96

.95

.94

.93

.92

.92

.92

.91

Sept.

0.85

.85

.85

.87

.81

.85

.86

.86

.90

.88

Oct.

0.98

.90

.92

.90

.90

.91

.92

.99

.98

.98

Nov.

0.98

.96

.91

.91

.91

.91

.92

.92

LOO

Dec.

1.52

1.35

1.23

1.18

1.16

1.13

1.11

1.09

1.09

1.09
ISLAND OF OAHU. 103

Daily gage height, in feet, of Waiomao Stream above Pukele Stream, near Honolulu,

Oahu, for 1912 Continued.

Day.

U............. .......................

12....................................

13....................................

14....................................

15....................................

16....................................

17....................................

18..................................;.

19....................................

20..... ......... .......

21..... ...............................

22....................................

23....................................

24....................................

25........... . .

26....................................

27....................................

28....................................

29....................................

30....................................

31...... .

May.

0.74

.71

.71

.70

.79

.82

.82

.83

.85

1.00

1.15

1.18

1.19

2.00

1.98

1.50

1.20

June.

0.83

.82

.80

.80

.81

.81

.80

.89

.81

.80

.79

.79

.79

.83

.86

.84

.86

.86

.84

.83

July.

1.10

LOO

.96

.99

1.00

1.00

1.00

1.00

.99

.99

.99

.99

.98

.98

.98

.98

.97

.96

.95

.93

.90

Aug.

ft 08

.94

.92

.92

.91

.95

1.13

1.00

.95

.95

.95

.95

.93

.88

.82

.81

1.01

.93

.97

1.20

.91

Sept.

0.86

.86

.83

.85

.87

.87

.86

.86

.86

.86

.87

.88

.87

.86

.82

.81

.85

.90

.92

1.02

Oct.

1.03

1 00

1 fU.

1.02

.97

.90

.90

.90

.95

.98

.98

.96

.95

.95

1.12

.06

.06

.08

.06

.04

1.00

Nov.

ft 08

95

.93

.92

.98

2.13

1.05

.98

.95

.98

1.00

1.03

1.00

1.08

1.07

1.05

LOS

LOO

1.36

1.29

Dec.

1.09

1.09

1.09

1.09

1.09

1.09

1 03

1.12

1.15

1.13

1.11

1.00

1.09

1.08

1.07

1.06

1.05

1.05

1.05

1.05

1.05

Discharge, in second-feet, of Waiomao Stream above Pukele Stream, near Honolulu, Oahu,

for 1912.

Day.

1......... ...........................

2....................................

3....................................

4....................................

5....................................

6....................................

7....................................

8....................................

9....................................

10....................................

11....................................

12....................................

13....................................

14....................................

15............................. ... .

16....................................

17....................................

18....................................

19....................................

20....................................

21..... ..............................

22....................................

23....................................

24....................................

25. .....

SO.......... ..........................

2f....... ....... ......................

28.....................................

29....................................

30....................................

31....................................

May.

O ld

.11

.11

.10

.33

.44

.37

.37

.48

1.62

3.81

4.34

A KO

*>A on

24.40

n an

4.70

June.

0.48

.37

.31

.26

.20

.43

.31

.26

.20

.26

.37

.31

.20

.20

.26

.26

.18

.66

.21

. .18

.13

.13

.13

.31

.45

.33

45

.45

.33

.28

July.

0.50

.38

.51

.45

.40

.45

.57

1.04

1.04

4.20

2.42

1.30

.96

1.20

1.30

1.30

1.30

1.30

1.12

1.12

1.12

1.12

1.05

1.05

1.05

1.05

97

on

.77

.63

.45

Aug.

1.00

1.00

.84

.77

.70

.63

.57

.57

.57

.45

1.00

.70

.57

.57

.51

.77

2.60

1.16

.77

.77

.77

.77

.63

.35

.10

.09

1.24

.63

Q9

q 7A

.51

Sept.

0.20

.20

.20

.30

.09

.20

.25

.25

.45

.35

.25

.25

.12

.20

.30

.30

.20

.20

.20

.20

.26

.30

.22is

no

.08 to

*>7

.41

1.08

Oct.

0.80

.31

.41

.31

.27

.30

.37

.79

.72

.72

1.02

.81

1.11

.95

.61

.13

.13

.13

.36

.53

.53

.42

.36

.36

L67

1.10

1.10

1 OS

1.10

Q4

.67

Nov.

0.53

.42

.17

.17

.17

.21

.21

.26

.26

.72

.59

.40

.30

.26

.59

28.00

1.10

.59

.40

.59

.72

.93

.72

1 tfi

1.28

1.10

70

.58

5.30

Q QA

Dec.

8.90

5.00

2.90

2.21

1.8S

1.56

.39

.21

.21

.21

.21

.21

.11

.11

1.11

1.11

1.06

L30

L70

L50

1.21

.41

1.04

.96

.89

.81

.74

.74

.74

.74

.74
104 WATER RESOURCES OF HAWAII, 1912.

Monthly discharge of Waiomao Stream above Pukele Stream, near Honolulu,

for 1912.

Month.

May 15-31. ........................................

June...............................................

July...............................................

October . ..........................................

The period...... ............................

Discharge in second-feet.

Maximum.

24.9 

.66 

4.20 

3.70 

1.08 

1.67 

28.0 

8.90

28.0

Minimum.

0.10 

.13 

.38 

.09 

.08 

.13 

.17 

.41

.08

Mean.

5.16 

.30 

1.07 

.85 

.26 

.66 

1.75 

1.53

1.22

Run-off 

(total in 

acre-feet).

164.0 

17.8 

65.8 

52.3 

15.5 

40.6 

104.0 

97.2

557.0

Accuracy.

D. 

D. 

D. 

C. 

D. 

D. 

D. 

D.

PTTEELE STREAM AT MAHOE SPRINGS, NEAR HONOLULU, OAHTT.

Location. About 500 feet above Pukele in upper Palolo Valley and about 6J miles 

northeast of Honolulu.

Becords available. April 16 to December 31,1912.

Gage. Staff; read once daily, about 10 a. m.

Channel. One channel at all stages; shifting.

Discharge measurements. Made by wading.

Diversions. None above station; two small irrigation ditches divert water immediately below the station.

Accuracy. Records poor.

Discharge measurements of Pukele Stream at Mahoe Springs, near Honolulu, Oahu, in

Date.

Apr. 16

May 15 

15 

21 

21

June 17

Hydrographer,

.....do............. 

W.V. Hardy...... 

.....do............. 

.....do.............

.....do.............

Gage 

height.

Feet. 

0.73

.62 

.62 

.61 

.60

.59

Discharge.

8ec.-ft. 

1.14

.55 

.45 

.40 

40

.44

Date.

July 29

Sept. 19 

Oct. 15 

Nov. 26

Dec. 24

Hydrographer.

G.K. Larrison..... 

.....do............. 

Larrison, Dort and

G. K!. Larrison. ....

Gage 

height.

Feet. 

0.56

.57 

.64

.79

.78

Discharge.

8ec.-ft. 

0.37

.31 

.36

.87

.92

Daily gage height, in feet, of Pukele Stream at Mahoe Springs, near Honolulu, Oahu, for

1912. 

[Sam Kepano, observer.]

Day.

1. ....................... .

2...........................

3...........................

4...........................

5...........................

6...........................

7...........................

^.. .........................

9...........................

10...........................

11...........................

12...........................

13...........................

14...........................

15...........................

16...........................

17...........................

18...........................

19...........................

20...........................

Apr.

0.73

.73

.74

.73

.73

May.

0.68

.68

.67

.66

.66

.66

.65

.65

.65

.64

64

.64

.64

.63

.62

.62

.61

.61

.60

.61

June.

0.76

.75

.74

.73

.75

71

.70

.68

.64

.63

.62

.61

.60

.60

.59

.59

.59

.53

.57

July.

0.56

.56

.56

.56

.56

.56

.56

.57

.57

.95

fiQ

.67

.63

.62

60

.60

.59

.60

.60

.60

Aug.

0.58

.58

.58

' .60

.59

.62

.62

.61

.61

.60

.60

.59

<iO

.86

.73

.68

.57

.59

.61

.60

Sept.

0.45

.45

.45

.47

.47

.48

.63

.63

.62

.61

.60

.59

.58

.53

.50

.48

.60

.60

.60

.63

Oct.

0.52

.50

.58

.57

.57

.59

.59

.60

.60

.60

.80

.66

.66

.66

.60

.60

.59

.58

.65

Nov.

0.70

.70

.71

.71

.71

.71

.71

.72

.72

.71

.70

.69

.69

.69

.75

.83

.79

.75

.70

.78

Dec.

1.28

1.12

1.03

1.03

1.02

1.00

.98

on

.90

.90

.90

.90

.89

.89

.89

.88

.88

R7

.83

.80
ISLAND OF OAHU. 105

Daily gage height, in feet, ofPukeh Stream at Mahoe Springs, near Honolulu, Oahu, for

1912 Continued.

Day.

21...........................

22...........................

23...........................

24...........................

25

2ft...........................

27...........................

OS

29...........................

30........................... 11

Apr.

0.73

.73

.73

.73

.73

.72

.71

.70

.69

.68

May.

0.69

.69

.69

.70

.85

.89

1.11

1.15

1.13

1.00

98

June.

0.57

.57

.57

.57

.57

.56

.56

.56

.56

.56

July.

0.60

.60

.60

.60

.60

.59

.58

.57

.60

.60

60

Aug.

0.61

.60

.68

.62

.61

.60

.78

.68

.57

.50

40

Sept.

0.65

.68

.66

.65

.68

.70

.65

Oct.

0.65

.66

.68

.67

.80

.78

.80

.79

.75

.73

.70

Nov.

0.82

1.01

.95

.88

.83

.80

.80

.83

.89

1.00

Dec.

0.79

.79

.78

.77

.76

.75

.74

.74

.74

.75

.75

Daily discharge, in second-feet, ofPukele Stream at Mahoe Springs, near Honolulu, Oahu,

for 1912.

Day.

1. ..........................

2...........................

3...........................

4...........................

5...........................

6. ....... ...................

7...........................

8...........................

9...........................

10...........................

11...........................

12...........................

13...........................

14...........................

15...........................

18...........................

17...........................

18...........................

19...........................

20...........................

21...........................

22...........................

23...........................

24...........................

2&......... .

26................:..........

27...........................

28...........................

29...........................

30...........................

31...........................

Apr.

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.1

1.0

.9

.8

.8

May.

0.8

.8

.7

.6

.6

.6

.6

.6

.6

.5

.5

.5

.5

.5

.4

.4

.4

.4

.4

.4

.8

.8

.8

.9

2.6

3.2

6.5

7.1

7.3

5.4

5.0

June.

1.8

1.7

1.6

1.4

1.7

1.4

1.1

1.0

.7

.7

.6

.6

.5

.5

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

July.

0.4

.4

.4

.4

.4

.4

.4

.4

.4

4.6

1.0

.9

.6

.6

.5

.5

.4

.5

.5

.5

.5

.5

.5

.5

.5

.4

.4

.4

.5

.5

.5

Aug.

0.4

.4

.4

.5

.4

.6

.6

.5

.5

.5

.5

.4

.4

3.1

1.4

1.0

.4

.4

.5

.4

.5

.4

.9

.5

.5

.4

1.8

.8

.4

.3

.3

Sept.

0.3

.3

.3

.3

.3

.3

.5

.5

.5

.4

.4

.4

.3

.3

.3

.3

.4

.4

.4

.5

.6

.7

.6

.5

.7

.8

.7

.6

.6

.5

Oct.

0.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.4

.8

.4

.4

.4

.3

.3

.3

.3

.4

.4

.4

.5

.4

1.2

1.0

1.2

1.1

.8

.7

.5

Nov.

0.5

.5

.6

.6

.5

.5

.5

.6

.6

.6

.5

.4

.4

.4

.7

1.3

.9

.7

.4

.9

1.0

3.5

2.7

2.0

1.1

1.0

1.0

1.3

2.0

3.7

Dec.

8.0

5.6

4.2

4.2

3.8

3.8

3.4

2.2

2.2

2,2

2.2

2.2

2.1

2.1

2.1

1.9

1.9

1.8

1.4

1.1

1.0

1.0

.9

.8

.8

.7

.6

.6

.6

.7

.7

Monthly discharge of Pukele Stream at Mahoe Springs, near Honolulu, Oahu, for 1912.

Month.

April 16-30........................................

May................................... ...........

July...............................................

November ........................................

The period. .................................

Discharge in second-feet.

Maximum.

1.2 

7.3 

1.8 

4.6 

3.1 

.8 

1.2 

3.7 

8.0

8.0

Minimum.

0.8 

.4 

.4 

.4 

.3 

.3 

.3 

.4 

.6

.3

Mean.

1.11 

1.65 

.73 

.63 

.65 

.46 

.49 

1.05 

2.16

.99

Run-off 

(total in 

acre-feet).

66.0 

101.0 

43.4 

38.7 

40.0 

27.4 

30.1 

62.5 

133.0

542.0

Accuracy.

C. 

C. 

C. 

C. 

C. 

D. 

D. 

C. 

C.
106 WATER RESOURCES OF HAWAII, 1912.

MANOA STREAM BASIN. 

MANOA STREAM AT UPPER END OF VALLEY NEAR HONOLULU, OAHU.

Location. Below confluence of two-main branches in upper Manoa Valley, about 5

miles east of Honolulu.

Records available. November 7, 1910, to December 31, 1912. 

Gage. Vertical staff; read twice daily, about 6 a. m. and 5 p. m. 

Channel. One channel at all stages; shifting. 

Discharge measurements. By wading at low and medium stages up to a gage

height about 4 feet; above this stage from footbridge at gage. 

Diversions. Several small irrigation ditches divert from the branches of the stream

above the station. 

Accuracy. Records poor.

Discharge measurements of Manoa Stream at upper end of valley, near Honolulu, Oahu,

in 1912.

Bate.

1912. 

Tan. 12

Sept. 17

Oct. 30

Dec. 20

Hydrographer.

H. R. Schulz.............................................................

Gage 

height.

Feet. 

2.73

2.87

3.24

3.32

Diacharge.

Sec.-ft. 

1.95

1.43

5.19

7.89

Daily gage height, in feet, of Manoa Stream at upper end of valley, near Honolulu, Oahu,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15.. .-*.... .......

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.70

2.70

2.70

2.65

2.65

2.68

2.70

2.85

2.70

2.70

2.70

2.60

2.60

2.70

2.65

2.60

2.60

2.60

2.60

2.60

2.60

2.60

2.60

2.60

2.60

2.55

2.54

2.55

2.52

2.50

2.52

Feb.

2.52

2.52

2

ff,

2.55

9 ff,

9 US

2.58

2.60

2.55

2.62

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.55

2.70

2.60

3.60

3.10

3.00

2.85

2.80

2.70

2.70

Mar.

2.72

2.75

9 fil

2.60

2.60

9 fin

2.60

2.70

3.10

3.30

3.90

3.45

3.50

3.15

3.00

2.95

2.90

2.85

2.80

2.80

2.80

2.80

2.80

2.70

2.80

2.70

2.70

2.70

2.70

2.70

2.70

Apr.

2.68

2.68

9 fiH

2.70

2.75

2 80

9 Qf;

3.00

3.05

2.90

2.80

2.75

2.90

2.80 9 on

3.40

3.15

3.02

2. 90

2.85

2.80

2.80

2.80

2.78

o 7«

2.72

2.70

2.70

2.70

2.70

May.

2.70

2.70

9 7ft

2.70

2.75

2.65

2.60

2.60

2.60

2.60

2.60

2.60

2.60

2.65

2.60

2.60

2.60

2.60

2.60

2.60

2.65

2.60

2.60

3.00

2 7n

2.95

3.40

3.10

2.80

2.80

2.75

June.

2.70

2.70

2.70

2

1*1

2.70

2.68

2.65

2.70

2.66

2.65

2.65

2.65

2.68

2.68

2.68

2.65

2.68

2.70

2.70

2.65

2.65

2.65

2.65

2.65

2.65

2.65

2.65

2.72

2.72

2.70

July.

2.70

2.70

9 7fl

2.70

9 7A

9 7fl

2.70

2.70

3.15

3.30

3.00

2.80

2.80

3.85

2.70

2.70

2.75

2.70

2.70

2.70

2.70

2.70

2.70

2.70

2.70

2.65

2.65

2.65

2.70

2.70

9 7fi

Aug.

2.65

2.75

9 If,

2.75

2.80

2 sn

2.80

2.80

2.80

2.60

3.15

2.60

2.80

2.80

2.70

3.55

2.70

2.80

2.80

2.80.

2.80

2.80

2.80

2.80

2.80

3.25

3.20

3.00

2.60

3.20

3.00

Sept.

2.60

2.60

2.60

2.70

2.80

2.80

2.85

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.85

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.80

2.80

Oct.

2.80

2.80

2.85

2.82

2.80

9 Rft

2.62

2.60

2.95

2.82

2.95

3.15

3.05

3.10

3.00

2.80

2.60

2.60

2.60

2.80

2.60

3.20

3.00

3.00

3.10

3.80

3.50

3.40

3.10

3.10

3.15

Nov.

3.10

3.00

3.00

3.05

3.05

3.00

3.05

3.10

3.35

3 no

3.00

3.00

3.00

2.98

3.08

3.05

2.98

3.00

3.00

3.00

3.90

3.45

3.25

3.20

3.15

3.00

3.00

3.20

3.45

3.10

Dec.

3.80

3.80

4.65

3.45

3.35

3.25

3.30

3.30

3.30

3.25

3.20

3.10

3.10

3.10

3.10

3.10

3.50

3.50

3.45

3.30

3.35

3.30

3.30

3.30

3.10

3.05

3.00

3.00

3.00

3.00

3.00
ISLAND OF OAHU. 107

Daily discharge, in second-feet, of Manoa Stream at upper end of valley, near Honolulu,

Oahu, for 1912.

Day.

1...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20

21...............

22...............

23...............

24.. .............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.8

J.. o

1.8

1.5

1.5

1.7

1.8

3.0

1.8

1.8

1.8

1.2

1.2

1.8

1.5

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.2

1.0

.9

1.0

.8

.7

.8

Feb.

0.6

.8

.8

.8

.8

.9

1.0

.8

1.1

.8

.8

.8

.8

.8

.8

.8

.8

.8

.8

1.5

1.0

13.2

5.2

4.0

2.6

2.2

1.5

1.5

Mar.

1.5

1.7 

1.2

.8

.8

.8

.8

1.4

4.2

6.7

19.0

10.0

11.0

4.8

3.8

3.3

2.8

2.4

2.1

2.1

2.1

2.1

2.1

1.4

2.1

1.4

1.4

1.4

1.4

1.4

1.4

Apr.

1.2

1.0

1.3

1.6

1.8

3.1

3.5

4.0

2.6

1.8

1.6

2.6

1.8

2.6

8.9

5.3

3.7

2.6

2.2

1.8

1.8

1.8

1.7

1.6

1.4

1.3

1.3

1.3

1.3

May.

1.2

1.2

1.2

1.4

.7

.7

.7

.7

.7

.7

.7

.9

.7

.7

.7

.7

.7

.7

.7

.7

3.3

1.4

2.8

8.5

4.3

1.7

1.7

1.4

June.

1.0

1.0

1.3

1.0

.9

.8

1.0

.8

.8

.8

.8

.9

.9

.8

.9

1.0

1.0

.8

.8

.8

.8

.8

.8

.8

.8

1.1

1.1

1.0

July.

0.9

.9

.9

.9

.9

4

O

6.3

2.9

1.4

1.4

16.0

g

1.2

.9

.9

.9

.9

.9

.9

.7

.7

.7

.9

g

Aug.

0.7

1.1

1.1 i i

1.3

1.3

1.3

1.3

.5

4.2

.5

1.3

1.3

.8

10.0

.8

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

5.5

4.8

2.7

.5

4.8

9 7

Sept.

0.4

.4

.7

1.1

1.1

1.4

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.4

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

1.1

Oct.

1.1

1.1 

1.4

1.2

1.1

1.1

.5

.4

2.1

1.2

2.1

4.0

3.0

3.5

2.5

1.1

.4

.4

.4

1.1

.4

4.5

2.5

2.5

3.5

14.5

9.0

7.5

3.5

3.5

3.0

Nov.

3.5

6.O

2.5

3.0

3.0

2.5

3.0

3.5

6.8

2.5

2.5

2.5

2.5

2.3

3.3

3.0

2.3

2.5

2.5

2.5

16.5

8.2

5.2

4.5

4.0

2.5

2.5

4.5

8.2

3.5

Dec.

14.5

14.5 

35.0

10.0

8.2

6.8

7.5

7.5

7.5

6.8

6.2

4.9

4.9

4.9

4.9

4.9

11.0

11.0

10.0

7.5

8.2

7.5

7.5

7.5

4.9

4.3

3.7

3.7

3.7

3.7

3.7

NOTE. Daily discharge, Feb. 1 to Aug. 31, computed by indirect methods for shifting channels. 

Monthly discharge of Manoa Stream at upper end of valley, near Honolulu, Oahu, for 1912.

Month.

April..............................................

May...............................................

July...............................................

October...........................................

Discharge in second-feet.

Maximum.

3.0 

13.2 

19.0 

8.9 

8.5 

1.3 

16.0 

10.0 

1.4 

14.5 

16.5 

35.0

35.0

MfnltrtriTn,

0.7 

.6 

.8 

1.0 

.7 

.8 

.7 

.5 

.4 

.4 

2.3 

3.7

.4

Mean.

1.39 

1.68 

3.21 

2.32 

1.44 

.91 

1.77 

1.98 

1.04 

2.71 

3.94 

7.96

2.54

RtUH>ff 

(total in 

acre-feet).

85.6 

97.0 

197.0 

138.0 

88.3 

£4.0 

109.0 

122.0 

61.7 

167.0 

235.0 

490.0

1,840

Accuracy.

D. 

D. 

D. 

D. 

D. 

D. 

D. 

D. 

C. 

C. 

C. 

C.
108 WATER RESOURCES OP HAWAII, 1912.

MANOA STREAM At COLLEGE OF HAWAII, NEAR HONOLTJLTT.

Location. In ravine about half a mile southeast of College of Hawaii, and 3 miles

east of Honolulu. 

Records available. March 23, 1909, to November 24, 1910; November 1, 1912, to

December 31, 1912. ! 

Gage. Vertical staff; read twice daily, at 6.30 a. m. and 5. p. m.; weir destroyed by

flood November 24, 1910; several changes in datum previous to 1912. 

Channel. One channel for all stages; practically permanent. 

Discharge measurements. By wading. 

Diversions. One email irrigation ditch (maximum capacity about 1.5 second-feet),

diverts water at a few hundred feet above the gage. 

Accuracy. Eecord good. 

Cooperation. Maintained in cooperation with the College of Hawaii.

Discharge measurements of Manoa Stream at College of Hawaii, near Honolulu, Oo&it,

in 1912.

Date.

Nov. 23

Dec. 13

20

Hydrographer.

A. R. Keller.............................................

.....do...................................................

Width.

Feet. 

18.0

12.1

12.6

Area of 

section.

Sq.-ft. 

30.2

7.82

12.9

&,

Feet. 

2.28

1.07

1.41

Discharge.

Sec.-/t. 

43.8

2.19

7.23

NOTE. A ditch diverts water a few hundred feet above station. Discharge of ditch at time measurement was made=0.74; this gives total run-off for stream (7.23+0.74) 7.97 second-feet.

Daily gage height, in feet, of Manoa Stream at College of Hawaii, near Honolulu, Oahu,

for 1912.

Day.

1.. ............

2..............

3..............

4..............

5..............

6..............

7. .............

8..............

9..............

10..............

Nov.

1.06

1.00

1.10

.91

1.19

1.00

1.40

1.10

2.15

1.18

Dec.

2.30

2.35

3.75

2.15

1.98

1.88

1.80

1.60

1.40

1.40

Day.

12..............

10

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

1.25

1.30

1.00

.92

1.35

1.05

1.00

1.02

1,03

1.00

Dec.

1.20

1.00

1.15

1.15

1.00

.98

.95

.98

2.20

1.38

Day.

21..............

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

2.25

2.30

2.35

1.85

1.60

1.40

1.40

2.75

2.25

1.70

Dec.

1.90

3.25

2.25

3.65 i on

2.50

2.15

1.90

1.40

L40

L40

MANOA STREAM AT WAT AT. AT?. ROAD, NEAR HONOLULU, OAHTJ.

Location. At Waialae road bridge, Honolulu, Oahu.

Records available. November 5,1910, to February 6,1911, and June 15 to September 30, 1912, when station was discontinued.

Gage. Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; new datum established 

June 15, 1912.

Channel. One at all stages; practically permanent.

Discharge measurements. At low water made by wading; at flood stages from 

bridge.

Diversions. All low-water discharge diverted above station.

Accuracy. No discharge rating obtained for new datum.

The following discharge measurement was made by G. K. Larrison: 

September 18, 1912: Gage height, 3.18 feet; discharge, 0.
ISLAND OF OAHTJ. 109

Daily gage Jieight, in feet, of Manoa Stream at Waialae road, near Honolulu, Oahu,for

1912.

Day.

1. ..............

2. ..............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12. ..............

13...............

14...............

15...............

June.

3.40

July.

3.45

3.50

3.50

3.45

3.50

4.20

5.30

5.90

5.80

4.25

4.25

4.20

4.60

4.90

4.30

Aug.

3.40

3.40

3.40

3.45

3.50

3.60

3.60

3.55

3.40

3.40

3.40

3.95

3.90

3.90

4.40

Sept.

4.40

4.30

4.10

3.70

3.70

3.80

3.80

3.60

3.55

3.50

3.40

3.40

3.40

3.40

3.30

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

June.

3.50

3.40

3.40

3.40

3.40

3.40

3.45

3.50

- 3.65

3.60

3.55

3.55

3.45

3.45

3.45

July.

3.90

3.70

3.65

4.10

3.90

3.90

,4.05

4.00

3.45

3.40

3 40

3.40

3.40

3.95

3.40

3.40

Aug.

4.50

4.20

4 45

4.90

3.90

3.60

3.40

3.40

3.40

4.45

4 80

4 00

3.70

3.50

4.30

4.15

Sept.

3.20

3.25

3.20

3.15

3.10

3.10

3.30

3.40

3.35

3.28

3.20

3. 3D

3.60

3.30

3.10

NOTE. Station was abandoned, as records had little value; a better location was found at the College 

of Hawaii, about half a mile upstream, and a station was reestablished at that place. (See p. 108.)

PAUOA STREAM BELOW KAHUAWAI SPRING, NEAR HONOLULU, OAHTJ.

Location. Upper Pauoa Valley about 1 mile above Punchbowl and about 2.5 miles

northeast of Honolulu.

Records available. April 14, 1911, to December 31, 1912. 

Gage. October 17, 1911, to December 31, 1912, Watson weekly clock register; April

14 to October 16, 1911, staff gage. 

Channel. One channel at all stages. 

Discharge measurements. Between April 14 and October 16, 1911, cunseixtmeter measurements were made by wading; from October 17, 1911, to December

31, 1912, measurement was made by a 4-foot sharp-crested weir, which has ijewi

checked by meter measurements. 

Diversions. None above station. 

Accuracy. Records good.

The following discharge measurement was made by C. H. Pierce: 

August 25, 1912: Width, 1 foot; area of section, 0.73 square foot; gage height, 0.12 

foot; discharge, 0.57 second-foot.

Discharge, in second-feet, of Pauoa Stream below Kahuawai Spring, near Honolulu,

Oahu, for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

1&... ............

Jan.

1.97

1.87

1.77

1.77

1.66

1.57

1.66

2.19

2.19

1.87

1.87

1.87

1.87

1.87

1.77

Feb.

0.93

.93

.85

.77

.77

.77

.77

.70

.70

.85

.85

.85

.85

.85

.85

Mar.

1.10

1.02

1.02

1.02

.93

.93

.93

.93

1.87

2.19

11.00

5.14

3.89

2.30

1.87

Apr.

1.47

1.47

1.47

1.37

1.47

1.47

1.57

1.87

1.57

2.88

1.37

1.37

1.28

2.08

1.97

May.

1.37

1.37

1.37

1.37

2.30

1.37

1.37

1.37

1.47

1.47

1.47

1.28

1.19

1.37

1.37

June.

1.47

1.37

1.19

1.10

1.10

1.10

1.10

1.10

1.10

1.02

1.02

1.02

1.02

1.02

1.02

July.

1.10

1.66

2.08

1.37

1.10

1.19

1.02

.93

.77

.77

.77

.77

.77

.77

.77

Aug.

1.02

1.02

.93

.85

.77

.70

.70

.70

.70

.70

.93

.77

.70

.70

.77

Sept.

1.02

.93

.85

.77

.77

.77

.85

.85

.77

.77

.77

.77

.77

.77

.70

Oct.

1.02

2.53

3.00

1.57

1.37

1.10

1.02

1.10

1.10

1.10

1.02

.85

.93

.85

.85

Nov.

1.10

.93

.85

.85

.93

.93

4.85

3.63

3.37

1.77

1.19

1.10

1.02

.85

,85

Dec.

8.14

9.18

13.52

3.76

2.64

2.30

2.08

1.97

1.87

1.77

1.77

1.77

1.97

1.66

1.77
110 WATER RESOURCES OF HAWAII, 1912.

Discharge, in second-feet, of Pauoa Stream below Kahuawai Spring, near Honolulu, 

Oahu,for 1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

3Q.... ...........

31...............

Jan.

1.77

1.66

1.66

1.57

1.47

1.37

1.37

1.28

1.19 1 10

1.19

1.10

1.10

1.10

.93

03

Feb.

0.85

.85

.85

.85

.85

1.02

1.66

10.87

4.43

2.08

1.57

1.28

1.19

1.10

Mar.

1.66

1.57

1.47

1.77

1.47

1.47

1.37

1.37

1.37

1.37

1.28

1.37

1.28

1 VT

1.37

1.47

Apr.

1.87

1.77

1.67

1.57

1.47

1.37

1.57

1.57

1.57

1.57

1.77

1.57

1.37

1.47

1.47

May.

1.28 i 10

1.10

1.10

1.19

1.37

1.19

1.19

2.88

1.37

3.89

4.57

3.63

1.97

1.66

1 C7

June.

1.02

1.02

.93

.93

.93

. .93

.93

.85

.85

.85

1.10

1.10

.93

1.19

2.53

July.

0.77

.77

.77

.77

.70

.93

.93

.93

.85

.85

.85

.85

.85

1.97

1.10

1.02

Aug.

0.70

.70

.62

.62

.70

.70

.70

.70

.62

.62

2.64

1.77

.85

.77

1.47

1.19

Sept.

0.70

.62

.62

.62

.62

.62

.55

.62

.62

.62

.62

.55

.55

.55

.85

Oct.

0.85

.77

.77

.77

.77

.77

1.97

6.50

.93

2.53

12.92

2.64

1.77

1.61

1.44

1.27

Nov.

0.93

.85

1.47

1.10

.85

2.19

3.63

2.76

1.57

1.57

1.47

1.37

1.37

1.87

2.08

Dec.

1.77

1.77

1.97

7.30

3.24

6.98

4.85

3.63

3.12

2.70

2.53

2.30

2.30

2.19

2.08

2 na

Monthly discharge of Pauoa Stream below Kahuawai Spring, near Honolulu, Oahu,

for 1912.

[Drainage area, 0.79 square mile.]

Month.

March

April..............................................

May...............................................

July...............................................

October. ..........................................

The year. ...................................

Discharge in second-feet.

Maximum.

2.19 

10.9 

11.0 

2.88 

4.57 

2.53 

2.08 

2.64 

1.02 

12.9 

4.85 

13.5

13.5

Minimum.

0.93 

.70 

.93

1.28 

1.10 

.85 

.70 

.62 

.55 

.77 

.85 

V66

.55

Mean.

1.57 

1.44 

1.91 

1.61 

1.70 

1.09 

.99 

.88 

.72 

1.86 

1.64 

3.45

1.58

Run-off 

(total in 

acre-feet).

96.5 

82.8 

117 

95.8 

1.04 

64.9 

60.9 

54.2 

42.8 

114 

97.6 

212

1,140

Accuracy.

A. 

B. 

B. 

B. 

A. 

A. 

A. 

A. 

A. 

B. 

A. 

A.

KAHUAWAI SPRING NEAR HONOLULU, OAHU.

Location. Upper Pauoa Valley about 1J miles above Punchbowl and one-fourth

mile above Pauoa Stream weir station, about 2J miles northeast of Honolulu. 

Records available. September 23 to December 31, 1912. 

Gage. 2-inch by 2-inch heavy stake driven into pool of spring 10 feet above weir to

measure head on weir; head read twice daily, at 6 a. m. and 6 p. m., by graduated

stick.

Channel. Spring boils up vertically in pool about 10, feet in diameter. 

Weir discharge. Weir is built between rock abutments on south side of pool about

15 feet from pool center; discharge computed by Francis formula for sharp-crested

weirs with end contractions. 

Accuracy. Records excellent.
ISLAND OF OAHU. Ill 

Discharge, in second-feet, of Kahuawai Spring near Honolulu, Oahu, for 1912.

Day.

1................. .......

2........................

3..........:.............

4........................

5........................

6........................

7........................

8........................

9........................

10........................

11........................

12........................

13........................

14........................

15........................

Oct.

0.47

.50

.47

.47

.47

.47

.47

.47

.47

.47

.50

.47

.47

.47

50

Nov.

0.50

.50in

50

.47

.47

.47

in

.50

50

.50

.50

50

.50

.50

Dec.

0 17

.60

.67

71

.75

.71

.71

.71

.71

.71

.71

.71

.71

.64

64

Day.

16........................

17........................

18........................

19........................ 20..........:.............

21........................

22........................

23......................'..

24........................

OK

9fi

27........................

28........................

29........................

on

°.1

Oct.

0.47

.47

.47

.47

.47

.47

.47

.47

.47

.47

.54

.54

54

.50

Cf|

.50

Nov.

0.50

.50

in

.54

.54

.54

.54

.54

.54

.54

.50

.50

.50

.54

u

Dec.

0.64

.63

.62

.61

.60

.59

.58

.57

.57

.57

.57

.57

.57

.57

.57

.57

NOTE. Daily discharge computed by formula for sharp-crested weirs with end contractions: D 3.33 

(L 0.2H)H* when L=1.50.

Monthly discharge ofKahuawai Spring near Honolulu, Oahu, for 1912.

Month.

October ...........................................

The period. .................................

Discharge in second-feet.

Maximum.

0.54 

.54 

.75

.75

Minimum .

0.47

.47 

.57

.47

Mean.

0.48 

.51 

.64

.54

Run-off 

(total in 

acre-feet).

29.5 

30.3 

39.4

99.2

Accuracy.

A. 

A. 

A.

NUUANU STEEAM BASIN.

STREAM AT KTJAKINI STREET, HOKOLtn.tr, OAHTJ.

Location. At Kuakini Street bridge, Honolulu, Oahu.

Becords available. November 15, 1911, to September 30, 1912, when station was

discontinued.

Drainage area. Not measured.

Gage. Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; no change in datum. 

Channel. One at all stages. 

Discharge measurements. At low-water stages made by wading; at flood stages

from bridge.

Diversions. All low-water discharge is diverted above station. 

Accuracy. Records fair.

The following discharge measurement was made by 0. H. Pierce: 

August 23, 1912: Width, 2.4 feet; area of section, 0.63 square foot; gage height, 

0.18 foot; discharge, 0.24 second-foot.
112 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Nuuanu Stream at Kuakini Street, Honolulu, Oahu,

for 1912. 

[Oshimo, observer.]

Day.

1. ..........................

2...........................

3...........................

4...........................

5. ..........................

6...........................

7...........................

8...........................

9...........................

10...........................

11...........................

12...........................

13...........................

14...........................

15...........................

16...........:...............

17...........................

18...........................

19...........................

20...........................

21...........................

22...........................

23...........................

24..........................

25...........................

26...........................

27...........................

28...........................

29...........................

30...........................

31...........................

Jan.

0.49

.49

.45

.48

.44

.40

.41

.48

.51

.49

.44

.40

.36

.39

.35

11

.30

.28

.28

.28

sft

30

.313ft

.28

.26

.28

OE

.28

.28

.28

Feb.

0.28

.30

.29

.28

.28

.28

.28

.28

.28

.30

.30

.28 .25'

.25

.25

.25

.25

.25

.25

.28

90

34

1.58

1.32

.79

49

.40

9t\

.28

Mar.

0.29

.28

.29

.30

.30

.30

.30in

.31

.74

i *n

1.21

1.01

.71

.51

.46

.45

.41

.52

.50

.41

.42

.41

.38

.38

9K

.36

no

.38

.38

.38

Apr.

0.30

.30

.29

.28

.30

.28

.55

.39

.72

.48

.34

.35

.32

.32

.29

.85

.56

.45

.42

.39

.42

.36

.42

.38

.39

.36

.35

.35

.34

.35

May.

0.32

.30

.30

.30

.31

.30

.31

.31

.30

.30

.28

.28

.28

.30

.29

.28

.28

.28

.29

.29

.30

.32

.36

.39

.32

.36

.36

.55

.42

.36

.35

June.

0.35

.35

.35

.36

.35

.35

.35

.35

.29

.28

.28

.25

.25

.19

.26

.20

.26

.21

.19

.18

.26

.26

.22

.32

.29

.26

.25

.32

.29

.26

July.

0.26

.30

.29

.34

.29

.25

.25

.24

.24

.26

.25

.25

.26

.51

.34

.28

.28

.26

.20

.18

.20

.20

.21

.18

.19

.18

.18

.18

.16

.15

.15

Aug.

0.15

.16

.15

.16

.15

.15

.21

.22

.20

.20

.26

.24

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.68

.&

.25-

.32

.30

Sept.

0.28

.29

.30

.28

.26

.26

.29

.22

.20

.20

.30

.20

.20

.20

.20

.20

.16

.16

.16

.19

.18

.18

.19

.20

.20

.20

.20

.20

.20

.20

Discharge, in second-feet, of Nuuanu Stream at Kuakini Street, Honolulu, Oahu,

for 1912.

Day.

1. ..........................

2...........................

3...........................

4...........................

5...........................

6...........................

7...........................

8..........................

9...........................

10...........................

11...........................

12...........................

13...........................

14...........................

15...........................

16...........................

17...........................

18...........................

19...........................

20...........................

21...........................

22...........................

23...........................

24...........................

25...........................

26...........................

27...........................

28...........................

29..............:............

30...........................

31...........................

Jan.

3.8

3.8

3

n

2.8

2 2

2

0

3.6

4.2

q Q

' 2.8

2.2

1

0

2.1

1.7

1

0

1.2

1.0

1.0

1.0

1.2

1.2

1

9

1.2

1.0

.8

1.0

.7

1.0

1.0

1.0

Feb.

1.0

1 9

l.l

1.0

1.0

1.0

1.0

1.0

1.0

1.2

1

O

1.0

.7

.7

.7

.7

, .7

.7

.7

1.0

1.1

1.6

55.0

40.0

1Q C

2.4

2.2

1.4

1.0

Mar.

1.1

1.0

1.1

1.2

1

O

1 0

1.2

1 9

1 3

11.4

42.0

34 0

24.0

.2

4.2

3 9

3.0

2

9

4.4

4.0

2.3

2.4

2.3

2.0

2.0

1.7

1.8

2.0

2.0

2.0

9 ft

Apr.

1.2

1.2

1.1

1.0

1.2

1.0

5.0

2

1

10.6

3.6

1.6

1.7

1.4

1.4

1.1

16.2

5.2

3.0

2.4

2.1

2.4

1.8

2.4

2.0

2.1

1.8

1.7

1.7

1.6

1.7

May.

1.4

1.2

1 9

1.2

1.3

1.2

1.3

1

0

1.2

1 9

1.0

1.0

1.0

1.2

1.1

1.0

1.0

1.0

1.1

1.1

1.2

1.4

1.8

2.1

1.4

1.8

1.8

5.0

2.4

1.8

1.7

June.

1.7

1.7 1 7

1.8

1 7

1.7

1.7

1.7

1.1

1.0

1.0

.7

.7

.3

.8

.4

.8

.4

.3

.2

.8

.8

.5

1.4

1.1

.8

.7

1.4

1.1

.8

July.

0.8

1.2

1.1

1.6

1.1

.7

.7

.6

.6

.7

.7

.8

4.2

1.6

1.0

1.0

.8

.4

.2

.4

.4

.4

.2

.3

.2

.2

.2

.1

.1

.1

Aug.

0.1

.1

.1

.1

.1

.1

.4

.5

.4

.4

.8

.6

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4

9.0

2.3

.7

1.4

1.2

Sept.

1.0

1.1

1.2

1.0

.8

.8

1.1

.5

.3

.2

.2

.3

f
ISLAND OF OAHU. 113 

Monthly discharge of Nuuanu Stream at Kuakini Street, Honolulu, Oahu, for 1912.

Month.

March.............................................

April..............................................

MfLV

July................... ............................

Discharge in second-feet.

AfftTimnm.

4.2 

55.0 

42.0 

16.2 

5.0 

1.8 

4.2 

9.0 

1.2

55.0

Minimum.

0.7 

.7 

1.0 

1.0 

1.0 

.2 

.1 

.1 

.1

.1

Mean.

1.95 

4.72 

5.67 

2.78 

1.46 

1.03 

.75 

.77 

.49

2.17

Eun-off 

(total in 

acre-feet).

120 

272 

349 

165 

89.8 

61.3 

46.1 

47.4 

29.2

1,180

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

LT7LTTMAHO DITCH IN MTJTJANTT VALLEY, NEAR HONOLULU, OAHTT.

Location. About 500 feet east of spillway of upper Nuuanu Valley reservoir, about

7 miles northeast of Honolulu.

Records available. September 2, 1911, to December 31, 1912. 

Gage. Vertical staff; read once daily, at 4 p. m.; no change of datum. 

Channel. One channel at all stages; shifting. 

Discharge measurements. By wading. 

Accuracy. Records fair.

Discharge measurements of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu,

for 1012.

[L. A. Moore, observer.]

Date.

Sept. 18

Oct. 21

Dec. 24

Hydrographer.

H. R. Sehulz. . ............"...............................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet. 

0.43

.28

.31

.35

Discharge.

Sec.-ft. 

0.52

.38

.53

.86

Daily gage height, in feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahut

for 1912. 

[L. A. Moore, observer.]

Day.

1...... .........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

Tan.

0.45

.45

.45

.44

.43

.44

.46

.48

.45

.44

.43

.42

.41

.40

40

.40 

.40

.40

.40

.40

Feb.

0.40

.40

.40

.40

.40

.40

.40

.40

.50

.41

.40

4(1

4ft

.40

40

.40 

.40

4ft

.40

.40

Mar.

0.40

.40

.40

.40

.40

.40

.40

.45

.70

.80

1.10

.55

.53

.50

.50

.50 

.55

.50

.50

.50

Apr.

0.45

.44

.43

.50

.54

.50

.50

.65

.50

.48

.46

.45

.43

.45

.60

1.45 

.60

.50

.43

.50

May.

0 4ft

.40

4n

.40

4(1

4ft

4ft

.38

.38

.38

.38

.38

.38

.38

vt

.38 

.37

17

.45

.40

June.

0 4ft

.40

4(1

.42

4(1

in

4ft

.50

4ft

.40

4ft

.40

.50

4ft

4n

.40 

.45

4ft

An

.40

July.

0.35

.35

.35

.34

.34

.32

.32

.50

.60

.45

4n

4fl

in

.43

.45

.42 

.41

4O

in

.30

Aug.

.030

.30

.30

.30

.30

.30

.30

.30

.30

.35

.604n

.30

.50

30

.60 

.35

.30

.30

.28

Sept.

0.30

.30

.30

.30

.30

.30

.30

.30

.29

.28

.28

.28

.27

.27

.27

""27"

.27

.30

.30

Oct.

0.30

.30

.30

.30

.30

.30

.30

.30

4ft

.30

.35

3ft

.30

.30

.30

.30 

30

on

.30

.30

Nov.

0.30

.30

.30

.30

.32

.30

.35

.32

.33

.31

.30

.30

.30

.30

.55

.33 

.32

r31

.30

.30

Dec.

1.60

.60

1.70

.60

41

.45

.45

.45

.45

An

4O

4ft

tn

.39

.39

.38 

.37

40

.70

.45

14694° WSP 336 14 8
114 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu,

for 1912 Continued.

Day.

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

9Q

30...............

31...............

Jan.

0.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

Feb.

0.40

.40

1.50

.50

.45

.45

.43

.41

.40

Mar.

0.48

.46

.45

.44

.55

.50

.50

.43

.43

.43

.42

Apr.

0.40

.40

.40

.40

.40

.40

4n

.40

.40

4n

May.

0.45

.40

.40

.50

.45

.45

.50

.45

.40

.40

.40

June.

0.40

.40

.40

.40

.38

.37

.37

.36

.36

.37

July.

0.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

Aug.

0.27

.27

.26

.25

.25

1.30

.55

.45

.40

.55

.40

Sept.

0.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

Oct.

0.30

.30

.30

.30

.30

.90

.35

.35

.35

.34

.32

Nov.

0.73

.50

.40

.35

.35

.34

.33

.35

.50

.35

Dec.

0.54

.50

.43

.40

.33

.33

.30

.30

.30

.30

.32

Daily discharge, in second-feet, of Lulumaho ditch in Nuuanu Valley, near Honolulu,

Oahu, for 1912.

Day.

1...............

2...............

3...............

4.. .............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20..............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.7

.7

.7

.7

.6

.7

.8

1.0

.7

.7

.6

.5

.4

.4

.4

.4

.4

.4

.4

.4

.4

Feb.

0.4

.4

.4

.4

.4

.4

.4

.4

1.2

.4

.4

.4

.4

.4

.4

.4

.4

.4

.4.4'

.4

.4

16.0

1.2

.7

.7

.6

.4

.4

Mar.

0.4

.4

.4

.4

.4

.4

.4

.7

3.6

4.9

9 1

1.7

1.5

1.2

1.2

1.2

- 1.7

1.2

1.2

1.2

1.0

.8

.7

.7

1.7

1.2

1.2

.6

.6

.6

.5

Apr.

0.7

.7

.6

1.2

1.6

1.2

1.2

9 Q

1.2

1.0

.7

.6

.7

2.3

15.0

2

0

1.2

.6

1.2

.4

.4

.4

.4

.4

May.

0.4

.4

.4

.4

.4

.4

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.7

.4

.7

.4

.4

1.2

.7

.7

1.2

.7

.4

.4

.4

June.

0.4

.4

.4

.5

.4

.4

.4

1.2

.4

.4

.4

.4

1.2

.4

.4

.4

.7

.4

.4

.4

.4

.4

.4

.4

.3

.2

.2

.2

.2

.2

July.

0.1

.1

.1

.1

.1

.1

.1

1.2

2.3

.7

.4

.4

.4

.6

.7

.5

.4

.4

.4

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

Aug.

0.5

.5

.5

.5

.5

.5

.5

.5

.5

.9

3.8

1.4

.5

2.5

.5

3.8

.9

.5

.5

.3

.3

.3

.2

.2

.2

14.0

3.1

1.9

1.4

3.1

1.4

Sept.

0.5

.5

.5

.5

.5

.5

.5

.5

.4

.3

.3

.3

.3

.3

.3

.3

.3

.3

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

Oct.

0.5

.5

.5

.5

.5

.5

.5

.5

1.4

.5

.9

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

.5

8.0

.9

.9

.9

.8

.6

Nov.

0.5

.5

.5

.5

.6

.6

.9

.6

.7

.5

.5

.5

.5

.5

3.1

.7

.6

.5

.5

.5

5.6

2.5

1.4

.9

.9

.8

.7

.9

2.5

.9

Dec.

18.5

3.8

20.0

3.8

1.9

1.9

1.9

1.9

1.9

1.4

1.4

1.4

1.4

1.3

1.3

1.2

1.1

1.4

5.1

1.9

2.9

2.5

1.7

1.4

.7

.6

.5

.5

.5

.5

.6

Monthly discharge of Lulumaho ditch in Nuuanu Valley, near Honolulu, Oahu, for

Month.

January ...........................................

March .............................................

May...............................................

July...............................................

November. . .......................................

The year.... ................................

Discharge in second-feet.

Maximum.

1.0 

16.0 

9.1 

15.0 

1.2 

1.2 

2.3 

14.0 

.5 

8.0 

5.6 

20.0

20.0

Minimum.

0.4 

.4 

.4 

.4 

.2 

.2 

.1 

.2 

.3 

.5 

.5 

.5

.1

Mean.

0.52 

1.02 

1.38 

1.39 

.46 

.43 

.49 

1.49 

.44 

.84 

1.03 

2.80

1.03

Run-off 

(total in 

acre-feet).

32.0 

58.7 

84.8 

82.7 

28.3 

25.6 

30.1 

91.6 

26.2 

51.6 

61.3 

172.0

745.0

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

C. 

B. 

B. 

B. 

B. 

B.
ISLAND OF OAHTJ. 115

LUAKAHA WE1B IN NTTTJANU VALLEY, NEAR HONOLULU, OABU.

Location. About 1 mile below reservoir No. 4 (main) in upper Nuuanu Valley, about 

5 miles from Honolulu post office.

Records available. January 1,1910, to December 31,1912.

Gage. Head is measured in iron pipe set about 3 feet back of weir crest; read once 

daily, at 4 p. m.; no change in datum.

Channel. Concrete aqueduct; permanent.

Discharge measurements. 4-foot sharp-crested weir of concrete with end contractions; check measurements made with current meter by wading.

Diversions. Aqueduct diverts low-water flow from Luakaha Stream, including 

seepage from reservoir No. 4.

Cooperation. Records furnished by department of water works, city of Honolulu.

DischargemeawrenwntsofLvakdha weirin NuuanuValley, near Honolulu, Odhu,for $912.

Date.

Sept. 19

19

20

20

Hydrographer.

G. K. Larrteono..........................................................

.....do.»... ...............................................................

.....do.*..................................................................

height.

Feet. 

0.195

1Q1

.208

.202

Discharge.

8ee.-ft. 

0.901

1 dSt

.964

1.50

a Measurements made through notch in concrete aqueduct at a point about 15 feet below the weir. Owing 

to roughness of bottom and sides of the aqueduct the water was very turbulent and the results obtained 

are uncertain.

& Measurements made at point in stream about 20 feet above intake and about 200 feet above weir. On 

Sept. 19 the weir formula (end contracted, sharp crested) gave a discharge of 1.14 second-feet; on Sept. 20 

gave a discharge of 1.20 second-feet and 1.31 second-feet.

Daily discharge, in second-feet, of Luakaha weirin Nuuanu Valley, near Honolulu,

for 1912.

Day.

1...... .........

2...............

3...............

4...............

5...............

6...............

7...... .........

8...............

9...............

10...............

11..... ..........

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21....... ........

22...............

23 ....

24...............

25...............

26...............

27...............

28...............

29

30............... 

31...............

Jan.

5.4

5.4

5.4

4.8

4.8

4.8

4.8

4.2

4.2

4.2

4.2

4.2

4.2

5.4

4.2

3.6

3.6

3.6

3.6

3.6

3.6

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1 

3.1

Feb.

3.1

3.6

3.1

3.1

3.1

3.1

3.1

3.1

3.6

3.1

3.6

3.1

3.1

3.1

2.6

2.6

2.6

2.6

2.6

2.6

3.1

3.1

3.1

21.

10.

4.8

3.6

3.1

3.1

Mar.

3.1

3.1

3.1

3.1

3.6

3.6

3.6

3.6

6.0

10.

10.

6.0

10.

4.8

4.2

4.2

4.8

4.8

4.8

4.2

4.2

4.2

4.2

4.2

4.8

4.2

4.2

4.2

4.2

4.2 

4.2

Apr.

4.2

4.2

4.2

4.2

4.8

4.8

4.8

4.8

6.0

4.2

4.2

4.2

4.2

4.8

4.8

13.

6.0

4.8

4.8

4.8

4.2

4.2

4.8

4.8

4.2

4.8

4.2

4.2

4.2

4.2

May.

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.1

3.6

3.6

3.6

4.8

6.0

3.6

3.6 

3.6

June.

3.6

3.6

3.6

3.6

3.1

3.1

3.1

3.6

3.1

3.1

3.1

3.1

4.8

4.2

3.6

3.6

3.6

3.1

3.1

3.1

3.1

3.1

2.6

3.6

2.6

2.6

2.6

2.6

2.6

2.6

July.

3.1

2.6

2.6

2:6

2.6

2.6

2.6

4.8

3.6

3.1

3.1

3.1

3.1

13.0

3.6

3.6

3.6

3.1

3.1

3.1

3.1

3.1

2.6

2.6

2.6

2.6

2.6

2.6

2.6

2.6 

2.6

Aug.

2.1

2.1

2.1

2.6

2.6

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.1

2.6

2.6

3.6

2.6

2.1

2.1

2.1

1.7

1.7

1.7

1.7

1.7

6.0

6.0

3.6

3.1

3.1 

3.1

Sept.

1.7

1.7

1.7

1.7

1.7

1.7

2.6

1.7

1.7

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.1

1.1

1.1

1.7

Oct.

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.7

1.7

2.1

1.7

2.1

1.7

1.7

1.7

1.7

1.7

2.1

1.7

1.7

1.7

1.7

1.7

13.0

4.8

4.2

3.1

3.1 

2.1

Nov.

2.1

2.1

2.1

2.1

2.1

1.7

1.7

2.1

2.6

2.1

1.7

1.7

1.7

1.7

1.7

2.6

2.1

2.1

2.1

2.1

7.3

3.6

2.6

2.6

2.6

2.6

2.6

3.1

3.6

3.1

Dec.

5.4

10.0

21.0

5.4

4.2

3.6

4.8

4.8

48

3.6

3.6

3.6

3.6

3.1

3.6

3.1

3.1

3.1

21.0

4.8

4.8

3.6

3.6

3.6

3.6

3.6

3.1

3.1

3.1

3.1 

3.6

NOTE. Weir has some velocity of approach, and discharge as published is probably too low; because of 

this velocity of approach the weir formula Q=3.33 LH"* is used instead of Q-3.33 (L-0.2H)H»/».
116 WATER RESOURCES OF HAWAII, 1912.

Monthly discharge of Luakaha weir in Nuuanu Valley, near Honolulu, Odhu, for 191%.

Month.

January ...........................................

March.............................................

April..............................................

May...............................................

June... ............................................

July...............................................

September... . .....................................

December. ........................................

The year. ...................................

Discharge in seeond-feet.

Maximum.

5.4 

21.0 

10.0 

13.0 

6.0 

4.8 

13.0 

6.0 

2.6 

13.0 

7.3 

21.0

21.0

Minimum.

3.1 

2.6 

3.1 

4.2 

3.1 

2.6 

2.6 

1.7 

1.1 

1.3 

1.7 

3.1

1.1

Mean.

3.96 

3.98 

4.75 

4.85 

3.47 

3.23 

3.30 

2.55 

1.44 

2.27 

2.46 

5.13

3.45

Run-off 

(total in 

acre-feet).

243

229 

292 

289 

213 

192 

203 

157 

85.7 

140 

146 

315

2,250

Accuracy.

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C.

WAIKANE STREAM BASIN. 

WAIKANE STREAM NEAR WAIKANE, OAHTJ.

Location. One-half mile above belt road highway bridge at Waikane, opposite house 

of Japanese gage keeper.

Records available. January 27 to September 30, 1912, when station was discontinued.

Gage. Vertical staff; read once daily, about 7 a. m.; washed out September 30,1912, 

and not replaced.

Channel. One at all stages; shifting.

Discharge measurements. Made by wading.

Diversions. Several above station.

Accuracy. No discharge rating obtained.

Discharge measurements of Waikane Stream near Waikane, Oahu, in 1912.

Date.

Jan. 27

May 24

Aug. 1

Hydrographer.

W.V. Hardy.............................................................

Gage 

height.

Feet. 

1.05

1.11

.92

Discharge.

Sec.-ft. 

6.31

8.27

4.34

Daily gage height, in feet, of Waikane Stream near Waikane, Oahu, for 1912.

[Sado, observer.]

Day.

1.......... ..........................

q

4....................................

5....................................

6....................................

7....................................

Jan.

........

Feb.

1.05

1.10

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.15

Mar.

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.10

May.

........

June.

1.00

1.05

1.05

1.05

1.05

1.05

1.05

1.00

1.00

.90

July.

1.00

1.00

1.00

1.00

1.00

.90

.90

1.00

.90

Aug.

1.00

1.00

1.00

1.20

1.00

1.00

1.20

1.20

1.20

1.00

Sept.

0.90

.90

1.00

.90

.90

1.00

1.00

1.00

.90

.90
ISLAND OF OAHU. 117

Daily gage height, in feet, of Waikane Stream near Waikane, Oahu, for 1912 Continued.

Day.

11....................................

12....................................

13....................................

14....................................

15.......

16....................................

17....................................

18....................................

19....................................

20....................................

21....................................

22....................................

23....................................

24....................................

25.

26....................................

27....................................

28....................................

29....................................

30....................................

31....................................

Jan.

1.05

1.05

1.05

1.05

1.05

Feb.

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

Mar.

1.20

1.10

1.05

1.05

1.05

1.30

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

1.05

May.

1.10

1.00

1.00

1.00

1.05

1.00

June.

0.90

1.00

1.00

on

1.00

1.00

.90

.90

.90

.90

1.00

1.00

1.00

1.00

1.00

1.00

on

.90

.90

1.00

July.

0.90

1.20

1.20

1.20

1.10

1.10

1.10

1.10

1.20

1.20

1.00

1.00

1.00

.90

.90

.90

on

1.00

1.00

.90

.90

Aug.

1.00

.90

.90

1.00

.90

,90

1.00

1.00

.90

.90

.90

.90

.90

1.00

1.00

1.00

1.00

.90

.90

1.00

.90

Sept.

1.00

.90

.90

.90

1.00

1.00

1.00

1.00

1.00

.90

.90

.90

1.00

1.00

.90

.90

1.00

1.00

.91

.91

WAIAHOLE STREAM BASIN. 

WAIAHOLE STREAM AT MANIANIAULA, NEAR WAIKAWE, OAHTJ.

Location. 3J miles southwest of Waikane, Oahu, by road and trail in upper

Waiahole Valley, at boundary line of Government and private land. 

Records available. September 25, 1911, to December 31,1912. 

Gage. Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; no change in datum. 

Channel. One at all stages; somewhat shifting. 

Discharge measurements. By wading. 

Diversions. None above gage. 

Accuracy. Fair.

Discharge measurements of Waiahole Stream at Manianiaula, near Waikane, Oahu, in

19H.

Date.

26 

May 24 

Aug. 3

Hydrographer.

Pierce and Schulz.. 

W.V. Hardy......

&,

Feet. 

0.99

.98 

.94 

.96

Discharge.

Sec.-ft. 

25.1

25.1 

21.5 

21.6

Date.

Sept. 16

Oct. 16 

Dec. 31

Hydrographer.

.....do.............

Larrison & Dort. . .

&,

Feet. 

0.94

.98 

.91

Discharge.

Sec.-ft. 

19.8

23.6

18.2

Daily gage height, in feet, of Waiahole Stream at Manianiaula, near Waikane, Oahu, for

191%.

[Peleioholani, observer.]

Day.

1.. .............

2...............

3...............

4...............

5...............

6..............:

7...............

8...............

9...............

10...............

Jan.

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

Feb.

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00 1 00

1.01

Mar.

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00

Apr.

1.00

1.00

1.00

1.00

1.00

1.00

1.00

1.00 1 00

1.00

May.

.......

June.

0 95

95

95

95

95

95

95

QK

95

96

July.

098

98

98

98

98

98

98

98

98

1.00

Aug.

0.95

.95

.95

.95

.95

.95

.95

.95

.95

Sept.

0.98

.98

.95

.95

.95

.95

.95

.95

95

.95

Oct.

0.95

.95

.95

.95

.95

.95

.95

.95

OH

.95

Nov.

0.95

.95

.95

.95

.95

.95

.95

.95

95

.95

Dec.

0.95

.98

1.88

1.00

.98

.98

.95

.95

.95

.95
118 WATER EESOUECES OF HAWAII, 1912.

Daily gage height, in feet, of Waiahole Stream at Manianiaula, near Waikane, Ooftw,/or

1912 Continued.

Day.

11...............

12............... 

13...............

14............... 

15...............

16............... 

17...............

18...............

19............... 

20...............

21............... 

22............... 

23............... 

24...............

25...............

26...............

27...............

28...............

29............... 

30............... 

31...............

Jan.

1.00

1.00 

1.00

1.00 

1.00

1.00 

1.00

1.00 

1.00 

1.00

1.00 

1.00 

1.00 

1.00

1.00

1.00

1.00

1.00

1.00 

1.00 

1.00

Feb.

1.00

1.00 

1.00

1.02 

1.00

1.00 

1.00

1.00 

1.00 

1.00

1.00 

1.00 

1.00 

1.00

1.00

1.00

1.00

1.00

1.00

Mar.

1.00

1.00 

1.00

1.00 

1.00

1.00 

1.00

1.00 

1.00 

1.00

1.00 

1.00 

1.00 

1.00

1.00

1.00

1.00

1.00

1.00 

1.00 

1.00

Apr.

1.00

1.00 

1.00

1.00 

1.00

1.00 

l.OS

1.00 

1.00 

1.00

1.00 

1.00 

1.00 

1.00

1.00

1.00

1.00

1.00

1.00 

1.00

May.

.......

".'.".".

"*6.~95"

.95

.95

1.05

.96

.95 

.95 

.95

June.

0.95

.95 

.95

.95 

.95

.95 

.95

.95 

.95 

.95

.95 

.95 

.95

.95

.95

.95

1.00

1.00

1.00 

1.00

July.

1.00

1.00 

1.10

1.00 

1.00

1.00 

.98

.98 

.98 

.98

.98 

.98 

.98 

.98

.98

.98

.98

.95

.95 

.95 

.95

Aug.

0.98

.98 

.98

.98 

.98

.98 

.98

.95 

.95 

.95

.95 

.95 

.95 

.95

.95

.95

.95

.95

.95 

.98 

.98

Sept.

0.95

.95 

.95

.95 

.95

.95 

.95

.95 

.95 

.95

.95 

.95 

.95 

.95

.95

.95

.95

.95

.95 

.95

Oct.

0.95

.95 

.95

.95 

.95

.95

.98

.98 

.98 

.98

.98 

.99 

.95 

.95

.95

1.05

.98

1.15

1.00 

.98 

.95

Nov.

0.95

.95 

.95

.95 

.95

.95 

.95

.95 

.95 

.95

.98 

.98 

.98 

.95

.95

.95

.95

.95

1.02 

.98

Dec.

0.95

.92 

.92

.92 

.92

.92 

.82

.92 

.92 

.92

.92 

.99 

.96 

.05

.95

92

.93

.82

"".*9i

 Daily discharge, in second-feet, of Waiahole Stream at Manianiaula, near Waikane, Oahu,

for 1912.

Day.

1.. .............

2.. .............

3...............

4...............

5...............

6...............

7............... 

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

21...............

22...............

23......:........

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

26.5

26.5

26.5

26.5

26.5

26.5

26.5 

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5 

. 26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

Feb.

26.5

26.5

26.5

26.5

26.5

26.5

26.5 

26.5

2$.5

27.5

26.5

26.5

26.5

28.5

26.5

26.5 

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

Mar.

26.5

26.5

26.5

26.5

26.5

26.5

26.5 

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5 

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

Apr.

26.5

26.5

26.5

26.5

26.5

26.5

26.5 

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5 

36.0

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

26.5

May.

.......

.......

21.5

21.5

21.5

O*> f\

22.5

21.5

91 5

21.5

June.

21.5

21.5

21.5

21.5

21.5

21.5

21.5 

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5 

21.5

21.5

21.5

21.5

21.5

21.5

21.5

91 n

21.5

21.5

26.5

26.5

26.5

26.5

July.

24.5

24.5

24.5

24.5

24.5

24.5

24.5 

24.5

24.5

26.5

26.5

26.5

38.0

26.5

26.5

26.5 

24.5

24.5

94 5

24.5

24 %

24.5

94 5

24.5

24.5

24.5

94 5

21.5

21.5

21.5

21.5

Aug.

21.5

21.5

21.5

21.5

21.5

21.5

21.5 

21.5

21.5

21.5

24.5

24.5

24.5

24.5

24.5

24.5 

24.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

24.5

24.5

Sept.

24.5

24.5

21.5

21.5

21.5

21.5

21.5 

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5 

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

91 Z

21.5

21.5

21.5

Oct.

21.5

21.5

21.5

21.5

21.5

21.5

21.5 

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5 

24.5

24.5

24.5

24.5

24.5

25.5

21.5

21.5

21.5

32.0

24.5

44.0

26.5

94 1

21.5

Nov.

21.5

21.5

21.5

21.5

21.5

21.5

21.5 

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5

21.5 

21.5

21.5

21.5

21.5

94 «»

24.5

94 5

21.5

21.5

21.5

*>1 K

21.5

28.5

24.5

Dec.

21.5 21 »

132.0

26.5

24.5

24.5

21.5 

21.5

21.5

21.5

21.5

18.7

18.7

18.7

18.7

18.7 

18.7

18.7

18.7

IS 7

18.7

25.5

21.5

21.5

21.5

18.7 ia 7

18.7

18.7

17.8

17.8
ISLAND OP OAHU.

Monthly discharge of Waiahole Stream at Manianiaula, near Waikane, Oahu, for 1912.

Month.

January ...........................................

February . .........................................

March.

April.............................................. Mayo

July...............................................

August.. . .........................................

November. ........................................

December .........................................

Discharge in second-feet.

Maximum.

26.5 

28.5 

26.5 

36.0 

32.0 

26.5 

38.0 

24.5 

24.5 

44.0 

28.5 

132.0

132.0

Minimum.

26.5 

26.5 

26.5 

26.5 

21.5 

21.5 

21.5 

21.5 

21.5 

21.5 

21.5 

17.8

17.8

Mean.

26.5 

26.6 

26.5 

,26.8 

22.9 

22.2 

24.9 

22.4 

21.7 

23.5 

22.1 

24.1

24.3

Run-off 

(total in 

acre-feet).

1.630 

1,530 

1,630 

1,590 

1,410 

1,320 

1,530 

1,380 

 1,290 

1,440 

1,320 

1,480

17,600

Accuracy.

C. 

C. 

C. 

C. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

o 8 days only. 

WAIAHOLE STREAM AT WAIAHOLE, NEAR WAIKANE, OAHU.

Location. One-fourth mile above belt road highway bridge, 1 mile southeast of

Waikane, Oahu.

Becords available. September 23, 1911, to December 31, 1912. 

Gage. Vertical staff; read once daily, about 7 a. m.; no change in datum. 

Channel. One at all stages, slightly shifting. 

Discharge measurements. Low-water measurements made by wading; flood

measurements from bridge.

Diversions. Several irrigation ditches divert water above the station: none below. 

Accuracy. Record fair.

Discharge measurements of Waiahole Stream at Waiahole, near Waikane, Oahu, 1912.

Date.

Jan. 2

25

Ilydrographer.

C. H. Pierce.. ......

W.V. Hardy.......

Gage 

height.

Feet. 

1 25

1.22

1.10

Discharge.

Sec.-ft. 

38.7

39.3

25.1

Date.

Dec. 31

Hydrographer.

C. H. Pierce........

.....do.............

&,

Feet. 

1.11

1.14

1.10

Discharge.

Sec.-ft. 

27.0

29.2

26.3

Daily gage height, in feet, of.Waiahole Stream at Waiahole, near Waikane, Oahu, for 1912.

Day.

1.. ............. 

2............... 

3............... 

4............... 

5...............

6............... 

7...............

8...............

9............... 

10...............

11............... 

12............... 

13............... 

14............... 

15...............

Jan.

*"i."25" 

1.25 

1.25 

1.25

1.25 

1.28

1.25

1.25 

1.25

1.25 

1.25 

1.25 

1.28 

1.25

Feb.

1.22 

1.22 

1.25 

1.25 

1.25

1.22 

1.25

1.22

1.25 

1.32

1.22 

1.22 

1.22 

1.22 

1.22

Mar.

1.20 

1.18 

1.18 

1.18 

1.18

1.18 

1.18

1.18

1.18 

1.18

1.22 

1.18 

1.18 

1.18 

1.18

Apr.

1.18 

1.18 

1.18 

1.18 

1.18

1.18 

1.20

1.20

1.20 

1.18

1.18 

1.15 

1.15 

1.20 

1.20

May.

"..".".

.......

June.

1.10 

1.10 

1.13 

1.13 

1.10

1.13 

1.13

1.10

1.10 

1.10

1.10 

1.10 

1.10 

1.10 

1.10

July.

1.12 

1.13 

1.13 

1.13 

1.13

1.13 

1.20

1.20

1.20 

1.20

1.45 

1.20 

1.20

Aug.

"i.'io'

1.10

1.15 

1.15

1.12

1.10 

1.10

1.25 

1.10 

1.10 

1.10 

1.10

Sept.

1.15 

1.15 

1.10 

1.10 

1.10

1.10 

1.10

1.10

1.10 

1.10

1.10 

1.10 

1.10 

1.10 

1.10

Oct.

1.10 

1.10 

1.15 

1.10 

1.10

1.10 

1.10

1.10

1.10 

1.10

1.15 

1.15 

1.10 

1.10 

1.10

Nov.

1.15 

1.15 

1.15 

1.15 

1.15

1.10 

1.10

1.10

1.10 

1.15

1.15 

1.20 

1.20 

1.20 

1.20

Dec.

1.25 

1.25 

1.40 

1.40 

1.25

1.10 

1.10

1.10

1.10 

1.10

1.10 

1.10 

1.10 

1.10 

1.10
120 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Waiahole Stream at Waiahole, near Waikane, Oahu, for

Continued.

Day.

IS... ............ 

17...............

18............... 

19............... 

20...............

21............... 

22...............

23. .............. 

21.... ...........

25........ ....i..

23............... 

27...............

23...............

2!...............

31.... ........... 

31...............

Jan.

1.25 

1.25

1.25 

1.25 

1.25

1.25 

1.25

1.25 

1.28

1.25 

1.22

1 V).

i.:s i.:-5

1.25 

1.22

Feb.

1.22 

1.22

1.22 

1.22 

1.22

1.25 

1.22

1.22 

1.18

1.18 

1.18

1 1ft

1.18

1.18

Mar.

1.18 

1.18

1.18 

1.18 

1.18

1.18 

1.18

1.18 

1.18

1.18

1.15 

1.15

1.15

1.15

1.18 

1.15

Apr.

1.20 

1.20

1.20 

1.20 

1.18

1.18 

1.18

1.20 

1.20

1.18 

1.18

1

10

1.18

1.18 

1.18

May.

.......

.......

.......

1.10 

1.10,

1.10

1.10 

1.15

1.10

1.10 

1.10 

1.10

June.

1.10 

1.10

1.10 

1.10 

1.13

1.13 

1.13

1.13 

1.13

1.13 

1.13

1

-IQ

1.20

1.13 

1.13

July.

.......

.......

.......

.......

.......

.......

.......

Aug.

1.10 

1.10

1.15 

1.10 

1.10

1.10 

1.10

1.10 

1.10

1.10

1.10 

1.10

1.10

1.10 

1.10 

1.10

Sept.

1.10 

1.10

1.10 

1.10 

1.10

1.10 

1.10

1.10 

1.10

1.10

1.10 

1.10

1.10

1.10 

1.15

Oct.

1.10 

1.10

1.10 

1.10 

1.10

1.10 

1.10

1.10 

1.15

1.15 

1.15

I

oft

1.20

 1.20 

1.15 

1.15

Nov.

1.20 

1.10

1.20 i.ro

1.20

1.20 

l.CO

1.20 

1.20

1.20 

1.20

I

Ort

1.20 i.ro

l.CO

Dec.

1.10 

1.10

1.25 

1.10 

1.10

1.25 

1.25

1.10 

1.10

::::::

"i'io

Daily discharge, in second-feet, cf Waiahole Stream at Waiahole, near Waikane, Oahu, for

1912.

Day.

1...............

2...............

3...............

4...............

6...............

6...............

7...............

8...............

9............... 10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

.21...............

22...............

23...............

24...............

25...............

26.. .............

27...............

28...............

29...............

30...............

81...............

Jan.

44

44

44

44

44

49

44

44

44

44

44

44

49

44

44

44

44

44

44

44

44

44

49

44

39

39

44

44

44

39

Feb.

39

39

44

44

44

39

44

39

44

55

39

39

39

39

39

39

39

39

30

39

44

39

39

33

33

33

33

33

33

Mar.

36

33

33

33

33

33

33

3J

33

33

39

33

33

33

33

33

33

33

33

33

33

33

33

33

33

30

30

30

30

33

30

Apr.

33

33

33

33

33

33

36

36

36

33

33

30

30

36

36

36

36

36

36

33

33

33

36

36

33

33

33

33

33

33

May.

26

26

26

26

30

26

26

. 26

26

June.

26

26

28

28

26

28

28

26

26

26

26

26

26

26

26

26

26

26

26

28

28

28

28

28

28

28

28

36

28

28

July.

' 2728

28

28

28

28

36

36

36

36

80

36

36

35

35

34

34

33

33

32

32

31

31

30

30

29

29

28

28

27

27

Aug.

26

26

26

26

26

30

30

27

26

26

44

26

26

26

26

26

26

30

26

26

26

26

26

26

26

26

26

26

26

26

26

Sept.

30

30

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

26

30

Oct.

26

26

30

26

26

26

26

26

26

26

30

30

26

26

26

26

26

26

26

26

26

26

26

30

30

30

36

36

36

30

30

Nov.

30

30

30 30

30

26

26

26

26

30

30

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

36

Dec.

44

44

70

70dd.

26

26

26

26

26

26

26

26

26

26

26

26

44

26

26

Ai

44

26

26

26

26

26

26

26

26

26

NOTE. Discharge from July 14 to Aug. 3 estimated by comparison with Waiahole Stream at 

Manianiaula.
ISLAND OF OAHTJ. 121. 

Monthly discharge of Waidhole Stream at Waiahole near Waikane, Oahu, for

Month.

April..............................................

"MflTTO *

July...............................................

October. ........... . ............................

Discharge in second-feet.

Maximum.

49 

55 

39 

36 

30 

36 

80 

44 

30 

36 

36 

70

. SO

Minimum.

39 

33 

30 

30 

26 

26 

27 

26 

26 

26 

26 

26

26

Mean.

42.6 

39.4 

32.8 

33.9 

26.5 

27.3 

32.9 

27.0 

26.4 

28.0 

33.3 

32.3

32.2

Kun-off 

(total in 

acre-feet).

2,620 

2.260 

2,020 

2,020 

1.630 

1,620 

2.020 

1,660 

1,570 

1,720 

1,980 

1,990

23,100

Accuracy.

B. 

B. 

B. 

B. 

D. 

B. 

C. 

C. 

B. 

B. 

B. 

C.

o 9-day period. 

KAHANAIKI STREAM NEAR WAIMANALO, OAHTT.

Location. At highway bridge on Waimanalo-JIonolulu road, about 12 miles east of

Honolulu by road. 

Records available. Gage heights and discharge measurements from November 12

to December 31, 1912. 

Gage. Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in

datum.

Channel. One at all stages; permanent.

Diversions. One from each of the two branches of the stream above the station. 

Accuracy. Good.

Cooperation. Maintained in cooperation with the Kaneohe Ranch Co. 

Discharge measurements. Low-water stages by wading; flood measurements

from bridge.

Discharge measurements of Kahanaiki Stream near Kailua, Oahu, in 1912.

Date.

Nov. 20

Dec. 27

Hydrographer.

G. E. Larrison ...........................................................

Gage 

height.

Feet. 

1.00

.99

Discharge.

Sec.-feet. 

0.65

.82

Daily gage height, in feet, of Kahanaiki Stream near Waimanalo, Oahu, for 1913.

Day.

1........ .......

2...............

3...............

4...............

s...............

6...............

7...............

9............... 10...............

Nov. Dec.

1.72

1.39

9 91

1.62

1.58

1.36

1.36

1.35

1.31

1.29

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

ia

10

20..............

Nov.

1.05

1.02

1 04

1.10

1.04

1.02

1.02

1 fU

1

AO

Dec.

1 91!

1.22

1 99

1.20

1 1Q

1.16

1.16

1.16

1.16

1.15

Day.

91

22..............

93

24..............

25..............

26..............

27..............

9S

29.............. in

31..............

Nov.

1.12

1.14

1.14

1.12

1.11

1.10

1.09

1.09

1.15

1 19

Dec.

1.20

1.22

1.15

1.15

1.15

1.15

1.00

.98

98

QO

.95
122 WATER EESOUECES OF HAWAII, 1912. 

KAXLUA STREAM NEAR WAIMANAZO, OAHU.

Location. Three-fourths mile east of point on Waimanalo-Honolulu road, where

road to rice mill leaves main highway; about 150 feet below intake at Wong

Leong ditch. 

Records available. Gage heights and discharge measurements from November 12

to December 31,1912. 

Gage. Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in

datum.

Channel. One at all stages; fairly permanent. 

Discharge measurements. By wading. 

Diversions. Wong Leong ditch diverts all low-water discharge at point 150 feet

Accuracy. Record fair.

Cooperation. Maintained in cooperation with the Kaneohe Ranch Co.

Discharge measurements of Kailua Stream near Waimanalo, Oahu, in

Date.

Nov. 20

Dec. 276

Hydrographer. 

G. K. LarriSon...........................................................

Gage 

height.

Feet. 

1.79

2.19

Discharge.

Sec.-ft. 

«

1.64

o Water diverted by ditch at dam 150 feet above. & Wading 100 feet above gage. 

Daily gage height, in feet, of Kailua Stream near Waimanalo, Oahu, for 1912.

Day.

1. .............

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

2.89 

2on

4.25

2.60

2.54

2.31

2.40

2.41

2.34

2.31

Day.

11.............. 

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

"Tra"

1.78

1.78

1 80

1.80

1.80

1.80

1.80

1.80

Dec.

2.31 

2.30

2.30

2.30

2.30

2.29

2.28

2.26

2.32

2.29

Day.

21..............

22

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

1.84 

1.8S

1.81

1.80

1.80

1.80

1.80

2.00

2.01

1.80

Dee.

2.30 

2.30

2-28

2.28

2.20

2.20

2.20

2.20

2.20

2.20

2.19

POHAKEA STREAM NEAR WAIMANALO, OAHTT.

Location. One-half mile above highway bridge on the Waimanalo-Honolulu road,

about 12 miles by road east of Honolulu. 

Records available. November 12 to December 31, 1912. 

Gage. Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in

datum.

Channel. One at all stages; fairly permanent. 

Discharge measurements. By wading for all stages. 

Diversions. None above station; two small ditches below station. 

Accuracy. Fair. 

Cooperation. Maintained in cooperation with the Kaneohe Ranch Co.
 ISLAND OF OAHU. 123

Discharge measurements ofPohakea Stream new Waimanal&, Odhu, in 1912.

Date.

Nov. 20

Dec. 27

Hydrographer.

Larrison and Dort

Gaea 

height.

Feet. 

a 92

1.18

Discharge.

Sec.-ft. 

0.06

.17

Daily gage height, in feet, of Pohdkea Stream near Waimanalo, Oahu,for 1912.

Day.

1.. ............

2..............

3..............

4..............

5....... .......

6..............

7..............

8..............

8..............

10..............

Nov. Dec.

1.69

1.21

1.74

1.55

1.52

1.38

1.38

1.34

1.31

1.29

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19

20..............

Nov.

0.95

.95

09

1.04

.95

.95

.92

fU

94

Dec.

1.28

1.24

1.28

1 94

1.22

1.22

1 99

1.21

1.21

1.20

Day.

01

22..............

91

24..............

25..............

26..............

27..............

28..............

OQ

30..............

31..............

Nov.

1.14

1.11

1.06

1.02

1.01

1.00

1.00

1.02

1.20

1.05

Dee.

1 99

1 91

1.20

1.20

1.20

1.20

1.15

1.15

1.15

1.15

1.15

KAMAKALEPO STREAK NEAR WAIMANALO, OAHTT.

Location. At highway bridge on Waimanalo-Honolulu road, about 12 milea east,

by road, of Honolulu.

Records available. November 12 to December 3, 1912. 

Gage. Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; washed out by

flood December 3, 1912; not replaced. 

Channel. One at all stages; fairly permanent. 

Discharge measurements. Low-water measurements made by wading; flood

measurements made from bridge. 

Diversions. None. 

Accuracy. Fair. 

Cooperation. Maintained in cooperation with the Kaneohe Ranch Co.

Discharge measurements of Kamdkalepo Stream near Waimanalo, Oahu, in 1912.

Date.

Nov. 20

Dec. 27

Hydrographer. &,

Feet. 

1.24

Discharge.

Sec.-ft. 

6.96

L52

Daily gage height, in feet, of Kamdkalepo Stream near Waimanalo, Oahu,for 1912.

Day.

1. .............

o

3.............. 

4.............. 

6..............

6. .............

7..............

8..............

^.. ............

10..............

Nov.

........

".'.".'.".

Dec.

1.92 

1.40

1.60

Day.

11..............

12..............

13.............. 

14.............. 

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

"Tils'

1.22 

1.22 

1.28

1.24

1.22

1.22

1.24

1.22

Dec.

........

 -" -

Day.

21.............. 

22..............

23.............. 

24.............. 

25..............

26..............

27..............

28..............

29..............

80..............

31..............

Nov.

1.25 

1.29

1.28 

1.25 

1.25

1.25

1.25

1.26

1.34

1.28

Dec.

........

 - "« 
124 WATER RESOURCES OF HAWAII, 1912.

EAZMI STREAM NEAR WAIMANALO, OAET7.

Location. At high-way bridge on Waimanalo-Honolulu road about 12£ miles east byroad from Honolulu. 

Records available. Gage heights and discharge measurements from November 12

to December 31, 1912. 

Drainage area. Not measured.

Gage. Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in datum. 

Channel. One at all stages; fairly permanent. -

Discharge measurements. Low-water by wading; floods from bridge. 

Diversions. None. 

Accuracy. Good. 

Cooperation. Maintained in cooperation with the Kaneohe Ranch Co.

Discharge measurements of Kaimi Stream near Waimanalo, Oahu, in

Pate.

Nov. 20

Dec. 27

Uydrographer.

Larrison and Dort ........................................................

Gage 

height.

Feet. 

1.59

1.86

Discharge.

8ec.-ft. 

1.38

3.72

Daily gage height, in feet, of Kaimi Stream near Waimanalo, Oahu, for 1912.

Day.

1.. ............

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9

10..............

Nov. Dec.

2 4fl

1.82

2.72

2.01

1 00

1.84

1.88

1.89

1.89

1.90

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

10

20..............

Nov.

1.58

1.58

1.58

1.68

1.58

1.58

1.58

1.60

1.59

Dec.

1.80

1.70

1.70

1.70

1.88

1.89

1.90

1.89

1.95

1.89

Day.

91

22..............

23..............

24..............

25..............

26..............

27..............

28..............

on

30..............

31..............

Nov.

1 64

1.66

1.62

1.60

1.61

1.60

1.65

1.76

1.75

1.69

Dec.

1.90

1 89

1.88

1.90

i on

1.90

1.90

1.85

1.85

1.85

1.88

MAKAWAO STREAM NEAR WAIMANALO, OAHTT.

Location. One-fourth mile upstream from confluence of Makawao and Kaimi 

streams and 100 feet above intake of irrigation ditch on Waimanalo-Honolulu 

road about 12£ miles east by road of Honolulu, Oahu.

Records available. November 12 to December 31, 1912.

Gage. Vertical staff; read twice daily, at 7 a. m. and 4 p. m.; no change in datum.

Channel. One at all stages; practically permanent.

Discharge measurements. By wading.

Diversions. Low-water discharge of two main branches is diverted into the Makawao 

ditch at points about three-fourths mile above station. An irrigation ditch 

diverts most of the low-water discharge at a point about 100 feet below the gage.

Accuracy. Records excellent.

Cooperation. Maintained in cooperation with the Kaneohe Ranch Co.

Discharge measurements of Makawao Stream near Waimanalo, Oahu, in 1912.

Date.

Nov. 20

Dec. 27

Hydrographer.

I/arr ison and D or t ........................................................

Gage 

height.

Feet. 

X).81

.90

Discharge.

Sec.-ft. 

0.96

2.24
ISLAND OF OAHTJ. 125

Daily gage height, in feet, of Mdkawao Stream near Waimanalo, Oahu,for 1912.

Day.

1.. ............

2..............

3..............

4..............

5..............

.6..............

7..............

8..............

10..............

Nov. Dec.

1.45

1.99

2.46

1.14

1.09

..86

.94

.96

.99

.95

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

0.80

.80

.81

.81

. .81

.80

.80

.81

.80

Dec.

0.95

.96

.95

no

Q9

.92

.92

.95

.95

.92

Day.

21..............

OO

23..............

24..............

25..............

26.. .............

27..............

28

29

30..............

31..............

Nov.

0.84

.84

.82

on

.82

.82

.82

Oft

.84

.82

Dec.

0.90

04

.91

01

.90

on

on

on

on

.90

.90

1CAKAWAO DITCH NEAR WAIMANALO, OAHtT.

Location. At east end of flume in Makawao Gulch, 4 miles west of Waimanalo 

plantation headquarters. Waimanalo plantation is about 15 miles east of Honolulu, Oahu.

Records available. November 1 to December 31, 1912.

Gage. Vertical staff on right side at east end of flume; graduated to hundredths; 

read twice daily, at 8 a. m. and 4 p. m., by ditch tender at plantation.

Channel. Flume 2.0 x 1.25 feet; clean and in good condition.

Discharge measurements. By wading.

Accuracy. Excellent.

Cooperation. Maintained in cooperation with the Waimanalo Plantation Co.

Discharge measurements of Makawao ditch near Waimanalo, Oahu, in

Date.

Oct. 24

31

Dec. 27

Hydrographer. Gage 

height.

Feet. 

0.62

.64

.25

Discharge.

Sec.-ft. 

1.81

2.36

Daily gage height, in feet, of Makawao ditch near Waimanalo, Oahu, for 1912.

Day.

1..... .......

2... .........

3............

4............ 

5............

6............

7... ....... ..

8..............

9.............

10.... ..........

Oct.

......

Nov.

0.65

.65

.65

.65

.65

.65

.70

.70

Dec.

0.72

.95

.95

.91 

.94

Dry.

Day.

11............

12............

13............

14............

15............

16............

17............

18............

19............

20............

Oct.

......

-

Nov.

0.65 .a5

.66

.68

.67

.67

Dec.

Dry. 

Dry.

Dry.

Dry.

Day.

21............

22............

23

24............ 

25............

26............

27............

28............

29

30............

31............

Oct.

0.62

.64

Nov.

0.70

.73

.68

"."TO"

69

fiQ

.9284

.78

Dec.

Dry. 

Dry.

Dry.

WON0 LEONG DITCH NEAR WAIMANALO, OAHTT.

Location. Three-fourths mile east of point where road to rice mill leaves WaimanaloHonolulu road, and about 100 feet below ditch intake on the Kailua Stream.

Records available. Gage heights and discharge measurements from November 12 

to December 31,1912.
126 WATER RESOURCES OF HAWAII, 1912.

Gage. Vertical staff; read twice daily, about 7 a. m. and 4 p. m.; no change in datum.

Channel. One at all stages; permanent.

Discharge measurements. By wading.

Diversions. This ditch diverts the low-water discharge of the Kailua Stream.

Accuracy. Excellent.

Cooperation. Maintained in cooperation with the Kaneohe Ranch Co.

Discharge measurements of Wong Leong ditch near Waimanalo, Oahu, in 1912.

Date.

Nov. 20

Dec. 27

Hydrographer. &,

Feet, 

1.13

1.51

Discharge.

Sec.-feet. 

3.10

6.48

Daily gage height, in feet, of Wong Leong ditch near Waimanalo, Oahu, for 1912.

Day.

1.. .............

2.. .............

3.. .............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

Nov. Dec.

1.58

1 49

1.55

1 40

1.45

1.50 i tin

i <tfi

1 <tfi

1.50

Day.

11..............

19

13..............

14..............

15..............

16..............

17..............

18..............

10

20..............

Nov.

1.50

1.52

1.52

1.72

1.59

1.56

1.55

1.12

1.12

Dec.

1.50

1.50

1.50

1.50

1.50

1.50

1.50

1.50

1.52

1.52

Day.

21..............

22.............

23..............

24..............

25.........

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

1.30

1.31

1.25

1.15

1.15

1.15

1.15

1.38

1.38

1.25

Dec.

1.52

1.51

1 <V\

L50

1.50

1 *n

1

CA

1 Ptfl

i tti

1.50

1.51

WAIMANALO DITCH BELOW RESERVOIR NEAR WAIMANALO, OAHU.

Location. On main ditch immediately below main reservoir on the Waimanalo 

plantation on windward Oahu, about 2 miles southwest of the plantation headquarters. Waimanalo is about 15 miles east of Honolulu.

Becords available. October 31 to December 31, 1912.

Gage. Vertical staff on left bank immediately below reservoir; read to quartertenths twice daily by plantation employee.

Channel. Straight, practically permanent, and clean; bed and both banks are firm 

cky.

Accuracy. Excellent.

Cooperation. Maintained in cooperation with the Waimanalo Plantation Co.

Discharge measurements of Waimanalo ditch below reservoir near Waimanalo, Oahu,

in 1912.

Date.

Oct. 31

Hydrographer. a.

Feet.

1 1Q

Discharge.

Sec.-feet. 7 sa

NOTS. Ditch operated 11 hours per day. Dry during remainder of 24 hours.
ISLAND OP OAHU. 127

Daily gage height, in feet, of Waimanalo ditch below reservoir near Waimanalo, Oahu,

for 1912.

Day.

1. .............

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov.

1.32

1.29

1.35

1.36

1.32

1.32

1.26

1.36

Dec.

1.40

1.40

1.40

1.40

1.40

1.40

1.40

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

1.41

1.3S

1.34

1.34

1.3S

1.32

1.38

1.38

1.32

Dec." Day.

21..............

22..............

28..............

24..............

25..............

26..............

27..............

28..............

20............;.

30..............

31..............

Nov.

1.35

1.38

1.32

1.38

1.34

1.38

1.32

1.40

1.40

Dec.

PUMP BITCH NEAR WAIMANALO, OAHTJ.

Location.. Below outlet pipe at pumping plant, about 1J miles north of plantation 

headquarters; Waimanalo plantation is about 15 miles east of Honolulu.

Records available. November 1 to December 31, 1912.

Gage. Vertical staff on right bank below pipe outlet; read twice daily, about 7 

a. m. and 5 p. m., by water foreman.

Channel. Clean, of stiff clay; permanent; one channel; banks covered with grass 

and small weeds; does not overflow.

Discharge measurements. By wading.

Diversions. This ditch discharges the water pumped from the Waimanalo Lagoon.

Cooperation. Maintained in cooperation with the Waimanalo Plantation Co.

Discharge measurements of pump ditch near Waimanalo, Oahu, in 1912.

Date.

Oct. 31

Dec. 27

Hydrographer. Gage

height.

Feet. 

1.28

Discharge.

Sec.-ft. 

2.44

Daily gage height, in feet, of pump ditch near Waimanalo, Oahu, for 1912.

Day.

1...... ........

3..............

4..............

5..............

6..............

7..............

8..............

Q

10..............

Nov.

1.20

1.22

1.26

1.28

1.20

Dec. Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

1Q

20..............

Nov.

1.30

1.28

1.25

1.19

1.30

Dec. Day.

21..............

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov. Dec.

NOTE. Pump working 12 hours per day; balance of 24 hours ditch was dry.
128 WATER RESOURCES OF HAWAII, 1912.

MISCELLANEOUS MEASUREMENTS ON OAHU IN 1912.

Date.

Aug. 27

27

Feb. 29

5 

5

5

9

9

9

9

g

Nov. 3

7

Aug. 3

24

4

TWntr 94.

Stream.

T<Tf|,ilna Str«q.m .

Wong Leong ditch .....

TCfthftTifvilri Strewn . , Waikalua ditch .........

.....do..................

.....do..................

.....do..................

Old Waikalua ditch. ....

Kepo ditch...... .......

.....do..................

Waste ditch... ..........

Rice-mill ditch No. 4 ...

.....do..................

Stream.

.....do..................

Tributary to 

.....do.................

(a).......... ...........

83:::::::::::::::::::::

.....do.................

«... ..................

Locality.

Palolo Valley.

Kailua Valley. 

Flume below intake Kailua Valley. 

Kailua Valley...... ...............

Valley.

60 feet below Government road,

Kaneohe.

Kaneohe. 

Below rice mill, Kaneohe. ........

Intake, Kaneohe.. ................

.....do............................

.....do............................

.....do............................

.....do............................

Discharge.

Sec.-ft. 

0.75

.83

.80

3.49

2.21

486 

. .61

93

2.62

6.78

8 9Q

10.6

1.28

2.56

2.66

.93

6.81

6.87

Q 4ft

.76

5.15

435

.58

9.13

1.30

a Diverts low-water discharge of headwaters of Makawao and Kaimi streams.

6 Diverts low-water discharge of Kailua Stream.

c Diverts low-water discharge of Kawainui Stream.

d Diverts part of low-water discharge of Waiahole Stream.

ARTESIAN WELLS.

Artesian wells play an important part in connection with the water 

supply of Honolulu and the irrigation of sugar cane.

Records have been kept, more or less continuously, of the heads 

of Oahu wells for the past 30 years. During this period the mean 

yearly head has dropped about 15 feet. During the past dry year 

the heads on the wells dropped so low that many wells became 

seriously impregnated with salt, and the supply was reduced to an 

alarming degree. However, this condition brought to the attention 

of the Territorial officials the great waste that has been going on for 

years from this source of supply. Mr. T. F. Sedgwick, who has been 

making an investigation of the Oahu artesian wells, reports that the 

entire supply from this source for the city of Honolulu from Diamond 

Head to Fort Shafter amounted hi 1912 to about 55 second-feet, 

and of this about one-third was allowed to waste into the sea. The 

following table shows the monthly fluctuation of the wells under 

investigation during 1912: .
ISLAND OF MATJI. 129

Height of water (elevation in feet above sea level) in artesian wells on Oahu in 1912.

Station.

G o v ernment 

stables...... 

Mo Hop....... 

Lund Do Wai. 

SingLoy...... 

Oahu Bailway 

& Land Co. . 

Ah Yin.......

Young Hotel 

Gardens..... 

Mr. Damon's . Waimalu.... . 

Sing Chong. . . 

Warpahu. . . . . 

Honouliuli.. . Waialua.... . 

Kahukuo... . 

Hauula....... 

Oahu Colleges.

Beretania 

street pump 6

Jan.

31.30 

26.20 

26.10 

31.85

31.90 

31.03

29.68 

27.42 

22.75 

19.25 

20.67 

22.27 

12.52 

1.66 

21.27 

/31.65 

\31. 55 

/31. 6fi 

\31. 41

Feb.

30.91 

24.95 

24.65 

31.45

32.20 

30.91

28.95 

27.42 

22.37 

19.55 

21.80 

22.30 

12.47 

1.62 

21.15 

31.50 

31.40 

31.52 

31.37

Mar.

31.00 

25.38 

25.20 

31.60

32.10 

30.87

28.73 

27.60 

22.47 

19.45 

21.22 

22.29 

12.42 

1.23 

20.80 

31.60 

31.50 

31.50 

31.43

Apr.

30.66 

25.14 

24.98 

31.16

31.44 

30.64

29.18 

27.38 

22.42 

19.20 

20.42 

21.89 

12.14 

1.46 

20.96 

31.40 

31.03 

31.39 

31.00

May.

30.10 

24.03 

23.85 

30.61

31.00 

29.96

28.78 

26.46 

21.08 

18.10 

19.35 

20.84 

12.02 

.51 

20.37 

30.90 

30.50 

30.83 

30.43

June.

29.45 

24.10 

23.92 

29.85

30.42 

29-11

28.29 

25.96 

20.53 

18.19 

18.60 

20.18 

11.97 

.62 

19.96 

30.38 

29.70 

30.43 

29.79

July.

28.80 

24.65 

24.41 

29.25

29.47 

28.81

27.38 

25.62 

20.22 

17.45 

18.22 

19.79 

11.72 

.54 

19.37 

29.70 

29.35 

29.68 

29.27

Aug.

28.65 

23.47 

23.15 

28.98

29.52 

28.35

27.33 

25.25 

19.92 

17.15 

18.12 

19.36 

11.62 

.56 

20.08 

29.25 

28.92 

29.31 

28.96

Sept.

28.17 

22.99 

22.70 

28.50

29.22 

28.11

27.13 

25.16 

19.62 

16.95 

17.92 

19.02 

11.46 

.29 

19.57 

28.90 

28.47 

28.98 

28.88

Oct.

28.10 

23.06 

22.80 

28.40

28.82 

27.70

27.18 

24.88 

19.95 

16.90 

17.63 

18.89 

11.45 

.61

"28."40 

28.25 

J28.33

Nov.

28.22 

24.51 

24.35 

28.65

29.04 

28.16

27.53 

25.34 

20. 92 

17^10 

18.12 

19.65 

11.67 

.96 

19.76 

28.52 

28.25 

(28.54 

\28.44

Dec.

28.50 

25.71 

25.65 

29.24

29.57 

28.75

28.27 

26.17 

21.22 

18.49 

19.22 

20.89 

12.12 

1.00 

20.26 

29.25 

28.52 

29.12 

28.65

The year.

Max.

31.30

26.20 

26.10 

31.85

32.20 

31.03

29.68 

27.60 

22.75 

19.55 

21.80 

22.30 

12.52 

1.66

J31.65 

\31.66

Min.

28.10 

22.99 

22.70 

28.40

28.82 

27.70

27.13

24.88 

19.62 

16.90 

17.63 

18.89 

11.45 

.29

28.25 

28.33

a B. M. unsatisfactory; height taken above flange on well. & Maximum and minimum for month. 

ISLAND OP MATTI.

West Maui. 

KAHAKTILOA STEEAM BASIN.

KAHAKTTLOA STREAM AT KAHAKTTLOA, NEAR WAIHEE, MATTI.

Location. About 13 miles northwest of Wailuku at trail bridge of Kahakuloa,

below all diversions.

Records available. August 27 to December 81, 1912. 

Drainage area. Not measured. 

Gage. Staff; datum unchanged. 

Channel. Probably permanent. 

Discharge measurements. Made by wading. 

Accuracy. Good.

Discharge measurements of Kahakuloa Stream at Kahdkuloa, near Waihee, Maui, in

[Hydrographer, J. B. Stewart.J

Date.

Aug. 13

15

28

Sept. 14

Gage 

height.

Feet.

0.82

1.10

.60

.60

Discharge.

Sec.-ft.

13.4

25.5

5.25

4.08

Date.

Oct. 1

4

30

height.

Feet.

0.75

.90

1.40

Discharge.

Sec.-ft.

10.0

14.1

47.7

14694° WSP 336 14
130 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, ofKahakuloa Stream at Kahakuloa, near Waihee, Maui,for 1912.

Day.

1.. ...............

2.................

3.................

4.................

5.................

6.................

7.................

8.................

9.................

10.................

11.................

12.................

13................. 

14.................

15.................

Aug.

......

Sept.

0.65 

.95

.70

.62

60

.65

.78

.68

.60

60

.60

60

.60 

60

.60

Oct.

0.78 

1.05

.78

.62

60

.60

.60

.60

.60

.62

.68

.83

1.15 

1.12

1.52

Nov.

0.72 

.68

.70

.65

.60

.60

.60

60

1.78

7c

.65

.58

.58 

.60

.62

Dec.

1.00

.72

1.45

.75

.68

.65

.95

.80

.78

.68

.60

.60

.60 

.65

.60

Day.

16................. 

17.................

18.................

19.................

20..................

21.................

22.................

23.................

24.................

25.................

26.................

27.................

28.................

29.................

30.................

31.................

Aug.

......

0.60

.60 

.68

.65

.65

Sept.

0.55 

.55

.55

.55

.60

.60

.58

.58

.55

.55

,55

.55

.60 

.70

.88

Oct.

0.78 

.65

.60

.60

.60

.82

1.02

.85

.68

.65

.70

.70

1.08 

.70

.80

.88

Nov.

1.58 

1.05

.90

.82

.82

.95

.85

.78

.70

.62

.68

.65

.60 

.60

.95

Dec.

0.88

.62

.60

.62

.62

.60

1.12

.75

.68

.65

.60

.60

.60 

.68

.68

.60

Daily discharge, in second-feet, of Kahakuloa Stream at Kahakuloa, near Waihee, Maui,

for 1912.

Day.

1.... .............

2.................

3................. 

4.................

5................. 

6.................

7................. 

8.................

9................. 

10.................

11................. 

12................. 

13................. 

14................. 

15.................

Aug.

......

......

......

......

Sept.

6.5

17.5

8.0 

5.6

5.0 

6.5

10.4 

7.4

5.0 

5.0

5.0 

5.0 

5.0 

5.0 

5.0

Oct.

10.4

23.0

10.4 

5.6

5.0 

5.0

5.0 

5.0

5.0 

5.6

7.4 

12.2 

29.0 

27.2 

56.6

Nov.

8.6

7.4

8.0 

6.5

5.0 

5.0

5.0 

5.0

77.4 

9.5

6.5 

4.6 

4.6 

5.0

5.6

Dec.

20.0

8.6

51.0 

9.5

7.4 

6.5

17.5 

11.0

10.4 

7.4

5.0 

5.0 

5.0 

6.5 

5.0

Day.

16.................

17.................

18................. 

19.................

20................. 

21.................

22................. 

23.................

24................. 

25.................

26................. 

27................. 

28.................

29................. 

30.................

31.................

Aug.

......

......

......

......

5io 

7.4 

6.5

6.5

Sept.

4.0

4.0

4.0 

4.0

5.0 

5.0

4.6 

4.6

4.0 

4.0

4.0 

4.0 

5.0 

8.0 

14.2

Oct.

10.4

6.5

5.0 

5.0

5.0 

11.8

21.2 

13.0

7.4 

6.5

8.0 

8.0 

24.8 

8.0 

11.0

14.2

Nov.

61.4

23.0

15.0 

11.8

11.8 

17.5

13.0 

10.4

8.0 

6.6

7.4 

6.5

e.o

5.0 

17.5

Dec.

14.2

5.6

6.0

6.6

6.6 

5.0

27.2 

9.5

7.4 

6.5

5.0 

6.0 

5.0

7.4 

7.4

6.0

Monthly discharge of Kahakuloa Stream at Kahakuloa, near Waihee, Maui, for 1912.

Month.

The period.... ..............................

Discharge in second-feet.

Maximum.

7.4 

17.5 

56.6 

77.4 

51.0

Minimum.

5.0 

4.0 

5.0 

4.6 

5.0

Mean.

6.08 

6.01 

12.20 

12.70 

9.75

Run-off

(total in 

acre-feet).

60.3 

358.0 

750.0 

756.0 

600.0

2,520.0

Accuracy.

B. 

B. 

B. 

B. 

B.

WAIHEE STREAM BASIN. 

WAIHEE STREAM AT DAM NEAR WAIHEE, MAUI.

Location. About 2 J miles west of Waihee at intake of Waihee canal. 

Records available. November 17, 1910, to December 31, 1912. 

Gage. Vertical etaff; read twice daily; datlfm unchanged. 

Channel. Crest of concrete diversion dam.
ISLAND OF MAUI. 131

Discharge measurements. Made by wading and from footbridge. To get total 

flow of Waihee Stream add flow of Waihee canal to discharge at this station.

Accuracy. Records at this point show amount of water passing over the diversion 

dam and do not include flow in Waihee canal.

The following discharge measurement was made by O. T. Bailey: 

December 1, 1912: Gage height, 0.49 foot; discharge, 59.2 second-feet.

Daily gage height, in feet, of Waihee Stream at dam, near Waihee, Maui, for 1912. 

[Joaquin Santos, observer.]

Day.

1.. .............

2.. .............

3...............

5..... ..........

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.20

.20

.10

.00

.00

00

.00

.00

.10

.15

.10

.00

.00

.00

00

.00

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

Feb.

0.00

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

.0

40

.10

.10

.10

.10

.20

1.00

.70

60

.70

.70

.65

60

.60

.50

.20

.10

Mar.

0.15

.70

OK

.40

.50

OK

.60

.50

4n

OK

.40

40

.40

.20°0

w

1.55

1.60 1 'O

1.10

80

oc

.75

60

CA

.10

30

60

.40

50

.50

Apr.

0.50

.70

60 i n&

2 f)(\

1.15 1 30

60

.70

1

CA

.70

OK

CA

en

.70

.70

7E

.85

CA

fin

fin

CA

40

.40

.60

.50

.50

.40

40

May.

0.60

4n

40

.30

.50

.70

.20

sn

.20

on

On

.15

.05

.00

00

.00

.0

.0

.05

.0

.0

.0

.05

.05

.0

.15

.85

.65

.50

.40

OK

June.

0.20

.20

.15

.15

.20

.10

9>i

.15

.10

.10

I nn

.70

.70

.40

30

.70

40

OA

.50

.10

.15

.20

.20

.20

9n

.10

.10

0

0

0

"

July.

0

0.05

.05

.10

Ort

0

.15

on

1.20

2.15

L10

90

.85

50

0

OK

0

0

0

0

.25

0

0

.10

0

0

0

0

0

0

0

Aug.

0

0

0

0

0

0

0

0

.20

0

.20

.20

9>i

.40

CA

.40

0

0

0

0

40

.40

0

0

0

.60

0

0

0

0

0

Sept.

0

0.30

0

0

0

0

on

0

0

0

0

0

0

0

0

0

0

0

0

0

0-

0

0

0

0

0

0

0

0

0

Oct.

0.35

0

.55

.50

0

0

Q

0

0

0

.40

.55

.12

.15

40

.00

0

0

0

0

.60

40

0

0

0

0

.05

.25

0

0

.22

Nov.

0

0

0

0

0

0

0

0

1.10

0

0

0

0

0

.50

i >;n

.70

1.25

0

60

.85

0

.20

.50

.25

.25

.25

.25

.25

.45

Dec.

0.55

.40

1.20

0

0

.35

.40

0

0

0

0

0

0

0

0

.40

0

.45

0

0

0

0

.10

0

e

0

. 0

.55

.05

.20

.05

Daily discharge, in second-feet, of Waihee Stream at dam near Waihee, Maui, for 1912.

Day.

1...............

2...............

3...............

5...............

6...............

7...........:...

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

12.0

4.6

0

0

0

0

4.6

8

0

4.6

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

4.6

4.6

4.6

4.6

19 A

152.0

90.0

Mar.

8.3

90.0

17.0

36.0

53.0

29.0

71.0

53.0

36.0

on n

36.0

36.0

19 f\

19 n

53.0

275.0 007 n

195.0

173.0

Apr.

53.0

90.0

71.0

275.0

435.0

184.0

217.0

71.0

71.0 90 0

90 0

29 0

w (\

53.0

on n

on n

100.0

120.0

53.0

May.

71.0

36.0

36.0

99 A

eq A

on n

19 n

99 n

12.0 19 n

19 fl

8

0

2

0

0

0

0

0

0

2

9

0

June.

19 A

19 n

8.3

8 q

19 n

4.6

17.0

8.3

4.6

152.0 QA ft

on n

36.0

99 A

on n

36.0 99 n

4.6

July.

0

2

0

2.3

4.6

99 f\

0

8

0

22 0

195.0

422.0

m A

131.0

120.0

53.0

0

17.0

0

0

0

0,

Aug.

0

0

0

0

0

0

0

0

19 n

0

19 A

19 A

17.0

36.0

53.0

36.0

0

0

0

0

Sept.

0

99

0

0

0

0

99

0

0

0

0

0

0

0

0

0

0

0

0

0

Oct.

29.0

0

62.0

53.0

0

0

0

0

0

0

36.0

62.0

6.1

8.3

sfi n

0

0

0

0

0

Nov.

0

0

0

0

0

0

0

0

173.0

0

0

0

0

0

53.0

263.0

90.0

206 0

0

71.0

Dec.

62.0

36.0

195.0

0

0

29.0

36.0

"

36.0

0

44.5

0

0
132 WATEE EESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, of Waihee Stream at dam near Waihee, Maui, for 1912

Continued.

Day.

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0

0

0

0

0

0

0

0

0

0

0

Feb.

71.0

90.0

on ft

&n *

71.0

71 0

53.0

12.0

4.6

Mar.

110.0

120.0

100.0

71.0

KI n

4.6

22.0

71.0

*>fi ft

53.0

53.0

Apr.

53.0

71.0

53.0

36.0

36.0

71.0

CO ft

53.0

36.0

36.0

May.

0

0

2

0

2

0

0

8.3

120.0

80.5

53.0

36.0

17.0

June.

8.3

19 ft

12.0

12.0

19 ft

4 6

4.6

0

0

0

July.

17.0

0

0

4.6

0

0

0

0

0

0

0

Aug.

36.0

36.0

0

0

0

71.0

0

0

0

0

0

Sept.

0

0

0

0

0

0

0

0

0

0

0

Oct.

71.0

36.0

0

0

0

0

2.3

17.0

0

0

14.0

Nov.

120.0

0

19 ft

53.0

17.0

17.0

17.0

17.0

17.0

44.5

Dec.

0

0

4.6

0

0

0

0

62.0

2.3

12.0

2.3

Monthly discharge of Waihee Stream at dam near Waihee, Maui, for 1912.

Month.

May......................*.......................

July...............................................

Discharge in second-feet.

Maximum.

12.0

152.0 

287.0 

435.0 

120.0 

152.0 

422.0 

71.0 

22.0 

71.0 

263.0 

195.0

435.0

Minimum .

0.0 

.0 

4.6 

29.0 

.0 

.0 

.0 

.0 

.0 

.0 

.0 

.0

.0

Mean.

1.49 

29.40 

72.00 

99.90 

22.90 

25.10 

38.50 

10.40 

1.47 

14.00 

39.00 

16.80

30.80

Run-off 

(total in 

acre-feet).

91.6 

1,690.0 

4,430.0 

5,940.0 

1,410.0 

1,490.0 

2,370.0 

640.0 

87.5 

861.0 

2,320.0 

1,030.0

22,400

Accuracy.

C. 

B. 

B. 

B. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C.

WAIHEE CANAL NEAR WAIHEE, MAUI.

Location. About 2 miles west of Waihee and one-half mile below canal intake; 5£

miles above Wailuku.

Records available. November 17, 1910, to December 31, 1912. 

Gage. Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; datum unchanged. 

Channel. Cement lined. 

Discharge measurements. Made from plank at gage. Gage read with diversion

Discharge measurements of Waihee canal near Waihee, Maui, in 1912. 

[Hydrographer, J. B. Stewart.]

Date.

March?......................

JulyS........................

Gage 

height.

Feet.

1 RK

2.15

1.82

Discharge.

Sec.-ft. 

41.6

55.7

45.6

Date.

October 29 ...................

height.

Feet. 

1.85

1.60

Discharge.

Sec.Jt. 

52.4

41.4
ISLAND OF MATJI. 133

Daily gage height, in feet, of Waihee canal near Waihee, Maui,for 1912. 

[Joaquin Santos, observer.]

Day.

1..... ..........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...... ...... ...

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

97

28...............

29...............

30...............

31...............

Jan.

2.20

2.23

2.20

2.15

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2 00

2 00

2.00

2.00

i on

1.90

1.90

1.90

Feb.

1.90

1.90

1.90

1.90

1.90

1.90

1.90

1.90

1.90

1.90

1.90

1.90

2.20

2.20

2.20

2.20

2.20

2.20

2.20

2 on

2.20

2.20

2.60

2 60

2.40

2.40

9 on

2.20

2.20

Mar.

2.20

2.20

2.20

2.15

2.15

2.20

2.20

2.40

2.40

2.40

2.30

2.20

2.20

2.20

2.40

2.30

2.30

2.20

2.15

2.15

2.10

2.20

2 oft

2 oft

2.15

2.10

2.10

2.10

2.10

2.05

2.10

Apr.

2.30

2.15

2.20

2.20

2.20

2.20

2.20

2.20

2.20

2.30

2.20

2.15

2.15

2.15

2 10

2.50

2.50

2.40

2 30

2 sn

2.20

2.20

2 ^n

2.30

2.10

2.20

2.20

2.30

2.2Q

2.20

May.

2.15

2.20

2.50

2.40

2.55

2.30

2.15

2.20

2.20

9 in

2.00

2.00

1.90

1.95

i on

1.90

1.90

1.90

i on

I on

1.90

2.05

2.10

2.15

1 95

2.05

2.10

2.65

2.40

2.30

2.40

June.

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2.10

2

1f|

2.40

2.40

2.50

2.50

O eft

2.40

2.20

2.20

2.10

2

ftE

2 1ft

2 in

2

ift

2 1 K.

2.20

2.20

2.15

O OK

2.15

2.15

July.

2.10

2.15

2.20

2.20

2.25

2.25

2.25

2.25

2.40

2.30

2.40

2.40

2.40.

2.40

2.05

2.15

2.00

2.00

2.05

1 Q^

2.25

2.05

1 Oft

2.15

1 90

1.90

9 nt?

1 80

1.90

1.80

1.80

Aug.

1.80

1.80

1.80

1.80

1.90

1.80

1.80

1.80

2.20

1.95

2.25

2.30

2.40

2.25

O oft

2.35

2.05

2.00

1.85

1.80

0.00

2.20

1 ftft

1 ftf*

1 ftf*

2.05

1.70

1.75

i on

i »>; 

1.70

Sept.

1.70

2.30

1.70

1.70

1.85

1.70

1.95

1.70

1.65

1.65

1.40

1.60

1.60

1.60

1.60

1.60

1.60

1.70

1 80

1.70

1.60

1.60

1.60

1.65

1.65

1.75

1.65

1.85

1.80

1.60

Oct.

2.00

1.75

2.00

2.10

1.75

1.60

1.65

1.60

1.70

1.65

2.05

1.95

2.15

2.00

2.10

1.75

1.95

1.85

1.65

1.60

2.15

2.25

9 115

1.80

1.65

1.95

2

1ft

2.00

1.60

1.60

Nov.

1.65

1.60

1.60

1.70

1.60

1.60

1.60

1.75

2.30

1.85

1.65

1.60

1.55

1.50

1.85

2.30

2.25

1.10

1.90

2.25

2.30

2.10

9 on

.00

.85

.80

.80

.80

.80

2.00

Dec.

0.85

1.80

1.70

1.70

2.00

2.10

1.65

1.60

1.60

1.60

1.60

1.60

1.60

1.60

1.95

1.60

1.75

1.85

1.70

1.70

1.60

1.90

1.60

1.80

1.70

1.60

1.90

1.80

2.00

1.80

NOTE. On July 27 a small board was substituted for a larger one in the canal below the gage; gage height 

of 1.7, beginning July 27, equivalent to 1.8 before that date.

WAIHEE CANAL AT WEIR NEAR WAILTTKU, MATTI.

Location. About half a mile above Wailuku and about 1,000 feet below the inverted

siphon crossing lao Valley.

Records available. January 1, 1911, to December 31, 1912. 

Discharge. Measured by 14-foot sharp-crested weir, without end contractions. 

Cooperation. Records furnished by Hawaiian Commercial & Sugar Co.

Daily discharge, in million gallons, of Waihee canal at weir near Wailuku, Maui, for 1912.

Day.

1.. .............

2. ..............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Jan.

19.80

16.80

16.10

15.10

14.30

13.40

14.60

18.40

16.40

15.50

15.40

iq OA

13.70

14.40

14.80

Feb.

11.40

12.90

17.40

14.40

13.70

12.70

12.50

11.70

11.60

10.60

13.00

n

EA

OQ Qft

18.30

12.40

Mar.

19.30

19.00

21.40

17 QA

17.60

19.10

21.80

13.40

21.00

94 7(1

17.70

IS 9ft

17 Qft

14.70

Apr.

22.40

28.60

37.40

OQ Oft

26.10

33.00

40 10

29.80

27.70

28.20

OQ ">ft

42.00

OC fift

56.40

28.90

May.

19 80

26.10

94 <*n

18.30

17.60

IQ 7ft

17. 10

17.10

18.30

18.10

17 Oft

17.50

16.00

IQ Qft

13.10

June.

14.00

14.50

13.40

11.80

13.10

19 7(1

13.40

10 QA

10 Qft

24.60

93 7n

10 on

10 Kf\

22 80

23.80

July.

13.30

11.40

11.50

19 rtft

17.00

15.60

15.80

23.80

qo qrt

32.10

20 40

OQ Aft

on QA

f\A QA

15.40

Aug.

11.20

11.40

11.00

11.00

11.30

11.70

12.40

11.70

11.60

12.60

16.10

10 QA

fO Qft

21.10

20.60

Sept.

9 77

13 <?n

10.50

10.20

11.20

19 7ft

11.00

11.30

11.00

W Of|

10.60 9 80

9 00

9.70

Oct.

13.20

15.90

11.80

20.80

14.20

11.10

10.80

10.80

10.60

12.10

20 00

99 QA

91 nn

99 7rt

13.50

Nov.

19 7ft

13.30

10.40

9

0Q

10.20

9

00

9 77

12.40

33.60

14.00

Q QQ

Q CD

9

07

Q fi7

16.80

Dec.

90 9rt

15.20

34.50

15.60

14.30

IQ °.fi

35.80

35.40 IQ on

14.30

14.00

IQ 4ft

1 f* 411

14.40
134

Daily dit

WATER RESOURCES OF HAWAII, 1912.

'e, in million gallons, of Waihee canal at weir near Wailuhl, Maul, for 

1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22.. .............

23...............

24...............

25...............

26...............

27...............

23...............

29...............

30............... 

31...............

Jan.

13.20

12.10

12.70

12.30

12.30

13.00

10.90

11.50

11.50

11.50

10.40

10.10

9.75

9.82

10.80 

11.60

Feb.

11.00

11.30

11.20

40.50

45.40

22.90

9.50

15.00

16.40

30.10

22.00

22.00

15.50

12.30

Mar.

17.00

20.10

25.40

22.30

23.30

99 tn

18.90

17.60

17.30

17.20

93 nn

91 fin

22.30

22.20

26.60 

29.40

Apr.

38.10

34.00

28.70

30.50

28.30

26.00

26.40

22.10

21.40

18.30

24.50

17.50

19.10

16.60

16.40

May.

14.60

14.30

14.20

16.30

14.30

15.10

13.60

13.20

18.90

16.60

oq on

30.50

20.43

23.20

16.20 

15.00

June.

19.30

13.80-

13.90

12.80

13.50

17.10

14.40

14.60

18.50

13.20

14.40

16.00

13.60

13.50

13.50

July.

16.80

14.30

13.70

14.70

13.80

17.90

14.40

13.20

13.20

11.10

11.20

11.70

12.60

11.60

12.10 

11.80

Aug.

18.60

14.10

11.90

12.30

11.30

9.33

13.00

10.80

9.86

9.63

19.70

16.60

10.30

11.60

10.50

Sept.

9.87

9.60

11.30

10.70

11.50

10.30

10.00

10.10

8.50

9.07

10.20

10.70

10.70

12.00

20.00

Oct.

11.40

11.90

11.00

10.10

12.70

12.90

14.50

13.30

11.50

10.10

12.30

16.60

16.30

11.20

12.70 

13.20

Nov.

39.40

29.00

31.60

18.10

27.40

28.60

24.10

12.70

15.20

12.40

12.00

8.03

9.33

9.20

18.20

Dec.

23.30

13.70

21.50

19.10

12.60

27.20

34.10

22.20

16.30

26.00

17.90

15.90

17.30

13.50

16.10 

21.70

Monthly discharge of Waihee canal at weir near Wailuku, Maui, for 191%.

Month.

February. ...............................................

April....................................................

May.....................................................

July.....................................................

September. ..............................................

December

The year. ..........................................

Discharge in million gallons.

Maximum.

19.80 

45.40 

29.40 

56.40 

30.50 

24.60 

32.30 

21.10 

20.00 

22.90 

39.40 

35.80

56.40

Minimum.

9.75 

9.50 

13.40 

16.40 

13.10 

11.80 

11.10 

9.33 

8.50 

10.10 

8.03 

12.60

8.03

Mean.

13.4 

17.0 

20.3 

28.8 

17.8 

15.9 

16.6 

13.0 

10.9 

14.0 

16.2 

20.1

17.0

Run-off 

(total in 

million 

gallons).

415 

492 

629 

864 

552 

477 

514 

390 

328 

433 

485 

622

6,200

SPRECKELS DITCH NEAR WAIHEE, HAUL

Location. About 2 miles west of Waihee and about 500 feet below intake^

Records available. November 17, 1910, to December 31, 1912.

Gage. Vertical staff; read twice daily, at about 4 a. m. and 3.30 p. m. September 7,1912, gage was removed to a point a short distance upstream and placed at 

new datum.

Channel. Probably permanent.

Discharge measurements. Made by wading.

Cooperation. Station maintained in cooperation with East Maui Ditch Co.

Discharge measurements of Spreckels ditch near Waihee, Maui, in 1912.

Date.

July 3

Aug. 6

Sept. 7

Hydrographer.

.....do.............

.....do.............

Gage 

height.

Feet. 

0.24

.15

.30

Discharge.

Sec.-ft. 

2.06

1.01

2.82

Date.

Oct. 29

Hydrographer.

J. B. Stewart ......

C.T. Bailey........

&,

Feet. 

0.21

1.66

Discharge.

Sec.-ft. 

1.67

58.7
ISLAND OF MAUI. 135

Daily gage height, in feet, of Spreckels ditch near Waihee, Mam, for 191%'.. 

[Joaquin Santos, observer.]

Day.

1..... ..........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.40

.40

.60

.50

.30

.20

.20

.20

.20

.20

.15

.10

.10

.10

.00

.00

no

.00

.10

.10

.00

.00

.00

.00

.05

.10

.10

.10

.10

.10

.10

Feb.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

1.00

.60

.60

.40

.40

.60

1.00

.70

.80

1.20

1.60

1.50

.55

1.40

1.40

1.20

1.20

.......

Mar.

1.30

1.20

1.20

1.20

1.50

1.20

1.00

1.20

1.20

1.20

1.20

1.10

1.10

1.10

1.10

1.25

1.20 i sn

1.10

1.15

.80

.70

.60

.40

.40

.40

.80

.60

.70

.50

.50

Apr.

1.25

1.65

1.80

1.70

1.60

1.50

1.70

1.50

.95

.80

.SO

.70

.70

.80

.60

1.90

1.70

1.25

1.10

1.20

.70

.60

.70

.90

.70

.50

.40

.70

.50

.40

May.

0.30

.50

.60

.40

.30

.40

.50

.70

.60

.50

.40

.35

.30

.25

.20

.20

.20

.20

.20

.25

.15

.20

.15

.15

.15

.20

1.50

1.70

1.70

.80

1.50

June.

0.75

.50

.20

.15

.15

.10

.15

.10

.10

.05

1.50 1 no

.90

.95

.80

.45

.50

.30

.30

.20

.50

.40

.15

sn

.20

OA

.15

.15

.10

.10

July.

0.10

.10

.10

.15

1.00

.62

.70

.90

1.75

1.05

1.60

1.70

1.60

1.15

.20

.85

.20

.20

.20

.20

.60

.20

.20

.45

.20

.20

.22

.20

.20

.20

.20

Aug.

0.20

.20

.20

.20

.20

.18

.15

.20

.60

.25

.60

.70

.65

.90

1.05

1.00

.15

.15

.15

.15

1.20

1.45

.15

.15

.15

.92

.00

.00

.00

.00

.15

Sept.

0.15

.85

.15

.15

.15

.15

.90

.20

.20

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.30

.15

.20

.20

.15

.18

Oct.

0.?2

.20

.90

1.00

.18

.15

.15

.15

.20

.25

.90

.90

.55

.65

1.00

.20

.20

.20

.18

.20

1.35

1.30

.20

.20

.20

.20

.50

1.00

.25

.30

1.05

Nov.

0.20

.20

.20

.20

.20

.20

.20

.20

1.80

.25

.20

.20

.20

.20

1.00

1.80

1.40

1.80

.30

1.10

1.75

.35

.70

1.40

.90

.80

.80

.80

.80

1.05

Dec.

1.70

1.10

1.80

.40

.30

.95

1.05

.30

.40

.25

.25

.20

.20

.20

.20

1.00

.30

1.10

.45

.30

.30

.30

.30

.30

.40

.30

.35

1.02

.55

1.00

.45

WAIEHU STEEAM BASIN. 

NORTH WAIEHTT STREAM NEAR WAILTTKTT, MATTI.J

Location. About 2J miles northwest of Wailuku, 1 mile above Waihee Canal crossing, and 50 feet above the intake of the North Waiehu ditch. 

Records available. July 9 to December 31, 1912.

Gage. Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged. 

Channel. Probably shifting; bed of stream of gravel and small bowlders. 

Discharge measurements. Made by wading. 

Accuracy. Good. 

Cooperation. Station is maintained in cooperation with Wailuku Sugar Co.

Discharge measurements of North Waiehu Stream near Wailuku, Mam, in 1912. 

[Hydrographer, J. B. Stewart.]

Date.

July 5..... ...................

8........................

13........................

 ».

Feet.

a 1.10

.65

.65

Discharge.

Sec.-ft. 9 n<?

5.51

5.52

Date.

July 16. ......................

Sept. 6.. .....................

Oct. 28.... ...................

&.

Feet. 

0.63

.62

.77

Discharge.

Sec.-ft. 

5.09

4.13

8.92

Old gage.

i This station replaces the two stations formerly maintained on North Waiehu Stream and North 

Waiehu ditch.
136 WATER RESOURCES OP HAWAII, 1912.

Daily gage height, in feet, of North Waiehu Stream near Wailuku, Maui, for

[E. Soper, observer.]

Day.

1. .........

2..........

3..........

4..........

5..........

6..........

7. .........

8..........

9..........

10..........

11..........

12..........

13..........

14..........

15..........

July.

......

..O.'TO"

.68

.65

.65

.68

.65

.60

Aug.

0.60

.60

.60

.60

.60

.60

.60

.60

.60

.60

.62

.64

.61

.62

.64

Sept.

0.60

.62

.60

.60

.60

.60

.61

.60

.60

.60

.60

.60

.60

.60

.60

Oct.

0.60

.68

.62

.88

.65

.65

.65

.65

.65

.65

.64

.70

.74

.75

.70

Nov.

0.65

.65

.65

.65

.65

.65

.62

.66

.70

.65

.62

.62

.62

.62

Dec.

ft U« 79t£i

.70

.78

.70

.68

.60

.65

.60

.60

.60

.60

.60

.60

.60

.CO

Day.

16..........

17..........

18..........

19..........

20..........

21..........

22..........

23..........

24..........

25..........

26..........

27..........

2?. .........

29..........

33..........

31

July.

0.60

.60

.60

.62 .60'

.60

.60

.60

.60

.60

.60

.60

.60

.60

.60

.60

Aug.

0,62

.60

.60

.60

.60

.60

.65

.60

.60

.60

.60

.60

.60

.60

.60

.60

Sept.

0.60

.60

.60

.60

.60

.60

.60

.65

.60

.60

.62

.61

.68

.61

.CO

Oct.

0.65

.65

.65

.65

. .65

.66

.70

.68

.65

.65

.65

.70

.68

.65

.65

.65

Nov.

0.80

.70

.70

.65

.75

.70

.70

.70

.70

.70

.70

.65

.65

.65

.78

Dec.

0.60

.68

.60

.60

.60

.61

.60

.60

.60

.60

.60

.60

.60

.60

.60

.60

Daily discharge, in second-feet, of North Waiehu Stream near Wailuku, Maui, for 1912.

Day.

1. ......... 

2. .........

0

4.......... 

5..........

6..........

7.......... 

8..........

9..........

10..........

11..........

12.......... 

13..........

14.......... 

15..........

July.

......

......

......

6.8

6.3

5.5

5.5 

6.3

5.5

4.2

Aug.

4.2 

4.2

4.2

4.2 

4.2

4.2

4.2 

4.2

4.2

4.2

4.7

5.2 

4.5

4.7 

5.2

Sept.

4.2 

4 7

4.2

4.2

A. 9

4.2

4.4 

4.2

4.2

4.2

4.2

4.2 

4.2

4.2 

4.2

Oct.

4.2 

6.3

4 7

IS. 2 

5.5

% 1

5.5 

5.5

5.5

5.5

5.2

6.8 

8.1

8.4

Nov.

5.5 

5.5

5.5

5.5 

<; <;

5.5

4.7 

5.8

6.8

5.5

4.7

4.7 

4.7

4.7 

4.7

Dec.

7.4 

6.8

9 4

6.8 

6.3

4.2

5.5 

4.2

4.2

4.2

4.2 

.4.2

4.2 

4.2

Day.

16.......... 

17..........

18..........

19.......... 

20..........

21..........

22..........

23..........

24..........

25..........

26..........

27.......... 

28..........

29.......... 

30..........

31..........

July.

4.2

4 ?,

4.2

4.7 

4?

4.2

4.2 

4.2

4 ?,

4.2

4.2

4.2 

4.2

4.2 

4.2

4.2

Aug.

4.7 

4.2

4.2

4.2 

4.2

4.2

5.5

4.2

4.2

4.2

4.2

4.2 

4.2

4.2 

4.2

4.2

Sept.

4.2 

4.2

4.2

4.2 

4.2

4.2

4.2 

5.5

4.2

4.2

4.7

4.5 

6.3

4.5 

4.2

Oct.

5.5 

5.5

5.5

5.5 

5.5

5.8

6.8 

6.3

5.5

5.5

5.5

6.8 

6.3

5.5

5.5

5.5

Nov.

10.0 

6.8

6,8

5.5 

8 4

6.8

6.8 

6.8

6,8

6,8

6.8

5.5

5.5

5.5 

9,4

Dec.

4.2

6.3

4.2

4.2

4.2

4.5

4.2 

4.2

4.2

4.2

4.2

4.2 

4.2

4.2 

4.2

4.2

Monthly discharge of North Waiehu Stream near Wailuku, Maui, for 1912,

Month.

July...............................................

Discharge in second-feet.

Maximum.

6.8 

5.5 

6.3 

13.2 

10.0 

9.4

Minimum.

4.2 

4.2 

4.2 

4.2 

4.7 

4.2

Mean.

4.69 

4.36 

4.40 

6.10 

6.12 

4.83

Run-off 

(total in 

acre-feet).

214.0 

268.0 

262.0 

375.0 

364.0 

297.0

1,780.0

Accuracy.

B. 

B. 

B. 

B, 

B. 

B.

SOUTH WAIEHU STREAM NEAR WAILUKU, MAUL'

Location. About 1J miles northwest of Wailuku and 75 feet below diversion dam

for South Waiehu ditch.

Records available. July 10 to December 31, 1912.

Gage. Inclined-staff gage; read daily, at 5 a. m. and 5 p. m.; datum unchanged 

Channel. Shifting.

i This station replaces the one formerly maintained at the diversion dam.
ISLAND OF MAUI. 137

Discharge measurements. Made by wading. 

Accuracy. A discharge rating has not yet been obtained. 

Cooperation. Station maintained in cooperation with Wailuku Sugar Co.

Discharge measurements of South Waiehu Stream near Wailuku, Maui, in 191%.

Date.

July 10

16

Sept. 6

Dec. 1

Hydrographer.

J. B. Stewart. ............................................................

.....do...................................................................

.....do....................................................................

C.T. Bailey. .............................................................

&,

Feet. 

0.30

.28

.33

.34

Discharge.

Sec.-ft. 

0.20

.15

.20

.20

Daily gage height, in feet, of South Waiehu Stream near Wailuku, Maui, for 1912.

Day.

1. ................ 

2.................

3.................

4.................

5.................

6.................

7.................

8................. 9...:.............

10.................

11.................

12................. 

13................. 

14................. 

15.................

Aug.

0.40 

.45

.48

.45

.45

.45

AK

.45

.50

.50 

.55

.55 

.45 

.52 

.60

Sept.

0.40 

.65

.40

.40

.40

.40

.40

.40

.40

.40 

.40

.40 

.40 

.40 

.40

Oct.

0.40 

.65

.45

.60

.45

.45

.42

.40

.40

.'40 

.40

.40 

.55 

.50 

.40

Nov.

0.40 

.40

.40

.40

.40

.40

.40

.40

.80

.48 

.40

.40 

.40 

.40 

.50

Dec.

0.40 

.40

.85

.40

.40

.60

Qft

.40

.40

v40 

.40

.40 

.40 

.40 

.40

Day.

16................. 

17.................

18.................

19.................

20.................

21.................

22.................

23.................

24.................

25.................

26.................

27................. 

28.................

29................. 

30................. 

31.................

Aug.

0.45 

.45

.40

.40

.40

.40

.52

.42

.40

.40 

.52

.45 

.45 

.45 

.45 

.40

Sept.

0.40 

.40

.40

.40

.40

.40

.50

.45

.45

.45 

.45

.40 

.40 

.40 

.40

Oct.

0.40 

.40

.40

.40

.40

.60

AQ

.40

.40

.40 

.40

.40 

.40 

.40 

.40 

.40

Nov.

0.80 

.48

.75

.40

.48

.60

At{

.40

.40

.40 

.40

.40 

.40 

.40 

.40

Dec.

0.75 

.45

.40

.40

.40

.45

.52

.40

.40

.40 

.40

.40 

.40 

.40 

.40 

.40

IAO STREAM BASIN. 

IAO STREAM NEAR WAJLTTKIT, MATTI.

Location. About 3 miles west of Wailuku and one-fourth mile below the forks of

- the stream.

Records available. May 7, 1910, to December 31, 1912. 

Drainage area. Not mapped. 

Gage. Friez clock register; datum unchanged.

Channel. Rough; several changes in control since station was established. 

Discharge measurements. Made by wading and from cable and car at gage. 

Accuracy. Records very good.

Discharge measurements of lao Stream near Wailuku, Maui, in

Date. 

July IS

Aug. 30

Hydrographer.

J. B. Stewart. ............................................................

.....do....................................................................

Gage 

height.

Feet. 

2.90

2.78

Discharge.

Sec.-ft. 

38.5

24.9
138 WATEE RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, oflao Stream near Wailuku, Maui,for 1912. 

[F. G. Duarte, observer.]

Day.

1...... .........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.82

2.80

2.78

2.73

2.72

2.67

2.73

3.00

2.80

2.70

2.67

2.68

2.70

2.68

2.67

2.66

2.66

2.66

2.65

2.65

2.64

2.63

2.63

2.71

2.65

2.63

2.65

2.67

2.66

2.74

2.78

Feb.

2.70

3.30

3.20

3.02

2.98

2.90

2.87

2.86

2.84

2.91

3.04

2.93

3.04

2.99

2.96

2.97

2.98

2.99

4.22

4.10

3.92

3.60

3.53

3.51

3.33

3.60

4.25

3.77

3.30

.......

Mar.

3.69

3.95

3.94

3.46

3.42

3.43

3.48

3.25

3.82

3.85

4.36

4.20

3.98

3.53

3.28

3.14

3.47

3.64

3.46

3.38

3.19

3.10

3.02

3.14

3.13

3.08

3.26

3.30

3.90

3.76

Apr.

3.54

3.63

3.78

4.43

4.62

3.84

4.20

3.92

3.52

3.38

3.48

3.73

3.38

3.74

3.34

3.68

3.44

3.24

3.17

3.39

3.38

3.27

3.26

3.17

3.08

3.25

3.08

3.02

2.99

2 QQ

May.

2.98

2.98

2.94

2.92

3.22

3.08

3.08

3.22

3.08

3.16

3.12

2.90

2.90

2.88

2.87

2.90

2.88

2.90

2.87

2.81

2.82

2.77

2.76

3.02

2.85

3.25

3.35

3.18

3.10

3.05

2. .98

June.

2.90

2.85

2.82

2.80

2.79

2.79

2.85

3.02

2.85

3.08

3.05

3.02

2.98

3.10

3.10

2.98

2.98

2.85

2.82

2.80

2.95

2.81

3.04

3.00

2.81

2.78

2.73

2.71

2.70

2.67

July.

2.71

2.72

2.74

2.78

2.78

2.72

2.82

3.25

3.65

3.17

3.18

3.32

3.29

3.05

2.92

2.93

2.87

2.81

2.80

2.81

3.02

2.92

2.85

2.90

2.83

2.83

2.84

2.71

2.72

2.67

2.65

Aug.

2.65

2.68

2.68

2.65

2.62

2.65

2.80

2.75

2.85

2.90

2.95

2.87

2.85

2.98

3.35

3.10

2.88

2.80

2.78

2.78

2.77

2.95

2.78

2.73

2.68

3.17

2.95

2.79

2.82

2.77

2.72

Sept.

2.68

2.90

2.72

2.78

2.70

2.85

3.00

2.78-

2.78

2.72

2.68

2.66

2.62

2.60

2.61

2.61

2.67

2.65

2.70

2.75

2.68

2.58

2.62

2.58

2.57

2.75

2.78

2.93

3.19

3.01

Oct.

2.92

3.02

2.80

3.09

2.95

2.80

2.85

2.79

2.78

2.82

3.02

3.03

3.08

3.45

3.02

2.90

2.85

2.81

2.72

2.68

2.85

3.00

2.88

2.80

2.78

2.95

3.10

3.05

2.80

2.88

3.15

Nov.

2.81

2.78

2.72

2.70

2.68

2.68

2.71

3.00

3.89

3.07

3.00

2.90

2.84

2.82

2.88

4.02

3.61

3.62

3.28

3.42

3.60

3.25

3.12

2.92

2.83

2.80

2.78

2.75

2.72

3.00

Dec.

2.95

2.88

3.25

2.95

2.85

2. ft1!

3.21

3.08

2.95

2.88

2.82

2.80

2.80

2.85

2.80

2.85

2.81

8.14

3.07

2.93

3.30

3.32

3.32

3.03

3.24

3.17

2.98

3.05

2.94

9 OR

2.95

Daily discharge, in second-feet, oflao Stream near Wailuku, Maui,for 1912.

Day.

1.... ...........

2...............

3...............

4...............

5...............

6................

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

31.2

30.0

28.8

25.8

25.2

22.5

25.8

43.0

30.0

24.0

22.5

23.0

24.0

23.0

22.5

22.0

22.0

22.0

21.5

21.5

21.0

20.5

20.5

24.6

21.5

20.5

21.5

22.5

22.0

26.4 

28.8

Feb.

24.0

67.0

58.0

44.4

41.6

36.0

34.2

33.6

32.4

36.7

45.8

38.1

45.8

42.3

40.2

40.9

40.2

36.0

203.0

178.0

145.0

100.0

91.6

89.2

70.0

100.0

210.0

123.0

67.0

Mar.

112.0

150.0

149.0

83.6

79.2

80.3

85.8

62.5

130.0

134.0

235.0

199.0

156.0

91.6

65.2

84.7

105.0

83.6

79.2

75.0

57.2

50.0

A A A

53.2

52.4

48.6

63.4

67.0

142.0 

121.0

Apr.

92.8

104.0

124.0

252.0

302.0

133.0

199.0

145.0

90.4

75.0

85.8

117.0

75.0

119.0

71.0

110.0

81.4

«1.6

55.6

76.0

75.0

64.3

63.4

55.6

48.6

62.5

48.6

44 4

42.3

42.3

May.

41.6

41.6

38.8

37.4

59.8

48.6

48.6

59.8

48.6

54.8

51.6

36.0

36.0

34.8

34.2

36.0

34.8

36.0

34.2

30.6

31.2

28.2

27.6

44.4

33.0

62.5

72.0

56.4

50.0

46.5 

41.6

June.

56.0

33.0

31.2

30.0

29.4

29.4

33.0

44.4

33.0

48.6

46.5

44.4

41.6

60.0

50.0

41.6

41.6

33.0

31.2

30.0

39.5

30.6

45.8

43.0

30.6

28.8

25.8

24.6

24.0

22.5

July.

24.6

25.2

26.4

28.8

28.8

25.2

31.2

62.5

106.0

55.6

56.4

69.0

66.1

46.5

37.4

38.1

34.2

30.6

30.0

30.6

44 4

37.4

 > > n

36.0

31.8

31.8

32.4

94 fi

OK 0

22.5 

21.5

Aug.

21.5

23.0

23.0

21.5

20.0

21.5

30.0

27.0

33.0

36.0

39.5

34.2

33.0

41.6

72.0

50.0

34.8

30.0

28.8

28.8

28.2

39.5

28.8

25.8

23.0

55.6

39.5

90 A

o-i o

28.2 

25.2

Sept.

23.0

36.0

25.2

28.8

24.0

33.0

43.0

28.8

28.8

25.2

23.0

22.0

20.0

19.0

19.5

19.5

22.5

21.5

24.0

97 n

95 fi

loo

20.0

 to o

17.8

97 rt

28.8

38.1

67.2

43.7

Oct.

37.4

44.4

30.0

49.3

39.5

30.0

33.0

90 A

28.8

31.2

Ad A

45.1

48.6

82.5

44.4

36.0

33.0

30.6

OK 9

23.0

33.0

43.0

HA Q

30.0

OC Q

4Q *

50.0

46.5

30.0

34.8 

54.0

Nov.

30.6

28.8

25.2

24.0

23.0

23.0

24.6

43.0

140.0

47.9

43.0

36.0

32.4

31.2

34.8

163.0

101.0

103.0

65.2

7Q 9

100.0

62.5

51.6

37.4

31.8

30.0

28.8 97 n

9K 9

43.0

Dec.

39.5

34.8

62.5

39.5

33.0

39.5

£8.9

48.6

39.5

34.8

VI 9

30.0

30.0

33.0

30.0

33.0

30.6

63.2

A7 O

38.1

67.0

69.0

AQ f\

45.1

61.6

65.6

41.6

AH fi

39.5

41.6 

39.5
ISLAND OF MAUI. 139 

Monthly discharge of lao Stream near Wailuku, Maul, for 1912.

Month.

April..............................................

May...............................................

July...............................................

The year. ...................................

Discharge in second-feet.

Maximum.

43.0 

210.0 

235.0 

302.0 

72.0 

50.0 

106.0 

72.0 

57.2 

82.5 

163.0 

69.0

302.0

Minimum.

20.5 

24.0 

44.4 

42.3 

27.6 

22.5 

21.5 

20.0 

17.8 

23.0 

23.0 

30.0

17.8

Mean.

24.5 

72.9 

96.6 

97.2 

 43.1 

35.8 

38.5 

32.4 

26.9 

38.4 

51.2 

44.0

50.0

Run-off 

(total in

acre-feet).

1,510 

4,190 

5,940 

5,780 

2,650 2,130' 

2,370 

1,990 

1,600 

2,360 

3,050 

2,710

36,300

Accuracy.

B.

A. 

A. 

A. 

A. 

B. 

B. 

B. 

B. 

B. 

A. 

A.

MANIANIA DITCH NEAR WAILUKU, MAUI.

Location. About 2J miles west of Wailuku and 800 feet below intake.

Records available. November 14, 1910, to December 31, 1912.

Gage. Vertical staff; read twice daily; gage moved about December 30,1911; new

. location and datum. 

Channel. Probably permanent.

Discharge measurements. Made from plank 50 feet above gage. 

Accuracy. Fair. 

Cooperation. Station maintained in cooperation with Wailuku Sugar Co.

Discharge measurements of Maniania ditch near Wailulu, Maui, in 1912.

Date.

July 9

Dec. 9

Hydrographer.

C.T. Bailey.. ............................................................

Gage

Feet. 

1.50

1.10

Discharge.

Sec.-ft. 

30.0

19.8

Daily gage height, in feet, of Maniania ditch near Wailuku, Maui, for 1912.

Day.

1. ..............

2...............

3...............

4............... 

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

1.50

1.45

1.40

1.30 

1.25

1.20

1.20

1.45

1.40

1.25

1.25

1.15

1.15

1.10

1.10

1.10

1.10

1.10

1.10

1.10

Feb.

1.00

1.45

1.50

1.20 

1.20

1.10

1.10

1.05

1.10

1.05

1.30

1.15

1 25

1.30

1.10

1.10

1.10

1.00

1.20

.40

Mar.

1.10

1.10

.90

.90 

1.05

1.05

1.05

1.10

1.10

1.00

1.10

1.15

1.20

1.20

1.20

1.25

.75

1.20

1.25

1.25

Apr.

1.35

1.35

1.35

1.25 

1.25

1.25

1.20

1.20

1.20

1.20

1.25

1.10

.95

1.00

1.20

1.20

1.20

1.20

1.00

1.05

May.

1.30

1.35

1.35

1.35 

1.20

1.35

1.35

1.35

1.30

1.30

1.30

1.20

1.25

1.25

1.25

1.25

1.25

1.25

1.25

1.35

June.

1.35

1.30

1.25

1.25 

1.20

1.20

1.25

1.35

1.25

1.40

1.45

1.40

1.45

1.45

1.45

1.25

1.45

1.40

1.40

1.40

July.

1.20

1.20

1.20

1.20 

1.20

1.25

1.30

1.40

1.40

1.35

1.40

1.40

1.20

1.20

1.40

1.50

1.40

1.40

1.35

1.25

Aug.

1.10

1.10

1.10

1.05 

1.05

1.05

1.30

1.10

1.30

1.30

1.30

1.30

1.25

1.50

1.50

1.40

1.35

1.15

1.20

1.10

Sept.

1.05

1.40

1.10

1.20 

1.15

1.20

1.30

1.00

1.15

1.05

1.05

1.05

.95

.95

.90

.95

.95

1.00

1.00

1.00

Oct.

1.45

1.50

1.30

1.50 

1.30

1.10

1.15

1.12

1.05

1.05

1.05

1.30

1.40

1.50

1.45

1.35

1.25

1.12

1.10

.95

Nov.

1.30

.90

.90

1.05 

1.05

1.05

1.00

1.20

1.40

1.20

1.40

1.30

1.25

1.15

1.40

1.35

1.20

1.20

1.20

1.20

Dec.

1.10

1.35

.90

1.00 

1.20

1.25

1.20

1.00

1.20

1.25

1.20

1.20

1.12

1.15

1.00

1.30

1.20

1.30

1.45

1.35
140 WATER RESOURCES OF HAWAH, 1912.

Daily gage height, in feet, of Maniania ditch near Wailuku, Maui,for 1912 Continued.

Day.

21...............

22...............

23...............

24............... 

25...............

26...............

27...............

28...............

29

30.... *.........

31...............

Jan.

1.00

1.05

1.05

1.15 

1.05

1.05

1.00

.90

.95

.95

1.05

Feb.

0.90

.70

.70

.70 

.50

1.00

1.05

1.05

1.05

Mar.

1.25

1 91

1.25

1.10 

1.25

1.25

1.30

1.35

1.35

1.35

1.20

Apr.

1.10 1 oft

1 $ft

1.30 

1.35

1.35

1.35

1.20

1.30

1 **ft

May.

1.30

1 Qft

1.25

1.35 

1.25

1.30

1.35

i ^n

i i*\

1.35

June.

1.50

1.40

1.30

1.45 

1.40

1.35

1.30

1.25

1.20

1.15

July.

1.40

1 9^

1.25

1.30 

1.20

1.20

1.25

1.20

1.25

1.15

1.10

Aug.

1.10

1 V\

1.10

1.05 

1.00

1.35

1.40

1.25

1.35

1 9^

1.10

Sept.

1.00

90

.95

.85 

.85

1.00

1.10

1.10

Oct.

1.20

1.35

1.35

1.30 

1.15

1.40

1.35

1 45

1.35

1.50

Nov.

1.20

1.20

------

1.10

1.20

1.15

1.30

Dec.

1.35

1.20

1.35

1.35 

1.20

1.35

1.40

1.45

1.20

1 40

1 41)

Daily discharge, in second-feet, of Maniania ditch near Wailuku, Maui,for 1912.

Day.

1............... 2.. ...... .:.....

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

30.0

28.8

27.5

25.0

23.8

22.5

22.5

28.8

27.5

23.8

23.8

21.2

21.2

20.0

20.0

20.0

20.0

20.0

20.0

20.0

17.5

1C Q

18.8

21.2

18.8

18.8

17.5

15.0

1ft 9

16.2

18.8

Feb.

17.5

28.8

30.0

22.5

22.5

20.0

20.0

18.8

20.0

18.8

25.0

21.2

23.8

25.0

20.0

20.0

20.0

17.5

22.5

5.0

15.0

10.5

10.5

10.5

6.5

17.5

18.8

18.8

1Q 0

Mar.

20.0

20.0

15.0

15.0

18.8

18.8

18.8

20.0

20.0

17.5

20.0

21.2

22.5

22.5

22.5

23.8

11.5

22.5

23.8

23.8

23.8

23.8

23.8

20.0

23.8

23.8

25.0

26.2

9ft 9

26.2

22.5

Apr.

26.2

26.2

26.2

23.8

23.8

23.8

22.5

22.5

22.5

22.5

93 a

20.0

17.5

22.5

22.5

22.5

22.5

17.5

18.8

20.0

OK A

25.0 95 rt

26.2

26.2

26.2

22.5

OK A

25.0

May.

25.0

26.2

26.2

26.2

22.5

26.2

26.2

26.2

25.0

25.0

22.5

OO 0

 23.8

23.8

23.8

23.8

OQ o

23.8

26.2

25.0

OC A

26.2

23.8

OK A.

26.2

25.0

OC A

26.2

26.2

June.

9fi 9

25.0

23.8

23.8

22.5

22.5

23.8

26.2

23.8

27.5

28.8

27.5

28.8

28.8

28.8

93 a

28.8

27.5

27.5

27.5

30.0 97 <*.

25.0

00 Q

27.5

Oft 9

25.0

23.8 99 <*.

21.2

July.

22.5

22.5

22.5

22.5

22.5

23.8

25.0

27.5

27.5

26.2

27.5

27.5

22.5

22.5

30.0

27.5

27.5

26.2

23.8

27.5

oq o

23.8

25.0

22.5

22.5

22.5

OQ o

21.2

20.0

Aug.

20.0

20.0

20.0

18.8

18.8

18.8

25.0

20.0

25.0

25.0

25.0

23.8

30.0

30.0

27.5

26.2

-21.2

22.5

20.0

20.0

20.0

18.8

17.5

26.2

27.5

23.8

26.2

23.8

20.0

Sept.

18.8

27.5

20.0

22.5

21.2

22.5

25.0

17.5

21.2

18.8

18.8

18.8

16.2

16.2

15.0

16.2

16.2

17.5

17.5

17.5

17.5

15.0

16.2

13.8

13.8

17.5

20.0

22.5

20.0

27.5

Oct.

28.8

30.0

25.0

30.0

25.0

20.0

21.2

20.5

18.8

18.8

18.8

25.0

27.5

30.0

28.8

26.2

23.8

20.5

20.0

16.2

22.5

26.2

26.2

25.0

21.2

27.5

28.8

26.2

27.5

30.0

Nov.

25.0

15.0

15.0

18.8

18.8

18.8

17.5

22.5

27.5

22.5

27.5

25.0

23.8

21.2

27.5

26.2

22.5

22.5

22.5

22.5

22.5

22.5

22.0

21.5

21.0

20.5

20.0

22.5

21.2

25.0

Dec.

20.0

26.2

15.0

17.5

22.5

23.8

22.5

17.5

22.5

23.8

22.5

22.5

20.5

21.2

17.5

25.0

22.5

25.0

28.8

26.2

26.2

22.5

26.2

26.2

22.5

26.2

27.5

28.8

22.5

27.5

27.5

NOTE. Daily discharge determined from rating curve based on two discharge measurements in 1912. 

Monthly discharge of Maniania ditch near Wailuku, Maui, for 1912.

Month.

January..............

March.................................. .....

May........ .......................................

June. ................ . .

July...............................................

September. .......................................

November. ........................

December......................... ......

The year. .................

Discharge in second-feet.

Maximum.

30.0 

30.0 

26.2 

26.2 

26.2 

30.0 

30.0 

30.0 

27.5 

30.0 

27.5 

28.8

30.0

Minimum.

15.0 

6.5 

11.5 

16.2 

22.5 

21.2 

20.0 

17.5 

13.8 

16.2 

15.0 

15.0

6.5

Mean.

21.4 

18-8 

21.4 

23.0 

24.9 

26.0 

24.6 

22.9 

19.0 

24.6 

22.0 

23.4

22.7

Run-off 

(total in 

acre-feet).

1,320 

1,080 

1,320 

1,370 

1,530 

1,550 

1,510 

1,410 

1,130 

1,510 

1,310 

1,440

16,500

Accuracy.

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C.
ISLAND OF MAUI. 141

WAIKAPU STREAM BASIN. 

WAIKAPU STREAM HEAR WAIKAPTT, HAITI.

Location. About 5 miles southwest of Wailuku and 1J milea west of Waikapu, 500

feet below Palolo ditch.

Records available. November 25, 1910, to December 31, 1912. 

Gage. Vertical staff; read twice daily, at 9 a, m. and 2 p. m.; datum unchanged. 

Channel. Shifting.

Discharge measurements. Made by wading. 

Accuracy. Fair.

Discharge measurements of Waikapu Stream near Waikapu, Maui, in 191%.

Date.

July 9

12

Hydrographer.

.....do.............

.....do.............

Gage 

height.

Feet.

O Q1

.50

.31

Discharge.

Sec.-ft. 

6.60

*K\

.36

Date.

Oct. 18

Nov. 20

Dec. 11

Hydrographer.

.....do.............

Gage 

height.

Feet. 

0.30

.70

.30

Discharge.

Sec.-ft. 

0.25

2.34

.22

Daily gage height, in feet, of Waikapu Stream near Waikapu, Maui, for 191%.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... <*1

Jan.

0.38

.38

.38

.38

.38

.38

.38

.50

.41

.40

.38

.38

.38

.38

.38

.36

.40

.40

.40

.40

.40

.39

.40

.38

.35

.32

.32

.32

.36

.36

.32

Feb.

0.32

.62

.51

.60 -.32

.32

.32

.32

.34

.32

.49

*34

.38

.32

.32

.32

.32

.32

1.15

1.34

1.08

.64

.46

.40

.36

.55

1.92

1.62

.56

Mar.

0.42

1.49

1.40

.68

.46

.48

.64

.42

1.02

1.39

1.62

1.26

1.26

.55

.35

.32

.70

1.06

.54

.89

.74

.45

.40

.40

.35

.38

.40

.36

.40

.59

.74

Apr.

1.10

1.18

1.34

2.02

1.81

1.12

1.38

1.21

.91

.50

.52

1.91

.89

1.46

.86

.65

.68

.70

.45

.52

.54

.42

.42

.40

.40

.40

.45

.40

.39

.38

May.

0.38

.38

.38

.35

.32

.30

.30

.31

.30

.30

.30

.30

.30

.30

.30

.30

.30

.28

.28

.30

.28

.28

.28

.49

..36

.36

.59

.40

.36

.30

Qrt

June.

0.30

.29

.28

.28

.28

.25

.30

.30

.30

.62

.39

.34

.31

.30

.48

.35

.38

.30

.30

.30

.48

.30

.30

.41

.31

.30

.30

.30

.30

.30

July.

0.30

.30

.30

.30

.30

.30

.29

.28

1.36

.66

.39

.34

.54

.44

.42

.42

.41

.38

.35

.35

.35

.34

.32

.32

.32

.32

.32

.32

.40

.40

.38

Aug.

0.3S

.38

.39

.38

.38

.40

.40

.40

.40

.40

.40

.42

.40

.40

.74

.48

.40

.39

.35

.35

.35

.44

.36

.35

.35

.38

.35

.30

.31

.30

.30

Sept.

0.30

.32

.30

.30

.30

.30

.31

.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

.30

.31

.30

.30

.30

.30

.32

.30

.38

Oct.

0.30

.40

.30

.31<?n

.30

.28

.30

.30

.30

.30

.30

.34

.45

.30

.30

.30

.30

.30

.30

.31

.32

.30

.30

.30

.30

.58

.36

.30

.30

.30

Nov.

0.30

.30

.30

.30<?n

.30

.30

.31

1.48

.35

.30

.30

.30

.28

.28

1.32

.92

1.22

.38

1.08

.48

.52

.31

.30

.30

.31

.30

.30

.30

.30

Dec.

0.35

.30

.48

.30

.30

.30

.38

.30

.30

.30

.30

.30

.28

.30

.30

.30

.31

.30

.30

.30

.30

.31

.30

.30

.30

.30

.30

.30

.30

.30

.30

Daily discharge, in second-feet, of Waikapu Stream near Waikapu, Maui, for 191%.

Day.

1.. ..............

2................

3................

4................

5................

Jan.

0.3

.3

.3

.3

.3

Feb.

0.2

1.2

.6

1.0

.2

Mar.

0.3

34.3

28.0

1.8

.4

Apr.

13.0

16.2

24.4

87.6

63.1

May.

0.3

.3

.3

.2

.2

June.

0.2

.2

.2

.2

.2

July.

0.2

.2

.2

.2

.2

Aug.

.3

.3

.3

.3

Sept.

0.2

.2

.2

.2

.2

Oct.

0.2

.3

.2

.2

.2

Nov.

0.2

.2

.2

.2

.2

Dec.

0.2

.2

.5

.2

.2
142 WATEE EESOUBCES OF HAW AH, 1912.

Daily discharge, in second-feet, of Waikapu Stream near Waikapu, Maui, for 1912 Contd.

Day.

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.3

.3

.5

.3

, .3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.3

.2

.2

.2

.2

.3

.3

.2

Feb.

0.2

.2

.2

.2

.2

.5

.2

.3

.2

.2

.2

.2

15.0

12.2

1.4

.4

.3

.3

.8

75.4

44.8

1.0

Mar.

0.5

1.4

.3

9.8

27.4

44.8

20.0

20.0

.8

.2

.2

9 n

11.4

.7

5.8

2.8

.4

.3

.3

.2

.3

.3

.3

1.0

2.8

Apr.

13.8

26.8

17.5

6.3

.5

.6

74.2

5.8

32.2

>; 9

1.5

1.8

2.0

.4

.6

.7

.3

.3

.3

.3

.4

.3

.3

May.

0.2

.2

.2

, .2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.5

.3

.3

1.0

.3

.2

.2

.2

June.

0.2

.2

.2

.2

1.2

.3

.2

.2

.2

.5

.2

.3

.2

.2

.2

.5

.2

.2

.3

.2

.2

.2

.2

.2

.2

July.

0.2

.2

.2

25.6

1.6

.3

.2

.7

.4

.3

.3

.3

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

.3

.3

Aug.

0.3

.3

.3

.3

.3

.3

.3

.3

.3

2.8

.5

.3

.3

.2

.2

.2

.4

.3

.3

.3

.2

.2

.2

.2

.2

Sept.

0.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.3

Oct.

0.2

.2

.2

.2

.2

.2

.2

.2

.4

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.9

.3

.2

.2

.2

Nov.

0.2

.2

.2

33.6

.2

.2

.2

.2

.2

.2

23.2

6.6

18.0

.3

12.2

.5

.6

.2

.2

.2

.2

.2

.2

.2

.2

Dec.

0.2

.3

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

.2

Monthly discharge of Waikapu Stream near Waikapu, Maui, for 1912.

Month.

April. .............................................

July...............................................

Discharge in second-feet.

Maximum.

0.5 

75.4 

44.8 

87.6 

1.0 

1.2 

25.6 

2.8 

.3 

.9 

33.6 

.5

87.6

Minimum .

0.2 

.2 

.2 

.3 

.2 

.2 

.2 

.2 

.2 

.2 

.2 

.2

.2

Mean.

0.29 

6.28 

7.07 

13.20 

.25 

.26 

1.11 

.36 

.20 

.24 

.33 

.21

2.70

Run-off 

(total in 

acre-feet).

17.8 

361.0 

435.0 

785.0 

15.4 

15.5 

68.2 

22.1 

11.9 

14.8 

' 19.6 

12.9

1,780.0

Accuracy.

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C. 

C.

SOUTH SIDE WAIKAPU DITCH NEAR WAIKAPU, MAUI.

Location. About 1J miles west of Waikapu, 1 mile below ditch intake, and 5 miles

southwest of Wailuku.

Records available. November 21, 1910, to December 31, 1912. 

Gage. Vertical staff; read twice daily, at 9 a. m. and 2 p. m. 

Channel. Permanent.

Discharge measurements. Made from plank over ditch about 400 feet below gage. 

Accuracy. Records good. 

Cooperation. Station is maintained in cooperation with Wailuku Sugar Co.
ISLAND OP MAUI. 143 

Discharge measurements of South Side Waikapu ditch near Waikapu, Maui, in 1912.

Date.

Mar. 8

July 9

Aug. 30

Hydrographer.

.....do.............

.....do.............

3B.

Feet. 

0.84

1.07

.65

Discharge.

Sec.-ft. 

8.02

11.4

4.90

Date.

Oct. 18

Dec. 11

Hydrographer.

.....do.............

C. T. Bailey........

Gage 

height.

Feet. 

00.59

on

.62

Discharge.

Sec.-ft. 

3.56

9.68

4.58

oNew gage Oct. 18,1912. 

Daily gage height, in feet, of South Side Waikapu ditch near Waikapu, Maui, for 1912.

Day.

1.. .............

2...............

4...............

4...............

5...............

6..... ..........

7...............

8...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23..... ......... .

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.60

.60

.58

.58

.58

.58

.58

.78

.61

.60

.58

.58

.58

.58

.55

.55

.55

.55

.55

.52

.52

.52

.52

.59

.52

.50

.50

.50

.54

.64

.50

Feb.

0.51

.91

.82

.72

.61

.58

.58

.55

.59

.58

.68

.61

66

60

.60

.60

60

.58

1.05

1.10

.95

.76

70

.70

.80

.90

1.11

1.06

QQ

.......

Mar.

0.89

1.05

1.01

1.00

.90

on

.95

.89 i nfi

1.11

1.15

1.10

1.10

1.00

on

81

.98

1.06

.80

1 00

09

.85

01

.79

.74

.79

.79

.78

.80

.95

.98

Apr.

1.05

1.14

1.11

1.20

.95

1.10

1.15

1.11

.96

1.01

.98

1.28

QQ

1.12

1.02

1.02

1.00

.99

.98

89

BQ

.85

.82

.80

.82

.79

.78

.80

May.

0.80

.80

.80

78

78

17K

.75

78

71

.74

.74

.71

.70

.70

.70

.71

.70

.70

.70

.71

.70

.70

.69

.90

.70

.79

.92

.82

.82

.79

.79

June.

0.71

.70

.70

.70

.70

.70

.71

.70

.70

as

.89

84

oc

7Q

on

QQ

.85

.79

.75

.70

.80

.71

.70

.78

.71

.70

.70

.69

,.68

.68

July.

0.70

.70

.70

.70

.70

fiQ

.68

.68

1.10

95

.81

80

09

.80

.74

7<;

.74

.72

.70

.70

.70

fiO

.70

.70

.70

.70

.70

.70

.70

.70

.70

Aug.

0.70

.70

.70

.70

.70

.70

.70

.70

.70

.70

.71

.75

.72

.70

Qfi

QQ

79

.69

.66

.65

.65

.76

.62

.62

.62

.71

.80

.70

fiQ

.69

.65

Sept.

0.65

.70

.66

.65

.65

.65

fit)

.65

.64

.62

.61

.60

.60

.60

60

60

.60

.60

.60

.60

.60

60

.61

.60

.60

.64

.60

.65

.60

.68

Oct.

0.60

.35

.61

.62

fin

.60

.58

.58

.58

.58

.58

.60

.65

.78

.62

.60

.60

.60

.58

.58

.62

.68

60

.60

.60

.60

.86

.75

.62

.60

.68

Nov.

0.60

.60

.58

.58

.58

.58

.58

.58

.86

.78

.65

.60

.60

.58

.58

.96

.86

.92

.81

.95

.82

.84

.75

.70

.68

.65

.60

.60

.60

.61

Dec.

0.68

60"78

.68

.60

60

.78

.71

66

60

.60

.60

.60

.60

.60

.61

.60

.60

.60

.58

.58

.61

60

.58

.58

.58

.55

.58

.56

.58

.58

Daily discharge, in second-feet, of South Side Waikapu ditch near Waikapu, Maui, for

1912.

Day.

1....... ........

2...............

3....... ........

4_..............

5... -....-...

6...............

7... ............

8.... ...........

9............... 10...............

11...............

12............... 13

14...............

15....,......,-.-

Jan.

4.2

4.2

3.9

3.9

3.9

3.9

3.9

7.0

4.4

4.2

3.9

3.9

3.9

3.9

3.5

Feb.

2.9

9.2

7.6

6.0

4.4

3.9

3.9

3.5

4.1

3.9

5.4

4.4

5.1

4.2

4.2

Mar.

8.8

11.7

11.0

10.8

9.0

9.0

9.9

8.8

11.9

12.8

13.6

12.6

12.6

10.8

9.0

Apr.

11.7

13.4

12.8

14.5

9.9

12.6

13.6

12.8

10.1

11.0

10.4

16.1

10.6

13.0

11.2

May.

" 7.3

7.3

7.3

7.0

7.0

6.5

6.5

7.0

6.5

6.3

6.3

5.9

5.7

5.7

5.7

June.

5.9

5.7

5.7

5.7

5.7

5.7

5.9

5.7

5.7

8.2

8.8

8.0

8.2

7.1

9.0

July.

5.7

5.7

5.7

5.7

5.7

5.6

5.4

5.4

12.6

9.9

7.5

7.3

9.4

7.3

6.3

Aug.

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.9

6.5

6.0

5.7

10.1

Sept.

5.0

5.7

5.1

5.0

5.0

5.0

5.6

5.0

4.8

4.5

4.4

4.2

4.2

4.2

4.2

Oct.

4.2

1.0

4.4

4.5

4.2

4.2

3.9

3.9

3.9

3.9

3.9

4.2

5.0

7.0

4.5

Nov.

4.2

4.2

3.9

3.9

3.9

3.9

3.9

3.9

8.3

7.0

5.0

4.2

4.2

3.9

3.9

Dec.

5.4

4.2

7.0

5.4

4.2

4.2

7.0

5.9

5.1

4.2

4.2

4.2

4.2

4-2

4.2
144 WATER BESOURCES OP HAWAII, 1912.

Daily discharge, in second-feet, of South Side Waikapu ditch near Waikapu, Maui, for

1912 Continued.

Day.

16....-...-..-...

17...............

18.....-..-.---..

19...............

20...............

21...............

22...............

23...............

24.... ......... ..

25...............

26...............

27... ........... .

28...---.........

29. ..............

30...............

31. ..............

Jan.

3.5

3.5

.3.5

3.5

3.1

3.1

3.1

3.1

4.1

3.1

2.8

2.8

2.8

3.4

4.8

2.8

Feb.

4.2

4.2

3.9

11.7

12.6

9.9

6.7

7.1

5.7

7.3

9.0

12.8

11.9

10.6

Mar.

7.5

11.9

7 3

10.8

9.4

8.2

7.5

7.1

6.3

7.1

7.1

7.0

7.3

9 9

10.4

Apr.

n

o

10.8

10.6

10.4

10.1

9.7

8.8

8

O

8.2

7.6

7 1

7.6

7.1

7.0

7 Q

May.

5 Q

5.7

5.7

Z 7

5.9

5.7

5.7

5.6

9.0

5.7

7,1

9.4

7.6

7.6

7.1

7.1

June.

8.7

8.2

7.1

6.5

5.7

7.3

5.9

5.7

7.0

5.9

5.7

5.7

5.6

5.4

5.4

July.

6.5

6.3

6.0

5.7

5.7

5.7

5.6

5,7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

5.7

Aug.

8.8

6.0

5.6

5.1

5.0

5.0

6.7

4.5

4.5

4.5

5.9

7.3

5.7

5.6

5.6

5.0

Sept.

 4.2

4.2

4.2

4.2

4.2

4.2

4.2

4.4

4.2

4.2

4.8

4.2

5.0

4.2

5.4

Oct.

4.2

4.2

4.2

3.9

3.9

4.5

5.4

4.2

4.2

4.2

4.2

8.3

6.5

4.5

4.2

5.4

Nov.

10.1

8.3

9.4

7.5

Q Q

7.6

8.0

6.5

5.7

5.4

5.0

4.2

4.2

4.2

4.4

Dec.

4.4

d 9

4.2

A O

3.9

3.9

4.4

4.2

3.9

3.9

*\ Q

3.5 Q q

3.6

3 Q

3.9

Monthly discharge of South Side Waikapu ditch near Waikapu, Maui, for 1912.

Month.

March. . ...........................................

April ................................... ........

July...............................................

September. ........................................

The year. ...................................

Discharge in second-feet.

Maximum.

7.0 

12.8 

13.6 

16.1 

9.4 

9.0 

12.6 

10.1 

5.7 

8.3 

10.1 

7.0

16.1

Minimum.

2.8 

2.9 

6.3 

7.0 

5.6 

5.4 

5.4 

4.5 

4.2 

1.0 

3.9 

3.5

1.0

Mean.

3.73 

6.56 

9.60 

10.50 

6.60 

6.56 

6.39 

5.87 

4.59 

4.47 

5.62 

4.44

6.24

Run-Off 

(total in 

acre-feet).

229.0 

377.0 

590.0 

625.0 

406.0 

390.0 

393.0 

361.0 

273.0 

275.0 

334.0 

273.0

4,530.00

Accuracy.

A. 

A. 

A.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

PALOLO (EVERETT) DITCH NEAR WAIKAPTJ, MAUI.

Location. About 5J miles southwest of Wailuku and 1J miles west of Waikapu and

200 feet below ditch intake.

Records available. November 21,1910, to December 31, 1912. 

Gage. Vertical staff; read twice daily, at 9 a. m. and 2 p. m.; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made by wading. 

Accuracy. Records good. 

Cooperation. Station maintained in cooperation with Wailuku Sugar Co.

Discharge measurements of Palolo ditch near Waikapu, Maui, in 1912.

Date.

Mar. 8

July 12

Hydrographer.

.....do.............

.....do.............

Gage 

height.

Feet.

O QO

OR

.89

Discharge.

Sec.-ft. 

3.50

3.82

3.27

Date.

Oct. 18

Dec. 11

Hydrographer.

J. B. Stewart......

C.T. Bailey.. ......

Gage 

height.

Feet. 

0.88

.86

Discharge.

Sec.-ft. 

3.00

2.91
ISLAM* OF MAUL 145 

Daily gage height, in feet, of Palolo ditch near Waikapu, Maui,for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19........... .

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.95

.95

.95

.95

.95

.95

.98

1 04

1.00

.98

QS

.98

.98

.98

on

.95

QK

.95

OK

.95

Q*

.95

.95

99

QQ

.95

QK

.95

.96

.98

.98

Feb.

0.98

1.18

1.19

1.09

98

98

.98

QQ

99

Oft

1.05

1.01

1.02

99

QQ

98

QS

QQ

1.14

1.14

1.11

1 09

1.05 1 00

QQ

1.01

1.14

1.11

1 09

Mar.

1.01

1.14

1.11 i no

1 no

1 n4

1.09

1.00

1.09

1 14

1.15

1.14

1.11

1.01

.98

QQ.

1 nfi

1.10

1.00

1 04

1.02

99015

94

09

f\A

Qe

96015

98

.99

Apr.

1.09

1.10

1.15

1.20

1.11

.95

1.05

1.05

1.02

.95

Ofi

1.16015

1.06

1.05

1.04

1 n4

1.05

00

.98

98

QK,

QK.

QQ

QQ

.95

OK

QS

98

.98

May.

0.98

.98

.96

.95

.95

.95

.95

98

.95

.95

on

015

.95

.95

on

.96

QK

QK

.95

.96

QK

<K

<K

1.05

QQ

.98

1.05

98

QQ

.95

.95

June.

0.95

.95

.95

on

.95

.95

.96Qn

.95

.99

1 00

.96

.98

.96 1 00

.98

.95

on

on

04

QO

96

.95 1 00

.96

.95

on

95

.95

.95

July.

0.95

.95

.95

.95

.95

.95

.95

.95

1.11

1.01

.96

.95

1.00

.95

QK

.96

<K

OK.

.95

.95

on

.95

.95

on

on

.95

on

.95

.95

.95

.95

Aug.

0.95

.95

.95

.95

.95

.95

.95

.95

.95

.95

.96

.98

.96

.95

QO

.98

on

.95

.95

.95

.95

.98

.95

Q9

Q9

.94

98

04

04

.96

.94

Sept.

0.92

.95

.94

.90

.90

.92

.91

.90

.90

.90

.90

.90

.90

.90

on

- .90

90

on

.90

.90

90

.90

.92

on

Qn

.91

on

.92

.90

.94

Oct.

0.90

.98

.90

.91

.90

.90

.90

.88

.88

.89

.89

.90

.95

.98

on

.90

.90

.89

.88

.88

.92

.92

.90

on

on

.90

1.01

.98

.90

.88

.89

Nov.

0.88

.88

.88

.88

.88

.88

.88

.89

1.18

.92

.90

.89

.88

.88

.88

1.08

1.01

1.08

.95

1.08

.96

.96

.90

.90

.90

.90

.90

.88

.88

.89

Dec.

0.91

.90

.96

.90

.88

.88

.99

.90

.90

.88

.88

.88

.88

.88

.88

.89

.90

.88

.88

.88

.89

.89

.88

.88

.88

.88

.86

.85

.86

.88

.88

Daily discharge, in second-feet, of Palolo ditch near Waikapu, Maui, for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7.... ...........

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

3.6

3.6

3.6

3.6

3.6

3.6

3.8

4.4

4 0

3.8

3.8

3.8

3.8

3.8

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.9

3.8

3.6

3.6

3.7

3.8

3.8

Feb.

3.8

5.8

5.9

4 9

3.8

3

0

3.8

3.8

<? 0

3.8

4.5

4.1

4 2

3.9

3

0

3.8

3.8

3.8

5.4

5.4

5.1

4.9

4.5

4-0

3.8

4 1

5.4

5.1

A 9

Mar.

4.1

5.4

5.1

4 9

4 9

4.4

4 9

4 0

4 9

5.4

5.5

5.4

5.1

4.1

3

0

3.8

4.6

5.0

4.0

4.4

4 9

3.9

3.6

3.5

3.4

3.5

3.7

3

fl

3.8

3.9

Apr.

4.9

'5.55.0

6.0

5.1

3.6

A K

4.5

4 9

3.6

3.7

5.6

3.6

4 6

4.5

4.4

4.4

A K

3 Q

3.8

3

0

3.6

3.8

3.8

3.6

? fi

3.8

3.8

3.8

May.

3.8

3.8

3.7

3.6

3.6

<? ft

3.8

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.7

3.6

3.6

3.6

1 7

3.6

3.6

4.5

3

0

3.8

4.5

3.8

3 9

3.6

June.

3.6 ? ft

3.6

3.6

3.6

3 7

1 ft

3.6

1 0

4.0

3.7

3.8

3.7

4.0

3.8

3.6

3.6

3.6

3.5

3 d

3.7

3.6

4 0

3.7

3.6

3.6

July.

3.6

3.6

3,6

3.6

3.6

3.6

3.6

5.1

4.1

3.7

3.6

4.0

3.6

3.6

3.7

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

Aug.

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.6

3.7

3.8

3 7

3.6

1 0

3.8

3.6

3.6

3.6

3.6

3.6

3.8

3.6

3.4

2 4

3.5

3.8

3.5

3.5

3.7

3.5

Sept.

3.4

3.5

3

0

3.4

3.3

3.2

3 9

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3 9

3.2

3 9

3.2

3

0

3.2

3.4

3.2

3.2

3.3

3.2

3.4

3.2

3.5

Oct.

3 9

3.8

3.2

3.3

3.2

3.2

3.2

3.0

3.1

3.1

3.2

3.8

3.2

3.2

3.2

3.1

3.0

3.0

3.4

3.4

3.2

3.2

3.2

3.2

4.1

3.8

3.2

3.0

3.1

Nov.

3.0

3.0

3.0

3.0

3 A

3.1

.5.8

0 A

3.2

3.1 <? n

3.0

3.0

4.8

4.1

4.8

s ft

4.8

 * 7

3 7

3.2

3.2

3.2

3.2

3.2

3.0

3.0

3.1

Dec.

3.2 ? 9

3.7

3 9

3.0

q n

1 Q

3.2

q 9

3.0

3.0

3.0

3.0

3.0

3.0

3.1

3.2

3.0

3.0

3.0

3.1

3.1

3.0

3.0

3.0

3.0

2.9

2.8

2.9

3.0

3.0

14694° WSP 336 14
146 WATER EESOUECES OF HAWAII, 1912.

Monthly discharge of Palolo ditch near Waikapu, Maui, for 1912.

Month.

April..............................................

May...............................................

June. .............................................

July...............................................

August ............................................

October ...........................................

November....................... . . .....

December. .......................................

The year. ...................................

Discharge in second-feet.

Maximum.

4.4 

5.9 

5.5 

6.0 

4.5 

4.0 

5.1 

3.9 

3.6 

4.1 

5.8 

3.9

6.0

Minimum.

3.6 

3.8 

3.4 

3.6 

3.6 

3.5 

3.6 

3.4 

3.2 

3.0 

3.0

2

Q 

. o

2

0 

. o

Mean.

3.71 

4.38 

4.31 

4.24 

3.72 

 3.69 

3.68 

3.62 

3.27 

3.27 

3.44 

3.09

3.70

Run-off 

(total in 

acre-feet).

228 

252 

265 

252 

229 

220 

226 

223 

195 

201 

205 

190

2,690

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

UKUMEHAME STREAM BASIN. 

tTKTJMEHAME STREAM NEAR OLOWALtT, MATTI.

Location. About 8J miles southeast of Lahaina and 2J miles east of Olowalu and

125 feet above intake of Olowalu Plantation ditch. 

Records available. August 14, 1911, to December 16,1912. 

Gage. Inclined etaff; read twice daily, at 10 a. m. and 4 p. m.; destroyed by freshet

December 16, 1912; not replaced before close of year. 

Channel. Shifting.

Discharge measurements. Made by wading. 

Accuracy. Records good. 

Cooperation. Station maintained with Olowalu Sugar Co.

Discharge measurements of Ukumehame Stream near.Olowalu, Maui, in 1912.

Date.

July 30

Dec. 14

Hydrographer.

J. B. Stewart.. ...........................................................

C.T. Bailey. .............................................................

Gage 

height.

Feet. 

0.50

.53

Discharge.

Sec.-ft. 

5.40

4.66

Daily gage height, in feet, of Ukumehame Stream near Olowalu, Maui, for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

n.. .............

12...............

13...............

14...............

15...............

Jan.

0.50

.50

.50

.48

.48

.48

.48

.52

.50

.50

.48

.48

.48

48

.48

Feb.

0.45

.72

.68

.52

.50

.48

.45

.45

45

.45

.48

.50

.45

AK

.45

Mar.

0.75

.95

.85

.72

.72

.70

.75

.68

71

75

1.05

.92

.85

79

.70

Apr.

0.82

.95

.92

1.00

1.25

.90

.95

.92

.80

.72

.68

.85

.72

.90

.72

May.

0.55

.52

.55

.55

.55

.55

.50

.50

in

.50

.50

.50

.50

in

.50

June.

0.55

.52

.50

.50

.50

.50

.50

.50

.50

.52

.55

.55

.55

.55

.60

July.

0.55

.55

.55

.55

.55

.55

.55

.62

.85

.65

.60

60

.62

.60

.55

Aug.

0.50

.50

.50

.50

.50

.50

.50

.50

.50

.50

.50

.50

.50

.50

.65

Sept.

0.54

.50

.50

.50

.50

.50

.51

.50

.50

.50

.50

.50

.50

.50

.50

Oct.

0.55

.61

.54

.52

.52

.50

.50

.50

.50

.50

.50

.50

.50

.58

.50

Nov.

0.51

.50

.50

.50

.50

.50

.50

.50

1.15

.65

.60

.58

.55

.55

.55

Dec.

0.6C

.55

.61

.5C

.5?

.5?

.60

.60

.60

.5?

.52

.52

.52

.66

.52
ISLAND OF MAUT. 147 

Daily gage height, in feet, of Ukumehame Stream near Olowalu, Maui, for 1912 Contd.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

81 ............

Jan.

0.48

.45

.45

.45

.45

.45

.45

.45

.50

.45

.45

.45

.45

.45

.48

.45

Feb.

0.45

.45

.45

.52

.80

.80

.61

.56

.56

.56

.60

1.15

1.02

.80

.......

.......

Mar.

0.70

.65

.73

.70

.78

.72

.68

.60

.60

.60

.60

.60

.60

.60

.68

.72

Apr.

0.70

.68

.70

.65

.60

.60

.60

.60

.60

.60

.60

.60

. ooCO

.55

.55

.......

May.

0.50

.50

.50

.60

.50

.50

.50

.60

.58

.50

.52

.62

.60

.58

.55

.55

June.

0.60

.60

.60

.55

.55

.62

.58

.55

.60

.58

.55

.55

.55

.55

.55

.......

July.

0.58

.55

.55

.55

.52

.50

.50

.50

.60

.50

.50

.50

.60

.50

.50

.50

Aug.

0.58

.52

.60

.50

.50

.50

.55

.50

.50

.60

.50

.58

.55 iss

.55

.55

Sept.

0.60

.60

.50

.60

.50

.60

.60

.60

.50

.50

.51

.50

.51

.60

.58

-------

Oct.

0.60

.50

.60

.50

.60

.51

.52

.50

.50

.60

.60

.55

.66

.52

.52

.60

Nov.

0.80

.85

.85

.68

.80

.80

.75

.66

.62

.60

.60

.60

.60

.56

.52

Dec.

0.55

......

......

......

......

......

......

OLOWALU STREAM BASIN. 

OLOWALTT DITCH NO. 1 NEAR OLOWALTT, HAITI.

Location. About 7 miles east of Lahaina and 1 mile above Olowalu at Olowalu

Plantation power house.

Records available. August 12, 1911', to December 31, 1912.

Gage. Vertical staff; read twice daily, at 5.30 a. m. and 5.30 p. m.; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made in flume. 

Accuracy. Records fair. 

Cooperation. Station maintained in cooperation with Olowalu Sugar Co.

Discharge measurements of Olowalu ditch No. 1 near Olowalu, Maui, in 1912.

Date.

4

4

June 29

Hydrographer.

.....do..............

.....do..............

.....do..............

Gage 

height.

Feel. 

0.75

.24

.27

.36

Discharge.

Sec.-ft. 

13.8

2.38

2.71

4.74

Date.

July 30

Sept. 9

Dec. 14

Hydrographer.

.....do..............

C. T. Bailey........

Gage 

height.

Feet. 

0.26

.30

.31

Discharge.

Sec.-ft. 

3.33

4.00

4.50

Daily gage height, in feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 1912.

Day.

1.. .............

2...............

4...............

5...............

6...............

7...............

8...............

9............... 10...............

11...............

12...............

13...............

14...............

15...............

Jan.

0.40

.40

.40

.42

.38

.38

.48

.50

.42

.40

.32

.30

.30

.38

.38

Feb.

0.32

.65

.75

.55

.45

.40

.35

.38

.35^<\

.62

.45

.42

.40

.38

Mar.

0.75

.80

.80

.75

.75

.75

.72

.68

.70

.85

.82

.78

.80

.82

.75

Apr.

0.75

.75

.78

.75

.42

.52

.60

.55

.42

.35

.35

.40

.68

.62

.60

May.

0.42

.50

.45

.60

" .52

.50

.52

.55

.55

.50

.50

.45

.40

.38

.40

June.

0.35

.35

.35

.35

.35

.35

.35

.38

.35

.38

.35

.35

A<\

.45

.48

July.

0.40

.40

.40

.42

.41

.40

.40

.50

.65

.62

.50

.50

.58

.49

.47

Aug.

0.30

.31

.32

.35

.31

.30

.35

.35

.34

.35

.39

.35

.32

.36

.52

Sept.

0.32

.41

.37

.35

.32

.35

.35

.32

.31

.31

.30

.30

.30

.30

.30

Oct.

0.38

.40

.32

.30

.32

.31

.32

.32

.30

.30

.30

.35

.36

.52

.39

Nov.

0.44

.38

.35

.35

.35

.36

.30

.32

.65

.58

.48

.40

.36

.35

.35

Dec.

0.42

.38

.55

.42

.38

.35

.58

.48

.40

.36

.35

.32

.32

.32

,32
148 WATEE RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 1912 Con.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29............... 

30...............

31...............

Jan.

0.38

.35

.32

.35

.35

.38

.35

.35

.45

.35

.32

.30

.25

.25 

.30

.32

Feb.

0.30

.40

.38

.80

.75

.75

.78

.72

.75

.75

.72

.80

.80

.75

.......

Mar.

0.70

.78

.75

.70

.78

.75

.70

.68

.62

.55

.58

.58

.58

.62

.78

.80

Apr.

0.65

.60

, .55

.55

.52

.58

.55

.50

.50

EH

.50

.48

.40

.45

.42

May.

0.42

.45

.48

.42

.42

.45

.45

.40

.45

.38

.55

.64

.58

.58 

.45

.45

June.

0.45

.40

.38

.40

.38

.38

.38

.35

.48

.36

.35

.35

.35

.38 

.40

July.

0.48

.45

.45

.41

4(1

.44

.44

.44

.44

.42

.41

.40

.40

.37 

34

.30

Aug.

0 45

.36

.32

.30

.30

.30

.39

.35

.31

.30

.50

.50

.37

.37

38

.35

Sept.

0.29

.29

.29

.30

.30

.30

.30

.30

.29

.27

.29

.30

.32

.37 

.51

Oct.

0.36

34

30

,30

.29

.39

.45

.39

.36

34

.35

.45

.49

.39

.38

.59

Nov.

ft 4Q

.58fin

.56

.52

.58

.62

.58

.49

44

.42

.38

.38

.35

.36

Dec.

n Q<

.32

3Q

-.42

J9

.si

.61

.60

.61 .50

.5"?

.45

.42

.40 

.39

.36

Daily discharge, in second-feet, of Olowalu ditch No. 1 near Olowalu, Maui, for 191$.

Day.

1...............

2...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

19

13...............

14...............

15...............

16...............

17...............

IS

1Q

20...-...-..--..-

21...............

99

23

24...............

OK

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

4.5

4.5

4.5

4.9

4.2

4.2

6.1

6.5

4.9

4.5

3.3

3.0

3.0

42

4.2

4.2

3.8

3.3

3.8

3.8

4.2

3.8

3.8

5.5

3.8

3.3

3.0

2.5

2.5

3.0 

3.3

Feb.

3.3

10.7

14.8

7.8

5.5

4.5

3.8

4.2

3.8

3.8

9.7

5.5

4.9

4.5

4.2

3.0

4.5

4.2

17.0

14.8

14.8

16.1

13.4

14.8

14.8

13.4

17.0

17.0

148

Mar.

14.8

17.0

17.0

14.8

14.8

14.8

13.4

11.8

12.5

19.5

18.0

16.1

17.0

18.0

14.8

12.5

16.1

14.8

12.5

16.1

14.8

12.5

11.8

9.7

7.8

8.5

8.5

8

K

9 7

16.1 

17.0

Apr.

14.8

14.8

16.1

14.8

49

7.0

9.0

7.8

4.9

3.8

3.8

4.5

11.8

9.7

9.0

10.8

9.0

7.8

7.8

7.0

8.5

7.8

6.5

6.5

6.5

6.5

6.1

4.5

5.5

4.9

May.

4.9

6.5

5.5

6.5

7.0

6.5

7.0

7.8

7.8

6.5

6.5

5.5

45

4.2

45

4.9

5.5

6.1

4.9

4.9

5.5

5.5

4.5

5.5

4.2

7.8

10.4

8.5

8.5

5.5 

5.5

June.

3.8

3.8

3.8

3.8

3.8

3.8

3.8

4.2

3.8

4.2

3.8

3.8

5.5

5.5

6.1

5.5

4.5

4.2

4.5

4.2

4.2

4.2

3.8

6.1

3 Q

3.8

3.8

3.8

5.2

5.5

July.

5.5

5.5

5.5

5.9

5.7

5.5

5.5

7.5

12.2

11.2

7.5

7.5

9.9

7.3

6.9

7.1

6.5

6.5

5.7

5.5

6.3

6.3

6.3

6.3

"5 Q

5.7

5.5

5.5

5.0

4.6 

4.0

Aug.

4.0

4.2

4.3

4.8

4.2

4.0

4.8

4.8

4.6

4.8

5.4

4.8

4.3

4.9

8.1

6.5

4.9

4.3

4.0

40

4.0

5.4

4.8

4.2

4.0

7.5

7.5

5.0

5.0

5.2

4.8

Sept.

4.3

5.7

5.0

4.8

4.3

4.8

4.8

4.3

4.2

4.2

4 n

A (I

4.0

4.0

4.0

3.9

3.9

3.9

4.0

4.0

4.0

4 0

4.0

3.9

3 7

3.9

4.0

4 q

5.0

7.8

Oct.

5.2

5.5

4.3

4.0

4.3

4.2

4.3

4.3

4.0

40

4.0

4.8

4.9

8.1

5.4

4.9

4.6

4.0

4.0

3.9

5.4

6.5

5.4

49

46

4.8

6.5

7.3

5.4

5.2 

10.2

Nov.

6.3

5.2

48

4.8

4.8

4.9

4.0

4.3

12.2

9.9

7.1

5.5

4.9

4.8

4.S

7.3

9.9

10.5

9.3

8.1

9.9

11.2

9.9

7.3

6.3

5.9

5.2

5.2

4.8

4.9

Dec.

5.9

5.2

9.0

5.9

5.2

5.2

9.9

7.1

5.5

4.9

4.8

43

4.3

4.3

4.3

4.6

4.3

5.4

5.9

5.9

8.1

10.8

10.5

9.0

9.9

8.1

6.5

5.9

5.5

5.4 A a
ISLAND OF MAUI. 149 

Monthly discharge ofOlowalu ditch No. 1 near Olowalu, Maui,for 1912.

Month. ,

March

April..............................................

May

July...............................................

August ............................................

October. ..........................................

November. ....... . ...

December. ........................................

The year ....................................

Discharge in second-feet.

Maximum.

6.5 

17.0 

19.5 

16.1 

10.4 

6.1 

12.2 

8.1 

7.8 

10.2 

12.2 

10.8

19.5

IWiTrimirm2.5 

3.0 

7.8 

3.8 

4.2 

3.8 

4.0 

4.0 

3.7 

3.9 

4.0 

4.3

2.5

Mean.

4.00 

9.33 

13.9 

8.08 

6.16 

4.36 

6.51 

4.94 

4.36 

5.13 

6.80 

6.34

6.65

Run-off 

(t»tal in 

acre-feet).

246.0 

537.0 

855.0 

481.0 

379.0 

259.0 

400.0 

304.0 

259.0 

315.0 

405.0 

390.0

4,830.0

Accuracy.

A. 

A. 

A. 

A. 

A. 

B. 

A. 

A. 

A. 

A. 

A. 

A.

LAUNIUPOKO STREAM BASIN.

LATTNITTPOKO STREAM NEAR LAHAINA, MAUL

Location. About 5£ miles southeast of Lahaina, 1 mile above storage reservoir, and

about 175 feet above ditch intake of Pioneer Mill Co. 

Records available. July 25, 1911, to December 31, 1912.

Gage. Vertical staff; read twice daily, at 8.30 a. m. and 4.30 p. m.; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made by wading. 

Accuracy. Records very good. 

Cooperation. Station is maintained in cooperation with Pioneer Mill Co.

Discharge measurements of Launiupolo Stream near Lahaina, Maui, in 1912.

Date.

Mar. 3

July 31

Sept. 10

Hydrographer.

J. B. Stewart......

.....do.............

.....do.............

SSL

Feet. 

0.69

.41

.40

Discharge.

Sec.-ft. 

3.19

1.03

.93

Date.

Sept. 10

Dec. 14

Hydrographer.

.....do.............

C.T. Bailey........

&,

Feet. 

0.40

.42

.41

Discharge.

Sec.-ft. 

0.94

1.11

.97

Daily gage height, in feet, of Launiupolo Stream near Lahaina, Maui, for 1912.

[O. Brecht, observer.]

Day.

1.. ..........

2...............

3..............

4.. .............

5 _ . _ . __ ...

6...............

7-. .........

8... ............

9...............

1Q. _______ ... 

II..............

12...............

13...............

14...............

15...............

Jan.

0 45

.45

.45

45

45

.45

45

45

.45

.45 

.50

.50

.48

.45

.45

Feb.

0 45

.65

.58

KA

.40

40

.42

.52

.50

.52

.42

.45

.45

.45

.45

Mar.

0.50

KQ

.69

60

.58

i?n

.55

.52

.62

.70 

1.15

.64

.55

.50

.50

Apr.

0.55

no

.72

.62

.74

60

.78

.80

.68

.62 

.60

.64

.60

.67

.60

May.

0.50

KA

.50

.50

.64

.50

.50

.50

.50

.49 

.40

.49

.49

.47

.47

June.

0.45

.45

.45

.45

.45

45

.45

.45

.45

.45 

.45

.45

.45

.45

.45

July.

O AK

.45

.45

45

45

45

45

.45

.58

.48 

.4k

.45

.45

.45

.45

Aug.

0 40

40

.40

.40

.40

.40

40

.40

.40

.40 

.42

.40

.40

.40

.40

Sept.

0.40

40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

Oct.

0.40

40

.40

.40

.40

.40

.40

.40

.40

.40 

.48

.40

.40

.40

.40

Nov.

0.42

40

.40

.40

.40

.40

.40

.40

.78

.44 

.40

.40

.40

.40

.40

Dec.

0.40

40

.42

.40

.40

.40

.40

.40

.40

.40 

.40

.40

.40

.40

.40
150 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Launiupoko Stream near Lahaina, Maui, for 1912 Contd.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

Feb.

0.45

.45

.45

.58

.82

.72

.60

.50

.65

.50

.50

.85

.60

.50

Mar.

0.50

.58

.60

.55

.52

.52

Krt

.50

.50

.50

.50

.50

.50

Crt

.60

.64

Apr.

0.62

.60

.60

.58

.52

.50

.50

.50

.50

.50

.50

.50

.50

.50

Cn

May.

0.45

.45

.45

.45

.45

.45

.45

45

.47

.45

.50

.60

.54

.50

.50

.48

June.

0.45

.45

.45

.40

40

.42

45

.45

.45

.45

.45

.45

.45

45

.45

July.

0.45

.45

.45

.45

.45

.45

.42

.40

.40

.40

.40

.40

.40

.40

40

.40

Aug.

0.40

.40

.40

.40

.40

.40

40

.40

.40

.40

.45

.40

.40

.40

40

.40

Sept.

0.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.44

40

Oct.

0.40

.40

.40

.40

.40

.40

.40

.40

.40

.40

.42

.40

.40

.40

40

.60

Nov.

0.40

.48

.48

.42

.42

.57

41

.42

.40

.40

.40

.40

.40

.40

40

Dec.

0.40

40

40

.42

40

.48

.70

.70

.42

.40

.40

.40

.40

40

40

.40

Daily discharge, in second-feet, of Launiupoko Stream near Lahaina, Maui, for 1912.

Day.

1. ..............

2...............

3...............

5...............

6. ..............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.6

1.6

1.5

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3 

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

Feb.

1.3

2.8

2.2

1.6

1.0

l.'O

1.1

1.8

1.6

1.8

1.1

1.3

1.3

1.3

1.3

1.3

1.3

1.3

2.2

4.5

3.5

2.4

1.6

2.8

1.6

1.6

4.8

2.4

1.6

.......

Mar.

1.6

2.2

3.2

2.4

2.2

1.6

2.0

1.8

2.6

3.3

8.2

2.8

2.0

1.6

1.6

1.6

2.2

2.4

2.0

1.8

1.8 

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

2.4

2.8

Apr.

2.0

3.1

3.5

2.6

3.7

2.4

4.1

4.3

3.1

2.6

2.4

2.8

2.4

3.0

2.4

2.6

2.4

2.4

2.2

l.S

1.6 

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

1.6

May.

1.6

1.6

1.6

1.6

2.8

1.6

1.6

1.6

1.6

1.5

1.5

1.5

1.5

1.4

1.4

1.3

1.3

1.3

1.3

1.3

1.3 

1.3

1.3

1.4

1.3

1.6

2.4

1.9

1.6

1.6

1.5

June.

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.0

1.0

1.1 

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

July.

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

2.2

1.5

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.3

1.1

1.0

1.0

1.0

1.0 1.0-

1.0

1.0

1.0

1.0

Aug.

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 

1.0

1.0

1.0

1.0

1.3

1.0

1.0

1.0

1.0

1.0

Sept.

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 

1.0

1.0

1.0 1.0-

1.0

1.0

1.0

1.2

1.0

Oct.

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.5

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 

1.0

1.0

1.0

1.0

1.1

1.0

1.0

1.0

1.0

2.4

Nov.

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

4.1

1.2

1.0

1.0

1.0

1.0

1.0

1.0

1.5

1.5

1.1

1.1

2.2

1.2

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

Dec.

1.0

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0 1.1

1.0

1.5 

3.3

3.3

1.1

1.0

1.0

1.0

1.0

1.0

1.0

1.0
ISLAND OF MAUI. 151

Monthly discharge of Launiupoko Stream near Lahaina, Maul, for 191%.

Month.

May

June .....

July...............................................

October ...........................................

November. ........................................

Discharge in second-feet.

Maximum.

1.6 

4.8 

8.2 

4.3 

2.8 

1.3 

2.2 

1.3 

1.2 

2.4 

4.1 

3.3

8,2

MrnJTmiTn.

1.3 

1.0 

1.6 

1.6 

1.3 

1.0 

1.0 

1.0 

1.0 

1.0 

1.0 

1.0

1.0

Mean.

1.33 

1.91

2.22 

2.39 

1.55 

1.27 

1.24 

1.01 

1.01 

1.06 

1.20 

1.17

1.45

Run-off 

(total in 

acre-feet).

81.8 

110.0 

136.0 

142.0 

95.3 

75.6 

76.2 

62.1 

60.1 

65.2 

71.4 

71.9

1,050.0

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

KAUAULA STREAM BASIN. 

KAtTATTLA STREAM NEAR LAHAINA, HAITI.

Location. About 3 miles east of Lahaina, 200 feet above Kauaula ditch intake,

which is the uppermost diversion. 

Records available. March 7 to December 31, 1912; also discharge measurements

in 1911.

Gage. Vertical staff; read twice daily, at 6 a. m. and 4 p. m. 

.Channel. Practically permanent. 

Discharge measurements. Made by wading at low-water stages in Kauaula

ditch, which carries all the normal flow. 

Accuracy. Records good. 

Cooperation. Station is maintained in cooperation with the Pioneer Mill Co.

Discharge measurements of Kauaula Stream near Lahaina, Maui, in 1912.

Date.

Sept. 11

Dec; 13

Hydrographer.

.....do...................................................................

.....do....................................................................

C. T. Bailey..............................................................

Gage 

height.

Feet. 

0.21

.16

.12

.09

Discharge.

Sec.-ft. 

7.18

6.00

5.71

6. OS

Daily gage height, in feet, of Kauaula Stream near Lahaina, Maui, for 1912.

Day.

1.. .............

2...............

3...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

13...............

13...............

14...............

16...............

Jan. Feb. Mar.

0.95

.77

.85

.75

1.50

1.00

1.00

.78

.52

Apr.

0.98

.75

.75

.75

.98

.98

.98

.98

.90

.85

.78

.78

.73

.72

.70

May.

0.28

.43

.28

.28

.33

.45

.40

.43

.23

.23

.25

.23

.23

.23

.23

June.

0.25

.25

.25

.25

.25

.20

.20

.30

.23

.23

.23

.23

.23

.23

.25

July.

0.20

.17

.17

.17

.20

.17

.17

.15

.55

.27

.20

.20

.23

.17

.17

Aug.

0.15

.15

.15

.12

.12

.12

.17

.15

.20

.35

.20

.20

.17

.27

.27

Sept.

0.12

.17

.17

.12

.12

.15

.31

.15

.12 .12-

.12

.12

.12

.12

.12

Oct.

0.20

.17

.17

.17

.17

.17

.20

.17

.17

.17

.17

.17

.17

.23

.20

Nov.

O OA

.20

.17

.17

.17

.17

.17

.15

.30

.30

.20

.16

.15

.15

.15

Dec.

0.20

.23

.25

.13

.13

.13

.20

.17

.17

.12

.12

.12

.12

.12

.12
WATEE EESOTJECJES of HAWAII, ifttfc.

Daily gage height, in feet, of Kauaula Stream near Lahaina, Maui, for 1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan. Feb. Mar.

0 45

.45

.80

.52

.50

48

45

.45

.45

.45

.40

4007

AC

1.25

1.15

Apr.

0.85

.73

.72

.55

.43

.43

.38

4fi

.37

QQ

.40

.34

O1

.38

sr»

May.

0.23

.23

.23

.28

.28

93

93

.23

.23

OQ

.23

.80

.35

.28

.25

.25

June.

0.23

.23

.23

.20

.20

.20

93

.23

.38

.28

.23

93

.23

.20

.20

July.

0.17

.17

.17

.17

.17

.17

.17

.17

.17

.17

.17

.17

.15

1 ^

.15

.15

Aug.

ft 97

.20

.17

.17

95

.20

on

.17

.17

.17

.17

.27

on

.20

.17

.17

Sept.

0.12

.10

.10

.10

.12

.12

.10

.10

.10

.10

.10

.10

.10

.12

.53

Oct.

0.17

.17

.17

.17

.17

.17

.17

.15

19

to

tn

30

18

.20

.17

.90

Nov.

0.15

40

.15

oc

.15

.20

3ft

30

.15

is

1Q

.15

1>!

.15

.15

Dee.

Q 1O

7K

.75

.20

10

.17

1.20

1.10

30

oo

.30

O<>

.15

.15

.15

.15

KAUAULA DITCH NEAR LAHAINA, MAUL

Location. About 3 miles east of Lahaina. It is 100 feet below ditch intake, which

is uppermost on the stream.

Records available. October 16, 1911, to December 31; 1912.

Gage. Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged. 

Channel. Straight wooden flume, 3 feet wide. 

Discharge measurements. Made in flume at gage. 

Accuracy. Very good. 

Cooperation. Station maintained in cooperation with Pioneer Mill Co.

Discharge measurements of Kauaula ditch near 'Lahaina, Maui, in 1912.

Date.

Mar. 4

Sept. 11

Nov. 25

Tton 11

Hydrographer.

.....do....................................................................

.....do....................................................................

.....do....................................................................

.....do....................................................................

C.T. Bailey. .............................................................

Gage 

height.

Feet. 

0.45

.78

.71

.68

.75

.65

Discharge.

Sec.-ft. 

2.82

7.18

6.00

5.71

6.91

6.05

Daily gage height, in feet, of Kauaula ditch near Lahaina, Maui, for 1912. 

[Nakayama, observer.]

Day.

1. ..............

2. ..............

3...............

4...............

5...............

6.. .............

7...............

8...............

9...............

10...............

Jan.

0.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

Feb.

0.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

Mar.

1.05

1.05

1 nc

1.05

1.05

1.05

1.05

1.05

1 05

1.20

Apr.

1.05

.75

.75

.75

1.14

1.11

1.70

1.15

1 08

.95

May.

0.88

1.05

.88

.88

1.00

1.10

.93

1.10

.87

.86

June.

0.80

.80

.80

.80

.80

.78

.78

.93

.83

.80

July.

0.75

.72

.72

.72

.72

.75

.75

.70

1.15

.82

Aug.

0.70

.70

.70

.68

.67

.67

.70

.67

.90

.90

Sept.

0.67

.70

.70

.70

.70

.70

1.02

.70

.70

.70

Oct.

0.71

.85

.70

.70

.70

.70

.70

.75

.70

.70

Nov.

1.00

.80

.73

.70

.70

.70

.70

.70

1.00

1.00

Dec.

0.70

.95

1.00

1.02

.82

.72

.75

.92

.80

.75
ISLAND OP MAUI. 153 

Daily gage height, in feet, of Kauaula ditch near Lahaina, Maui, for 1912 Continued.

Day.

ll...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.45

.45

.45

.45

.45

.45

.45

.45

.45

' .45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

.45

Feb.

0.95

.95

.96

1.00

1.00

1.10

1.10

.89

.85

.85

.93

.97

1.05

1.05

1.05

1.10

1.10

.99

.95

Mar.

1.05

1.05

1.05

1.05

1.00

.93

.93

.95

1.05

1.05

1.05

.97

.90

.87

.85

.83

.83

.85

.80

.90

1.10

Apr.

0.75

1.05

1.10

1.10

1.10

1.10

1.10

1.05

.98

.90

.90

.90

.87

.98

.95

.98

.93

.90

.90

.90

May.

0.83

.83

.83

.83

.80

.80

.80

.80

.90

.80

.90

.80

.80

.80

.80

.80

1.20

.95

.83

.80

.80

June.

0.80

.77

.75

.70

.83

.77

.75

.70

.70

.70

.73

.73

1.20

.80

.73

:75

.75

.75

.73

.73

July.

0.75

.75

.75

.70

.70

.70

.75

.70

.70

.70

T70

.70

.70

.70

.70

.70

.70

.70

.70

.70

Aug.

0.70

.70

.70

.75

.90

.90

.88

.70

.70

.80

.72

.70

.70

.70

.70

.80

.70

.70

.70

.70

.70

Sept.

0.70

.70

.70

.67

.67

.67

.65

.65

.65

.73

.70

.67

.67

.67

.67

.65

.65

.70

.70

1.20

Oct.

0.70

.70

.70

.70

1.05

.86

.70

.70

.70

.67

.70

.70

.72

.63

.63

1.00

1.00

.85

.90

1.20

1.10

Nov.

0.80

.80

.70

.70

.67

.67

1.38

.67

.88

.68

.72

.90

.90

.70

.67

.67

.65

.63

.63

.63

Dec.

0.75

- .75

.73

.70

.70

.70

.67

.68

.95

.80

.77

1.40

1.15

1.15

.90

1.00

.88

.85

.84

. .82

.80

Daily discharge, in second-feet, of Kauaula ditch near Lahaina, Maui, for 1912.

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2

0

2.8

2.8

2.8. 

2.8

Feb.

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

2.8

10.1

10.1

10.3

11.0

11.0

12.8

12.8

. 9.0

8.4

8.4

9.7

ifi t^

11.9

U n

11.9

12.8

19 ft

10.8

10.1

Mar.

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

11.9

14.6

n

o

11.9

11.9

n

o

11.0

9.7

Q 7

10.1

11.9

11.9

11.9

10.5

9 9

8 7

8.4

8.0

Q A

8.4

7.5

9.2 

12.8

Apr.

11.9

6.8

6.8

6.8

13.5

13.0

23.6

13.7

12.4

10.1

6.8

11.9

12.8

12.8

12.8

12.8

11.9

10.6

9.2

9.2

9.2

8.7

10.6

10.1

10.6

9 7

9.2

9.2

9.2

May.

8.9

11.9

8.9

8.9

11.0

12.8

9.7

12.8

8.7

8.5

8.0

8.0

8.0

8.0

7.5

7.5

7.5

7.5

9.2

7.5

9.2

7.5 7.5

7.5

7.5

7.5

14.6

10.1

8.0

7.5 

7.5

June.

7.5

7.5

7.5

7.5

7.5

7.2

7.2

q 7

8.0

7.5

7.5

7.0

6.8

6.0

S ft

7.0

6.8

6.0

6.0

6.0

6.4

6.4

14.6

7.5

6.4

6.8

6.8

6.8

6.4

6.4

July.

6.8

6.3

6.3

6.3

6.8

6.8

6.0

13.7

7.8

6.8

6.8

6.8

6.0

6.0

6.0

6.8

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0

6.0 

6.0

Aug.

6.0

6.0

6.0

t^ 7

t^ fi

5.6

6.0

5.6

9.2

9.2

6.0

6.0

6.0

6.8

9 9

9.2

8.9

6.0

6.0

7 t^

6.3

6.0

6.0

6.0

6.0

7 ^

6.0

6.0

6.0

6.0 

6.0

Sept.

5.6

6.0

6.0

6.0

6.0

6.0

11.4

6.0

6.0

6.0

6.0

6.0

6.0

t^ fi

5.6

5.6

5.3

5.3

5.3

6.4

6.0

5.6

t^ R

5.6

5.6

5.3 t^ 3

6.0

6.0

14.6

Oct.

-6.2

8.4

6.0

6.0

6.0

6.0

6.0

6.8

6.0

6.0

6.0

6.0

6.0

6.0

n o

8.5

6.0

6.0

6.0

t^ fi

6.0

6.0

6.3

t^ ft

5.0

11.0

11.0

8 A

CL 9

14.6 

12.8

Nov.

11.0

7.5

6.4

6.0

6.0

6.0

6.0

6.0

11.0

11.0

7.5

7.5

6.0

6.0

5.6

5.6

17.8

5.6

8.9

5.7

6.3

9

O

9.2

6.0

5.6

i\ fi

5

0

5.0

6.0

5.0

Dec.

6.0

10.1

11.0

11.4

7.8

6.3

6.8

9 6

7.5

6.8

6.8

6.8

6.4

6.0

6.0

6.0

>; fi

5.7

10.1

7 <\

7.0

18.2

13.7

13 7

9.2

If 0

fi Q

8.4

8.2

7.8 

7.5
154 WATER RESOURCES OP HAWAII, 1912.

Monthly discharge of Kauaula ditch near Lahaina, Maui, for 1912.

Month.

March. .................................... ....

April..............................................

May...............................................

June ...............................................

July...............................................

September. ........................................

October. ..........................................

The year ....................................

Discharge In second-feet.

AfaTriTmTm.

2.8 

12.8 

14.6 

23.6 

14.6 

14.6 

13.7 

9.2 

14.6 

14.6 

17.8 

18.2

23.6

MiniTmmn2.8 

2.8 

7.5 

6.8 

7.5 

6.0 

6.0 

5.6 

£.3 

5.0 

£.0 

5.6

2.8

Mean.

2.80 

8.08 

10.8 

10.5 

8.62 

7.29 

6.53 

6.29 

6.26 

7.31 

7.18 

8.51

7.51

Run-off 

(total in 

acre-feet).

172.0 

465.0 

664.0 

625.0 

530.0 

434.0 

402.0 

387.0 

372.0 

449.0 

427.0 

523.0

5,450.0

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

LAHAINALUNA STREAM BASIN. 

LAHAUTALTJNA STREAM NEAR LAHAINA, HAUL

Location. About 1J miles northeast of Lahaina, one-fourth mile above Lahainaluna

Seminary, and 8 feet above Pioneer Mill Co.'s upper ditch intake. 

Records available. August 5, 1911, to December 31,1912.

Gage. Vertical staff; read twice daily, at 6 a. m. and 4 p. m.; datum unchanged 

Channel. Shifting.

Discharge measurements. Made by wading. 

Cooperation. Station maintained in cooperation with Pioneer Mill Co.

Discharge measurements of Lahainaluna Stream near Lahaina, Maui, in 1912.

Date.

Dec. 13

Hydrographer.

J. B . Stewar t .............................................................

C.T. Bailey.................................. ............................

height.

Feet. 

0.20

.16

Discharge.

Sec.-feet. 

1.42

1.28

Daily gage height, in feet, of Lahainaluna Stream near Lahaina, Maui, for 1912.

[Kawashima, observer.]

Day.

1.. .............

2...............

3...............

5...............

6...............

7...............

8...............

9. ..............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

a 25

.26

.22

.22

.24

91

.21

.25

.24

.21

.22

.22

.21

. .21

.21

.21

.21

.20

.18

.18

Feb.

a 17

.28

.26

.20

.20

1Q

.18

.18

.18

.24

.18

.18

.18

.17

.17

.17

.17

.17

.72

1.35

Mar.

a 20

.36

.38

.24

.22

91

.32

.26

.42

.28

1.00

.36

.32

.20

.20

.20

.70

.52

.21

.29

Apr.

0.55

.72

.53

.48

1.16

.86

1.36

.96

.64

.56

.35

.33

.32

.60

99

.21

.23

99

.20

.20

May.

0.22

.34

.19

.31

.41

.45

.20

.40

.20

.20

.20

.19

.18

.18

.18

.18

.18

.18

.29

.20

June.

0.20

.19

.18

.18

.70

.16

.16

.16

.28

.19

.18

.18

.18

.20

.22

.24

.22

.18

.20

.22

July.

0.25

.21

.25

.38

.24

.16

.20

.16

-58

.20

.20

.18

.25

.19

.17

.16

.18

.16

.16

.15

Aug.

0.16

.16

.16

.16

.16

.15

.15

.19

.28

.42

.60

.32 »1~5

.15

.35

.24

.22

.10

.10

.10

Sept.

0.25

.80

.19

.22

.12

.86

.49

.14

.la

.10

,10

.10

.10

:10

.10

.10

.12

.12

.14

.13

Oct.

0.36

.30

.14

.10

.10

1O

.12

.22

.12

.13

.13

.12

.15

.26

.12

.13

.12

19

.12

.12

Nov.

a 24

.12

.12

.11

.13

to

.12

.21

2.00

.38

.45

.26

.20

.15

.15

.32

.48

.52

.40

.38

Dee.

0.28

.24

.3&

.20

.20

.13

.32

.15

.15

.15

.15

.14

.14

.14

.18

.18

.18

.15

.28

.24
ISLAND OF MAUL 155 

Daily gage height, in feet, of Lahainaluna Stream near Ldhaina, Maui,for 1912 Contd.

Day.

21...............

22.. .............

23...............

24...............

25....... ___ .

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.18

.18

.18

.18

.18

.18

.18

.18

.17

.17

.17

Feb.

1.95

1.45

.60

.38

.36

.35

1.80

.54

.22

.......

Mar.

0.20

.20

.18

.18

.17

.17

.15

.15

.19

.45

.54

Apr.

0.20

.32

.21

.30

.64

.38

.24

.22

.20

.22

May.

0.52

.30

.22

.29

.20

.36

.92 -.41

.21

.20

.20

June.

0.60

.20

.21

.45

.20

.20

.18

.13

.13

.18

July.

0.18

.18

.18

.36

.19

.15

.24

.16

.16

.16

.15

Aug.

0.10

.24

.15

.10

.10

.14

.10

.16

.22

.28

.25

Sept.

0.13

.13

.13

.13

.14

.14

.14

.14

.22

.56

Oct.

0.32

.30

.40

.16

.11

.60

.55

.28

.18

.33

1.65

Nov.

0.40

.28

.30

.14

.15

.12

.12

.19

.19

.19

Dec.

0.86

1.45

1.12

.34

.27

.80

.28

.24

.27

.32

.26

KAHOMA STREAM BASIN". 

KAEOUA STREAM NEAR LAHAINA, HAITI.

Location. About 3J miles above Lahaina, 500 feet below email dam that diverts 

all low-water flow, and 125 feet above concrete dam for Pioneer Mill Co.'s upper 

ditch.

Records available. August 3,1911, to December 31, 1912.

Gage. Vertical staff; read twice daily, at 7 a. m. and 3 p. m.; datum unchanged.

Channel. Liable to shift.

Discharge measurements. Made by wading.

Accuracy. No discharge rating has been obtained.

Cooperation. Station maintained in cooperation with Pioneer Mill Co. 

The following discharge measurement was made by C. T. Bailey: 

December 13, 1912: Gage height, 0.40 foot; discharge, 0.16 second-foot.

Daily gage height, in feet, ofKdhoma Stream near Lahaina, Maui,for 1912. 

[E. C. Bortfeld, observer.]

Day.

1.. .............

2.... ...........

3............... 

4...............

5...............

6...............

7...............

8...............

10...............

11...............

12...............

13...............

14...............

15.......... ....

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25........

26...............

27...............

28...............

29...............

30...............

31...............

Jan. "

.......

Feb.

.......

0.85

1.10

1.95

1.15

.90

1.10

.80

Mar.

0.75

.95

.70

.70

.75

1.05

3.00

Apr.

0.80 

.80

1 00

.80

1.20

1.55

on

1.00

.80

.95

1.00

May.

6.70 

.75

.75

1.15

.85

June.

.......

0.85

July.

.......

0 90

Aug.

.......

0.65

.65

Sept.

.......

0.75

Oct.

.......

0.65

.80

1.05

.70

1.75

Nov.

.......

3.25

.70

1.25

.70

1.00

2.10

Dec.

......

6.70

1 45

1 45

1 Q<!

.75

NOTE. On days for which gage heights are not given there was no discharge at station, all low-water 

flow being diverted at dam 500 feet above.
156 WATEE EESOTJEOES OF HAWAII, 1912.

KAHOMA DITCH AT WEIR NEAR LAHAINA, MAUI.

Location. About 3J miles above Lahaina at portal of the lower of two development

tunnels of Pioneer Mill Co.

Records available. August 1,1911, to December 31,1912. 

Gage. Staff; read twice daily, at 7 a. m. and 3 p. m.; datum unchanged. 

Discharge measurements. By 4-foot sharp-crested weir with end contractions,

measuring discharge from development tunnel and amount diverted by small

pipe from stream. 

Cooperation. Records kept by Pioneer Mill* Co.

Discharge measurements of Kahoma ditch at weir near Lahaina, Maui, in 191%.

Date.

Aug. 1

Dec. 13

Hydrographer.

J. B.Stewart.. ...........................................................

Gage 

height.

Inches. 

5.1

4.4

Discharge.

See.-feet. 

3.58

2.98

Daily discharge, in second-feet, of Kahoma ditch at weir near Lahaina, Maui, for 1912.

Day.

1...............

2...............

3...............

4 ..............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24............... 

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

4.71

5. 58

4.99

4.43

4.43

4.43

4.43

4.99

5.29

4.43

4.43

4.29

4.29

4.16

4.16

4.16

4.16

1.16

4.16

4.16

4.16

4.16

4.16

4.16 

4.16

4.02

4.02

4.02

3.89

4.02

A (¥>

Feb.

3.89

5.58

6.68

4.99

4.16

3.89

3.89

3.89

3.89

3.89

5.58

4.02

3.89

3.89

3.76

3.76

3.76

3.76

7.30

8.14

8.65

8.14

5.58

7.14 

7.47

7.47

8.14

7.80

5.14

Mar.

6.66

7.14

7.14

5.58

4.71

6.19

6.98

5.14

6.50

7.47

7.64

6.82

4.71

4.16

7.47

4.02

3.89

6.04

7.64

4.71

4.57

6.04

4.16

4.02 

3.76

4.43

3.89

3.89

4.71

7.97

7.14

Apr.

6.19

6.19

6.98

6.98

7.80

7.14

8.65

7.97

7.80

5.58

7.14

4.99

7.47

5.14

6.19

6.50

5.29

5.73

6.19

4.85

6

Ert

6.50

5.58

7 Q7

6.82

1 90

4.16

3.89

3.89

May.

6.19

3.S9

7.30

7.14

6.50

4.16

7.80

4.29

3.89

3.76

3.76

3.63

3.63

3.63

3.63

3.63

3.63

6.19

5.43

6.66

4.16

o 7£

4.43

3.89 

5.73

7.80

7.14

5.14

3.89

4.16

3.76

June.

3.76

3.78

3.63

3.63

3.50

3.50

3.50

3.63

3.89

4.57

3.89

3.76

5.73

4.43

5.14

5.14

4.43

4.16

4.85

4,02

5.58

4.16

5.88

7.47 

4.71

4,43

4.03

3.89

3.89

3.89

July.

4.85

6.50

6.50

5.14

5.14

4.57

4.43

4.02

7.47

4.71

4.43

4.16

5.88

4.43

4.29

4.16

4.16

4.16

4.02

4.02

4.16

4.16

4.16

7.-30 

4.29

4.16

4.16

4.43

4.29

4.16

4.16

Aug.

4.02

4.02

4.02

3.89

3.89

3.89

4.43

4.71

6.19

4.71

6.50

4.85

4.29

6.19

6.66

6.04

4.16

4.02

3.89

3.89

3.89

4.16

4.16

3.89 

3.89

6.19

4.99

4.02

6.50

5.58

5.58

Sept.

4.85

7.14

4.99

4.16

4.71

6.82

6.50

4.16

4.71

3.89

3.89

3.76

3.76

3.76

3.63

3.63

3.63

3.50

3.50

3.50

3.63

3.63

3.50

3.50 

3.50

3.50

3.50

3.37

471

4.71

Oct.

6.19

4.02

4.02

3.63

5.14

3.89

5.88

4.43

3.63

3.89

3.37

4.71

3.63

6.19

3.63

3.50

3.37

3.24

3.24

3.24

6.50

7.47

6.19

4.43 

3.63

6.50

6.50

6.82

3.89

5.88

8.14

Nov.

4.71

3.89

3.63

3.37

3.37

3.37

3.37

3.37

8.65

5.88

6.82

3.76

3.37

3.37

3.37

7.47

6.35

7.47

5.88

443

7.80

4.99

5.29

3.89 

3.37

3.24

3.12

3.12

3.12

3.12

Dec.

6.35

3.89

5.88

3.63

3.12

3.12

5.58

4.43

3.24

3.12

3.00

3.00

3.00

3.00

3.50

3.00

2.88

5.14

. 6.66

5.14

7.14

7.80

7.64

5.58 

5.29

6.19

4.43

4.99

3.63

5.88

4.16

NOTE. Daily discharge computed from formula Q 3.33 LH I, L=4 feet; H=mean of two daily readings.
ISLAND OF MAUL 157 

Monthly discharge of Kahoma ditch at weir near Lahaina, Maui, for 1912.

Month.

March..... . . . . . . ............................

April.....................................................

July....................................................

Discharge in second-feet.

Maximum.

5.58 

8.65 

7.97 

8.65 

7.80 

7.47 

7.47 

6.66 

7.14 

8.14 

8.65 

7.80

8.65

Minimum,

3.89 

3.76 

3.76 

3.89 

3.63 

3.50 

4.02 

3.89 

3.37 

3.24 

3.12 

2.88

2.88

Mean.

4.34 

5.45 

5.65 

6.33 

4.92 

4.36 

4.72 

4.75 

4.20 

4.80 

4.57 

4.63

4.89

Run-off 

(total in 

acre-feet).

267 

313 

347 

377 

303 

259 

290 

292 

250 

295 

272 

285

3,550

HONOKAWAI STREAM BASIN. 

HONOKAWAI DITCH NEAR LAHAINA, MAUL

Location. About 7 miles northeast of Lahaina, 2 miles above Pioneer Mill Co.'s 

power house, 1,000 feet below intake, and 250 feet below junction with Amalu 

wooden flume.

Records available. July 1 to December 31, 1912.

Gage. A graduated rod-gage, placed in the center of flume each time a reading is 

desired; read twice daily, at 7.30 a. m. and 3 p. m.

Channel. Galvanized-iron semicircular flume.

Discharge measurements. Made in flume near gage.

Accuracy. No discharge rating yet available.

Cooperation. Station is maintained in cooperation with Pioneer Mill Co.

Discharge measurements of Honqlcawai ditch near Lahaina, Maui, in 1912.

Date.

Nov. 26

Dec. 17

Hydrographer.

.....do....................................................................

.....do....................................................................

C.T.Bailey. ..................................................... ........

&,

Feet. 

0.98

.98

.95

.91

Discharge.

Sec.-feet. 

5.37

6.03

4 QS

5.21

Daily gage height, in feet, ofHonokawai ditch near Lahaina, Maui, for 1912.

Day.

1. .........

2..........

3..........

4..........

5..........

6..........

7..........

8..........

9..........

10..........

11..........

12..........

13..........

14..........

15..........

July.

1.08

1.08

1.12

1.06

1.12

1.16

1.01

1.46

1.20

1.08

1.01

1.26

1.04

1.01

1.00

Aug.

1.01

1.00

1.00

1.00

1.00

1.00

1.06

1.06

1.32

1.42

1.08

1.10

1.08

1.12

1.50

Sept.

1.00

1.50

1.04

1.06

1.02

1.02

1.38

1.01

1.05

1.00

1.00

.98

.98

.98

.98

Oct.

1.32

1.02

1.01

1.00

1.04

1.02

.98

1.02

1.00

1.00

1.14

1.06

1.04

1.-30

1.16

Nov.

1.03

1.00

.98

.97

.96

.98

.98

.99

1.65

1.14

1.10

1.00

.98

.98

.97

Dec.

1.14

1.28

1.56

1.01

.96

.96

1.24

1.33

1.00

.97

.96

.96

.96

1.04

1.04

Day.

16..........

17..........

18..........

19.......;..

20..........

21..........

22..........

23..........

24..........

25..........

26..........

27..........

28..........

29..........

30..........

31..........

July.

1.06

1.00

1.00

1.00

1.30

1.10

1.03

1.28

1.02

1.00

1.00

1.02

1.04

1.01

1.01

1.02

Aug.

1.35

1.08

1.01

1.00

1.00

1.00

1 19

1.02

1 00

1.00

1.32

1.15

1.01

1.18

1.10

1.04

Sept.

QS

.98

.98

.98

.99

1.04

1.02

.98

.98

.98

.98

.98

1.01

1.15

1.21

......

Oct.

QQ

.99

OR

.98

.97

1.12

1 57

1.22

1 11

1.00

1.38

1.40

1.46

1.00

1.27

1.62

Nov.

1.62

1.63

1.66

1.24

1.13

1.35

1 19

1.15

1.02

.98

.98

.96

.98

.96

.95

Dec.

1.00

QS

OR

1.48

1.10

1.47

1 64

1.39 i n

1.00

1.47

1.01

1.30

1.03

1.38

1.00
158 WATEE EESOUECES OF HAWAII, 1912.

HONOLUA STREAM BASIN. 

HONOLUA DITCH NEAR HONOKAHAU, MATH.

Location. About 5J miles southwest of Honokahau, about 3 miles above Honolua

ranch, and 150 feet below ditch intake. 

Records available. August 7, 1911, to December 31, 1912.

Gage. Vertical staff; read twice daily, at 6 a. m. and 6 p. m.; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made in flume. 

Accuracy. No discharge rating yet available. 

Cooperation. Honolua Ranch Co. furnishes gage reader and otherwise assists in

obtaining records.

Discharge measurements of Honolua ditch near Honokahau, Maui, in 1912.

Date.

Sept. 13

Dec. 16

Hydrographer.

.....do....................................................................

C. T. Bailey..............................................................

Gage 

height.

Feet. 

0.52

.27

.56

Discharge.

Sec.-feet. 

2.15

.25

2.71

Daily gage height, in feet, of Honolua ditch near HonoTcdhau, Maui, for 1912.

Day.

1.............. .............

2...........................

3.....!.....................

4...........................

5...........................

6...........................

7...........................

8...........................

9...........................

10...........................

11...........................

12...........................

13...........................

14...........................

15...........................

16...........................

17...........................

18...........................

19...........................

20...........................

21*.. .........................

22...........................

23...........................

24...........................

25...........................

26...........................

27..........................

28...........................

29...........................

30..........................

31...........................

Jan.

0.50

.49

.47

.43

.40

.40

.40

.55

.51

.46

.41

.38

.36

.36

.35

.35

.34

.34

.34

.33

.33

.32

.32

.47

.36

.33

.33

.32

.32

.30

.30

Feb.

0.29

.34

.72

.48

.38

.32

.30

.31

.30

.30

.67

.44

.55

.80

.52

.40

.36

.34

.85

on

.85

.80

.89

.83

.90

.58

.90

on

.68

Mar.

0.75

.90

.90

.69

.58

.70

.74

.52

.90

.88

.90

.90

.90

.88

.74

.64

.76

.90

.88

.90

.88

.74

.60

.58

.58

.82

.68

R4

.62

.76

.89

July.

0.63

.85

.83

.74

.77

.66

.56

.62

.80

.80

.70

.75

.85

- .74

.64

.53

64

.45

.42

.32

'.48

.48

.36

.42

.40

.40

.35

.35

.46

AK

.38

Aug.

0.33

.34

.35

.35

.35

.30

.30

.30

.35

.45

.46

.50

.50

.78

.82

.80

.48

.48

.35

.32

.54

.42

.35

.35

.35

.50

.60

40

.40

49

.32

Sept.

0.30

.65

.50

.44

.42

.42

.53

.40

.40

.36

.35

.28

.26

.25

.24

.23

.20

.20

.22

.26

.23

.20

.18

.15

.70

.50

1.45

.20

.40

.76

Oct.

0.53

.58

.42

.30

.50

.27

.30

.32

.32

.32

.37

.54

.77

86

.74

45

.33

Q4

.31

.30

.55

79

.80

.44

df\

.58

.80

.92

.48

K1

.76

Nov.

0.45

.45

.38

.35

.34

.31

.29in

1 00

fin

48

.39

.38

.36

.32

1 fin

on

QE

.78

.68

.76

.76

.68

49

.44

40

4fl

404n40

Dec.

0.74

.58

.99

KQ

CA

.48

.76

.58

Kfl

.46

.41

.40

.40

OQ

an

KB

.36

00

.72

.47

.72

87

.67

.55

.47

KQ

.47

46M

.60

SO

NOTE. Gage not read during April, May, and June.
ISLAND OF MAUI. 159

HONOKAHAU STEEAM BASIN. 

HONOKAHATJ DITCH AT INTAKE, NEAR HONOKAHAU, MAUL

Location. About 9 miles by trail from Honokahau and 250 feet below ditch intake.

Records available. February 3, 1907, to December 31, 1912.

Gage. Vertical staff; read twice daily, at 6 a. m. and 6 p. m.

Channel. Probably permanent.

Discharge measurements. Made from plank at gage.

Accuracy. ^Records good.

Cooperation. Gage is the property of the Honolua Ranch Co.

Discharge measurements of Honokahau ditch at intake, near Honokahau, Maui, in 1912.

Date.

Feb. 29

Mar. 1

Sept. 13

Hydrographer.

.....do..............

.....do..............

Gage 

height.

Inches. 

27.8

17.0

22.2

Discharge.

Sec.-ft. 

30.6

12.6

19.0

Date.

Nov. 27

Hydrographer.

C. T. Bailey........

Gage 

height.

Inches. 

22.0

23.9

Discharge.

Sec.-ft. 

19.2

22.5

Daily gage height, in inches, of Honokahau ditch at intake, near Honokahau, Maui, for

1912.

[Takahashi, observer.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

28.2 

30.4

27.8

27.0

26.5

26.2

28.6

32.8

30.8

27.4

26.1

26.0

25.8

25.5

25.5

25.5

25.5

25.2

25.2

25.2

24.9

24.8

24.8

26.1

24.9

24.8

24.5

24.5

24.1

23.9

23.9

Feb.

23.8 

26.9

33.0

26.2

24.5

24.0

23.9

24.9

25.4

24.1

30.0

24.9

27.5

30.1

24.2

24.0

24.1

23.8

33.5

34.0

34.0

29.8

34.0

34.0

34.0

34.0

34.0

34.0

28.4

.......

Mar.

30.8 

34.0

34.0

30.8

31.0

32.5

32.0

28.0

34.0

33.5

34.0

34.0

34.0

31.9

28.5

97 4

30.8

34.0

32.0

34.0

32.1

28.6

27.8

27.2

27.9

31.5

29.5

29.6

30.8

34.0

33.5

Apr.

32.5

31.5

34.0

34.0

34.0

34.0

34.0

34.0

34.0

34.0

31.5

34.0

32.5

34.0

33.0

34.0

34.0

34.0

34.0

34.0

33.5

34.0

32.8

32.5

31.6

33.0

31.8

30.5

29.6

32.5

May.

30.6 

34.0

34.0

32.0

33.5

32.4

no «

32.6

29.5

29.0

28.6

28.5

28.4

28.1

27.9

27.8

27.6

31.8

30.0

31.0

28.4

27.8

30.8

29.6

34.0

34.0

34.0

32.5

31.0

29.4

June.

27.5 

27.0

26.6

26.5

26.2

26.1

97 9

qq f\

28.5

31.9

qq ft

31.5

32.5

31.9

34.0

30.6

28.0

27.5

27.0

31.0

28.5

31.4

34.0

27.9

27.2

26.5

25.9

25.5

July.

27.5 

27.9

28.0

30.4

31.0

28.0

qo A

30.2

34.0

33.0

33.0

31.5

34.0

32.0

27.4

30.1

28.2

26.2

9A 9

25.9

31.8

28.4

26.8

30.5

25.8

*25.2

27.0 97 n

26.2

25.8

24.9

Aug.

24.5 

24.5

24.4

24.2

24.1

24.0

26.0

25.5

30.8

28.2

31.0

26.4

27.8

34.0

29.4

31.8

97 4

24.9

. 24.2

24.0

27.0

24.2

23.6

23.4

28.6

27.5

24.2

29.5

26.5

25.4

Sept.

23.5 

33.0

25.2

23.8

25.0

23.5

30.0

23.4

24.2

22.9

22.5

22.4

22.0

22.0

21.6

21.5

21.5

21.5

22.5

23.8

22.4

21.9

21.6

21.4

23.2

25.1

26.5

27.2

30.5

Oct.

29.4 

29.0

23.0

29.5

25.2

23.0

22.8

28.8

24.0

22.6

28.2

27.5

30.2

31.0

30.0

23.5

22.4

21.9

21.5

30.5

31.2

28.8

24.5

22.5

30.2

30.8

30.4

23:4

29.0

33.0

Nov.

34.0 

23.8

22.2

23.2

21.8

21.9

21.5

21.8

23.0

34.0

28.0

24.5

22.2

21.5

21.1

21.0

31.5

34.0

29.8

28.1

32.0

29.5

30.5

23.2

22.2

22.0

21.9

21.8

22.0

28.2

Dec.

33.5 

30.0

32.2

24.6

22.4

22.0

34.0

28.0

24.8

27.9

22.2

22.0

21.9

24.0

23.2

24.2

21.9

28.8

33.0

25.2

29.0

34.0

30.4

26.2

29.2

29.8

23.8

28.0

23.8

29.2

28.8
160 WATEE EESOUECES OF HAWAII, 1912.

Daily discharge, in second-feet, of Honokahau ditch at intake, near Honokahau, Maui, for

1912.

Day.

1... ......

2...............

3...............

4..............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14............ ..

15...............

16...............

17...............

18...............

19...............

20...............

21..........!....

22...............

23...............

24...............

25...............

26...............

27..........

28...............

29...............

30...............

31...............

Jan.

31.4

35.8

30.6 90 ft

28.0

27.4

32.2

40.6

36.6

29.8

97 9

97 ft

26.6

26.0

26.0

26.0

26.0

25.4

25.4

25.4

24.8

24.6

24.6

27.2

94 8

24.8

24.0

24.0

oq o

22.8

22.8

Feb.

22.6

28.8

41.0

97 A

OA ft

23.0

22.8

04 Q

25.8

23.2

35.0

94 8

30.0

qc o

O4 Q

23.0

23.2

22.6

42.0

43.0

40 (\

^4 A

43.0

43.0

43.0

43.0

43.0

AO ft

31.8

Mar.

35.0

^O (\

36.6

O7 A

40.0

39.0

01 ft

42.0

43.0

43 ft

40 o

38.8

qo A

9Q S

36.6

43.0 ^Q ft

a°. ft

OQ O

30.6

OQ 4

30.8

38.8

34.8

34.2

36.6

43.0

42.0

Apr.

40.0

38.0

43.0

43 0

43.0

iq (\

43.0

43 0

43.0

43.0

38.0

4q A

43 0

41.0

>iq A

43.0

43.0

43.0

43 ft

42.0

4O A

40.6

40.0

38.2

41.0

38.6

36.0

34 9

40.0

May.

36.2

43 n

43.0

39.0

dO A

39.8

34.2

40.2

34.0

33.0

39 9

39 ft

31.8

qi o

30.8

30.6

30.2

30.2

38.6

35.0

07 A

31.8

30.6

36.6

34.2

43.0

43.0

>iq A

40.0

37.0

33.8

June.

30.0

on A

28.2

OQ A

O7 A

27.2

29.4

41.0

32.0

38.8

41.0

38.0

40.0

38.8

43 ft

36.2

38.0

31.0

30.0

29.0

37 ft

32.0

37.8

iq A

30.8

29.4

28.0

97 ft

26.8

26.0

July.

30.0

30.8

31.0

qc Q

37.0

31.0

39.0

qc A

43.0

41.0

41.0

38.0

43.0

OQ O

OQ Q

35 2

31.4

27.4

27.4

26.8

38.6

31.8

28.6

36.0

26.6

25.4

29.0

29.0

27.4

26.6

24.8

Aug.

24.0

24.0

23.8

Oq A

23 2

<>i ft

07 A

26.0

36.6

31.4

Q7 A

27.8

30.6

43.0

qq Q

38.6

29.8

24.8

23.8

93 4

93 ft

29 0

23.4

99 9

21.8

32.2

30.0

93 4

34.0

28.0

25.8

Sept.

22.0

41.0

99 A

oe A

99 ft

35.0

O1 Q

oq A

20.8

20.0

1Q S

19.0

19.0

to A

18.2

18.2

18.2

23.8

20.0

22.6

18.8

18.4

18.1

21.4

25.2

28.0

29-4

36.0

Oct.

33.8

Oq A

91 A

<tA ft

OK A

21.0

20.6

qO A

9°. ft

20.2

31.4

30.0

3"! 4

37 ft

35.0

22.0

19.8

18.8

18.4

18.3

36.0

37 4

32.6

24.0

20.0

35.4

36.6

35.6

21.8

33.0

41.0

Nov.

43.0

22.6

21.4

18.7

18.8

18.2

18.7

91 ft

43.0

31.0

94 ft

19.4

18.2

17.6

17.5

38.0

43.0

34.6

31.2

39.0

34.0

36.0

21.4

19.4

19.0

18.8

18.7

19.0

31.4

Dec.

42.0

qc ft

qo A

94 9

1Q Q

19.0

43.0

Of ft

24.6

30.8

1Q 4

1Q ft

18.8

oq A

91 d

23 .4

18.8

32.6

41.0

25.4

33.0

43.0

35.8

27.4

33.4

34.6

22.6

31.0

22.6

33.4

32.6

Monthly discharge of Honokahau ditch at intake, near Honokahau, Maui, for 1912.

Month.

April. .............................................

July...............................................

November............ . . . .........

Discharge in second-feet.

Maximum.

40.6 

43.0 

43.0 

43.0 

43.0 

43.0 

43.0 

43.0 

41.0 

41.0 

43.0 

43.0

43.0

Minimum.

22.8 

22.6 

29.4 

34.2 

30.2 

26.0 

24.8 

21.8 

18.1 

18.3 

17.5 

18.8

17.5

Mean.

27.4 

32.2 

37.8 

41.2 

36.0 

33.1 

32.8 

28.0 

23.0 

28.5 

25.9 

29.1

31.3

Run-off 

(total in 

acre-feet).

1,680 

1,850 

2,320 

2,450 

2,210 

1,970 

2,020 

1,720 

1,370 

1,750 

1,540 

1,790

22,700

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

HONOKAHAU DITCH AT HONOKAWAI WEIR, NEAR HONOKAHAU, MAUI.

Location. About 8 miles north of Lahaina and 6 miles south of Honolua ranch

office.

Records availablei January 1, 1910, to December 31, 1912. 

G-age. Friez automatic clock register.

Discharge measurements. By contracted weir consisting of three 5-foot panels. 

Cooperation. Weir is the property of and records are furnished by the Honolua

Ranch Co,
ISLAND OF MAUI. 161

Daily discharge, in million gallons, of Honokahau ditch at Honokawai weir, near Honokahau, Mauijfor 1912.

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9............... 10...............

11...............

12. ..............

13...............

14...............

15...............

16...............

17...............

18....:.........-

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29. ............. .

30............... 

31...............

Jan.

14.00

14.20

13.40

12.50

12.10

11.90

12.80

14.90

14.20

12.60

11.90

11.60

11.40

11.20

11.00

11.60

10.90

10.80

10.80

10.90

10.80

10.60

10.90

12.00

11.40

11.00

10.60

10.50

10.20

10.10 

10.20

Feb.

9.90

12.30

14.50

12.40

11.00

10.50

9.50

10.70

11.80

8.60

12.30

11.40

12.80

13.20

10.90

10.30

10.00

9.60

14.80

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

Mar.

14.70

15.00

15.00

15.00

15.00

15.00

14.30

1J. .dfi

15.00

15.00

15.00

15.00

15.00

15.00

15.00

14 50

14.90

15.00

15.00

15.00

15.00

15.00

14.40

13.70

13.80

15.00

15.00

14.50

14.90

15.00 

15.00

Apr.

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.00

15.09

15.00

May.

15.00

15.00

15.00

15.00

W on

14.70

13.60

14.90

13.90

13.10

13.40

13.50

13.20

13.10

13.10

13.40

13.10

13.20

15.00

15.00

15.00

14.30

13.50

13.70

10.00

14.60

15.00

15.00

15.00

15.00 

15.00

June.

13.60

13.10

12.60

12.20

12.00

11.80

12.20

U sn

13.60

14.20

15.00

14.30

14.90

14.40

15.00

15.00

14.90

13.60

13.40

12.30

13.20

12.90

13.20

14.20

12.90

n

on

11.60

8.90

10.70

10.40

July.

10.30

11.60

11.80

11.70

12.20

13.30

13.30

13.00

13.30

14.90

14.90

14.70

14.30

13.60

14.50

12.40

12.80

12.80

11.20

10.80

10.80

13.30

12.30

11.10

12.20

10.50

10.20

11.20

10.90

10-40 

9.70

Aug.

9.40

9.10

9.10

9.20

8.90

9.00

8.90

11.20

10.40

12.00

12.50

13.80

12.80

7.30

12.50

14.70

13.70

11.60

10.30

9.70

9.30

9.20

11.80

9.80

9.10

8.70

11.70

12.10

11.40

12.30 

11.10

Sept.

10.10

9.70

13.50

10.70

10.00

9.20

11.30

12.50

10.40

9.60

8.60

8.20

7 60

7.80

7.60

7 60

7.40

7.60

8.00

8.30

9.20

8.40

7.50

7.60

7.50

7.40

8.00

8.40

8.83

12.40

Oct.

12.40

10.00

12.40

8.80

11.10

11.00

8.40

ft 7fl

8.50

8.20

8.90

12.10

13.50

13.60

14.10

13.20

9 At)

8.20

7 60

7.10

7.10

13.00

14.90

12.40

9.40

8.70

11.40

13.30

13.00

9.10 

9.20

Nov.

13.60

9.20

8.60

8.20

7.30

7.10

6.80

6 40

8.50

14.80

12.30

11.00

S 4ft

7.70

7.30

10.20

12.50

9.20

8.20

7 Oft

6.50

5.70

7.20

15.00

14.20

15.00

12.70

13.50

14.60

13.50

Dec.

10.70

13.70

19 £A

13 7A

10.00

9 1ft

10.90

14.10

10.90

10.30

8.60

8.00

7.50

7.30

7 An

8 V\

9 1ft

7.70

11.20

14.10

10.50

13.40

14.50

13.80

11.40

10.60

11.60

9.10

9.90

9.50 

11.20

Monthly discharge of Honokahau ditch at HonoTcawai weir, near Honokahau, Mam,

for 1912.

Month.

May.....................................................

July.....................................................

Discharge in million gallons.

Maximum.

14.9 

15.0 

15.0 

15.0 

15.0 

15.0 

14.9 

14.7 

13.5 

14.9 

15.0 

14.5

15.0

Minimum.

10.1 

8.6 

13.7 

15.0 

10.0 

8.9 

9.7 

7.3 

7.4 

7.1 

5.7 

7.3

5.7

Mean.

11.70 

12.60 

14.80 

15.00 

14.10 

13.10 

12.30 

10.70 

9.03 

10.60 

10.10 

10.70

12.10

Run-off 

(total in 

million 

gallons).

363 

366 

459 

450 

437 

393 

380 

333 

271 

329 

303 

331

4,420

14694° WSP 336 14 11
162 WATER RESOURCES OP HAWAII, 1912.

MISCELLANEOUS MEASUREMENTS.

The following miscellaneous discharge measurements have been 

made by J. B. Stewart on streams of West Maui:

Miscellaneous "measurements on West Maui in 1912. 

Kahakuloa Stream above Kahakuloa, near Wailnku, Haul.

Date.

Aug. 28......................

14......................

Gage 

height.

Feet. 

0.68

.75

.65

Discharge.

Stc.-ft.. 

5.6(f

7.88

6.10

Date.

Oct. 1... ....................

16.......................

31.......:...............

Gage 

height.

Feet. 

0.85

.77

1.05

Discharge.

Sec.-ft. 

9.92

8.58

19.3

Honokahua ditch above Honolua Stream, Honokahau, Haul.

Mar. 1........ ................

1........................

28.3 

23.2

28.3 

19.8

Sept. 13...................... 22.1 16.1

South Walehu ditch near Wailuku, Haul.

July 13. ......................

16.......................

0.48 

.45

4.16 

3.79

Sept.6. ......................

Nov.21..... ..................

0.42 

.43

3.47 

4.27

East Maul.

KOOLAU DITCH REGION. 

EOOLAtT DITCH NEAR KEAKTAE, HAUL

Location. About 3 miles southwest of Keanae, at portal of tunnel extending

from Keanae Valley to Alo Stream.

Records available. January 1,1910, to December 31, 1912. 

Gage. Vertical staff; read twice daily, at 6 a. m. and 6p.m. 

Channel. Straight and probably permanent. 

Discharge measurements. Made from pknk. 

Accuracy. Very good. 

Cooperation. Gage belongs to and records are furnifihed annually by East Maui

Ditch Co.

The following discharge measurement was made by J. B. Stewart: 

January 11, 1912: Gage height, 24.5 inches; discharge, 44.8 second-feet.
ISLAND OF MAUI. 163 

Daily gage height, in inches, of Koolau ditch near Keanae, Maui, for 1912.

Day.

1.. ...... .......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

34.2

37.0

33.4

31.2

29.8

28.2

27.2

28.2

27.4

25.0

24.4

23.6

23.1

22.9

22.1

21.6

21.2

20.6

20.0

19.1

18.5

18.5

19.4

18.5

17.8

17.1

16.6

16.2

16.0

16.4

16.2

Feb.

16.4

15.9

16.0

15.4

14.9

14.8

14.6

15.8

28.8

17.8

16.5

16.5

42.0

23.0

19.1

17.8

16.9

16.4

33.5

56.0

56.0

55.5

53.8

46.2

42.2

45.6

56.1

56.2

55.8

.......

Mar.

55.8

55.9

56.0

55.5

54.0

54.0

55.2

53.8

54.0

54.5

56.5

56.0

56.0

54.8

53.0

48.0

48.0

54.2

51.8

50.8

47.5

42.2

39.8

38.0

43.0

46.0

36.9

34.2

54.5

54.8

52.8

Apr.

55.4

54.2

56.1

57.8

56.5

56.0

56.8

56.0

56.0

55.6

55.0

56.0

54.8

55.2

54.5

55.0

55.0

52.8

50.8

52.2

50.8

51.2

49.2

48.5

51.5

52.5

53.5

47.5

41.0

40.6

May.

37.5

38.0

38.0

49.5

51.5

47.5

40.1

47.8

38.5

35.0

33.0

30.6

30.0

30.4

28.1

27.2

26.2

25.9

26.0

29.0

26.8

25.2

23.2

24.5

22.5

32.0

45.4

31.9

31.2

26.9

25.8

June.

23.8

23.0

22.0

21.4

20.8

20.1

20.5

23.9

22.2

37 A.

37.5

29.2

30.2

27.8

25.2

26.2

23.9

22.5

26.4

25.1

31.9

25.2

23.0

39.5

27.5

24.5

23.5

22.2

21.2

20.4

July.

21.5

22.0

24.5

32.1

27.8

24.0

22.5

33.2

45.5

30.5

31.8

26.8

29.6

27.2

24.0

OQ 1

21.8

21.0

20.1

19.2

20.0

19.0

18.2

25.1

22.4

20.8

21.6

22.0

24.5

21.4

18.6

Aug.

18.0

17.4

18.2

17.1

16.5

15.9

17.8

16.0

20.8

21.0

32.1

28.9

26.5

35.0

47.4

36.8

27.1

24.9

25.4

22.6

21.9

28.5

22.5

22.1

19.5

21.6

21.8

22.0

25.4

21.5

24.5

Sept.

23.9

53.2

46.8

49.1

35.2

39.5

52.6

37.0

31.8

29.0

26.6

25.5

24.5

23.0

22.4

21.8

21.0

20.0

19.8

19.9

18.8

18.0

17.4

17.2

16.9

16.5

16.5

16.0

16.4

40.9

Oct.

23.1

28.8

24.0

19.6

18.2

17.5

18.1

18.8

26.8

23.6

23.5

22.2

22.6

49.5

41.0

35.0

27.1

24.4

22.9

26.0

56.5

61.5

60.5

56.2

43.5

47.2

63.0

60.0

53.2

56.5

63.5

Nov.

51.8

46.8

55.0

44.0

35.2

32.5

34.0

33.0

63.5

58.8

56.2

46.0

41.5

36.5

36.0

63.5

61.5

63.5

58.5

57.0

53.8

55.5

52.5

46.8

50.8

45.5

42.0-

40.8

37.8

37.0

Dec.

47.8

63.5

59.2

55.0

53.5

52.0

50.5

44.2

40.2

38.5

30.0

32.8

32.0

34.0

31.8

45.0

33.2

49.8

51.2

50.0

5.4.0

58.5

59.5

56.5

51.5

56.5

54.2

51.5

45.8

41.2

41.2

Daily discharge, in second-feet, of Koolau ditch near Keanae, Maui, for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

76.8

88.0

73.6

64.8

60.4

55.6

52.6

55.6

53.2

46.0

44.2

41.8

40.3

39.7

37.3

35.8

34.6

33.2

32.0

30.2

29.0

29.0

30.8

29.0

27.6

26.2

25.2

24.4

24.0

24.8

24.4

Feb.

24.8

23.8

24.0

22.8

21.8

21.6

21.2

23.6

57.4

27.6

25.0

25.0

108.0

40.0

3ft 9

27.6

25.8

24.8

74.0

175.0

175.0

172.0

164.0

126.0

109.0

123.0

176.0

176.0

174.0

Mar.

174.0

174.0

175.0

172.0

165.0

165.0

171.0

164.0

165.0

168.0

178.0

175.0

175.0

169.0

160.0

135.0

135.0

166.0

154.0

149.0

132.0

109.0

99.2

92.0

112.0

125.0

87.6

76.8

168.0

169.0

159.0

Apr.

172.0

166.0

176.0

184.0

178.0

175.0

179.0

175.0

175.0

173.0

170.0

175.0

169.0

171.0

168.0

170.0

170.0

159.0

149.0

156.0

149.0

151.0

141.0

138.0

152.0

158.0

162.0

132.0

104.0

102.0

May.

90.0

92.0

92.0

142.0

152.0

132.0

100.0

134.0

94.0

80.0

72.0

62.8

61.0

62.2

55.3

52.6

49.6

48.7

49.0

58.0

46.6

40.6

44.5

38.5

68.0

122.0

67.6

64.8

51.7

48 4

June.

42.4

40.0

37.0

35.2

33.6

32.2

33.0

42.7

37.6

89.6

90.0

58.6

61.6

54.4

46.6

49.6

42.7

38.5

50.2

46.3

67.6

46.6

40.0

98.0

53.5

44 5

41.5

37.6

34.6

32.8

July.

35.5

37.0

44.5

68.4

54.4

43.0

38.5

72.8

122,0

62.5

67.2

51.4

59.6

52.6

43.0

40.3

36.4

34.0

32.2

3ft i

32.0

30.0

28.4

46.3

38.2

33.6

35.8

37.0

44.5

35.2

29.2

Aug.

28.0

26.8

28.4

26.2

25.0

23.8

27.6

24.0

33.6

34.0

68.4

57.7

50.5

80.0

132.0

87.2

52.3

45.7

47.2

38.8

36.7

56.5

38.5

37.3 31" ft

35.8

36.4

37.0

47.2

35.5

44.5

Sept.

42.7

161.0

129.0

140.0

80.8

98.0

158.0

88.0

67.2

58.0

50.8

47.5

44.5

40.0

38.2

36.4

34.0

32.0

31.6

31.8

29.6

28.0

26.8

26.4

25.8

25.0

25.0

24.0

24.8

104.0

Oct.

40.3

57.4

43.0

31.2

28.4

27.0

28.2

29.6

51.4

41.8

41.5

37.6

38.8

142.0

104.0

80.0

52.3

44.2

39.7

49.0

178.0

202.0

198.0

176.0

114.0

131.0

210.0

195.0

161.0

178.0

212.0

Nov.

154.0

129.0

170.0

116.0

80.8

70.0

76.0

72.0

212.0

189.0

176.0

125.0

106.0

86.0

84.0

212.0

202.0

212.0

188.0

180.0

164.0

172.0

158.0

129.0

14.Q ft

122.0

108.0

103.0

91.2

88.0

Dec.

134.0

212.0

191.0

170.0

162.0

155.0

148.0

117.0

101.0

94.0

61.0

71.2

68.0

76.0

67.2

120.0

72.8

144.0

151.0

145.0

165.0

188.0

192.0

178.0

152.0

178.0

166.0

152.0

124.0

105.0

105.0
164 WATEE RESOURCES OF HAWAII, 1912.

Monthly discharge of Koolau ditch near Keanae, Maui, for 191%.

Month.

May...............................................

July...............................................

October. . ................................

NoTember. ............................... ... .

Discharge in second-leet.

Maximum.

88.0 

176.0 

178.0 

184.0 

152.0 

98.0 

122.0 

132.0 

161.0 

212.0 

212.0 

212.0

212.0

Minimum.

24.0 

21.2 

76.8 

102.0 

38.5 

32.2 

28.4 

23.8 

24.0 

27.0 

70.0 

61.0

21.2

Mean.

41.6 

76.5 

149.0 

160.0 

74.9 

48.6 

45.7 

44.3 

58.3 

95.6 

137.0 

134.0

88.8

Run-off 

(total in 

acre-feet).

2,560 

4,400 

9,160 

9,520 

4,610 

2,890 

2,810 

2,720 

3,470 

5,880 

8,150 

8,230

64,400

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

SPRECKELS DITCH REGION. 

HAIPTTAENA STREAM NEAR HTJELO, MATJT.

Location. About 6J milea by trail southeast of Huelo post office, about 400 feet 

below point where the Spreckels ditch joins the stream.

Records available. December 18, 1910, to December 31, 1912.

Drainage area. Not mapped.

Gage. Vertical staff; read once daily, about 4 p. m.; datum unchanged.

Channel. Rough and shifting.

Discharge measurements. Made by wading; no equipment for flood measurements.

Accuracy. A fairly well defined rating curve has been developed for ordinary

Cooperation. Station maintained in cooperation with East Maui Ditch Co. 

Discharge measurements of Haipuaena Stream near Huelo, Maui, in 1912.

Date.

Sept. 23

Nov. 10

Hydrographer.

.....do....................................................................

Gage 

height.

Feet. 

0.40

1.30

Discharge.

Sec.-ft. o6.4

647.0

a Measurements at Spreckels ditch station No. 4. 

6 Haipuaena and Spreckels ditch at station No. 3.

Daily gage height, infect, of Haipuaena Stream near Huelo, Maui, for 1912. 

[Kumagai, observer.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6... ............

7...............

8...............

9...............

10...,....,.,..,.

Jan.

0.78

1.00

.80

.75

.70

.68

.65

.68

.73

. .63

Feb.

0.31

.30

.30

.30

.28

.27

.23

.70

.43

.49

Mar.

1.40

1.65

1.53

1.43

1.38

1.35

1.60

1.33

1.53

1.50

Apr.

1.48

1 f;n

1.60

2 on

1.80

i AI\

2.50

2.20

1.60

May.

0.93

.93

1.30

1.40

1.33

1.25

1.10

1.30

1.00

,90

June.

0.63

.63

.60

.53

.50

.47

.50

.70

.83

1.50

July.

0.85

1.20

1.30

1.33

1 23

.95

.82

1.50

1.30

1.03

Aug.

0.60

.58

.63

.50

.48

.45

.45

.43

.95

.95

Sept.

0.80

1.70

1.33

1.30

1.00

1.23

1.30

1.03

.90

.85

Oct.

0.78

1.60

.78

60

.55

.45

.50

.50

.71

.63

Nov.

1.30

1.10

1.30

.98

.90

.88

.88

.75

2.70

1.50

Dec.

1.20

1.55

1.65

1.35

1.18

.73

1.20

1.05

.98

.90
ISLAND OF MAUI. 165 

Daily gage height, in feet, ofHaipuaena Stream near Huelo, Maui,for 1912 Continued.

Day.

n.. .............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27......:........

28...............

29...............

30...............

31...............

Jan.

0.58

.53

.51

.50

.48

.45

.43

.41

.40

.39

.38

.35

.34

.68

.48

.39

.36

.33

.32

.30

.40

Feb.

0.40

1.00

.8ft

.58

.48

.48

.48

.40

1.23

2.00

2.50

1.50

1.33

1.10

1.13

1.45

1.90

1.55

1.45

Mar.

2.90

1.60

1.55

1.40

1.30

1.18

1.38

1.40

1.50

1.30

1.20

1.00

1.15

1.00

1.00

1.35

1.03

.98

.85

1.98

1.58

Apr.

1 40

1.53

1.35

1.45

1.38

1.50

1.45

1.40

1.33

1.68

1.35

1.40

1.20

1.15

1.40

1.48

1.33

1.15

1.05

1.00

May.

0.83

.78

.73

.70

.65

.65

.60

.60

.60

.75

.63

.53

.50

.68

.50

1.60

1.30

1.15

.90

.78

.70

June.

1 40

1.00

1.10

.85

.93

1.00

.78

.70

.98

1.25

1.30

.83

.80

1.10

.83

.78

.83

.75

.68

.63

July.

1.20

.95

1.10

1.13

.93

.83

.78

.75

.70

.70

.68

.63

.58

.93

.93

..80

.95

.80

1.03

.73

.65

Aug.

1.13

1.00

1.10

1.65

1.33

1.03

.88

.85

.88

.75

.70

1.25

.83

.70

.65

.80

.83

.63

.90

.83

.80

Sept.

0.80

.70

.70

.63

.60

.58

.58

.50

.48

.50

.45

.43

.43

.45

.40

.38

.35

.33

.45

1.50

Oct.

0.65

.80

.79

1.33

1.05

.83

.73

.58

.53

.78

1.65

1.6&

1.45

1.33

1.05

1.35

2.10

1.50

1.30

1.35

1.25

Nov.

1.33

1.10

1.00

.90

.80

2.10

1.48

2.00

1.35

1.50

1.35

1.28

1.20

1.03

1.35

1.60

.97

.95

.80

.90

Dec.

1.83

.80

.75

.93

.75

.90

.73

.80

2.05

1.10

1.90

f.70

2.00

1.53

1.30

1.45

1.30

1.35

1.15

1.03

.98

Daily discharge, in second-feet, of Haipuaena Stream near Huelo, Maul, for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

99

23...............

24...............

25

26...............

27...............

28

29...............

30...............

31_... ...........

Jan.

17.7

28.0

18.5

16.5

14.5

13.8

12.8

13.8

15.7

12.0

10.5

9.6

8.8

8.5

8.0

7.2

6.8

6.3

6.0

5.8

5.6

5.0

4.8

13.8

8.0

5.8

5.2

4.6

4.4

4.0

6.0

Feb.

4.2

4.0

4.0

4.0

3.7

3.6

3.0

14.5

6.8

8.2

6.0

28.0

18.5

10.5

8.0

8.0

8.0

6.0

40.8

96.0

136.0

59.0

47.1

33.0

34.8

55.5

88.0

62.5

55.5

Mar.

52.0

69.5

61.1

54.1

60.6

48.5

66.0

47.1

61.1

59.0

169.0

66.0

62.5

52.0

45.0

37.8

50.6

52.0

59.0

45.0

39.0

28.0

36.0

28.0

2g.O

48.5

29.5

217.0

20.8

94.4

64.6

Apr.

57.6

59.0

66.0

169.0

80.0

52.0

136.0

112.0

59.0

66.0

52.0

61.1

48.5

55.5

50.6

59.0

55.5

52.0

47.1

71.6

48.5

52.0

39.0

36.0

52.0

57.6

47.1

36.0

30.5

28.0

May.

24.5

24.5

45.0

52.0

47.1

42.0

33.0

45.0

28.0

23.0

19.8

17.7

15.7

14.5

12.8

12.8

11.0

11.0

11.0

16.5

12.0

9.2

8.5

13.8

8.5

66.0

45.0

36.0

23.0

17.7

14.5

June.

12.0

12.0

11.0

9.2

8.5

7.8

8.5

14.5

19.8

59.0

52.0

28.0

33.0

20.8

24.5

28.0

17.7

14.5

27.0

42.0

45.0

19.8

18.5

33.0

19.8

17.7

19.8

16.5

13.8

12.0

July.

20.8

39.0

45.0

47.1

40.8

25.5

19.4

59.0

45.0

29.5

25 5

33.0

24.8

24.5

19.8

17.7

16.5

14.5

14.5

13.8

12.0

10.5

24.5

24.5

18.5

25.5

18.5

29.5

15.7

12.8

Aug.

11.0

10.5

12.0

8.5

8.0

7.2

7.2

6.8

25.5

25.5

34.8

28.0

33.0

69.5

47.1

29.5

22.1

20.8

22.1

16.5

14.5

42.0

19.8

14.5

12.8

18.5

19.8

12.0

23.0

19.8

18.5

Sept.

18. 3

73.0

47.1

45.0

28.0

40.8

45.0

29.5

23.0

20.8

18.5

14.5

14.5

12.0

11.0

10.5

10.5

8.5

8.0

8.5

7.2

6.8

6.8

7.2

6.0

5.6

5.0

4.6

7.2

59.0

Oct.

17.7

66.0

17.7

11.0

9.8

7.2

8.5

8.5

14.9

12.0

12.8

18.5

18.1

47.1

30.5

19.8

15.7

10.5

9.2

17.7

69.5

62.5

55.5

47.1

30.5

48.5

104.0

59.0

45.0

48.5

42.0

Nov.

45.0

33.0

45.0

27.0

23.0

22.1

22.1

16.5

152.0

59.0

47.1

33.0

28.0

23.0

18.5

104.0

57.6

96.0

48.5

59.0

48.5

43.8

39.0

29.5

48.5

66.0

26.5

25.5

18.5

23.0

Dec.

39.0

62.5

69.6

48.5

37.8

15.7

39.0

30.5

27.0

23.0

82.4

18.5

16.5

24.5

16.5

23.0

15.7

18.5

100.0

33.0

88.0

73.0

96.0

61.1

45.0

55.5

45.0

48.5

36.0

29.5

27.0
166 WATER RESOURCES OF HAWAII, 1912.

*

Monthly discharge of Haiptuiena Stream near Huelo, Maui, for 1912.

Month.

January ...........................................

February. .........................................

April..............................................

May................................ .....

July...............................................

August. . ..........................................

September. ............................... ....

October. ...........................................

November. ................................. ....

Discharge in second-feet.

Maximum.

28.0 

136.0 

169.0 

109.0 

66.0 

59.0 

59.0 

69.5 

73.0 

104.0 

152.0 

100.0

169.0

Minimum.

4!o

3.0 

20.8 

28.0 

8.5 

7.8 

10.5 

6.8 

4.6 

7.2 

16.5 

15.7

3.0

Mean.

9.94 

29.60 

53.30 

61-20 

24.60 

22.20 

26.30 

21.30 

20.10 

31.80 

44.30 

43.40

32.30

Run-off 

(total in 

acre-feet).

611 

1,700 

3,280 

3,640 

1,510 

1,320 

1,620 

1,310 

1,200 

1,960 

2,640 

2,670

23,500

Accuracy.

B. 

B. 

A. 

A. 

B. 

B. 

B. 

B. 

B. 

A. 

A. 

A,

PUOHAKAMOA STREAM NEAR HUELO, HAUL

Location. About 6J miles by trail southeast of Huelo post office, immediately below

point where Spreckels ditch falls into stream. 

Records available. December 18, 1910, to December 31, 1912. 

Gage. Vertical staff; read once daily, at no regular hour, but usually about 5p.m.;

datum unchanged. 

Channel. Practically permanent. 

Discharge measurements. Made by wading. 

Accuracy. Records good. 

Cooperation. Station maintained in cooperation with East Maui Ditch Co.

Discharge measurements of Puohakamoa Stream near Huelo, Maui, in 1912.

Date.

Sept. 23

Nov. 8

Hydrographer.

J.B.'stewart.. ...........................................................

.....do....................................................................

Gage 

height.

Feet. 

0.45

1.64

Discharge.

Sec.-feet. 

11.1

67.1

Dally gage height, in feet, of Puohakamoa Stream near Huelo, Maui, for 1912.

[Tokunaga, observer.]

Day.

1....... ........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9............... 

10.. ..............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

1.01

1.22

.92

.81

.79

.73

.87

.81

.70 

.67

.59

KZ

.52

.51

.50

.48

.45

.42

.40

.39

Feb.

0.28

.28

.28

.26

.24

.22

.21

.72

.48 

.32

.30

1.65

1.38

.67

.32

.32

.31

.32

1.40

2.25

Mar.

1.90

2.16

2.20

1.64

1.52

1.50

1.98

1 79

1.70 

1.85

3.25

2

OC

2 7ft

1 7*1

1.48

1 90

1.38

1.73

1 80

1.78

Apr.

1.76

1.91

2.12

4 50

2.41

1.70

2.18

3

CA

1.95 

1.82

1.65

1 01

1 46

2 AC

1.65

i f\±

I

fifl

1.51

1.50

1.95

May.

1.05

1.10

1.40

1.46

1.58

1.39

1 10

1 eo

1.18 

1 05

O7

QA

84

79

.70

.68

.67Ri

.70

.90

June.

0.73

.72

.67

.54

.43

.40

.43

.81

.67 

2.30

1.70

1.05

1.60

07

1.22

i no

.95

no

1.08

1.10

July.

1.06

1.49

1.72

1.68

1.28

1.04

.90

1 60

1.50

1 99

1.15

1.06

1 13

1 49

1.18

OK

.90

79

.70

.69

Aug.

0.66

.64

.70

.46

.42

.41

.43

.41

1.28 

.98

1.30

1 09

1 oo

1.43

1 40

1.18

07

91

1

AO

.99

Sept.

0.98

2.18

1.50

1.40

1.17

1 4fl

1.62

1.30

1.04 

.98

.87

.81

.75

.70

.68

.63

fi9

CO

Kf\

,54

Oct.

1.00

1.50

1.25

.58

.55

Vt

.52

CO

1.00

.67

.82

00

«n

2

1 n

1.15

1.00

.75

.71

65

.70

Nov.

1 W

1.30

1.43

1.13

.90

.88

.86

.88

.35

1 fiO

i im

1 9Q

1.12

1.01

.88

3.20

2 1 f\

2.40

I

on

1.65

Dec.

1.50

2.20

3.34

1 A<)

1.45

1 19

i 3^

1 18

1.05 

1.00

so

QK

fil

1.00

.85

89

CO

9 i\f\

1.75

1.67
ISLAND OP MAUI. 167

Daily gage height, injeeit oj Puohakamoa Stream near Huelo, Maui, for 1912 Contd.

Day.

21...............

22

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31

Jan.

6.37

.35

.32

.80

.45

.32

.30

.29

.29

.28

QQ

Feb.

2.89

1.95

1.60

1.34

1.35

1.24

2.62

2.11

1.92

Mat.

1.42

1.22

1.10

1.07

1.00

1.25

1.12

1.00

.98

2.48

1.57

Apr.

1.64

1.70

1.65

1.69

1.80

1.82

1.58

1.52

1.28

1.18

May.

0.88

.56

.50

.71

.55

1.61

1.42

1.20

.98

.96

71

June.

1.38

.91

.72

1.35

.91

.89

.97

.88

.74

.68

July.

0.66

.70

.65

1.32

.97

.89

1.03

.93

1.12

.70

.68

Aug.

0.73

1.45

.90

.71

.68

.99

.87

.68

1.41

.95

<U

Sept.

0.50

.48

.43

.48

.45

.45

.44

.42

.50

1.40

Oct.

0.95

2.40

1.78

1.47

1.10

1.03

3.03

1.88

1.50

1.62

1.54

Nov.

1.68

1.39

1.65

1.19

1.62

1.25

1.17

L02

.92

.88

Dec.

1.84

1.80

3.40

1.65

1.30

1.45

1.38

1.40

1.23

1.30

1.12

Daily discharge, in second-feet, of Puohakamoa Stream near Huelo, Maui, for 1912.

Day.

1.. .............

2...............

3...............

4.. .............

5...............

6...............

7...............

8...............

9...............

10...............

11..............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21.:.............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

34.5

45.0

30.0

24.5

23.6

21.2

27.5

24.5

20.0

18.8

15.6

14.0

12.8

12.4

12.0

11.2

10.0

8.8

8.0

7.7

7.1

6.5

5.6

24.0

10.0

5.6

5.0

4.8

4.8

4.6

7.7

Feb.

4.6

4.6

4.6

4.2

3.8

3.4

3.2

20.8

11.2

5.6

5.0

69.0

53.0

18.8

5.6

5.6

5.3

5.6

54.0

110.0

160.0

88.5

66.0

51.0

51.5

46 0

139.0

QQ 7

86.4

Mar.

85.0

103.0

106.0

68.4

61.2

60.0

90.6

73.2

72.0

81.5

189.0

110.0

145.0

75.0

58.8

48.5

53.0

73.8

78.0

76.8

55.2

45.0

39.0

37.5

340

46 5

40.0

qx fl

33.0

127.0 

64.2

Apr.

75.6

85.7

100.0

289.0

122.0

72.0

105.0

209.0

88.5

79.4

69.0

85.7

57.6

95.5

69.0

68.4

66.0

60.6

60.0

88. 5

68.4

72.0

69.0

71.4

78.0

79 4

64.8

61.2

48 0

43.0

May.

36.5

39.0

54.0

57.6

64.8

53.5

43.5

61.8

43.0

36.5

32.5

29.0

26.0

23.6

20.0

19.2

18.8

18.0

20.0

29.0

28.0

14.4

12.0

20.4

14.0

66.6

ee o

44 0

33.0

32.0 

21.2

June.

21.2

20.8

18.8

13.6

9.2

8.0

9.2

24.5

18.8

113.0

72.0

36.5

66.0

32.5

45 0

38.5

31.5

30.0

38.0

to n

53.0

29.5

20.8

51.5

29.5

QQ E

00 E

QQ A

Q1 ft

19.2

July.

37.0

59.4

73.2

70.8

48.0

36.0

29.0

66.0

60.0

45.0

41.5

37.0

40.5

55.2

43.0

33.0

29.0

23.6

20.0

1Q fi

18.4

20.0

18.0

50.0

32.5

28.5

35.5

in fi

40.0

20.0 

19.2

Aug.

18.4

17.6

20.0

10.4

8.8

8.4

9.2

8.4

48.0

33.0

49.0

38.5

45.5

55.8

54.0

43.0

32.5

29.5

qc ri

33.5

21.2

57.0

on fl

20.4

1O 9

33.5

27.5

1O 9

54.6

31.5 

31.0

Sept.

33.0

105.0

60.0

54.0

42.5

54.0

67.2

49.0

36.0

33.0

27.5

24.5

22.0

20.0

19.2

17.2

16.8

13.2

12.0

13.6

12.0

11.2

9.2

11.2

10.0

10.0

a

c

8.8

12.0

54.0

Oct.

34.0

60.0

46.5

15.2

14.0

12.0

12.8

12.8

34.0

18.8

25.0

28.0

24.0

99.0

41.5

34.0

2?.0

20.4

18.0

20.0

31.5

121.0

76.8

58.2

39.0

35.5

171.0

83.6

60.0

67.2 

62.4

Nov.

.60.0

49.0

55.8

40.5

29.0

28.0

27.0

28.0

6.5

71.4

60.0

48.0

40.0

34.5

28.0

185.0

102.0

121.0

79.4

69.0

70.8

53.5

69.0

43.5

67.2

46.5

42.5

35.0

30.0

28.0

Dec.

60.0

106.0

196.0

55.2

57.0

40.0

51.5

43.0

36.5

34.0

28.5

26.5

24.5

34.0

26.5

25.0

25.0

129-0

75.0

70.2

80.8

78.0

201.0

69.0

49.0

57.0

53.0

54.0

45.5

49.0 

40.0

Monthly discharge of Puohakamoa Stream near Huelo, Maui, for 1912.

Month.

 April..............................................

May...............................................

July...............................................

August............................................

Discharge in second-feet.

Maximum.

45.0 

160.0 

189.0 

289.0 

66.6 

113.0 

73.2 

57.0 

105.0 

171.0 

185.0 

201.0

289.0

Minimum.

4.6 

3.2 

33.0 

43.0 

1?.0 

8.0 

18.0 

8.4 

8.8 

12.0 

6.5 

24.5

3.2

Mean.

15.1 

40.9 

73.0 

86.7 

34.4 

33.3 

38.0 

30.4 

28.9 

45.1 

54.9 

61.9

45.2

Run-off 

(total in 

acre-feet).

928 

2,350 

4,490 

5,160 

2,120 

1,980 

2,340 

1,870 

1,720 

2,770 

3,270 

3,810

32,800

Accuracy.

B. 

B. 

B. 

B. 

A. 

A. 

A. 

A. 

B. 

B. 

B. 

B.
168 WATEB BESOUBCES OP HAWAII, 1912.

ALO STREAM NEAR HTJELO, MAUL

Location. About 5 miles by trail southeast of Huelo post office, immediately below 

wagon bridge where Old Spreckels ditch trail crosses stream.

Records available. December 18, 1910, to December 31, 1912.

Gage. Vertical staff; read twice daily, about 5.30 a. m. and 5p.m.; datum unchanged.

Channel. Practically permanent.

Discharge measurements. Made by wading.

Accuracy. Gage heights at low stages may be affected by inflow from Spreckels 

ditch below the gage.

Discharge measurements of Alo Stream near Huelo, Maui, in 1912.

Date.

Sept. 22

Dec. 20

Hydrographer.

J. B. Stewart.................... .........................................

C.T. Bailey..............................................................

height.

Feet. 

1.40

1.90

Discharge.

Sec.-ft. 

0.97

6.97

Daily gage height, in feet, of Alo Stream near Huelo, Maui, for 1912.

[Tokunaga.]

Day.

1. ....... .......

2.. .............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.72

1.84

1.70

1.64

1.60

1.58

1.54

1.57

1.59

1.52

1.46

1.44

1.40

1.40

1.38

1.36

1.34

1.32

1.30

1.30

1.30

1.28

1.25

1.40

1.33

1.25

1.22

1.20

1.20

1.18

1.22

Feb.

1.20

1.18

1.17

1.17

1.13

1.10

1.10

1.39

1.80

1.34

1.34

1.30

2.19

1.78

1.47

1.39

1.32

1.87

2.01

2.29

2.20

1 98

1.90

1.94

1.82

2 9A

2.18

2.01

1 Oft

.......

Mar.

2.03

2.14

2.10

1.97

1.92

1.91

1.96

1.96

2.04

2.12

2.48

2.15

2.50

2.13

1.94

1.90

1.95

1 98

1.97

1.96

1.89

1.82

1.80

1.78

1.78

1.89

1.80

1.74

1.63

1.90

1.88

Apr.

2.00

1.88

2.10

3.00

2.48

2.04

2.10

2.56

2.15

2.19

1.98

2.10

2.02

2.11

2.06

2.06

2.00

1 93

1.91

2.09

1.92

1 Q9

1.89

1.90

1.96

1 99

1 96

1.90

1 84

1.80

May.

1.72

1.76

1.89

1.94

1.95

1.94

1.84

1.96

1.80

1.72

1.68

1.66

1.60

1.60

1.56

1.52

1.50

1.49

1.53

1.70

1.55 1 43

1.40

1.54

1.40

1.80

2.12

1.86

1 01

1.80

1.64

June.

1.56

1.52

1.50

1.44

1.40

1.40

1.40

1.62

1.52

1.94

1.86

1.76

1.82

1.73

1.79

1.78

1.72

1.67

1.59

1.76

1.70

1.84

1.72

1.63

1.96

1 79

1.65

1.75

1.66

1.54

July.

1.60

1.70

1.82

1.92

1.84

1.72

1.66

1.76

2.00

1.83

1.96

1.79

1.86

1.90

1.78

1.70

1.66

1.61

1.58

1.56

1.49

1.51

1.50

1.88

1.74

1.63

1.67

1.68

1 64

1.62

1.53

Aug.

1.50

1.48

1.49

1.45

1.41

1.40

1.41

1.40

1.78

1.74

1.91

1.84

1.80

1.86

2.14

1.85

1.74

1.65

1.74

1.60

1.58

1.90

1.68

1.56

1.51

1.57

1.60

1.51

1.80

1.69

1.74

Sept.

1.70

2.12

1.93

2.02

1.85

1.88

2.02

1.84

1.76

1.70

1.64

1.60

1.56

1.52

1.50

1.44

1.44

1.40

1.40

1.42

1.38

1.36

1.34

1.40

1.34

i vt

1.32

1.30

1.35

2.02

Oct.

1.60

1.72

1.64

1.44

1.40

1.36

1.39

1.38

1.44

1.42

1.36

1.68

1.62

2.22

2.11

1.68

1.28

1.52

1.48

1.54

2.36

2.11

2.02

1.94

1.86

1.85

3.00

2.34

1 98

2.03

1.98

Nov.

1.96

1.90

2.06

1.88

1.80

1.73

1.66

1.62

2.78

1.92

2.02

1.85

1.78

1.77

1.71

2.44

2.19

2.46

2.04

1.97

1.92

1 01

1.94

1.94

1.88

1.88

1.82

1.78

1.72

1.75

Dec.

1.82

2.26

1.75

1.62

1.61

1.64

1.54

1.40

1.34

1.29

1.64

1.60

1.48

1.60

1.58

1.70

1.66

2.30

2.16

1.82

2.29

2.22

2.21

1.93

1.90

2.04

1 09

1.96

1 09

1.90

1.86

Daily discharge, in second-feet, of Alo Stream near Huelo, Maui, for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

Jan.

3.2

4.8

3.0

2.4

2.0

1.9

1.7

1.8

2.0

1.6

Feb.

n a

q

.3

.3

.2

.2

1.0

4.0

.8

Mar.

10.2

15.4 is n

8.1

6.6

6.3

7.8

7.8

10.6

14.2

Apr.

9 n

5.6

13.0

81.0

37.6

10.6

13.0

43.8

16.0

18.4

May.

3 9

3.6

5.8

7.2

7.5

7.2

4.8

7.8

4.0

3.2

June.

1.8

1.6

1.5

1.2

1.0

1.0

1.0

2.2

1.6

7.2

July.

2 n

3.0

4 4

6.6

4.8

3.2

2.6

3.6

9

0

4.6

Aug.

1.5

1.4

1.4

1.2

1.1

1.0

1.1

1.0

3.8

3.4

Sept.

3 0

14.2

6

n

. 0 8

5.0

5.6

9

0

4.8

3.6

3.0

Oct.

9 n

3.2

2.4

1.2

1.0

.9

1.0

1 9

1.1

Nov.

7.8

6.0

11.4

5.6

4.0

3.3

2.6

2.2

61.4

6.6

Dec.

4.4

22.6

3.5

2.2

9 1

2.4

1.7

LO

.8

.7
ISLAND OF MAUL 169 

Daily discharge, in second-feet, of Alo Stream near Huelo, Maui, for 1912 Continued.

Day.

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.3

1.2

1.0

1.0

.9

.9

.8

.8

.7

.7

.7

.6

.6

1.0

.8

.6

.5

.4

.4

.4

.5

Feb.

0.8

.7

18.4

3.8

1.4

1.0

.8

5.4

9.4

24.4

19.0

8.4

6.0

7.2

4.4

21.4

17.8

9.4

7.8

Mar.

37.6

16.0

39.0

14.8

7.2

6.0

7.5

8.4

8.1

7.8

5.8

4.4

4.0

3.8

3.8

5.8

4.0

3.4

2.3

6.0

5.6

Apr.

8.4

13.0

9.8

13.6

11.4

11.4

9.0

6 Q

6.3

12.6

6.6

6.6

5.8

6.0

7.8

8.7

7.8

6.0

4.8

4.0

May.

2.8

2.6

2.0

2.0

1.8

1.6

1.5

1.4

1.6

3.0

1.8

1.2

1.0

1.7

1.0

4.0

14.2

5.2

6.3

4.0

2.4

June.

5.2

3.6

4.4 3.3-

3.9

3.8

3.2

2.7

2.0

3.6

3.0

4.8

3.2

2.3

7.8

3.2

2.5

3.5

2.6

1.7

July.

7.8

3.9

5.2

6.0

3.8

3.0

2.6

2.1

1.9

1.8

1.4

1.6

1.5

5.6

3.4

2.3

2.7

2.8

3.4

2.2

1.6

Aug.

6.3

4.8

4.0

5.2

15.4

5.0

3.4

2.5

3.4

2.0

1.9

6.0

2.8

1.8

1.6

1.8

2.0

1.6

4.0

2.9

3.4

Sept.

2.4

2.0

1.8

1.6

1.5

1.2

1.2

1.0

1.0

1.1

.9

.9

.8

1.0

.8

.8

.8

.7

.8

9.8

Oct.

0.9

2.8

2.2

20.2

13.6

2.8

.6

1.6

1.4

1.7

29.2

13.6

9.8

7.2

5.2

5.0

81.0

27.8

8.4

10.2

8.4

Nov.

9.8

5.0

3.8

3.7

3.1

34.8

18.4

36.2

10.6

8.1

6.6

6.3

7.2

7.2

5.6

5.6

44

3.8

3.2

3.5

Dec.

2.4

2.0

1.4

2.0

1.9

3.0

2.6

25.0

16.6

4.4

24.4

20.2

19.6

6.9

6.0

10.6

6.6

7.8

6.6

6.0

5.2

Monthly discharge of Alo Stream near Huelo, Maui, for 1912.

Month.

April..............................................

May...............................................

July...............................................

October...........................................

No vermber. .......................................

Discharge in second-feet.

Maximum.

4.8 

24.4 

39.0 

81.0 

14.2 

7.8 

9.0 

15.4 

14.2 

81.0 

61.4 

25.0

81.0

HflnfmrjTn ,

0.4 

.2 

2.3 

4.0 

1.0 

1.0 

1.4 

1.0 

.7 

.6 

2.2 

.7

.2

Mean.

1.30 

6.05 

9.72 

13.80 

3.79 

3.01 

3.56 

3.18 

3.26 

8.66 

9.93 

7.21

6.11

Run-off 

(total in 

acre-feet).

79.9 

348.0 

598.0 

821.0 

233.0 

179.0 

219.0 

196.0 

194.0 

532.0 

591.0 

443.0

4,430.0

Accuracy.

C. 

C. 

B. 

A. 

A. 

A. 

A. 

A. 

B. 

B. 

B. 

B.

WAIKAMOI STREAM NEAR HUELO, HAUL

Location. About 4£ miles by trail southeast of Huelo and about 500 feet above 

junction of stream and Spreckels ditch; about 50 feet above trail bridge.

Records available. December 16, 1910, to December 31, 1912.

Gage. Inclined staff; read twice daily, at 5.15 a. m. and about 5 p. m.; datum 

unchanged.

Channel. Practically permanent.

Discharge measurements. Made by wading.

Accuracy. Good.

Cooperation. East Maui Ditch Co. assists in obtaining gage heights.

Discharge measurements of Waikamoi Stream near Huelo, Maui, in 1912.

Date.

Sept. 22

Nov. 8

Hydrographer.

J. B . Stewart . ............................................................

.....do....................................................................

Gage 

height.

Feet. 

1.27

1.60

Discharge.

Sec.-feet. 

1.48

5.43
170 WATEB BESOURCES OF HAWAII, 1912.

Daily gage height, infect, of Waikamoi Stream near Huelo, Maui, for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15:..............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.62

1.62

1.60

1.56

1.52

1.50

1.48

1.52

1.54

1.49

1.46

1.44

1.42

1.40

1.38

1.36

1.34

1.32

1.31

1.30

1.28

1.28

1.24

1.40

1.47

1.26

1.22

1.19

1.16

1.12

1.11

Feb.

1.09

1.03

1.02

1.10

1.06

.99

.95

1.08

1.37

1.30

1.29

1.28

1.78

1.76

1.44

1.28

1.20

1.18

1.60

2.88

3.40

2.38

1.95

1.74

1.77

1.64

3.30

2.50

2.16

Mar.

2.16

2.46

2.46

2.11

1.99

1.96

2.22

2.04

2.00

2.22

2.82

2.56

2.46

2.10

1.93

1.78

1.82

2.14

1.88

1.89

1.78

1.70

1.66

1.66

1.68

2.26

1.81

1.68

1.62

2.80

2

Qfl

Apr.

2.36

2.04

2.18

3.08

3.16

2.26

2.64

2.92

2.39

2.24

2.00

2.57

1.95

2.18

2.06

2.06

1.93

1.86

2.21

1.94

1.83

1.79

1.78

1.85

1.89

1 QC

1.78

1.72

1.68

May.

1.64

1.72

1.82

1.66

1 84

i 7a

1.71

1.78

1.68

1.61

1.54

1.51

1.50

1.54

1.52

1.49

1.48

1.46

1.50

1.58

1.50

1.43

1.40

1.48

1.41

1.70

2.00

1.62

1.68

1.56

1 ^9

June.

1 48

1.47

1.46

1.42

1.40

1.36

1.36

1.52

1.46

1.84

1.74

1.67

1.74

1.64

1 64

1.74

1.60

1.52

1.64

1.56

1.58

1.57

1.54

1.74

1.63

1.53

1.66

1.58

1.51

1.48

July.

1.54

1.62

1.79

1.96

1.57

1.64

1.58

1.60

1.94

1.74

1.78

1.64

1.78

1.79

1.67

1.60

1.56

1.53

1.50

1.48

1.49

1.46

1.42

1.68

1.61

1.54

1.58

1.54

1.56

1.50

1.46

Aug.

1.41

1.38

1.40

1.37

1.32

1.28

1.32

1.29

1.60

1.54

1.80

1.73

1.59

1.81

2.28

1.74

1.60

1.53

1.56

1.51

1.48

1.72

1.58

1.50

1.46

1.46

1.46

1.43

1.65

1.55

1.54

Sept.

1.54

2.48

1.87

1.82

1.66

1.70

2.34

1.72

1 62

1.56

1.53

1.50

1.48

1.46

1.43

1.40

1.40

1.36

1.32

1.34

1.31

1.26

1.24

1.22

1.18

1.16

1.13

1.08

1.14

2.01

Oct.

1.50

1.75

1.68

1.50

1.42

1.37

1.38

1.36

1.37

1.44

1.36

1.52

1.58

2.42

1.75

1.66

1.53

1.49

1.47

1.50

2.24

2.41

2.16

1.92

1.74

1.76

2.84

2.18

1.91

2.03

1.99

Nov.

1.95

1.82

2.00

1.74

1.69

1.58

1.58

1.57

3.69

2.18

2.09

1 84

1.72

1.68

1.63

2.74

2.60

2.66

2.60

1.99

2.00

1.98

1.90

1.77

1.79

1.84

1.72

1.69

1.63

1.66

Dec.

2.14

2.28

3.22

1.89

1.82

1.80

1.76

1.76

1.74

1.71

1.62

1.62

1.60

1.62

1.60

1.66

1.61

1.66

1.88

1.74

2.48

2.08

2.23

1.88

1.84

2.14

2.00

1.86

1.79

1.78

1.74

Daily discharge, in second-feet, of Waikamoi Stream near Huelo, Maui, for 1912.

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29.......... ....

30...............

31...............

Jan.

6.4

6.4

6.0

5.2

4.4

4.0

3.8

4.4

4.8

3.9

3.6

3.4

3.2

3.0

2.8

2.6

2.4

2.2

2.1

2.0

1.8

1.8

1.4

3.0

3.7

1.6

1.2

1.0

.8

.6

.6

Feb.

0.5

.5

.5

.5

.5

.5

.5

.5

2.7

2.0

1.9

1.8

9.6

9.2

3.4

1.8

1.0

.9

6.0

48.0

74.0

27.4

14.5

8.8

9 4

6.8

69.0

32.0

20.8

Mar.

20.8

30.4

30.4

19.3

15.7

14.8

22.6

17.2

16.0

22.6

45 0

34.4

30.4

19.0

13.9

9.6

10.6

20.2

12.4

12.7

9.6

a o

7.2

7.2

7.6

23.8

10.3

7.6

6.4

44.0

47.0

Apr.

26.8

17.2

21.4

58.0

62.0

23.8

37.6

50.0

27.7

23.2

16-0

34.8

14.5

21.4

10 ft

17.8

17.8

13.9

11.8

22.3

14.2

10.9

9.8

9.6

11.5

19 7

11.8

9.6

8.4

7.6

May.

6.8

8.4

10.6

7.2

11.2

9.6

8.2

9.6

7.6

6.2

4.8

4.2

4.0

4.8

4.4

3.9

3.8

3.6

4.0

5.6

4.0

3.3

3.0

3.8

3.1

8 A

16.0

6.4

7.6

5.2

4.4

June.

3.8

3.7

3.6

3.2

3.0

2.6

2.6

4.4

3.6

11.2

8.8

7.4

8.8

6.8

6.8

8.8

6.0

4.4

6.8

5.2

5.6

5.4

4.8

8.8

6.6

4.6

7.2

5.6

4.2

3.8

July.

4.8

6.4

9.8

14.8

5.4

6.8

5.6

6.0

14.2

8.8

9.6

6.8

9.6

9.8

7.4

6.0

5.2

4.6

4.0

3.8

3.9

3.6

3.2

7.6

6.2

4.8

5.6

4.8

5.2

4.0

3.6

Aug.

3.1

2.8

3.0

2.7

2.2

1.8

2.2

1.9

6.0

4.8

10.0

8.6

5.8

10.3

24.4

8.8

6.0

4.6

5.2

4.2

3.8

a 4

5.6

4.0

3.6

3.6

3.6

3.3

7.0

5.0

4.8

Sept.

4.8

31.2

12.1

10.6

7.2

8.0

26.2

8.4

6.4

5.2

4.6

4.0

3.8

3.6

3.3

3.0

3.0

2.6

2.2

2.4

2.1

1.6

1.4

1.2

.9

.8

.6

.5

.7

16.3

Oct.

4.0

9.0

7.6

4.0

3.2

2.7

2.8

2.6

2.7

3.4

2.6

4.4

5.6

28.8

9.0

7.2

4.6

3.9

3.7

4.0

23.2

28 4

20.8

13.6

8.8

9.2

46.0

21.4

13.3

16.9

15.7

Nov.

14.5

10.6

16.0

8.8

7.8

5.6

5.6

5.4

88.5

21.4

18.7

11.2

8.4

7.6

6.6

41.6

36.0

38.4

36.0

15.7

16.0

15.4

13.0

9.4

9

0

11.2

8 4.

7.8

6.6

7.2

Dec.

20.2

24.4

65.0

12 7

10.6

10.0

9.2

9.2

8.8

8.2

6.4

6.4

6.0

6.4

6.0

7.2

6.2

7.2

12.4

8.8

31.2

18.4

22.9

12.4

11.2

20.2

16.0

11.8

9.8

9.6

8.8
ISLAND OP MAUL 

Monthly discharge of Waikamoi Stream near Huelo, Maui, for

171

Month.

March.............................................

April..............................................

May...............................................

July...............................................

The year ....................................

Discharge in second-feet.

Maximum.

6.4 

74.0 

47.0 

62.0 

16.0 

11.2 

14.8 

24.4 

31.2 

46.0 

88.5 

65.0

88.5

Mminnyrn,

0.6 

.5 

6.4 

7.6 

3.0 

2.6 

3.2 

1.S 

.5 

2.6 

5.4 

6.0

.5

Mean.

3.04 

12.20 

19.20 

21.40 

6.24 

5.60 

6.51 

5.52 

5.96 

10.70 

17.00 

13.70

10.60

Run-off 

(total in 

acre-feet).

187 

702 

1,180 

1.270 

384 

333 

400 

339 

355 

658 

1,010 

842

7,660

Accuracy.

B. 

C. 

B. 

B. 

A. 

A. 

A. 

B. 

B. 

B. 

B. 

A.

OOPUOLA STREAM NEAR HTTELO, MAUI.

Location. About 2 miles by trail southeast of Huelo, and about 400 feet above

Spreckels ditch crossing.

Records available. December 16,1910, to December 31, 1912. 

Gage. Vertical staff; read once daily, at no regular hour; datum unchanged. 

Channel. Shifting.

Discharge measurements. Made by wading. 

Accuracy. Fair.

The following discharge measurement was made by J. B. Stewart: 

September 22, 1912: Gage height, 0.88 foot; discharge, 0.46 second-foot.

Daily gage height, in feet, of Oopuola Stream near Huelo, Maui, for 1912. 

[John Pachero, observer.]

Day.

1..... ..........

3............... 

4...............

5...............

6...............

7...............

10...............

11...............

19

13...............

14...............

15...............

16...............

17...............

18...............

10

20.... ...........

91

22...............

23...............

24...............

25.....,.....-..-

26...............

27...............

OQ

29...............

30............... 01

Tan.

1.22 

1.20

1.20 

1.22

1.21

1.12

1.11

1.10

1.07

1.04

1.02

1.01

1.00

1.00

1.00

1.00

.99

1.13

1.12

1.00

1.00

.95

.94

1.12

Feb.

1.00

1.00

.95

.90 

.89

.89 

.88

1.20

1.02

1.20

1.20

2.30

2.25

1.13

1.12

1.11

1.40

3.30

2.40

2.09

1.70

1.30

1.30

3.00

1.90

1.68

Mar.

1.55

2.20 "i.'so"

1.49 

1.43

1.50 

1.40

1.45

2.00

1.90

1.88

1.70

1.42

1.38

2.10

1.50

1.45

1.42

1.38

L22

1.30

1.34

1.10

1.09

1.52

Apr.

1.50

1.62

1.70 

2.70

1.50 

1.42

"i."72"

1.48

1.47

1.46

1.70

1.54

2.00

1.98

1.40

1.50

i.32

1.30

1.29

1.50

1.62

1.50

1.32

May.

1.12

1.14

1.11 

1.62

1.36

1.28

1.15

1.10

1.02

1.00

1.00

.92

.92

.91

1.13

1.10

.90

.90

1.15

1.00

1.42

1.62

1.51

1.22

1.20

June.

1.10

1.08 

1.02

1.01 

1.00

1.02 

1.20

2.20

1.80

1.72

1.32

1.30

1.28

1.22

1.10

1.08

1.08

1.20

1.09

1.32

1.22

1.10

1.08

1.10

1.01

July.

1.09

1.15

1.14

"i.'ojj"

2.05

1.16

1.14

1.12

1.12

1.11

1.10

1.09

1.08

1.04

1.02

1.03

1.02

1.31

1.30

1.03

1.02

1.12

1.10

.99

Aug.

0.98

.97

1.00

.97 

.92

.98 

.92

1.40

1.35

1.30

1.40

1.32

1.48

1.35

1.26

1.20

1.02

1.00

1.20

1.14

1.08

.97

.98

Q7

1.02

1.00

1.02

Sept.

1.70

1.25 

1.80

1.25 

1.12

1.52

1.02

1.01

1.00

.99

.95

.94

.94

.91

.90

.90

.90

.90

.82

.82

.80

.82

.79

70

1.40

Oct.

1.35

1.82

1.40 

.92

.91

.90 

.93

1.00

1.00

.91

1.20

1.50

1.52

1.00

1.00

1.00

.99

1.50

2.80

2.20

1.50

1.45

1.20

2.10

1.45

1.60

i >>n

Nov

1.45

1.30

"1.2,1

1.30

1.10 

1.08

2.51

1.50

1.40

1.20

1.17

1.07

2.60

2.10

1.12

1.10

L20

1.30

1.00

.30

1.85

1.20

1.80

1.70

1.10

i

Dec.

3.10

2.40 

1.80

1.60 

1.50

1.55

1.30

1.28

1.20

1.18

1.10

1.11

1.40

1.30

1.45

2.00

1.52

2.10

i.72

1.61

1.11

1.09 9 ni

1.23

1.20
172 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, of Oopuola Stream near.Huelo, Maui,for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7. ..............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan-.

2.0

2.0

2.0

1 ft

1 ft

2.0

9 n

1 9

1 0

1.3

1.3

1.2

1.1

1.1

1.0

1.0

9

.9

1.4

1.3

.9

.8

.8

1.3

Feb.

0.9

.9

.8

.7

.7

.7

.7

1.8

1.0

1.8

1.8

21.0

19.5

1.4

i i

1.3

2.4

62.0

24 0

IK a

8.0

9 ft

2.6

9 ft

46.0

12.0

7.7

Mar.

5.6

18.0

11.4

4.8

4.7

4.0

4.8

3.6

4.2

9 1

14.0

12.0

11.6

8.0

3

0

3 A

g 7

16.0

4

Q

A *>

3

Q

3 A

2.0

2

0

2 a

3

n

2 1

1.2

1 9

5.1

4.9

Apr.

4.8

6.7

8

n

34.0

4.8

3.8

6.1

8 A

4.6

4.4

4

0

8.0

5.4

9 7

14.0

13.6

in ^

7.0

3

Q

2.8

2.6

2

K

4.8

6.7

4.8

3

Q

2

0

*> n

May.

1.3

1.4

i Q

6.7

A. 0

1 9

9 A.

2 1

1.8

1.5

1 9

1.1

1.0

9

.7

.7

.7

1.0

1.4

1 9

.7

.7

1.5

g

2.4

3

Q

6.7

5.0

2.0

1.8

June.

1.2

1.2

1.1

1.0

9

1.0

1.8-

9.9

18.0

10.0

8.4

2.8

2.6

2.4

2

0

2.0

1 9

1.1

1.1

1.8

1.2

2.0

2.8

2.0

1.2

1.1

1.2

.9

1.0

July.

1.2

1.5

1.4

1.4

i Q

1.2

1.1

1.0

15.0

1.6

1.4

1.3

1.3

1.3

1 Q

1.2

1.2

1.1

1.0

1.0

1.0

1:0

1.0

2.7

2.6

1.0

1.0

1.1

1.3

1.2

.9

Aug.

0.9

.8

.9

.8

.7

.8

.7

3.6

3.1

2.8

2.6

3.6

2.8

4.6

3.1

2.3

2.0

1.8

1.0

.9

1.8

1.4

1.1

1.0

.8

.8

.8

1.0

.9

1.0

Sept.

4.5

8.0

2.2

10-0

9 9

1.3

5.1

3.0

1.0

.9

.9

.9

.8

.8

.8

.7

.7

.7

.7

.7

.7

.6

.6

.6

.6

.6

.6

3.6

3.4

Oct.

3.1

10.4

3.6

.7

.7

.7

.7

.8

.9

.9

.7

1.8

3.3

4.8

5.1

.9

.9

.9

.9

2.9

4.8

38.0

18.0

4.8

4.2

1.8

8.9

16.0

4.2

6.4

4.8

Nov.

4.2

2.6

2.6

2.7

2.6

2.6

1.2

1.1

27.3

16.1

4.8

3.6

1.8

1.6

1.1

30.0

23.0

16.0

1.3

1 9

1.8

2.6

.9

.5

.1

11.0

1.8

10.0

8.0

1.2

Dec.

26.1

51.0

24.0

10.0

6.4

4.8

5.6

4.1

2.6

2.4

1.8

1.7

1.2

1.3

3.6

3.1

2.6

4.2

14.0

5.1

16.0

12.2

8.4

6.6

4.0

1.3

1.2

14.2

8.1

2.0

1.8

Monthly discharge ofOopuola Stream near Huelo, Maui,for 1912.

Month.

January

March. ............................................

April..............................................

May...............................................

July...............................................

Discharge in second-feet.

Maximum.

2.0 

62.0 

18.0 

34.0 

6.7 

18.0 

15.0 

4.6 

10.0 

38.0 

30.0 

51.0

62.0

Minimum.

0.8 

.7 

1.2 

2.0 

.7 

.9 

.9 

.7 

.6 

.7 

.1 

1.2

.1

Mean.

1.29 

8.50 

6.11 

6.76 

2.03 

2.87 

1.73 

1.65 

1.93 

5.05 

6.18 

8.11

4.32

Run-off 

(total in 

acre-feet).

79.3 

489.0 

376.0 

402.0 

125.0 

171.0 

106.0 

101.0 

115.0 

311.0 

368.0 

499-0

3,140.0

Accuracy.

C. 

C. 

C.

c. 

c. 

c. 

c. 

c. 

c. 

c. 

c. 

c.

SPRECKELS DITCH AT STATION NO. 1, NEAR HUELO, HAITI.

Location. About 8J miles by trail southeast of Huelo, and about 20 feet above

bridge which crosses ditch in Ulawina Gulch. 

Kecords available. December 18, 1910, to December 31, 1912. 

Gage. Vertical staff; read twice daily, about 5.30 a. m. and 4.30 p. m.; datum

unchanged.

Channel. Permanent.

Discharge measurements. Made by wading and from log near gage. 

Accuracy. Records good.
ISLAND OF MATJI. 173 

Discharge measurements of Spreckels ditch at station No. 1, near Huelo, Maui, in 1912.

Date.

Sept. 23

Nov. 10

Hydrographer.

3. B. Stewart.............................................................

.....do....................................................................

Gage 

height.

Feet. 

0.20

1.60

Discharge.

Sec.-ft.

2.78

36.8

Daily gage height, in feet, of Spreckels ditch at station No. 1, near Huelo, Maui, for 1912.

Day.

1........ .......

2...............

3...............

4...............

5............... 

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.50

.56

.50

.44

.39 

.35

.34

.39

.41

.32

.28

.26

.22

.20

.18

.17

.16

.14

.19

.13

.11

.10

.10

.25

.22

.14

.10

.09

.08

.06

.10

Feb.

0.08

.05

.06

.06

.04 

.02

.02

.12

.65

.19

.16

.12

1.32

.59

.27

.18

.16

.14

1.32

1.75

1.86

1.82

1.22

.84

.90

1.28

1.76

1.70

1.52

Mar.

1.55

1.68

1.68

1.55

1.48 

1.38

1.60

1.35

1.52

1.50

1.72

1.92

1.72

1.22

1.22

SQ

.88

1.52

1.28

1.12

1.02

.70

.82

.73

.70

1.42

.78

fiQ

.54

1 69

1.70

Apr.

1.58

1.40

1.65

2.08

1.72 

1.10

1.72

1.48

1.32

1.59

1.38'

1.58

1.25

1.52

1.35

1.64

1.55

1.18

.96

1.38

1.19

1.18

.89

.85

1.40

1.32

1.32

90

.76

.76

May.

0.62

.62

1.25

1.58

1.18 

1.09

.78

1 39

.75

.62

.56

.50

.46

.46

dn

dn

.36

.36

30

.55

43

.32

.29

.36

.28

1.00

1.31

.70

.66

.46

44

June.

0.38

.39

33

.28

.26 

.25

.29

AQ

.46

1.04

1.04

.66

.86

.62

.74

.75

54

.46

.74

79

.92

.58

.49

84

.54

.46

.82

.54

.42

so

July.

a 47

.69

09

.95

.79 

.61

.54

1 04

1.36

.80

.89

.65

QO

1.05

.65

.52

.48

.49

.41

49

.42

.39

.35

.84

.67

.51

.50

so

.67

.46

.39

Aug.

0.38

.36

.36

.33

.29 

.28

.29

.26

.71

.64

1.12

.86

.80

1.07

.88

.80

.59

.66

.68

4Q

.44

.68

.59

44

.39

.49

.46

so

.74

.55

.61

Sept.

0.51

1.75

.80

1.36

.74

.88

1.54

.75

.62

.56

40

.42

.39

.36

.34

30

.31

.28

.25

.26

.23

.20

.20

.33

.20

.20

.16

.13

.20

1.20

Oct.

0.46

.99

.58

.40

.34 

.33

.34

.34

.49

.44

.46

.66

SQ

1.52

1.20

.55

.42

.40dn

.48

1.80

1.75

1.62

1.34

.78

.96

1.95

1.64

1.00

1.42

1.38

Nov.

1.22

.84

1.34

.66

.69 

.52

.48

.45

1.98

1.22

1.60

.84

.69

.58

.52

1.92

1.70

1.88

1.50

1.36

1.24

.94

.58

1.32

1.60

.90

.64

.65

.61

.65

Dec.

1.30

2.04

1.46

1.45

.79

1.25

.84

.75

.64

.56

.52

.46

.53

.5

.54

.48

1.30

1.68

1.02

1.66

1.85

1.38

1.36

1.04

1.25

1.32

1.22

1.35

.75

.70

Daily discharge, in second-feet, of Spreckels ditch at station No. 1, near Huelo, Maui,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...........:...

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

8.0

9.2

8.0

6.9

6.0

5.3

5.1

6.0

6.4

4. 8

4.1

3.7

3.0

2.7

2.4

2.2

2

1

1.8

2.6

1.6

Feb.

1.0

.6

.7

.7

.5

.2

.2

1.5

11.0

2.6

2 1

1.5

27.0

9.8

3.9

2.4

2

1

1.8

27.0

39.5

Mar.

00 K

17 d.

37.4

33.5

31.4

28.5

qc n

27.8

32.6

32.0

38.6

44.6

38.6

24.5

24.5

16.2

16.0

00 «

26.0

22.0

Apr.

34.4

29.0

36.5

49.4

38.6

21.5

38.6

31.4

97 n

*>A 7

28.5

VA A

25.2

32.6

27.8

36.2

00 K

23.5

18.0

27.0

May.

10.4

10.4

OR 9

34.4

OO K

21.2

13.6

27.0

10 rt

10.4

9

0

8.0

7 ^

7.3

6.2

6.2

5.5

5.5

6.0

9.0

June.

5.8

6.0

A 0

4.1

3 7

4

O

7.8

7 1

20.0

20.0

n

o

15.5

10.4

12.8

13.0

8.8

7.3

12.8

12.4

July.

7.5

11.8

17.0

17.8

10 Q

10.2

8.8

20.0

OK C

16.2

11.0

17.0

20.2

11.0

8.4

7.6

7.8

6.4

6.6

Aug.

5.8

5.5

5.5

4.9

4.2

4.1

4.2

3.7

12.2

10.8

22.0

15.5

14.0

20.8

16.0

14.0

9 8

11.2

11.6

7.8

Sept.

8.2

39.5

14.0

28.0

12.8

16.0

33.2

13.0

10.4

9.2

7.8

6.6

6.0

5.5

5.1

4.4

4.6

4.1

3.6

3.7

Oct.

7.3

18.8

9.6

6.2

5.1

4.9

5.1

5.1

7.8

6.9

7.3

11.2

16.2

32.6

24.0

9.0

6.6

6.2

6.2

7.6

Nov.

24.5

15.0

27.5

11.2

11.8

8.4

7.6

-7.1

46.4

24.5

35.0

15.0

11.8

9.6

8.4

44.6

38.0

43.4

32.0

28.0

Dec.

26.5

48.2

30.8

30.5

22.1

13.8

25 2

15.0

13.0

10.8

9.2

8.4

7.3

9.6

8.6

8.8

7.6

26.5

37.4

19.5
174

Daily dii

WATER RESOURCES OP HAWAII, 1912.

in second-feet, of Spreckels ditch at station No. 1, near Huelo, Maui, 

for 1912 Continued.

Day.

21...............

22...............

23...............

24...............

25

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.4

1.2

1.2

3.6

3.0

1.8

1.2

1.1

1.0

.7

1.2

Feb.

42.8

41.6

24.5

15.0

16.5

26.0

39.8

38.0

32.6

Mar.

19.5

12.0

14.5

12.6

19 n

29.6

13.6

11.8

8.8

37.7

38.0

Apr.

23.8

23.5

16.2

15.2

29.0

27.0

97 n

16.5

13.2

13.2

May.

6.7

4.8

4.2

5.5

4.1

19.0

26.8

12.0

11.2

7.3

6.9

June.

17.0

9.6

7.8

15.0

8.8

7.3

14.5

8.8

6.6

9.8

July.

6.6

6.0

5.3

15.0

11.4

8.2

8.0

9.8

11.4

7.3

6.0

Aug.

6.9

11.6

9.8

6.9

6.0

7.8

7.3

6.0

12.8

9.0

10.2

Sept.

3.2

2.7

2.7

4.9

2.7

2.7 2.1'

1.6

2.7

24.0

Oct.

41.0

39.5

35.6

27.5

13.6

18.0

45.5

36.2

19.0

29.6

28.5

Nov.

25.0

17.5

9.6

27.0

35.0

16.5

10.8

11.0

10.2

11.0

Dec.

36.8

42.5

28.5

28.0

20.0

25.2

 97 n

24.5

27.8

13.0

12.0

Monthly discharge of Spreckels ditch at station No. 1, near Huelo, Maui, for 1912.

Month.

April..............................................

July...............................................

The year. ...................................

Discharge in second-feet.

Maximum.

9.2 

42.8 

44.6 

49.4 

34.4 

20,0 

25.5 

22.0 

39.5 

45.5 

46.4 

48.2

49.4

Minimum.

0.7 

.2 

8.8 

13.2 

4.1 

3.6 

5.3 

3.7 

1.6 

4.9 

7.1 

7.3

.2

Mean.

3.53 

14.20 

26.50 

27.70 

11.90 

9.89 

11.40 

9.61 

9.50 

17.30 

20.80 

21.40

15.30

Run-on' 

(total in 

acre-feet).

217 

817 

1,630 

1,650 

732 

588 

701 

591 

565 

1,060 

1.240 

1,320

11,100

Accuracy.

C. 

C. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

SPRECKELS DITCH AT STATION NO. 2, NEAR HTTELO, MAUI.

Location. About 7J miles by trdil southeast of Huelo post office and 100 feet above

junction of ditch with Kolea Stream No. 2. 

Records available. November 6, 1911, to December 31, 1912. 

Gage. Vertical staff; read once daily, about 4.30 p. m.; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made from log across ditch near gage. 

Accuracy. Records good. 

Cooperation. Station maintained in cooperation with East Maui Ditch Co.

Discharge measurements of Spreckels ditch at station No. 2, near Huelo, Maui, in 1912.

Date.

Nov. 10

Hydrographer.

.....do....................................................................

Gage 

height.

Feet. 

0.69

1.85

Discharge.

Secrf. 

3.04

36.5
ISLAND OF MAUI. 175 

Daily gage height, in feet, of Spreckels ditch at station No. 2, near Huelo, Maui,for 1912.

Day.

1...... .........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14............... 

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.00

1.28

.98

.93

.90

.85

.83

.85

.90

.83

.78

.75

.73

.71 

.71

.70

.69

.68

.65

.63

.62

.60

.60

.89

.70

.62

.60

.59

.58

.57

.65

Feb.

0.59

. .57

.58

.55

<vl

.53

.52

.53

.90

.67

.70

.62

1.25

.97 

.75

.68

.70

.63

1.52

1.93

1.99

1.81

1.73

1.31

1.35

"> on

1.90

1.88

1.92

.......

Mar.

1.90

1.93

1.92

1.88

1.89

1.80

1.93

1.75

1.90

1.92

1.98

1.93

1.88

1.90 

1.65

1.40

1.70

1.88

1.93

1.65

1.40

1.22

1.38

1.20

1.28

1 7°.

1.28

1.19

1.05

1.93

1.90

Apr.

1.88

1.93

1.98

2.18

1.83

1.78

1.93

2.10

1.80

1.90

1.93

1.90

1.78

1.90 

1.80

1.93

1.93

1.70

1.53

1.93

1.68

1.88

1.50

1.30

1.90

1.93

1.78

1.43

1.29

1.28

May.

1.13

1.15

1.90

1.92

t 7°.

1.53

1.33

1.60

1.25

1.13

1.08

1.02

.98

.95 

.90

.90

.88

.88

.88

.99

.89

.80

.78

.88

.75

1.90

1 $0

1.08

.95

.90

June.

0.83

.83

.79 .'78

.71

.70

.79

ctt

1.09

1.95

1.73

1.18

1.30

1.08 

1.15

1.22

QQ

on

1.20

1.63

1.70

1.03

.99

1.29

1 03

.93

1.05

.95

.88

.81

July.

0.80

1.50

1.62

1.73

1 40

1 10

1.00

1.90

1.68

1.22

1.39

1.30

1.29

1.53 

1.10

1.00

Q°.

.93

, .88

.90

.85

.81

.79

1.10

1.13

1.00

1.18

1.03

1.28

.91

.85

Aug.

0.82

.80

.83

.78

.73

.70

.72

.70

1.13

1.13

1.40

1.19

1.33

1.90 

1.63

1.23

1.05

1.23

1.05

.95

.90

1.63

1.00

.90

.85

1.03

1.00

.85

1.08

1.05

1.00

Sept.

1.00

1.93

1.70

1.65

1.20

1.50

1.80

1.23

1.10

1.03

.95

.90

.88

.82 

.80

.78

.78

.73

.71

.75

.70

.69

.69

.70

.68

.65

.63

.61

.71

1.35

Oct.

0.83

1.90

.90

.79

79

.70

.73

.70

.98

.83

.95

1.03

.98

1.80 

1.28

1.00

.90

.88

.81

.93

1.95

1.90

1.89

1.58

1.25

1.78

1.88

1.93

1.60

1.70

1.50

Nov.

1.58

1.30

1.60

1.20

1.10

1.03

.98

.91

1.93

1.88

1.75

1.30

1.15

1.05 

1.00

1.95

1.90

2.00

1.85

1.90

1.85

1.60

1.40

1.23

1.82

1.37

1.15

1.10

1.00

1.10

Dec.

1.60

1.20

1.65

1.60

1.43

1.30

1.48

1 30

1.20

1.10

1.00

.98

.90

1.13 

on

1.10

on

.98

1.95

1.30

1.93

1.93

1.95

1.70

1.75

i sa

1.63

1.88

1.38

1.30

1.40

Daily discharge, in second-feet, of Spreckels ditch at station No. 2, near Huelo, Maui,

for 1912.

Day.

1........;......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

8.0

13.6

7.6

6.6

6.0

4.6

4.6

5.0

6.0

4.6

3.8

3.5

3.3

1 1

3.1

t n

2.9

2.8

2.5

2.3

2.2

2.0

2.0

5.8

3 n

2.2

2.0

1.9

1.8

1.7

2.5

Feb.

1 O

1.7

1.8

1.5

1.4

1.3

1.3

6.0

2.7

3 A

2.2

13.0

7.4

3.5

2.8

3 A

2.3

20.6

36.5

39.5

°.1 A

28.2

14 S

11 1

40.0

OK A

34.2

36.0

Mar.

 35.0

36.5

36.0

34.2

34.6

31.0

36.5

29.0 °.<; n

36.0

39.0

36.5

34.2

35.0

25.0

17.0

27.0

34.2

36.5

25.0

17.0

12.4

16.4

12.0

13.6

28.2

13.6

11.8

o n

36.5,

35.0

Apr.

34.2

36.5

39.0

49.0

32.2

30.2

36.5

45.0

qi n

35.0

36.5

35.0

30.2

35.0

31.0

36.5

36.5

27.0

20.9

36.5

26.2

34.2

20.0

14.0

35.0

36.5

30.2

17.9

13.8

13.6

May.

10.6

11.0

35.0

36.0

28.2

20.9

14 Q

23.0

1O A

10.6

9 6

8.4

7.6

7.0

6.0

6.0

5.6

5.6

5.6

7.8

5.8

4.0

3.8

5.6

3.5

35.0

14.0

9 6

7.0

6.0

June.

4.6

4.6

3 Q

3

0

3

1

3.0

°. Q

6.6

Q S

37.5

28.2

11.6

14.0

9 a

11.0

12.4

7

Q

6.0

12.0

24.2

27.0

8.6

7.8

13.8

8.6

6.6

9 0

7.0

5.6

4.2

July.

4.0

20.0

23.8

28.2

17.0

10.6

8.0

35.0

26.2

12.4

16.7

14.0

13.8

20.9

10.0

8.0

6.6

6.6

5.6

6.0

5.0

4.2

°i Q

10.0

10.6

8.0

11.6

8.6

13.6

6.2

5.0

Aug.

4.4

4.0

4.6

3.8

3.3

3.0

3.2

3.0

10.6

10.6

17.0

11.8

14.9

35.0

24.2

12.6

9

n

12.6

9.0

7.0

6.0

24.2

8.0

6.0

5.0

8.6

8.0

5.0

Q fi

9.0

8.0

Sept.

8.0

36.5

27.0

25.0

12.0

20.0

31.0

12.6

10.0

8.6

7.0

6.0

5.6

4.4

4.0

3.8

3.8

3.3

3.1

3.5

3.0

2.9

2.9

3.0

2.8

2.5

2.3

2.1

3

1

15.5

Oct.

4.6

35.0

6.0

3.9

3.2

3.0

3.3

3.0

7.6

4.6

7.0

8.6

7.6

31.0

13.6

8.0

6.0

5.6

4.2

6.6

37.5

35.0

34.6

22.4

13.0

30.2

34.2

36.5

23.0

27.0

20.0

Nov.

22.4

14.0

23.0

12.0

10.0

8.6

7.6

6.2

36.5

34.2

29.0

14.0

11.0

Q n

8.0

37.5

35.0

40.0

33.0

35.0

33.0

23 0

17.0

12.6

31.8

16.1

11.0

10.0

8.0

10.0

Dec.

23.0

12.0

25.0

23.0

17 9

14.0

19.4

14.0

12.0

10.0

8.0

7.6

6.0

10.6

6.0

10.0

6.0

7.6

37.5

14.0

36.5

36.5

37.5

27.0

29.0

34.2

24.2

34.2

16.4

14.0

17.0
176 WATEE RESOURCES OF HAWAII, 1912.

Monthly discharge of Spreckels ditch at station No. 2, near Huelo, Maui, for 1912.

Month.

May...............................................

July...............................................

Discharge in second-feet.

MiyirimnTn .

13.6 

40.0 

39.0 

49.0 

36.0 

37.5 

35.0 

25.0 

36.5 

37.5 

40.0 

37.5

49.0

Minhnirm1.7 

1.2

9.0 

13.6 

3.5 

3.0 

3.9 

3.0 

2.1 

3.0 

6.2 

6.0

1.2

Mean.

4.00 

13.40 

27.70 

31.20 

12.60 

10.20 

12.30 

9.71 

9.18 

16.00 

20.00 

19.00

15.4

Run-off 

(total in 

acre-feet).

246.0 

771.0 

1,700.0 

1,860.0 

775.0 

607.0 

756.0 

597.0 

546.0 

984.0 

1,190.0 

1,170.0

11,200.0

Accuracy.

B. 

B. 

A. 

A. 

B. 

B. 

B. 

B. 

B. 

B. 

A. 

A.

SPRECKELS DITCH AT STATION NO. 3, NEAR HTTELO, HAUL

Location. About 6| miles by trail southeast of Huelo post office, and 400 feet above

junction of ditch with Haipuaena Stream.

Records available. December 18, 1910, to December 31, 1912. 

Gage. Vertical staff; read once daily, about 4.30 p. m.; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made from log near gage. 

Accuracy. Record good. 

Cooperation. East Maui Ditch Co. assists in obtaining gage heights.

Discharge measurements of Spreckels ditch at station No. 3, near Huelo, Maui, in 1912.

Date.

Sept. 23

Nov. 10

Hydrographer.

J. B. Stewart. ............................................................

.....do...................................................................

Gage

Feet. 

0.87

2.25

Discharge.

Sec.-ft. 

5.22

34.0

Daily gage height, in feet, of Spreckels ditch at station No. 3, near Huelo, Maui, for

Day.

1.. .............

2. ..............

0

4

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

10

20...............

Jan.

1.30

1.75

1.33

1.28

1.20

1.15

1.13

1.17

1.20

1.10

1.05

1.05

1.00

.98

.97

.93

.91

.88

.85

.83

Feb.

0.72

.71

.72

.70

.69

.68

.66

.65

1.20

.87

.91

.81

1.65

1.29

1.00

.90

Of)

.81

1.98

2.25

Mar.

2.45

2.33

2.30

2.25

2.25

2.23

2.33

2.23

2.30

2.30

2.73

2.40

2.43

2.28

2.15

1.83

2.25

2.25

2.33

2.15

Apr.

2.23

2.30

2.45

3.15

2.35

2.25

2.40

3.00

2.28

2.35

2.35

2.33

2.25

2.28

2.25

2.35

2.33

2.23

2.05

2.53

May.

1.50

1.50

2.23

2.30

1.25

2.05

1.78

2.10

1.70

1.50

1.40

1.30

1.28

1.23

1.15

1.15

1.10

1.10

1.10

1.30

June.

1.13

1.13

1.08

1.03

.99

.95

1.03

1.25

1.43

2.35

2.23

1.53

1.78

1.43

1.49

1.63

1.30

1.20

1.60

2.20

July.

1.43

1.98

2.10

2.35

2.08

1.53

1.30

2.26

2.23

1.70

2.00

1.50

1.73

1.80

1.45

1.30

1.28

1.25

1.18

1.20

Aug.

1.10

1.05

1.10

1.05

.98

.93

.95

.90

1.50

1.50

1.80

1.55

1.75

2.35

2.13

1.73

1.40

1.40

1.40

1.25

Sept.

1.33

2.30

2.28

2.20

1.68

1.98

2.20

1.65

1.50

1.35

1.28

1.20

1.13

1.10

1.08

1.00

1.00

.98

.95

1.00

Oct.

1.28

2.25

1.20

1.03

.98

.90

.95

.93

1.38

1.04

1.05

1.30

1.23

2.20

1.70

1.33

1.20

1.13

1.10

1.26

Nov.

2.18

1.75

2.13

1.60

1.48

1.38

1.30

1.23

2.65

2.23

2.20

1.75

1.58

1.43

1.30

2.50

2.33

2.70

2.30

2.35

Dec.

1.20

2.30

2.20

2.25

1.93

1.70

1.95

1.78

1.6,8

1.50

1.38

1.30

1.25

1.50

1.98

1.48

1.23

1.35

2.43

1.80
ISLAND OF MAUI. 177

Daily gage height, in feet, of Spreckels ditch at station No. 3, near Huelo, Maui,for

1912 Continued.

Day.

21...............

22.. .............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

. Jan.

0.81

.80

.80

1.15

80

.80

.78

.76

.74

.71

.84

Feb.

2.43

2.30

2.20

1.75

1.80'

2.30

2.35

2.30

2.25

.......

Mar.

1.88

1.60

1.70

1.53

1.68

2 20

1.65

1.50

1.35

2.28

2.25

Apr.

2.23

2.30

2.00

1.88

2.30

2.33

2.25

1 Q1

1.73

1.55

May.

1.13

1.05

1.00

1.18 1 no

2.35

2.15

1.85

1.48

1.30

1.20

June.

2.23

1.38

1.33

1 80

1 dn

1.23

1.40

1 9Q

1.18

1.10

July.

1.18

1.13

1.03

1 50

1.50

1.30

1.60

1 33

1.73

1.20

1.13

Aug.

1.20

2.10

1

QA

1.20

1.18

1.35

1.30

1.10

1 Aft

1.38

1.30

Sept.

0.90

.89

ftQ

.90

.85

.83

80

78

QQ

1 80

.......

Oct.

2.45

2.25

2.30

2.20 1 on

2.28

2.43

2.30

2.10

2.20

2.00

Nov.

2.30

2.13

1 Q3

1.70

2.35

1.90

1.55

1.52

1.40

1.50

Dec.

2.40

2.35

2 An

2.20

2.23

2.30

2.15

2.35

1.90

1.80

1.70

Daily discharge, in second-feet, of Spreckels ditch at station No. 3, near Huelo, Maui,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

10...............

11............ ..

12..............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

14.0

. 23.0

14.6

13.6

12.0

11.0

10.6

11.4

12.0

10.0

9.0

9.0

8.0

7.6

7.4

6.6

6.2

5.6

5.1

4.7

4.4

4.2

4.2

11.0

5.8

4.2

3.9

3.6

3.3

2.8

4 Q

Feb.

3.0

2.8

3.0

2.7

2.6

2.5

2.2

2.1

12.0

5.5

6.2

4.4

21.0

13.8

8.0

6.0

6.0

4.4

27.6

33.0

36.6

34.0

32.0

23.0

fjl ft

34.0

35.0

34.0

33.0

Mar.

37.0

34.6

34.0

33.0

33.0

32.6

34.6

32.6

34.0

34.0

42.6

36.0

36.6

33.6 11 n

24.6

33.0

33.0

34.6

31.0

25.6

20.0

22.0

18.6

21.6

32.0

21.0

18.0

15.0

33.6

33.0

Apr.

32.6

34.0

37.0

51.0

35.0

33.0

36.0

48.0

33.6

35.0

35:0

34.6

33.0

33.6

33.0

35.0

34.6

32.6

on A

38.6

32.6

34.0

28.0

oe e

QA A

34.6

33.0

26.6

22.6

19.0

May.

18.0

18.0

32.6

34.0

13.0

29.0

23.6

30.0

22.0

18.0

16.0

14.0

13.6

12.6

11.0

11.0

10.0

10.0

10.0

14.0

10.6

9 A

8.0

11.6

8.0

35.0 11 n

25.0

17.6

14.0

12.0

June.

10.6

10.6

9.6

8.6

7.8

7.0

8.6

13.0

16.6

35.0

32.6

18.6

23.6

16.6

17.8

20.6

14.0

12.0

20.0

32.0

32.6

15.6

14.6

24.0

16.0

12.6

16.0

13.8

11.6

10.0

July.

16.6

27.6

30.0

35.0

29.6

18.6

14.0

33.0

32.6

22.0

28.0

18.0

22.6

24.0

17.0

14.0

13.6

13.0

11.6

12.0

11.6

10.6

8.6

18.0

18.0

14.0

20.0

14.6

22.6

12.0

10.6

Aug.

10.0

9.0

10.0

9.0

7.6

6.6

7.0

6.0

18.0

18.0

24.0

19.0

23.0

35.0

30.6

22.6

16.0

16.0

1ft A

13.0

12.0

30.0

14.0

19 A

11.6

15.0

14.0

10.0

16.0

15.6

14.0

Sept.

14.6

34.0

33.6

32.0

21.6

27.6

32.0

21.0

18.0

15.0

13.6

12.0

10.6

10.0 Q 6

8.0

8.0

7.6

7.0

8.0

6.0

5.8

5.8

6.0

5.1

4.7

4.2

3.9

6.6

24.0

Oct.

13.6

33.0

12.0

8.6

7.6

6.0

7.0

6.6

15.6

8.8

9.0

14.0

12.6

32.0

22,0

14.6

12.0

10.6

10.0

13.0

37.0

33.0

34.0

32.0

26.0

33.6

36.6

34.0

30.0

32.0

28.0

Nov.

31.6

23.0

30.6

26.0

17.6

15.6

14.0

12.6

41.0

32.6

32.0

23.0

19.6

16.6

14.0

38.0

34.6

42.0

34.0

35.0

34.0

30.6

26.6

22.0

35.0

26.0

19.0

18.4

16.0

18.0

Dec.

12.0

34.0

32.0

33.0

26.6

22.0

27.0

23.6

21.6

18.0

15.6

14.0

13.0

18.0

27.6

17.6

12.6

15.0

36.6

24.0

36.0

35.0

36.0

32.0

32.6

34.0

31.0

35.0

26.0

24.0

22.0

Monthly discharge of Spreckels ditch at station No. 3, near Huelo, Maui, for 1912.

Month.

January ...........

April..............................................

May...............................................

June...............................................

July...............................................

Discharge in second-feet.

Maximum.

23.0 

36.6 

42.6 

51.0 

35.0 

35.0 

35.0 

35.0 

34.0 

37.0 

42.0 

36.6

51.0

MinimnTn.

2.8 

2.1 

15.0 

19.0 

8.0 

7.0 

8.6 

6.0 

3.9 

6.0 

12.6 

12.0

2.1

Mean.

8.18 

15.70 

30.20 

33.50 

17.50 

16.70 

19.10 

15.50 

13.90 

20.20 

25.80 

25.40

20.10

Run-off 

(total in 

acre-feet).

503 

903 

1,860 

1,990 

1,080 

994 

1,170 

953 

827 

1,240 

1,540 

1,560

14,600

Accuracy.

B. 

B. 

A. 

A. 

A. 

A. 

A. 

A. 

B. 

A. 

A. 

A.

14694° WSP 336 14
178 WATER RESOURCES OF HAW AH, 1912.

SPRECKELS DITCH AT STATION NO. 4, NEAR HUELO, HAITI.

Location. About 6J miles by trail southeast of Huelo post office, and about 250 feet 

above junction with small tributary of Puohakamoa Stream.

Records available. December 18, 1910, to December 31,1912.

Gage. Vertical staff; read once daily, usually between 3 and 5 p. m.; datum 

unchanged.

Channel. Permanent.

Discharge measurements. Made from log at gage.

Accuracy. Records good.

Cooperation. East Maui Ditch Co. assists in obtaining gage heights.

Discharge measurements of Spreckels ditch at station No. 4, near Huelo, Maui, in

Date.

Sept. 23

Nov. 10

Hydrographer.

J. B. Stewart..... ........................................................

.....do....................................................................

height.

Feet, 

0.55

1.70

Discharge.

Sec.-feet. 

6.40

34.5

Daily gage height, in feet, of Spreckels ditch at station No. 4, near Huelo, Maui, for 1912,

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.03

1.28

1.08

1.00

.93

.85

.83

.88

.93

.80

.73

.70

.67

.65

.63

.59

.58

.55

.55

.52

.50

.49

.48

.93

.58

.50

.47

.45

.42

.40

.53

Feb.

0.43

.39

.40

.39

.38

.35

.33

.32

.98

.55

.61

.51

1.38

1.08

.73

.60

.60

.53

1.63

1.95

2.10

1.78

1.72

1.45

1.50

1.80

2.00

1.88

1.80

Mar.

1.80

1.90

1.83

1.78

1.75

1.73

1.90

1.73

1.88

1.88

2.30

1.90

1.80

1.78

1.68

1.50

1.73

1.78

1.88

1.70

1.50

1.32

1.45

1 28

1.33

1.70

1.33

1.25

1.13

*) (V*

1.85

Apr.

1.80

1.83

1.90

2.15

1.65

1.75

2.05

2.03

1.85

1.80

1.70

1.80

1.70

1.73

1.70

1.83

1.78

1.70

1.60

1.90

1.70

1.75

1.58

1.50

1.75

1.80

1.70

1.53

1.40

I

qn

May.

1.23

1.23

1.63

1.73

1.70

1.60

1.45

1.63

1.33

1.20

1.10

1.03

1.00

.93

.88

.85

.80

.80

.80

1.00

.83

.70

.65

.89

.68

1.80

1.68

1 V\

1.20 1 03

.93

June.

0.85

.85

.78

.68

.65

.62

.68

.95

1.13

1.90

1.78

1.30

1.45

1.15

1.23

1.30

1.03

.93

1.30

1 60

1.73

1.10

1.08

1.48 1 11

1.00 1 11

1 03

.90

on

July.

1.15

1.58

1.70

1.75

1.60

1.25

1.08

1.83

1.73

1.35

1.53

1.20

1.43

1.48

1.20

1.10

1.00

.98

on

.90

.88

.82

.75 1 23 i <n

1.03

1 <W

1.05

1.38Q>;

.83

Aug.

0.75

.70

.80

.68

.63

.60

.60

.58

1.23

1.23

1.50

1.30

1.45

1.88

1.70

1.38

1.13

1.10

1.13

.98

.90

1.65

1.08

.90

.85

1.03

1.08

.80

1.15

1.10

1.05

Sept.

1.05

1.90

1.75

1.73

1.33

1.58

1.75

1.33

1.20

1.08

1.00

.93

.88

.80

.75

.70

.70

.65

.63

.65

.60

.58

.53

.60

.52

.50

4Q

.45

.58

1.50

Oct.

1.05

1.90

1.40

.78

.70

.60

.65

.63

.93

.80

.70

1.05

1.03

1.73

1.40

1.10

.95

.85

.80

1.00

1.88

1.83

1.80

1.70

1.40

1.75

1.98

1.80

1.53

1.75

1.83

Nov.

1.50

1.43

1.63

1.30

1.18

1.10

1.03

.98

2.10

1.70

1.70

1.40

1.30

1.23

1.08

1.90

1.83

2.10

1.70

1.85

1.70

1.68

1.50

1.35

1.67

1.47

1 25

1.20

1.10

1.17

Dec.

1.60

1.45

1.55

1.58

1.50

1.30

1.55

1.38

1.30

1.20

1.08

1.05

.98

1.20

.98

1.23

.95

1.03

1.93

1.43

1.83

1.80

1.90

1.55

1.53

1.83

1.55

1.63

1.43

1.40

1.33
ISLAND OF MAUI. 179

Daily discharge, in second-feet, of Spreckels ditch at station No. 4, near Huelo, Maui,

for 1912.

Day.

1..... ..........

2...............

3...... .........

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28................

29...............

30...............

31...............

Jan.

16.2

22.5

17.5

15.5

13.8

12.0

11.6

12.6

13.8

11.0

9.6

9.0

8.4

8.0

7.6

6.8

6.6

6.0

6.0

5.4

5.0

4.8

4.7

13.8

6.6

5.0

4.6

4.2

3.8

3.5

5.6

Feb.

4.0

3.4

3.5

3.4

3.2

2.8

2.4

2.3

15.0

6.0

7.2

5.2

25.0

17.5

9.6

7.0

7.0

5.6

31.9

41.5

46.0

36.4

34.6

26.8

28.0

37.0

43.0

39.4

37.0

Mar.

37.0

40.0

37.9

36.4

35.5

34.9

40.0

34.9

39.4

39.4

52.0

40.0

37.0

36.4

33.4

28.0

34.9

36.4

39.4

34.0

28.0

23.5

26.8

22.5

23.8

34.0

23.8

21.8

18.8

43.9

Apr.

37.0

37.9

40.0

47.5

32.5

35.5

44.5

43.9

38.5

37.0

34.0

37.0

34.0

34.9

34.0

37.9

36.4

34.0

31.0

40.0

34.0

35.5

30.4

28.0

35.5

37.0

34.0

28.9

25.5

23.0

May.

21.2

21.2

31.9

34.9

34.0

31.0

26.8

31.9

23.8

20.5

18.0

16.2

15.5

13.8

12.6

12.0

11.0

11.0

11.0

15.5

11.6

9.0

8.0

12.8

8.6

37.0

33.4

28.0

20.5

16.2

13.8

June.

12.0

12.0

10.6

8.6

8.0

7.4

8.6

14.2

18.8

40.0

36.4

23.0

26.8

19.2

21.2

23.0

16.2

13.8

23.0

31.0

34.9

18.0

17.5

27.5

18.8

15.5

18.8

16.2

13.0

11.0

July.

19.2

30.4

34.0

35.5

31.0

21.8

17.5

37.9

34.9

24.2

28.9

20.5

26.2

27.5

20.5

18.0

15.5

15.0

13.0

13.0

12.6

11.4

10.0

21.2

21.2

16.2

21.2

16.8

25.0

14.2

11.6

Aug.

10.0

9.0

11.0

8.6

7.6

7iO

7.0

6.6

21.2

21.2

28.0

23.0

26.8

39.4

34.0

25.0

18.8

18.0

18.8"

15.0

13.0

32.5

17.5

13.0

12.0

16.2

17.5

11.0

19.2

18.0

16.8

Sept.

16.8

40.0

35.5

34.9

23.8

30.4

35.5

23.8

20.5

17.5

15.5

13.8

12.6

11.0

10.0

9.0

9.0

8.0

7.6

8.0

7.0

6.6

5.6

7.0

5.4

5.0

4.8

4.2

6.6

28.0

Oct.

16.8

40.0

25.5

10.6

9.0

7.0

8.0

7.6

13.8

11.0

9.0

16.8

16.2

34.9

25.5

18.0

14.2

12.0

11.0

15.5

39.4

37.9

37.0

34.0

25.5

35.5

42.4

37.0

28.9

35.5

VJ O

Nov.

28.0

26.2

31.9

23.0

20.0

18.0

16.2

15.0

46.0

34.0

34.0

25.5

23.0

21.2

17.5

40.0

37.9

46.0

34.0

38.5

34.0

33.4

28.0

24.2

33.1

27.2

21.8

20.5

18.0

19.8

Dec.

31.0

26.8

29.5

30.4

28.0

23.0

29.5

25.0

23.0

20.5

17.5

16.8

15.0

20.5

15.0

21.2

14.2

16.2

40.9

26.2

37.9

37.0

40.0

29.5

28.9

37.9

29.5

31.9

26.2

25.5

23.8

Monthly discharge of Spreckels ditch at station No. 4, near Huelo, Maui, for 1912.

Month.

March.

April..... .........................................

May...............................................

July...............................................

The year........ ............................

Discharge in second-feet.

Maximum.

22.5 

46.0 

52.0 

47.5 

37.0 

40.0 

35.5 

39.4 

40.0 

42.4 

46.0 

40.9

52.0

Minimum.

3.5 

2.3 

18.8 

23.0 

8.0 

7.4 

10.0 

6.6 

4.2 

7.0 

15.0 

14.2

2.3

Mean.

9.08 

18.30 

33.90 

35.30 

19.80 

18.80 

21.50 

17.50 

15.40 

23.00 

27.90 

26.40

22.20

Run-off 

(total in 

acre-feet).

558 

1,050 

2,080 

2,100 

1,220 

1,120 

1,320 

1,080 

916 

1,410 

1,660 

1,620

16,100

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

SPRECKELS PITCH AT STATION NO. 5, NEAR HUELO, MAtTI.

Location. About 5 miles by trail southeast of Huelo post office, and about 500 feet

above drop into Alo Stream.

Records available. November 6,1911, to December 31,1912. 

Gage. Vertical staff; read twice daily, about 6 a. m. and 6p.m.; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made from plank at gage. 

Accuracy. Very good. 

Cooperation. East Maui Ditch Co. assists in obtaining gage heights.
180 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements of Spreckels ditch at station No. 5, near Huelo, Maui, in

Date.

Sept. 22

Nov. 7

Dec. 20

Hydrographer.

J. B. Stewart.............................................................

.....do....................................................................

C.T. Bailey..............................................................

Gage, 

height.

Feet. 

0.67

1.35

2.16

Discharge.

Sec.-ft. 

11.9

26.3

49.1

Daily gage height, in feet, of Spreckels ditch at station No. 5, near Huelo, Maui, for 1912.

Day.

1. ..............

2...............

3...............

4... ............

5...............

6...............

7...............

10...............

11...............

19

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.54

1.74

1.44

1.27

1.15

1.11

1.07

1.19

1.23

1.03

.92

.86

.82

.78

.74

.71

.68

.66

.62

.60

.59

.58

.54

.94

.74

.57

.51

.48

.46

.44

.52

Feb.

0.48

.41

.45

.44

.40

.38

.36

1.18

1.76

.66

.62

.60

2.14

1.76

.90

.68

.64

.58

1.96

2.48

2.45

2.43

2.41

2.20

2.18

1.90

1.82

2.30

2.14

.......

Mar.

2.35

2.34

2.35

2.22

2.20

2.22

2.29

2'~28

2.35

2.40

2.50

2.49

2.52

2.38

2.24

2.18

2.19

2.38

2.28

2.22

2.24

1.96

1.92

1.86

1.83

2.28

1.94

1.80

1.54

2.22

2.33

Apr.

2.24

2.19

2.40

2.50

1.92

2.36

2.53

2.44

2.22

2

Q4.

2.28

2

00

2

90

2.40

2.42

2.38

2.29

2.26

2.26

2.46

2.28

2

OA

2.29

2.28

2.33

2.46

2.38

2.30

2.12

I

ns

May.

1.68

1.82

2.42

2.40

2.44

2.36

2.04

2.30

1.90

1.64

1.48

1

04

1.25

1.26

1.08

1.02

.97

.96

1.02

1.36

1.10

.84

.77

1.00

.80

1.73

2.36

1.97

1.96

1

04

1.26

June.

1.04

1.00

.82

.83

.74

.70

.76

1.18

1.10

1.90

2.24

1.76

2.06

1.54

1.90

1.90

1.38

1.18

1.72

1.68

2.06

1.48

1.25

2.18

1.47

1.24

1.62

1.40

1.08

Q4

July.

1.23

1.65

2.00

2.23

2.04

1.64

1.40

1.30

2.30

2.00

2.10

1.71

2.07

2.16

1.71

1.41

1.27

1.25

1.09

1.05

1.11

1.02

.87

1.88

1.59

1.27

1.3S

1.41

1.60

1.13

1.00

Aug.

0.90

.85

.86

.79

.71

.66

.71

.66

1.75

1\59

2.16

1 Q7

1 P.fl

1.97

2.30

2.01

1.53

1.51

1.60

1.23

1.10

2.10

1.46

1.11

.98

1.12

1.16

.98

1.80

1 49

1.57

Sept.

1.45

2.40

2.16

2.20

1.92

2.02

1.93

1.64

1.43

1.28

1.16

1.03

.99

.91

.85

.86

.78

.72

.74

.70

.66

.62

.71

.59

.59

.56

.50 .'62

2.15

Oct.

1.23

1.64

1.62

.88

.80

.72

n

.72

96

1.11

1 fu

1 Af(

2.36

2.15

1.46

1 IS

1.22

.56

1.13

2.4S

9 4fi

2.39

2.29

2.10

2.10

2.50

2.50

2.30

2 4fl

2.16

Nov.

2.30

2.18

2-34

1.96

1.72

1 >?4

1.37 i ^n

2 Qfi

2

04

2

Q4

1 98

1.66

1.46

2.42

2.40

2

AA

2.34

9 9Q

2.22

2

0C

1

of|

9 ftJ.

2.10

2.14

1 fi^?

1.72

1.44

1.55

Dec.

2.42

i ia

2.90

.76

.45

.44

1 97

1 99

1 IS

O9.

1.45

1.10

1

OO

1.44

1.38

1.65

1

9O

2 19

2.40

2

10

2.32

2 49

2 CO

2.23

2.26

2.35

2.31

2.30

2.16

2

1*>

1.91

Daily discharge, in second-feet, of Spreckels ditch at station No. 5, near Huelo, Maui,

for 1912.

Day.

1.. .............

2. ..............

3...............

4...............

5...............

6...............

7...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Jan.

31.0

36.0

28.5

24.2

21.2

20.2

19.4

22.2

23.2

18.6

16.4

15.2

14.4

13.6

12.8

Feb.

8.7

7.6

8.2

8.1

7.5

7.2

6.9

22.0

36.5

11.4

10.8

10.5

47.2

36.5

16.0

Mar.

53.5

53.2

53.5

49.6

49.0

49.6

51.7

53.5

55.0

58.0

17 1

58.6

M A

50.2

Apr.

50.2

48.7-

55.0

58.0

40.6

53. S

58.9

ec 9

4Q fi

53.2

51.4

54.4

51.4

55.0

55.6

May.

34.5

38.0

55.6

55.0

56.2

53.8

44 9

M A

40 0

33.5

29.5

26.0

23. S

94 fl

19.6

June.

18.8

18.0

14.4

14.6

12.8

12.0

13.2

09 ft

20.0

40.0

50.2

36.5

44.8

31.0

40.0

July.

23.2

33.8

43.0

49.9

44.2

33.5

27.5

25.0

52.0

43.0

46.0

35.2

45.1

47.8

35.2

Aug.

16.0

15.0

15.2

13.8

12,2

11.4

12.2

11.4

36.2

32.2

47. S

42.1

37.5

42.1

52.0

Sept.

28.8

55.0

47.8

49.0

40.6

43.6

38.8

an o

33.5

28.2

24.5

21.5

18.6

17.8

16.2

Oct.

23.2

33.5

33.0

15.6

14.0

12.4

12.6

19 4

17.2

17.2

20.2

31.0

28.8

53.8

47.5

Nov.

52.0

48.4

53.2

41.8

35.5

31.0

26.8

9K fl

79 o

53.2

47.8

42.4

34.0

29.0

Dec.

55.6

29.5

71.0

13.2

8.2

8 1

24.2

90 f|

22.0

16.4

28.8

20.0

24.5

28.5

27.0
ISLAND OP MAUI. 181

Daily discharge, .in second-feet, of Spreckels ditch at station No. 5, near Huelo, Maul,

for 1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

12.2

11.7

11.4

10.8

10.5

10.4

10.2

9.6

16.8

12.8

10.0

9.2

8.7

8 4

8 1

9 3

Feb.

11.7

11.1

10.2

41.8

57.4

56.5

55.9

55.3

49.0

48.4

40.0

38.0

52.0

47.2

Mar.

48.4

48.7

54.4

51.4

49.6

50.2

41.8

40.6

39.0

38.2

51.4

41.2

37.5

31.0

49.6

KO Q

Apr.

54.4

51.7

50.8

50.8

56.8

51.4

52.0

51.7

51.4

52.9

56.8

54.4

52.0

46.6

42.4

May.

18.4

17.4

17.2

18.4

26.5

20.0

14.8

IS. 4

18.0

14.0

35.8

53.8

42.1

41.8

26.0

24.0

June.

40.0

27.0

22.0

35.5

34.5

44.8

29.5

23.8

48.4

29.2

23.5

33.0

27.5

19.6

16.8

July.

27.8

24.2

23.8

19.8

19.0

20.2

18.4

15.4

39.5

32.2

24.2

27.0

27.8

32.5

20.8

18.0

Aug.

43.3

30.8

30.2

32.5

23.2

20.0

46.0

29.0

20.2

17.6

20.5

21.5

17.6

37.5

28.0

31.8

Sept.

15.0

15.2

13.6

12.4

12.8

12.0

11.4

10.8

12.2

10.4

10.4

9.9

9.0

10.8

47.5

Oct.

29.0

22.0

23.0

9.9

20.8

57.4

56.8

54.7

51.7

46.0

46.0

58.0

58.0

52.0

55.0

47.8

Nov.

55.6

55.0

56.2

53.2

51.7

49.6

50.5

37.5

44.2

46.0

47.2

38.2

35.5

28.5

31.2

Dec.

33.8

24.5

46.6

55.0

48.4

52.6

55.6

58.6

49.9

50.8

53.5

52.3

52.0

47.8

46.6

40.3

Monthly discharge of Spreckels ditch at station No. 5, near Huelo, Maui, for 1912.

Month.

March. .........................................

April...... ........................................

May...............................................

July...............................................

September. ........................................

Discharge in second-feet.

Maximum.

36.0 

57.4 

58.6 

. 58.9 

56.2 

50.2 

52.0 

52.0 

55.0 

58.0 

72.8 

71.0

72.8

Minimum.

8.1 

6.9 

31.0 

42.4 

13.4 

- 12.0 

15.4 

11.4 

9.0 

9.9 

25.0 

8.1

6.9

Mean.

15.7 

28.3 

49.2 

52.3 

31.8 

28.1 

31.5 

27.3 

23.9 

34.2 

44.2 

37.7

33.7

Run-off 

(total in 

acre-feet).

965 

1,630 

3,030 

3,110 

1,960 

1,670 

1,940 

1,680 

1,420 

2,100 

2,630 

2,320

24,500

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

SPRECKELS DITCH AT STATION HO. 6, NEAR HTJELO, MAUI.

Location. About 4 miles by trail southeast of Huelo post office and about 100 feet

below Kolea Stream intake.

Records available. November 4, 1911, to December 31, 1912. 

Gage. Vertical staff; read once daily, usually about 4 p. m.; datum unchanged. 

Discharge measurements. Made from log at gage. 

Channel. Permanent. 

Accuracy. Records good. 

Cooperation. East Maui Ditch Co. assists in obtaining gage heights.

Discharge measurements of Spreckels ditch at station No. 6 near Huelo, Maui, in 191%.

Date.

Sept. 22

Nov. 7

Hydrographer.

I. B. Stewart... ..........................................................

.....do....................................................................

height.

Feet. 

0.92

1.49

1 1Q

Discharge.

Sec. -ft. 

21.4

49.0

38.8
182 WATEB EESOUBCES OP HAWAII, 1912.

Daily gage height, in feet, of Spreckels ditch at station No. 6, near Huelo, Maui, for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.46

1.47

1.45

1.45

1.42

1.40

1.40

1.40

1.40

1.38

1.20

1.17

1.10

1.07

1.01

.99

.97

.95

.90

.88

.80

.78

.74

1.34

1 00

.76

.72

.70

.68

.64

.65

Feb.

0.65

.61

.70

.65

.61

.58

.55

1.20

1.42

.80

.99

.83

1.41

1.53

1.10

.90

.85

.79

1.62

1.48

1.34

1.30 1 4>;

1.43

1.43

1.44

1.48

1.45

1.42

Mar.

1.42

1.44

1.43

1.43

1.42

1.42

1.42

1.42

1.43

1 44

1.49

1.50

1.48

1.43

1.52

1.52

1.53

1.21

1.30

1.59

1.58

1.57

1

K7

1.56

1.55

1.60

1.58

1

AK

1.44

1.53

1.52

Apr.

1.59

1.59

1.62

1.68

1.42

1.42

1.40

1.43

1.50

1.50

1 40

1.52 1 ^9

1.52

1.50

1.50

1 AQ

1.48

1.48

1 ttfi

1 4.Q

1 4.Q

1.48

1.50

1.50

1.51

1.50

1.50

1 40

1.48

May.

1.50

1.50

1.51

1.55

1.53

1.51

1.54

1.60

1.59

1.59

1.58

1.58

1.57

1.55

1.50

1.38

1.34

1.26

1.34

1.61

1 ^

1.12

1.08

1 Q9

1.13

1.60

1.60

I

CO

1.60

1.50

1.41

June.

1.35

1.31

1.20

1.10

1.00

.92

1.00

1.39

1.41

1.45

1.55

1.51

1.50

1.49

1.40

1.49

1.48

1.31

1.50

1.45

1.50

1.50

1.45

1.60

1.50

1 44

1.52

1 49

1.29

1.15

July.

£45

1.55

1.60

1.55

1.55

1.45

1.45

1.54

1.55

1.55

1.56

1.55

1.55

1.59

1.56

1.55

1.50

1.38

1.25

1.22

1.21

1.12

1.03

1.50

1.55

1.40

1.55

1.48

1.55

1.29

1.18

Aug.

1.00

.98

1.12

.93

.90

.85

.90

.81

1.54

1.54

1.52

1.52

1.51

1.56

1.54

1.51

1.49

1.46

1.46

1.40

1.31

1.50

1.49

1.30

1.18

1.45

1.40

1.10

1.50

1.45

1.45

Sept.

1.46

1.50

1.50

1.50

1.50

1.52

1.55

1.51

1.50

1.50

1.48

1.45

1.39

1.27

1.19

1.10

1.10

1.02

1.00

1.04

.95

.89

.85

.82

.78

.77

74

.69

.70

1.50

Oct.

1.48

1.50

1.47

1.48

.97

.90

.93

.90

1.43

1.10

.90

1.39

1.42

1.57

1.50

1.58

1.38

1.27

1.00

1.31

1.60

1.60

1.60

1.54

1.53

1.55

1.60

1.60

1.58

1.59

1.48

Nov.

1.58

1.59

1.59

1.58

1.52

1.50

1.49

1.50

1.50

1.60

1.58

1.53

1.50

1.50

1.55

1.58

1.58

1.60

1.59

1.58

1.60

1.60

1.59

1.59

1.60

1.59

1.59

1.59

1.58

1.60

Dec.

1.60

.75

.27

.22

.25

.29

.22

.15

.14

.13

.40

.82

.89

.55

.54

.90

.89

.90

1.00

1.19

1.29

1.24

1 SO

1.22

1.21

1.27

1.25

1.25

1.23

1.22

1.21

Daily discharge, in second-feet, of Spreckels ditch at station No. 6, near Huelo, Maui,

for 1912.

Day.

1.... ...........

2............... 3..........:....

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

48.0

47.5

47.5

46.0

45.0

45.0

45.0

45.0

35.0

33.8

31.0

29.8

27.4

26.7

26.1

25.5

24.0

23.4

21.0

20.4

19.2

42.0

27.0

19.8

18.6

18.0

17.4

16.2 

16.5

Feb.

16.5 i <; s

18.0

16.5

15.3

14.5

13.8

35.0

46.0

21.0

26.7

21.9

45.5

51.5

31.0

24.0

22.5

20.7

56.0

49.0

42.0

40.0

47.5

46.5

46.5

47.0

49.0

47.5

46.0

Mar.

46.0

47.0

46 5

46.5

46.0

46.0

46.0

46.0

46.5

47.0

49.5

50.0

49.0

46.5

51.0

51.0

51.5

35.5

40.0

54.5

54.0

53.5

53.5

 M ft

52.5

55.0

54.0

47.5

47.0

51.5 

51.0

Apr.

54.5

54.5

56.0

59.0

46.0

46.0

45.0

AR K

50.0 >;ft n

49.5

51.0

51.0

51.0

.50.0

50.0

40 ^

49.0

49.0

50.0

49.5

49.5

49 0

50.0

50.0

50.5

50.0

50.0

40 ^

49.0

May.

50.0

50.0

50.5

52.5

51.5

50.5

52.0

55.0

54.5

54.5

54.0

54 0

53.5

52.5

Kf\ A

44 0

42.0

38.0

42.0

55.5

41.5

31.8

oft o

S9 9

55.0

55.0

56.0

55.0

50.0 

45.5

June.

42.5

40 5

35.0

31.0

27.0

24.6

27.0

44.5

45.5

47.5

52.5

50.5

50.0

49.5

AR A

4.Q ^

49.0

40.5

50.0

47.5

50. 0 : 50.0

4.7 PI

55.0

50.0

47.0

51.0

46.0

39.5

33.0

July.

47.5

52.5

55.0

52.5

52.5

47.5

47.5

52.0

52.5

52.5

53.0

52.5

52.5

54.5

53.0

52.5

50.0

44.0

37.5

36.0

35.5

31.8

28.2

50.0

52.5

45.0

52.5

4Q ft

52.5

39.5 

34.2

Aug.

27.0

26.4

31.8

24.9

24.0

22.5

24.0

21.3

52.0

52.0

51.0

51.0

50.5

53.0

52.0

50.5

49.5

48.0

48.0

45.0

40.5

50.0

49.5

40.0

34.2

47.5

45.0

31.0

50.0

47.5 

47.5

Sept.

48.0

50.0

50.0

50.0

50.0

51.0

52.5

50.5

50.0

50.0

49.0

47.5

44.5

38.5

34.6

31.0

31.0

27.8

27.0

28.6

25.5

23.7

22.5

21.6

20.4

20.1

19.2

17.7

18.0

50.0

Oct.

49.0

50.0

48.5

49.0

26.1

24.0

24.9

24.0

46.5

31.0

24.0

44.5

46.0

53.5

50.0

54.0

44.0

38.5

27.0

40.5

55.0

55.0

55.0

52.0

51.5

52.5

55.0

55.0

54.0

54.5 

49.0

Nov.

54.0

54.5

54.5

54.0

51.0

50.0

49.5

50.0

50.0

55.0

54.0

51.5

50.0

50.0

52.5

54 0

54.0

55.0

54.5

54.0

55.0

55.0

54.5

54.5

55.0

54.5

54.5

54.5

54.0

55.0

Dec.

55.0

19.5

7.4

6.4

7.0

7.8

6.4

5.5

5.4

5.3

10.0

21.6

23.7

13.8

13.5

24.0

23.7

24.0

27.0

34.6

39.5

37.0

40 0

36.0

35.5

38.5

37.5

37.5

36.5

36.0 

35.5
ISLAND OF MAUI. 183 

Monthly discharge ofSpreckels ditch at station No. 6, near Huelo, Maui, for 1912.

Month.

January .................................... ...

February. .........................................

March.................... ... . .

April......................... .......

May...............................................

June.............. . .

July...............................................

August ............................................

September. ........................................

October. ..........................................

November. ........................................

December ........................................

The year.... ................................

Discharge in second-feet.

Maximum.

48.5 

56.0 

55.0 

59.0 

56.0 

55.0 

55.0 

53.0 

52.5 

55.0 

55.0 

55.0

59.0

Minim-pin,

16.2 

13.8 

35.5 

45.0 

30.2 

24.6 

28.2 

21.3 

17.7 

24.0 

49.5 

5.3

5.3

Mean.

31.6 

33.5 

48.9 

50.2 

48.4 

43.9 

47.4 

41.5 

36.7 

44.6 

53.3 

24.2

42.0

Kun-ofl 

(total in 

acre-feet).

1,940 

1,930 

3,010 

2,990 

2,980 

2,610 

2,910 

2,550 

2,180 

2,740 

3,170 

1,490

30,500

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

B.

SPRECKELS DITCH AT STATION NO. 7, NEAR HUELO, MAUI.

Location. About If miles by trail east of Huelo post office, between Oopuola and

Pa streams.

Records available. November 6, 1911, to December 31,1912. 

Gage. Vertical staff; read once daily, at irregular hours; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made from log at gage. 

Accuracy. Fair. 

Cooperation. East Maui Ditch Co. assists in obtaining gage heights.

Discharge measurements of Spreckels ditch at station No. 7 near Huelo, Maui, in 1912.

Date.

Sept. 22

Nov. 8

Dec. 21

Hydrographer.

J.B.Stewart... ..........................................................

.....do...................................................................

C.T. Bailey.. ............................................................

Gage 

height.

Feet. 

1.15

1.85

1.45

Discharge.

Sec.-ft. 

23.8

54.6

35.6

Daily gage height, in feet, ofSpreckels ditch at station No. 7, near Huelo, Maui, for 1912.

Day.

1...............

2...............

4.......:....... 

5...............

6............... 

7...............

8............... 

9...............

10............... 

11...............

12............... 

13............... 

14...............

15...............

16............... 

17............... 

18............... 

19............... 

20...............

Jan.

"i.'io"

1.10 

1.05

1.10

"i.'io'

1.00 

.95

.95 

.95

.95

.90 

.95 

.95 

.95 

1.00

Feb.

.......

 - - -

.......

.......

.......

"i.'is" 

"i.'io"

2.25

Mar.

1.80

1.95

1.75 

1.75

1.75 

1,75

1.75 

1.80

1.85

1.85 

1.85 i SK

1.80 

1.80

"i."85" 

1.75 

1.75

Apr.

1.65

1.75 

1.80

1.90 

1.80

1.80

1.80 

1.75

1.80 

1.80

1.80 

1.80

1.85 

1.85

"i."75~ 

1.80

May.

1.60

1.70 

1.65

1.80

1.70 

1.70

"2." 20"

1.70 "i.'es"

1.65

1.60

1.55 

1.50 

1.45

*"i."65"

June.

1.60 "i.'ss"

1.35 

1.35

1.30 

1.20

1.40

1.80 

1.70

1.70 

1.70 

1.70

1.70

"i.'es"

1.60 

1.85 

1.60

July.

1.60

1.75 

1.60

1.60 

1.80

1.70 

1.75

1.75 

1.60

1.65

1.60 

1.55 

1.50 

1.50 

L 1.50

Aug.

1.30

1.25 

1.30

"i.'iw"

1.05 

1.20

1.05 

1.80

1.75

1.80 

1.85 

1.80

1.70

1.80 

1.70 "i.'so"

1.60

Sept.

1.95 

1.90

1.85 

1.85

1.70 

1.80 "i.'es"

1.60 

1.60

1.60 

1.55 

1.55

1.50 

1.45 

1.55 

1.20 

1.20

Oct.

1.80

1.90 

1.70

1.40 

1.30

"i.'so"

1.12 

1.40

1.32 

1.20

1.90 "i.'ro"

1.90

1.70 

1.60 

1.60 

1.50

Nov.

1.80

1.80

1.80

1.70 

1.70

1.70 

2.00

1.75

1.70 

1.65 

1.65

1.60 

1.75 "i."9o"

1.90 

1.90

Dec.

2.00 

1.60

1.50 

.70

.70 

.80

""."45

.45 

.35

.35 

.40 

.40

.50

~".~50 

.55 

1.60 

1.30
184 WATEB EESOUECES OF HAW AH, 1912.

Daily gage height, in feet, of Spreckels ditch at station No. 7, near Huelo, Maui, for

1912 Continued.

Day.

21...............

22............... 

23............... 

24...............

25............... 

26...............

27............... 

28...............

29............... 

30...............

31...............

Jan.

1.00 

.95

.......

.......

.......

Feb.

2.00

1.95 

1.85 

1.80

1.65

1.90 

1.85

1.85

Mar.

1.70

1.65 

1.05

1.70 

1.75 "i.'es"

1.70 

1.75

Apr.

1.70 

1.70 

1.70

1.75 

1.80

1.80

1.75

May.

1.60

1.45 

1.40 

1.65

1.40

1.80 

1.80

1.75 

1.65

1.60

June.

1.85

1.65 

"i'.fc

1.65 

1.65

1.60 

1.65

1.50

July.

1.40 

1.40 

1.70

1.75 

1.60

1.70

1.65 

1.60

1.35

Aug.

1.55

1.80 

1.75 

1.60

1.40

1.55 

1.50

1.60 

1.55

1.55

Sept.

1.20 "i.'io"

1.10

1.05 

1.10

1.00 

1.00 "i.'ro"

Oct.

1.70

1.90 

1.90 

1.80

1.80 

1.70 "i.'ijo"

1.80 

1.80

Nov.

1.95

1.85 

1.85

2.40 

2.40

1.80 

1.70

1.70 

1.70

Dec.

1.25

"l."25 

1.73

1.50

1.50 

1.22

""."72

.70

Daily discharge, in second-feet, of Spreckels ditch at station No. 7, near Huelo, Maui,

for 1912.

Day.

1. ..............

2...............

3...............

5...............

6...............

7.. .............

8............... 

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20............ ..

21...............

22...............

23............ ..

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

23.0

23.0

23.0

23.0

21.5

23.0

23.0

23.0 

23.0

20.0

18.5

18.5

18.5

18.5

18.5

17.0

18.5

18.5

18.5

20.0

20.0

20.0

18.5

.......

Feb.

.......

25.0

30.0

35.0

77.0

62.0

59.5

54.5

52.0

48.5

45.0

57.0

54.5

54.5

Mar.

52.0

59.5

54.5

49.5

49.5

49.5

49.5

49.5 

52.0

53.2

54.5

54.5

54.5

54.5

52.0

52.0

53.2

54.5

49.5

49.5

47.0

45.0

21.5

34.3

47.0

49.5

47.2

45.0

47.0

47.2

Apr.

45.0

49.5

52.0

57.0

52.0

52.0

52.0

52.0 

49.5

52.0

52.0

52.0

52.0

53.2

54 5

54.5

52.9

51.2

49.5

52.0

49.5

47.0

47.0

47.0

49.5

52.0

50.7

49.5

May.

43.0

47.0

45.0

52.0

49.5

47.0

47.0

60.5 

74.0

60.5

47.0

45.0

45.0

49 n

41.0

39.0

37.0

41.0

45.0

43.0

37.0

35.0

45.0

35.0

43.5

52.0

52.0

49.5

45.0

43.0

June.

43.0

42.0

41.0

33.0

33.0

31.0

27.0

35.0 

43.5

52.0

47.0

47.0

47.0

47.0

47.0

46.0

45.0

43.0

54.5

43.0

54.5

45.0

52.2

59.5

45.0

45.0

43.0

45.0

39.0

41.0

July.

43.0

49.5

43.0

43.0

43.0

43.0

43.0

43.0 

52.0

47.0

49.5

49.5

43.0

44.0

45.0

43.0

41.0

39.0

39.0

39.0

37.0

35.0

35.0

47.0

49.5

43.0

47.0

46.0

45.0

43.0

33.0

Aug.

31.0

29.0

31.0

29.0

27.0

21.5

27.0

21.5 

52.0

49.5

50.7

52.0

54.5

52.0

47.0

52.0

47.0

49.5

52.0

43.0

41.0

52.0

49.5

43.0

39.0

35.0

41.0

39.0

43.0

41.0

41.0

Sept.

50.2

59.5

57.0

54.5

54.5

47.0

52.0

48.5 

45.0

43.0

43.0

43.0

41.0

41.0

40.0

39.0

37.0

41.0

27.0

27.0

27.0

25.0

23.0

23.0

21.5

23.0

20.0

20.0

33.5

47.0

Oct.

52.0

57.0

47.0

35.0

31.0

31.0

31.0

23.8 

35.0

31.8

27.0

57.0

52.0

47.0

57.0

47.0

43.0

43.0

39.0

43.0

47.0

57.0

57.0

52.0

52.0

47.0

52.0

57.0

52.0

52.0

52.0

Nov.

52.0

52.0

52.0

52.0

49.5

47.0

47.0

47.0 

62.0

55.7

49.5

47.0

45.0

45.0

43.0

49.5

53.8

57.0

57.0

57.0

59.5

54.5

54.5

70.2

86.0

86.0

52.0

47.0

47.0

47.0

Dec.

54.5

62.0

43.0

39.0

12.0

12.0

14.0

10.5 

7.0

7.0

5.0

5.0

6.0

6.0

8.0

8.0

8.0

9.0

43.0

31.0

29.0

29.0

29.0

48.5

43.7

39.0

39.0

27.8

20.1

12.4

12.0

NOTE. Discharge interpolated for days for which gage heights are missing.

Monthly discharge of Spreckels ditch at station No. 7, near Huelo, Maui, for 1912.

Month.

January (1-23) ....................................

February (17-29) ..................................

May...............................................

July...............................................

November. ........................................

The period. .................................

Discharge in second-feet.

Maximum.

59.5 

57.0 

74.0 

59.5 

52>0 

54.5 

59.5 

57.0 

86.0 

62.0

Minimum.

21.5 

45.0 

35.0 

27.0 

33.0 

21.5 

20.0 

23.8 

43.0 

5.0

Mean.

20.4 

50.3 

49.3 

50.9 

46.3 

43.9 

43.3 

41.4 

38.4 

45.4 

54.1 

23.2

Run-off 

(total in 

acre-feet).

930 

1,300 

3,030 

3,030 

2,850 

2,610 

2,660 

2,550 

2,280 

2,790 

3,220 

1,430

28,700

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.
ISLAND OF MAUI. 185

SPRECKELS DITCH AT STATION NO. 8, NEAR HtTELO, MATTI.

Location. About 1 mile by trail east of Huelo post office and 275 feet above gate

to storage reservoir.

Records available. November 4, 1911, to December 31, 1912. 

Gage. Vertical staff; read once daily, at irregular hours; datum unchanged. 

Channel. Permanent.

Discharge measurements. Made from plank. 

Accuracy. Good. 

Cooperation. East Maui Ditch Co. assists in securing gage heights.

Discharge measurements of Spreckels' ditch at station No. 8, near Huelo, Maui, in 1912.

Date.

Sept. 21

Dec. 25

Hydrographer.

J. B. Stewart. ........ ................................................. J. .

C. T. Bailey..............................................................

Gage 

height.

Feel. 

1.58

1.56

Dfecharge.

Sec.-ft. 

26.4

27.5

Daily gage height, in feet, of Spreckels ditch at station No. 8, near Huelo, Maui, for 1912.

Day.

3...................... 

4......................

5...................... 

6......................

7...................... 

8...................... 

9......................

10......................

11......................

12...................... 

13...................... 

14......................

15......................

16......................

17......................

18......................

19......................

20...................... 

21......................

22...................... 

23...................... 

24...................... 

25......................

26...................... 

27......................

28...................... 

29...................... 

30...................... 

31......................

Feb.

.......

.......

.......

.......

"".!.

1.50

1.80

2.40 

2.45

2.35 

2.30 

2.30

2.10 

2.40

2.30 

2.30

Mar.

2.20 

2.40

"2." 25~

2.25

2.25

2.30 

2.20 

2.30

2.40 

2.40 

2.40 

2.35

2.30

2.30

2.40

2.25

2.25 

2.20

2.15 

2.15

"2." 26"

2.25

2.25

2.10 

2.20 

2.25

Apr.

2.25 

2.40

2.40 

2.55

2.40 

2.35

"iso" 

2.25

2.30

2.30 

2.35 

2.30

2.40

2.40

2.25

2.30

2.20 

2.20 

2.20 

2.20

2.25

2.25

"2." 15" 

2.10

May.

2.10 

2.20

2.15 

2.20

2.20

2.15

2.10 

2.10 "2." 6s"

1.95

1.95

1.90

1.90

1.90

1.90 

2.10

1.90 

1.70 

2.10 

1.70

" ~2." 26'

2.25 

2.20 

2.10 

2.05

June.

1.90

1.85 

1.65

1.65 

1.60

1.60 

1.80

2.30

1.20 

2.10 

2.10 

2.10

2.10

2.00

1.85

2.10

1.95 

2.10

1.95

"2." 35' 

1.95

1.95 

1.95

2.10 

1.90

July.

2.00 

2.25

2.10

.......

"2." 66"

2.20

2.10

2.10 

2.10 

1.85 

2.10

2.10

2.10

2.05

2.00

1.90

1.90

1.80 

1.80 

2.30 

1.90

2.00 

2.10 "iio

2.05 

1.75

Aug.

1.70 

1.65

1.70

1.60 

1.50

1.60 

1.50 

2.20

2.15

"i" 26" 

2.35 

2.20

2.10

2.20

2.10

2.05

2.20

2.00 

1.95

2.20 

2.15 

2.00

1.90 

1.95

1.75 

2.05 

2.00 

2.10

Sept.

"i'50'

2.25 

2.40

2.10 

2.10

2.20 "i'io'

2.05

2.05 

2.04 

1.95 

1.95

1.90

1.85

1.70

1.65

1.70 

1.70 "i.'so'

1.50

1.45

1.50 

1.40

1.40 

"2.16

Oct.

2.20 

2.40

2.20 

1.70

1.62

1.62 

1.60 

1.80

1.70

1.60 

2.40 "i'io"

2.40

2.10

2.10

2.00

2.00

2.30

2.50 

2.50 

2.30 

2.20

2.00

2.50 

2.50 

2.40 

2.30

Nov.

2.20 

2.20

"2." 20"

2.10

2.10 

2.10 

2.60

2.20 

2.15 

2.10 

2.10

2.05

2.20

2.50

2.40

2.40 

2.45

2.30 

2.35 "i.~9o"

1.90

2.25

2.20 

2.20 

2.20

Dec.

"i'io

2.00 

1.30

1.30 

1.40

2.50 

""70

.70

.50 

.50 

.65 

.65

.80

.80

.90

2.10

2.00 

1.88 "i'ro

1.90

1.90 

1.90

1.62

""."92 

.90
186 WATER RESOURCES OF HAW AH, 1912.

Daily discharge, in second-feet, of Spreckels ditch at station No. 8, near Huelo, Maui,

for 1912.

Day.

1. .....................

2......................

3......................

4......................

5......................

6......................

7......................

8......................

9......................

10......................

11......................

12........... . . ..

13......................

14......................

15......................

16......................

17......................

18................. ..

19............... . ..

20................. ....

21.........

22...........

23......................

24.............

25............

26......... ..

27............. ...

28.................

29...................

30............

31.................

Feb.

25.0

29.5

34.0

58.0

60.0

56.0

54.0

54.0 Kf\ n

46.0

58.0

IA. n

54.0

.......

Mar.

50.0

58.0

55.0

52.0

52.0

52.0

54.0

50.0

54.0

56.0

58.0

58.0

58.0

56.0

54.0

54.0

56.0

58.0

52.0

52.0

50.0

48.0

48.0

49.0

CA A

52.0

52.0

46 0

50.0

52.0

52.0

Apr.

52.0

58.0

58.0

64.5

58.0

56.0

55.0

54.0

52.0

54.0

54.0

56.0

54.0

56.0

58.0

58.0

56.0

54.0

52.0

54.0

52.0

50.0

50.0

50.0

in ft

52.0

52.0

50.0

48 0

46.0

May.

46.0

50.0

48.0

50.0

50.0

50.0

48.0

47.3

46.6

46.0

46.0

45.0

44.0

40.0

40.0

38.0

38.0

38.0

38.0

38.0

46.0

38.0

31.0

46.0

31.0

40.5

50.0

52.0

50.0

46.0

44.0

June.

38.0

37.0

36.0

29.5

29.5

28.0

28.0

34.0

44.0

54.0

16.0

46.0

46.0

46.0

46.0

44.0

42.0

36.0

46.0

40.0

46.0

40.0

48.0

56.0

40.0

40.0

40.0

46.0

38.0

40.0

July.

42.0

52.0

46.0

45.2

44.4

43.6

42.8

42.0

50.0

46.0

46.0

46.0

36.0

46.0

46.0

46.0

44.0

42.0

38.0

38.0

36.0

34.0

34.0

54.0

38.0

42.0

46.0

46.0

46.0

44.0

32.5

Aug.

31.0

29.5

31.0

29.5

28.0

25.0

28.0

25.0

50.0

48.0

49.0

50.0

56.0

50.0

46.0

50.0

46.0

44.0

50.0

42.0

40.0

50.0

48.0

42.0

40.0

38.0

40.0

32.5

44.0

42.0

46.0

Sept.

54.0

62.0

52.0

58.0

46.0

46.0

50.0

48.0

46.0

44.0

44.0

43.6

40.0

40.0

39.0

38.0

36.0

31.0

29.5

31.0

31.0

28.0

25.0

25.0

23.5

25.0

22.0

22.0

34.0

46.0

Oct.

50.0

58.0

50.0

31.0

28.6

28.6

28.6

28.0

34.0

31.0

28.0

58.0

52.0

46.0

58.0

46.0

46.0

42.0

42.0

48.0

54.0

62.0

62.0

54.0

50.0

42.0

52.0

62.0

62.0

58.0

54.0

Nov.

50.0

50.0

50.0

50.0

48.0

46.0

46.0

46.0

67.0

58.5

50.0

48.0

46.0

46.0

44.0

50.0

56.0

62.0

58.0

58.0

60.0

54.0

56.0

47.0

38.0

38.0

52.0

50.0

50.0

50.0

Dee.

48.0

46.0

42.0

19.0

19.0

22.0

62.0

34.0

6.0

6.0

4.0

4.0

5.5

5.5

8.0

8.0

8.0

10.0

46.0

42.0

37.2

54.0

72.0

38.0

38.0

38.0

38.0

28.6

19.5

10.4

10.0

Monthly discharge of Spreckels ditch at station No. 8, near Huelo, Maui, for 1912.

Month.

March .............................................

April. . ............................................

May...............................................

June............................... ... ...........

July...............................................

August. . ..........................................

October ............................................

December. ........................................

The period.. .................................

Discharge in second-feet.

Maximum.

60.0 

58.0 

64.5 

52.0 

56.0 

54.0 

56.0 

62.0 

62.0 

67.0 

72.0

TlfirnTrmm.

25.0 

46.0 

46.0 

31.0 

16.0 

32.5 

25.0 

22.0 

28.0 

38.0 

4.0

Mean.

48.7 

52.8 

53.8 

43.9 

40.0 

43.0 

41.0 

38.7 

46.6 

50.8 

26.7

Run-ofl 

. (total in 

acre-feet).

1,250 

3,250 

3,200 

2,700 

2,380 

2,640 

2,520 

2,300 

2,870 

3,020 

1,640

27,800

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

CENTER DITCH REGION. 

CENTER BITCH NEAR HUELO, HAITI.

Location. About 3 miles by trail southeast of Huelo post office and about 1J miles

below ditch intake at Puohakamoa Stream. 

Records available. January 1, 1910, to December 31, 1912. 

Gage. Vertical staff; datum unchanged. 

Channel. Probably permanent.

Discharge measurements. Made from plank across ditch. 

Accuracy. Good. 

Cooperation. Station maintained in cooperation with East Maui Ditch Co.
ISLAND OF MAUI. 

Discharge measurements of Center ditch near Huelo, Maui, in 1912.

187

Date.

Mar. 11

Hydrographer.

C.T. Bailey..............................................................

Gage 

height.

Inches. 

23.2

49.9

Discharge.

Sec.-ft. 

39.2

87.0

Daily gage height, in inches, of Center ditch near Huelo, Maui, for 1912. 

[Asada, observer.]

Day.

1 

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Tan.

21.9

25.8

20.4

15.4

16.5

9.5

7.9

10.8

8.4

6.9

5.0

4.1

3.5

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

3.0

6.2

4.4

3.1

3.0

3.0

3.0

4.6

Feb.

3.8 

2.9

3.0

2.9

2.8

2.8

2.5

5.6

7.6

4.6

9.4

8.4

38.2

22.4

11.8

5.2

4.5

4.0

26.9

49.0

50.0

48.5

46.6

38.2

36.1

29.9

53.0

53.8

51.5

Mar.

53.5 

53.5

53.5

50.8

48.0

48.4

50.1

48.4

49.4

50.1

53.0

54.0

54.2

52.8

50.1

42.2

38.6

35.5

34.0

47.5

40.2

31.5

26.5

25.0

21.5

43.2

14.2

12.8

12.8

"47.0

55.0

Apr.

54.5

52.5

54.2

52.0

47.0

51.0

54.5

54.5

54.0

53.8

52.8

53.8

53.5

53.8

54.2

54.2

53.8

53.2

52.0

53.0

53.8

52.8

46.5

45.5

52.8

54.0

51.0

41.0

32.0

31.8

May.

27.5 

27.0

29.8

43.5

49.8

41.8

27.8

39.8

24.4

19.1

15.6

12.8

9.8

8.8

6.8

6.0

5.6

5.4

6.5

9.0

7.1

5.2

4.8

7.0

5.4

24.8

47.5

26.8

29.0

14.1

9.8

June.

6.0

5.5

5.1

4.6

4.2

4.2

4.5

6.8

6.4

31.0

40.9

23.0

26.4

16.0

21.0

22.2

10.0

6.5

12.6

11.0

28.6

12.2

6.6

35.8

14.0

11.8

14.0

9 9

5.8

5

O

July.

8.1 

20.0

25.5

36.6

22.5

11.4

9.9

21.4

47.5

27.2

31.5

14.4

29.9

17.8

15.8

9.4

6.2

5.8

5.4

5.1

6.1

5.2

4.8

23.5

9.4

5.6

6.6

6.8

12.5

5.8

4.6

Aug.

4.1 

4.0

4.8

4.2

3.9

3.8

4.5

4.5

14.0

8.2

32.8

21.8

16.0

28.2

45.0

29.6

17.5

8.9

14.6

5.9

5.2

22.6

10.6

5.5

4.9

5.4

5.6

4.8

17.0

8.4

13 1

Sept.

9.1

50.9

38.6

34.4

24.1

28.0

45.8

27.9

17.1

13.0

8.4

5.6

5.1

4.8

4.5

4.5

4.5

4.5

4.5

4.5

4.4

4.1

3.9

3.8

3.6

3.5

3.5

3.5

4.4

39.1

Oct.

13.4 

27.0

13.9

4.9

3.9

3.2

3.0

3.0

4.9

6.4

3.0

13.1

12.2

46.0

31.2

15.2

7.4

4.1

3.8

3.4

52.0

54.5

51.1

a o

32.0

14 1

55.0

53.1

34.1

45.1

55.0

Nov.

41.1 

33.5

45.9

30.2

21.5

20.6

15.6

13.5

55.0

55.8

48.1

33.9

27.0

25.2

17.8

55.0

55.0

55.0

50.4

47.9

40.8

42.4

39.1

32.2

35.1

32.9

26.6

29.0

18.4

18.5

Dec.

41.2 

54.8

50.2

32.4

29.5

.32.2

35.2

34.8

33.2

30.4

30.0

48.2

36.8

28.2

30.6

38.1

24.6

4H <»

50.2

50.8

43.0

56.5

36.0

55.5

53.0

55.8

55,5

Hi 8

51.4

49 2

Aft a

NOTE. Gage read at 6 a. m. and 6 p. m.

Daily discharge, in second-feet, of Center ditch near Huelo, Maui, for 191%.

Day.

 1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Jan.

32.8

41.6

29.8

19.8

22.0

9.2

7.1

10.8

7.7

5.9

3.9

3.0

2.4

2.0

2.0

Feb.

2 7

1.9

2.0

1.9

1.8

1.8

1.6

4.5

6.7

3.5

9.1

7.7

66.4

33.8

12.6

Mar.

93.5

93.5

93.5

89.6

85.0

85.8

88.2

85.8

87.4

88.2

93.0

94.0

94.4

92.6

88.2

Apr.

95.0

92.0

94.4

91.0

83.0

90.0

95.0

95.0

94.0

93.8

09 fi

93.8

93.5

93.8

94.4

May.

45.0

44.0

49.6

77.0

87.8

73.6

45.6

69.6

38.2

27.2

'X\ 9

14.6

9 7

8.2

5.8

June.

4 9

A. A

4.0

3.5

3.1

3 1

3.4

5.8

5.3

52.0

n

o

35.0

21.0

31.0

July.

7.3

29.0

41.0

63.2

34.0

11.8

9.8

31.8

84.0

44.4

is n

17.8

49.8

24.6

20.6

Aug.

3.0

9 Q

3.7

3.1

2.8

2 7

3.4

3.4

17.0

7.5

55.6

32.6

91 n

46.4

80.0

Sept.

8.6

89.8

67.2

58.8

37.3

ifi n

80.8

45.8

23.2

15.0

7.7

4.5

4.0

3.7

3.4

Oct.

15.8

a n

16.8

3.8

2.8

2.2

2.0

2.0

3.8

5.3

2 (\

15.2

13.4

81.0

52.4

Nov.

79 9

57.0

80.9

50.4

32.0

30.2

20.2

16.0

96.0

96.8

8K 9

57.8

44.0

40.4

24.6

Dec.

79 A.

95.6

88.4

U 8

49.0

KJ. A.

60.4

59.6

56.4

50.8

v\ n

63.6

46.4

51.2
188 WATER EESOURCES OP HAWAII, 1912.

Daily discTiarge, in second-feet, of Center ditch near Huelo, Maui, for 1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

oe

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.0

2.0

2.0

2.0

2.0

2.0

2.0

2.0

5.1

s ^

2.5

2.1

2.0

2.0

2.0

3.5

Feb.

4.1

3.4

2.9

JO Q

87.0

88.0

ftfi n

82.2

66.4

co 9

49.8

93.0

93.8

90.5

Mar.

74.4

67.2

61.0

58.0

84.0

70.4

53.0

43.0

40.0

09 n

76.4

17.4

14.6

14.6

83.0

96.0

Apr.

94 4

93.8

93.2

91 0

93 0

93.8

QO C

QO A

80.5

QO fi

94.0

90.0

79 A

54.0

53.6

May.

4 9

4.5

4.3

5.4

8

C

6.1

4.1

3.7

6.0

4.3

39.4

84.0

43.6

48.0

17.2

9 7

June.

33.4

10.0

<\ A.

14.2

11.0

47.2

13 A

5.6

61.6

17.0

11.2

17.0

8.8

4.7

4.1

July.

9 1

5.1

4.7

4.3

4.0

5.0

4.1

3.7

36.0

9 1

4.5

5.6

14.0

4.7

3.5

Aug.

4.0 9

24.0

. 8.4

18.2

4

0

4.1

P.J. 9

10.6

4.4

s ft

4.3

4.5

3 7

23.0

7.7

Sept.

S A '

3.4

3.4

3 A

3 4.

3.3

s ft

2.8

2.7

2.5

2.4

2.4

2.4

3.3

68.2

Oct.

19.4

6.5

3.0

2 7

2.4

91.0

QI\ ft

90.1

78.4

54 0

58'. 2

96.0

<M 1

58.2

80 1

QA f\

Nov.

96.0

96.0

96.0

QQ Q

CM. O

71.6

74.8

68.2

>vi A.

fifl 9

55.8

43.2

,10 A

25.8

26.0

Dec.

fifi 9

00 Q

80.5

88.4

OQ ( 

76.0

no A

62.0

96.5

no ft

96.8

96.5

(K A

on A.

87.2

71.6

NOTE. Discharge computed from mean of two gage readings each day.

Monthly discharge of Center ditch near Huelo, Maui, for 1912.

Month.

March.............................................

April..............................................

May . . ... ..........'. ........... . .........

July...............................................

December..

Discharge in second-feet.

Maximum.

41.6 

93.8 

96.0 

95.0

87.8

n.s

84.0 

80.0 

89.8 

96.0 

96.8 

98.0

98.0

MiTifTnuTn .

2.0 

1.6 

14.6 

53.6 

3.7 

3.1 

3.5 

2.7 

2.4 

2.0 

16.0 

38.8

1.6

Mean.

7.69 

34.90 

72.20 

88.70 

29.30 

18.50 

20.80 

16.30 

20.20 

38.30 

59.80 

73.10

67.30

Run-off 

(total in 

acre-feet).

473 

2,010 

4,440 

5,280 

1,800 

1,100 

1,280 

1,000 

1,200 

2,360 

3,560 

4,490

29,000

Accuracy.

B. 

A. 

A. 

A. 

B. 

B. 

B. 

B. 

B. 

B. 

A. 

A.

HAMAKUA DITCH REGION. 

NAILHLIHAEIiE STREAM NEAR HTTELO, MAUI.

Location. About 2 miles by trail above Huelo post office, 1 mile above Lowrie 

ditch intake, and 50 feet above trail ford.

Records available. July 24 to December 31, 1912. From December 9, 1910, to 

December 31, 1911, a station was maintained above the New Hamakua ditch 

intake.

Gage. Vertical staff; read twice daily, at 5.30 a. m. and 5.30 p. m.; datum unchanged.

Channel. Permanent.

Discharge measurements. Made by wading.

Cooperation. Station maintained in cooperation with East Maui Ditch Co.

Discharge measurements of Nailiilihaele Stream near Huelo, Maui, in 1912.

Date.

July 24

Nov. 11

Hydrographer.

.....do....................................................................

height.

Feel. 

0.75

1.60

Discharge.

Sec.-ft. 

1.00

44.3
ISLAND OF MAUI. 189

Daily gage height, in feet, of Nailiiliihaele Stream near Huelo, Maui,for 1912. 

[Eurukawa, observer.]

Day.

1.. .........

2........... 

3........... 

4...........

5........... 

6...........

7...........

8........... 

9........... 

10 ........

11........... 

12........... 

13...........

14........... 

15...........

July.

......

.:::..

......

Aug.

0.45 

.44 

.52 

.48

.42 

.40

.48

.52 

.92 

1.30

1.30 

1.32

.88

1.38 

2.02

Sept.

0.50 

1.80 

1.30 

1.20

1.15

.80

1.60

.85 

.68 

.52

.50 

.45 

.45

.45

.45

Oct.

0.45 

.85 

.45 

dn

.40 

.40

.40

.40 

.40 

.40

.50 

.40 

.40

1.50 

1.25

Nov.

1.45 

1.15

1.85 

.90

.80 

.50

.65

.50 

3.35 

1.75

1.65 

1.15 

.95

.80 

.60

Dec.

1.45 

2.20 

3.40 

1 65

1.55 

1.45

1.55

1.40 

1.15

.80

.65 

.50

.45

.65 

.45

Day.

16........... 

17........... 

18........... 

19...........

20- ...... 

21 ........

22 ........

23 ....... 

24........... 

25 ........

26 ........

27 ........ 

28.... .......

29... ........ 

30. ....... 

31.... .......

July.

------

......

"i.'os"

.92

.82 

.72

.88 

.45 

.45

Aug.

1.42

.82 

.70 

60

.52

.45

.72

.62 

.52 

.42

.45

.45 

.45

.78 

.58 

.65

Sept.

0.45 

.45 

.45 

.42

.40 

.40

.40

.40 

.40 

.40

.40 

.40 

.40

.40 

.75

Oct.

0.50 

.40

.40 

.40

.40 

1.80

2.10

1.70 

1.55 

1.15

1.35

2.80 

2.80

1.45 

1.60 

2.25

Nov.

1.54 

2.30 

2.40 

1.70

1.65 

1.40

1.45

1.40 

1.15 

1.20

1.20 

.85 

.70

.60 

.70

Dec.

0.90 

.45 

1.25 

2.00

1.50 

2.15

2.55

2.25 

1.70 

1.30

1.80 

1.50 

1.60

1.35 

1.25 

1.10

ETATT.TTA STREAM NEAR HTTELO, MATTI.

Location. At wagon bridge about 1,000 feet east of Huelo post office.

Records available. July 25 to December 31, 1912. From December 8, 1910, to

December 31, 1911, a station was maintained above the New Eamakua ditch

intake.

Gage. Vertical staff; read once daily, at irregular hours; datum unchanged. 

Channel. One channel at all stages; probably permanent. 

Discharge measurements. Made by wading or from bridge. 

Cooperation. Station maintained in cooperation with East Maui Ditch Co.

Discharge measurements of Kailua Stream near Huelo, Maui, in 1912.

Date.

July 25

Sept. 24

Hydrographer.

J. B. Stewart..................: r................ ..........................

.....do....................................................................

heightFeet. 

0.38

.25

Discharge.

Sec.-ft. 

0.90

.10

Daily gage height, in feet, of Kailua Stream near Huelo, Maui, for 1912. 

[John. Pachero, observer.]

Day.

1. .........

2. .........

3..........

4..........

5..........

6..........

7..........

8..........

9..........

10..........

11..........

12..........

13..........

14..........

15..........

July.

......

Aug.

0.33

.33

.34

.30

.30

.27

.30

.28

.36

.36

.40

.55

.42

.41

9 QC

Sept.

3.00

1.80

2.60

.60

.53

2.60

.52

.42

.36

.34

.31

.30

.30

Oct.

0.82

.62

.62

.43

.43

.42

.32

.34

.34

.33

.44

.62

2.12

1 49

.42

Nov.

2.40

2.20

2.20

2.20

......

.82

.82

.72

5.50

3.30

2.60

2.10

2.00

.80

79

Dec.

1.70

3.50

4.50

2.60

2.30

2.20

2 on

2.20

1.90

1.80

1.00

.82

.80

.80

79

Day.

16...........

17..........

18..........

19..........

20..........

21..........

22..........

23..........

24..........

25..........

26..........

27..........

28..........

29..........

30..........

31..........

July.

......

0.38

.36

.36

.36

.35

.33

Aug.

0.76

.54

.40

.42

.33

.31

49

.40

.38

.32

.32

.23

.30

30

.31

Sept.

0.29

.23

.23

.22

.31

.30

.23

.23

.21

.22

.21

.23

oo

1.10

Oct.

0.62

.53

.52

.52

.42

2.50

2.30

2.62

2.30

2.22

2.60

4.10

4.60

2.22

2.60

2.40

Nov.

3.50

3.40

3.90

2.70

2.50

2.40

2.30

2.50

2.10

1.50

1.48

1.70

1.00

.92

.82

Dec.

1.70

.82

1.80

2.70

2.70

1.90

3.30

4.30

2.33

3.00

2.13

2.00

o on

2.20

2.00
190 WATEE RESOURCES OF HAWAII, 1912. 

HOOLAWALm.il STREAM NEAR HUELO, HAITI.

Location. About 3 miles by trail southwest of Huelo post office, 1 mile east of Lupi, 

200 feet above inflow of Old Hamakua ditch and 400 feet above New Hamakua 

ditch crossing.

Records available. April 5, 1911, to December 31, 1912.

Gage. Vertical staff; read twice daily, about 6.30 a. m. and 4 p. m.; datum unchanged.

Channel. Rocky.

Discharge measurements. Made by wading.

Accuracy. Very good.

Discharge measurements of Hoolawaliilii Stream near Huelo, Maui, in 1912. 

[J. B. Stewart, hydrographer.J

Date.

Mar. 12... ....................

July 25. ......................

height.

Feet. 

0.12

.39

.13

Discharge.

Sec.-ft. 

3.09

10.0

3.03

Date.

Sept. 20. .....................

Nov.12... ....................

Gage 

height.

Feet. 

0.12

.28

Discharge.

Sec.-ft. 

2.32

10.9

Daily gage height, in feet, of Hoolawaliilii Stream near Huelo, Maui, for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26.!.............

27...............

28...............

29...............

30...............

31..............

Jan.

0.16

.16

.15

.14

.13

.12

.12

.13

.12

.12

.12

.12

.11

.11

.11

.11

.11

.11

.10

.10

.10

.09

.09

.12

.10

.10

.09

.09

.09

.09

.09

Feb.

0.09

.09

.09

.09

.09

.09

.08

.08

.12

.10

.10

.10

.19

.14

.12

.12

.12

.12

.17

.21

.30

.32

.24

.22

.24

.20

q.1

30

.27

.......

Mar. '

0.26

.30

.32

.27

.25

.24

.25

.22

.28

.26

.42

.38

.42

.33

.29

.25

.26

.36

.28

.26

.24

.22

.20

.20

19

.20

.18

.16

.15

.18

.16

Apr.

0.20

.20

.26

.78

.61

.46

.52

.52

.52

.42

.38

.36

.32

34

.34

.32

.30

.25

.24

.32

.24

.24

9*>

OC

.26

9J.

.24

99

.20

May.

0.20

.21

.18

.19

.18

.21

.19

.20

.18

.16

.15

.14

.14

.14

.12

.12

.12

.12

.12

.14

.12

.11

.11

.12

.11

1?

1 £

.16

13

13

.14

June.

0.13

.13

.12

.12

.11

.11

.11

.12

.11

.18

.16

.13

.15

.13

.13

.13

.13

.13

.12

.13

.13

.12

.12

.22

.14

.14

1 Q.

10

1°.

.12

July.

0.12

.12

.14

.14

.14

.14

.14

.14

.21

.14

.18

.14

.15

.15

.14

.14

.14

.13

.13

.13

.13

.13

.13

.14

.14

.14

1?

.14

1 3

.13

.12

Aug.

0.12

.12

.12

.11

.11

.11

.12

.11

.13

.12

.17

.12

.12

.14

.27

.16

.14

10

13

.12

.12

.16

.12

1*>

.12

1*>

1*>

.13

1*>

10

.12

Sept.

0.13

.20

.19

.20

.14

.14

.16

.15

.14

.14

.12

.12

.12

19

.13

13

.14

19

19

.12

.12

19

19

19

1*>

.11

.11

.11

.12

.15

Oct.

0.12

.13

.12

.12

.10

.10

.09

.08

.08

.08

.08

.08

.08

.12

.16

.10

08

.08

.08

.08

.16

.20

.20

1 ft

.15

.20

34

39

24

.27

Nov.

0.24

.22

.35

.22

.20

.18

.16

.14

.52

.34

.28

.24

oo

.20

.18

.38

.39

.42

ort

.36

Oft

.26

.26

.24

.24

OO

OA

.20

1 Q

1Q

Dec.

0.22

.42

.74

.35-

.25

24

.24

.22

.21

.20

.18

.17

.16

.16

.16

.16

.16

19

oo

.20

qo

qo

.34

.33

.30

9ft

.26

.26

.24

.24

.22
ISLAND OF MATJI. 191 

Daily discharge, in second-feet, of Hoolawaliilii Stream near Huelo, Maui, for 191%.

Day.

1... ............

2...............

3...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21... .............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

4.6

4.6

4.2

3.9

3.6

3.2

3.2

3.6

3.2

3.2

3.2

3.2

2.8

2.8

2.8

2.8

2.8

2.8

2.5

2.5

2.5

2.2

2.2

3.2

2.5

2.5

2.2

2.2

2.2

2.2

2.2

Feb.

2.2

2.2

2.2

2.2

2.2

2.2

2.0

2.0

3.2

2.5

2.5

2.5

5.6

3.9

3.2

3.2

3.2

3.2

5.0

6.5

11.0

12.1

8.0

7.0

8.0

6.0

13.2

16.0

9.5

Mar.

9.0

11.0

12.1

9.5

8.5

8.0

8.5

7.0

10.0

9.0

17.6

15.4

17.6

12.6

10.5

8.5

9.0

14.3

10.0

9.0

8.0

7.0

6.0

6.0

5.6

6.0

5.3

4.6

4.2

5.3

4.6

Apr.

6.0

6.0

9.0

38.8

28.6

19.8

23.2

23.2

23.2

17.6

15.4

14.3

12.1

13.2

13.2

12.1

11.0

8.5

8.0

12.1

8.0

7.0

8.0

7.0

8.5

9.0

8.0

8.0

7.0

6.0

May.

6.0

6.5

5.3

5.6

5.3

6.5

5.6

6.0

5.3

4.6

4.2

3.9

3.9

3.9

3.2

3.2

3.2

3.2

3.2

3.9

3.2

2.8

2.8

3.2

2.8

3.6

5.3

4.6

5.3

3.6

3.9

June.

3.6

3.6

3.2

3.2

2.8

2.8

2.8

3.2

2.8

5.3

4.6 3.6'

4.2

3.6

3.6

3.6

3.6

3.2

3.6

3.6

3.2

3.2

7.0

3.9

3.9

3.6

3.6

3.6

3.2

July.

3.2

3.2

3.9

3.9

3.9

3.9

3.9

3.9

6.5

3.9

5.3

3.9

4.2

4.2

3.9

3.9

3.9

3.6

3.6

3.6

3.6

3.6

3.6

3.9

3.9

3.9

3.6

3.9

3.6

3.6

3.2

Aug.

3.2

3.2

3.2

2.8

2.8

2.8

3.2

2.8

3.6

3.2

5.0

3.2

3.2

3.9

9.5

4.6

3.9

3.6

3.6

3.2

3.2

4.6

3.2

3.2

3.2

3.2

3.2

3.6

3.2

3.6

3.2

Sept.

3.6

6.0

5.6

6.0

3.9

3.9

4.6

4.2

a. 9

3.9

3.2

3.2

3.2

3.2

3.6

3.6

3.9

3.2

3.2

3.2

3.2

3.2

3.2

3.2

3.2

2.8

2.8

2.8

3.2

4.2

Oct.

3.2

3.6

3.2

3.2

2.5

2.5

2.2

2.0

2.0

2.0

2.0

2.0

2.0

3.2

4.6

2.5

2.0

2.0

2.0

2.0

4.6

6.0

6.0

5.3

4.2

6.0

13.2

16.0

8.0

9.0

9.5

Nov.

8.0

7.0

13.8

7.0

6.0

5.3

4.6

3.9

23.2

13.2

10.0

8.0

7.0

6.0

5.3

15.4

16.0

17.6

14.3

14.3

10.0

9.0

9.0

8.0

8.0

7.0

6.0

6.0

5.3

5.3

Dec.

7.0

17.6

36.4

13.8

8.5

8.0

8.0

7.0

6.5

6.0

5.3

5.0

4.6

4.6

4.6

4.6

4.6

5.3

10.0

6.0

12.1

12.1

13.2

12.6

11.0

10.0

9.0

9.0

8.0

8.0

7.0

Monthly discharge of Hoolawaliilii Stream near Huelo, Maui, for 1912.

Month.

February. .........................................

March.................................... ... ...

April. .............................................

May...............................................

June. .............................................

July...............................................

August. . ..........................................

September. ........................................

November. ............................... ...

The year ....................................

Discharge in second-feet.

Maximum.

4.6 

16.0 

17.6 

38.8 

6.5 

7.0 

6.5 

9.5 

6.0 

16.0 

23.2 

36.4

38.8

Minimum.

2.2 

2.0 

4.2 

6.0 

2.8 

2.8 

3.2

2

0 

. 0

2.8 

2.0 

3.9 

4.6

2.0

Mean.

2.96 

5.26 

9.02 

13.1 

4.31 

3.64 

3.89 

3.61 

3.70 

4.47 

9.32 

9.21

6.03

Run-oft 

(total in 

acre-feet).

182.0 

303.0 

555.0 

780.0 

265.0 

217.0 

239.0 

222.0 

220.0 

275.0 

555.0 

566.0

4,380.0

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

HOOLAWANUI STREAK NEAR HUELO, MATJI.

Location. About 3J miles by trail southwest from Huelo post office, one-fourth mile 

east of Lupi, and 250 feet above crossing of New Hamakua ditch.

Records available. December 12, 1910, to December 31, 1912.

Gage. Vertical staff; read twice daily, about 6.30 a. m. and 5 p. m.; datum 

unchanged.

Channel. Practically permanent.

Discharge measurements. Made by wading.

Accuracy. Very good.

Cooperation. Station maintained in cooperation with East Maui Ditch Co.
 a S± M 0 -

co^^^*.

OaOOOO

coenootoc*s

tOOOrfxtO

-joioooco

i-'oaoo&ooo

to to (Oto co 

*fcOai-^oa -j

Co tow too

oenoocn

tncnoaen^,

oenenentn

CnOOOO

S^oococa

rt^ en (0(00

^wcocow

oo to to to 01

o.enotroo

SSCK^

00(0*-^0>

-J 00 06 000

CnOOOO

pcooo-Jca

en en oa Oa oa

OOOOO

jf^enfot-fo

OOt^oaO

en oarffc oaen

o^*-^o

CO.g.gjgCO

Oa-J00*.oa

pocopcoh-j 

ooooo*.

OO^^^rt,

ooooo

ptopenen

O Oao en en

co en (0(0(0

MO^^Ifc

co 14^. c* os en

(OOOOO

Oa oa oa oa Ok

coo>

*.*-ooo

cOO>-> CO-4

O to*, oo oo

en if» co bo j->

Oa Oa ~-j 00 00

OCnOOO

to to to to to

oooo*.

-^ CO en COM

I-* 10 en to 00

engto-g

roto w*. to

CO (0 COOp 

OoaOOO(O

^^^ ww ooenoo

o to omen

to to to to co

*.*.ooooto

Cno>oacO(O

oenenooo

»SE25S

OX^COO.-<I

5£3S^»

tooaboaot

0

R"

pg

w^

1

CD

g

c

on

CO

f

o

r*

o

.

S

I

I.

03

H* OcDQO^-JOa Cn^COfcOl-1 

5OOO Ol OOC 

S-J-J-J -JfcO-vI-JC

S3QSS8

Cntfe. O3h-*QOC

WO3Oirfh.cn COW fcO COO? 

OOQOOSCOOi OWWfcOO

to to c

*. -4

CO CO CO CO CO OJI-'CO-JOO -jco toro to

» W ~-JQO O Crt h-*fcO h-HOrf^ tR CO CO COCO

1 10(0(0(0 tO tO tO tO tO tOCOtRCO-^J OOOOOO 

OOl Ml-*fcO tOrfH-H W h-»h-»fcOfcOCO

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 J tO O5 wi 00 tO OS rf». iji rfk rfk 0i tdcn^l&cn

oooooio "

CO M- h- t
ISLAND OF MAUI. 193

Daily discharge, in second-feet, ofHoolawanui Stream near Huelo, Maui,for 1912 Contd.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

3.2

3.2

3.2

3 9

3.2

2.8

2.8

5.0

2.8

2.8

2

Q

2.8

2.4

2.4

2.4

Feb.

3.2

2.8

2.4

7.0

16.4

22.0

33.8

11.4

12.0

8.5

14.4

32.2

19.9

Mar.

15.0

17.8

25.5

17.1

15.0

13.8

11.4

10.2

10.8

Q ft

8.0

7.5

13.2

19.2

Apr.

20.6

19.9

17.1

15.7

1Q 9

15.0

12.6

16.4

14.4

16.4

17 S2

15.0

13.2

11.4

May.

5

K

5.5

5.5

5.5

6.5

6.0

5.0

4

C

5.0 4 ;

6.5

9 n

8.0

7.5

5.5

5.5

June.

5.0

5.0

5.0

5.0

5.0

5.0

5.0

4

C

10.8

6.0

5.0

5.0

5.0

5.0

4.5

July.

5.5

5.0

5.0

4.5

4

C

5.0

4.5

4 i?

6.0

5.0

5.0

4.5

5.0

4.5

4.0

4.0

Aug.

6.0

3.6

3.2

3.2

3 9

2.4

92.0

2

Q

9 A

2.4

2.4

2.4

2.0

2.8

2.4

2.4

Sept.

2

Q

3.2

2.4

2.4

2.4

2 n

2.0

2 ft

2 ft

2.0

1.6

1.6

1.6

2.4

5.0

Oct.

2

4

1.6

1.6

1.6

1.6

10.2

15.0

11.4

9.6

7.0

10.2

20.6

25.5

12.6

16.4

26.9

Nov.

9O ft

29.0

38.6

27.6

O1 Q

17.1

15.7

15.0

12.6

12.6

11.4

9.0

8.0

8.0

Dec.

8 A

10.8

15.0

17.1

10.2

25.5

33.8

09 9

99 fi

23.4

20.6

1Q Q

17.8

16.4

13.2

11.4

Monthly discharge of Hoolawanui Stream near Huelo, Maui, for 1912.

Month.

February. .........................................

March. ..........................................

May...............................................

July...............................................

October. ..........................................

The year. ...................................

Discharge in second-feet.

Maximum.

8.0 

33.8 

33.8 

70.2 

12.6 

10.8 

12.6 

92.0 

9.0 

26.9 

68.4 

100.0

100.0

Minimum.

2.4 

1.6 

7.5 

11.4 

4.5 

4.0 

4.0 

2.0 

1.6 

1.6 

7.0 

7.5

1.6

Mean.

4.25 

8.50 

16.90 

25.80 

7.40 

5.24 

5.67 

6.22 

3.48 

6.79 

18.30 

18.80

10.60

Run-off 

(total in 

acre-feet).

261 

489 

1,040 

1.540 

455 

312 

349 

382 

207 

418 

1,090 

1,160

7,700

Accuracy.

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B. 

B.

HONOPOTT STREAM NEAR HUELO, MAUI.

Location. About 4 milea southwest of Huelo post office and three-fourths of a mile 

northwest of Lupi.

Records available. December 12, 1910, to December 31, 1912.

Gage. Vertical staff; read twice daily, about 7 a. m. and 5 p. m.; datum unchanged.

Channel. Probably permanent.

Discharge measurements. Made by wading.

Accuracy. Discharge rating not yet available.

Cooperation. Station maintained in cooperation with East Maui Ditch Co.

Discharge measurements ofHonopou Stream near Huelo, Maui, in 1912. 

[J. B. Stewart, hydrographer.]

Date.

Mar. 12.......................

Gage 

height.

Feet. 

0.11

.48

Discharge.

Sec.-ft.

10.4

Date.

July 26.......................

Sept. 20... ..................

Gage 

height.

Feet. 

0.10

.07

Discharge.

Sec.-ft. 

1.65

1.41

14694° WSP 336 14
194 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Honopou Stream near Huelo, Maui,for 1912. 

[Miyabara, observer.]

Day.

1. ..............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.20

.20

.18

.18

.16

.16

.16

.15

.14

.12

.12

.12

.12

.11

.11

.10

.10

.09

.08

.08

.08

.08

.13

.10

.10

.09

.08

.08

.07

.07

Feb.

0.06

.06

.06

.06

.05

.05

.06

.12

AQ

.08

.08

.20I 1*

09

.08

.07

.06

1 S

00

.38

.27

.24

.23

.45

.4704.

Mar.

0.36

.41

Af\

.35

.33

00

00

.28

.33°.ft

.52

.44

.52

d.9

00

00

en

34

34

30

OQ

.26

.24

.21

.20

.20

A-pr.

0.28

OK

*M

1 1**

.83

.56

79

.78

.72

.58

.52

.50

.44

CA

.51

.44

Af\

.38

.36

.41

34

.30

.34

.31

.30

.34

.31

.28

.28

.26

May.

0.24

.23

.28

.22

.22

.20

.22

.20

.18

.17

.16

.16

.15

.14

.13

10

.13

.13

.14

.13

.12

.11

.12

.10

.16

.21

.18

.18

.13

.14

June.

0.12

.11

.10

.10

.10

.10

.09

.09

.09

.14

.12

.12

.12

.11

.12

.12

.10

.10

.10

.10

.10

.10

.09

.18

.12

.11

.11

.11

.10

.10

July.

0.10

.10

.13

.17

.12

.11

.12

.11

.26

.12

.16

.12

.12

.11

.11

.11

.10

.10

.10

.10

.10

.09

.09

.12

.12

.10

.09

.11

.10

.08

.08

Aug.

0.08

.07

.07

.06

.06

.06

.06

.06

.06

09

.14

.08

.08

.10

.22

.12

.08

.07

.06

.08

.06

.12

.06

.06

.06

.05

.05

.05

.06

.06

.06

Sept.

0.07

.17

.11

.17

.10

.10

..14

.11

.10

08

.08

.07

.07

.06

.06

.06

.06

.06

.05

.06

.05

.05

.05

.05

.04

.04

.04

.04

.06

.10

Oct.

0.07

.10

.06

.04

.04

.04

.04

.04

.04

04

.04

.04

.04

1.54

.08

.06

f\A

.04

.04

.04

.18

.21

.20

.16

.14

.15

.48

.52

.24

.28

.41

Nov.

0 9Q

°.7

.20

.20

1 ft

.16

.78

.42

.36

OQ

.26

.24

99

.40

AC.

.53

.47

.39

.33

.32

.30

.28

.30

.28

.28

.24

.21

.20

Dec,

0.24

.53

96

.55

.39

.36

07

^d

.26

98

.26

.24

.22

.22

.21

.21

.24

.24

.38

.28

.59

.66

.66

,4*

.43

.40

.36

.38

.36

.32

.28

HALEHAKTT STREAM WEIR NEAR HTTELO, MATTI.

Location. About 7 miles west of Huelo post office and 3J miles west of Lupi at New 

Hamakua ditch crossing.

Records available. January 1, 1910, to December 31, 1912.

Gage. Head on weir measured by graduated scale to reference point back of diversion dam.

Discharge measurements. By 6-foot Cippoletti weir.

Cooperation. Weir is the property of the East Maui Ditch Co.; discharges copied 

from records of the Maui Agricultural Co.

Daily discharge, in million gallons, of Halehaku Stream weir near Huelo, Maui, for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

16...............

Jan.

3.33

3.07

2

QA

9 7°.

2.37

2.33

2.37

2.10

1.90

1.83

1.66

1.60

1.60

1.50

Feb.

0.70

.80

97

.70

.65

.60

.60

1 ft7

.80

1.15

97

2.40.

1.63

.80

Mar.

9 20

11.00

1 9 AA

10.00

8

70

7 ftQ

8

oq

8 97

9

CA

. 7.63

9.87

19 QA

12.80

10.80

9.00

Apr.

9.90

7.50

9

C7

12.80

12.90

12.90

12.90

19 QA

19 QA

12.90

12.90

12.90

12.90

12.90

12.00

MSy.

5.13

4.76

4.57

5.23

4.86

5.23

3.96

4.23

3.56

3.35

3.10

2.95

2.73

2.50

2.40

June.

1.40

1.30

1.20

1.20

1.20

1.20

1.10

1.20

1.10

2.77

2.17

2.13

1.52

1.23

1.70

July.

1.30

1.20

1.53

2.90

2.00

1.45

1.30

1.93

3.73

2.10

1.90

1.55

1.65

1.50

1.40

Aug.

0.67

.53

.70

.43

.53

.53

.56

.41

.96

.80

1.13

.74

.70

.86

2.13

Sept.

0.70

2.47

2.10

2.13

1.67

1.23

2.40

1.37

1.00

.85

.80

.73

.70

.60

.60

Oct.

0.60

1.07

.60

.42

.30

.30

.30

.30

.35

.30

.35

.30

.57

3.17

1.37

Nov.

7.00

5.64

5.30

3.93

3.43

3.00

2.80

3.40

12.20

12.20

10.20

6.93

5.53

4.73

4.80

Dec.

4.80

9.67

12.50

10.50

8.03

7.30

7.97

5.57

4.80

4.30

3.90

3.60

3.40

3.80

2.93
ISLAND OF MAUI. 195

Daily discharge, in million gallons, of Halehaku Stream weir near Huelo, Maui,for

1912 Continued.

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.30

1.17

1.15

1.10

1.07

1.00

1.07

2.23

1.10

1 00

.95

.85

.75

.70

.70

Feb.

0.70

.70

1.03

4.70

6.43

8.70

12.10

5.63

3.77

3.23

3.50

12.20

12.80

9.97

Mar.

7.83

7.77

9

QA

7.33

6.35

5.60

5.10

4.70

5.13

5.10

4

4<>

3.90

3.55

4.93

8.33

Apr.

11.00

in ftA

9 83

8.80

7.87

6.33

6.53

6.07

6.97

6.75

6.50

6.10

5.65

5.57

May.

0 OA

0 OA

0 OA

2.36

2.60

2.00

1.80

1.67

1.58

1.90

2.23

3.43

2.30

2.13

1.70

June.

1.17

1 99

1 A.%

1 ^

1 Q9

1.30

1.40

9 A3.

1.20

1.20

1.20

1.10

1.10

1.00

July.

1 ^n

1.10

1 00

1 00

1.15

Q7

1.07

2.33

1.40

1.10

1.00

1.05

1.20

.75

.70

Aug.

1 00

.63

60

.58

.50

.60

.95

.50

.40

.40

.50

.50

.43

.95

.50

.53

Sept.

O

co

en

.45

.40

AK

.55

.40

.40

.30

.30

-.35

.40

.40

.73

2.23

Oct.

A QA

CA

QA

QA

.63

3.07

7 40.

4 40

3.43

2 77

7.47

6.97

5.13

11.90

Nov.

10.50 10 on

12 90

12 90

11.50

S on

7.62

6.77

5.93

5.17

5 Aft

4

CA

3.80

4.07

Dec.

4.70

4.27

4 97

s 7n

8.23

12.60

12.40

Q *\ft

7 60

Q A7

7.20

7.43

5.67

5.67

5.07

NOTE. Discharge based on two readings daily. A gage was maintained on crest of wasteway at this 

station to show the amount of water in the stream which was not diverted into the ditch at the weir. 

No discharge over the wasteway except as noted in the following table, showing gage height in feet. 

The zero of the gage is at the same elevation as the crest of the wasteway.

Feb. 21...........

Feb. 22. ..........

Feb. 27...........

TTpH 9S

Mar. 11.. .........

Mar. 12... ........

Mar. 13... ........

Mar. 14.. .........

Mar. 29.. .........

.......... 0.15

.......... .10

.......... .32

.......... .26

.......... .06

.......... .18

.......... .19

.......... .12

04

08

.......... .02

Apr.9... .........

Apr. 10... ........

Apr. 11... ........

Apr. 12.. .........

Apr. 13.. .........

Atjr.14.. .........

.......... 0 54

.......... .48

.......... .25

.......... .26

.......... .34

.......... .28

.......... .25

.......... .16

.......... .11

.......... .09

.......... .21

Apr. 15...........

Oct. 31...........

Nov. 9 ...........

Nov. 10..........

Nov. 16..........

Nov. 18..........

Nov.19.. ........

Nov.20... .......

Dec. 3............

Dec. 22 ...........

.......... 0.10

.......... .25

.......... .20

.......... .20

.......... .10

.......... .25

.......... .20

.......... .10

.......... .40

.......... .15

Monthly discharge of Halehaku Stream weir near Huelo, Maui, for 1912.

Month.

July............................................. -..-..-

Discharge in million gallons.

Maximum.

3.33 

12.80 

12.90 

12.90 

5.23 

2.77 

3.73 

2.13 

2.47 

11.90 

12.90 

12.60

12.90

Minimum.

0.70 

.60 

3.55 

5.57 

1.58 

1.00 

.70 

.40 

.30 

.30 

2.80 

2.93

.30

Mean.

1.65 

3.50 

7.94 

9.75 

2.99 

1.43 

1.48 

.69 

.93 

2.33 

6.92 

6.60

3.84

Run-off 

(total in 

million 

gallons).

51.0 

102.0 

246.0 

293.0 

92.6 

42.9 

46.0 

21.2 

27.8 

72.2 

208.0 

205.0

1,410.0
196 WATER RESOURCES OF HAWAII, 1912. 

OPANA STREAM NEAR HUELO, MAUI.

Location. About 8 miles west of Huelo, 4J miles west of Lupi, and one-half mile

from intake of Opana ditch.

Records available. December 13, 1910, to December 31, 1912. 

Gage. Inclined staff; read twice daily, about 7 a. m. and 4.30 p. m.; datum

unchanged.

Channel. Probably permanent. 

Discharge measurements. Made by wading and from bridge.

The following discharge measurement was made by J. B. Stewart: 

January 12, 1912: Gage height, 1.40 feet; discharge, 0.75 second-foot.

Daily gage height, in feet, of Opana Stream near Huelo, Maui, for 1912.

Day.

1.. ............ .

2............... 

3...............

6...............

7...............

8...............

9...............

10...............

11..... ..........

12............... 

13............... 

14...............

15...............

16...............

17...............

18...............

19...............

20...............

yi.. .............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.48

1,48 

1.48

1.48

1.47

1.48

1.48

1.47

1.47

1.27

1.46 

1.45 

1.42 1 /to

1.38

1 OQ

1.38

1.38

1.38

1 V7

1 07

1.37

1.42

1.39

1.34

1.36

1.36

1.35

1.35

Feb.

1.35

1.35

1 34

1.34

1 94

1 94

1 94

1.41

1.42

1.39

1.38 

1.38 

1.42

1 4ft

1 9,7

1.36

i 9>;

1.34

1.48

2 7ft

2.21

1.58

1.50

1.44

1.39

2.88

1.81

Mar.

1.60

1.99 

2.14

1.60

1.59

1.62

1.60

1.62

1.60

1.60

1.74 

2.10 

1.60

1 f.(\

1.58

1.54

i >;4

1.60

1.56

1.56

1.54

1.53

1.53

1.53

1.53

1.54

1.53

1.52

1.52

1.96

2.53

Apr.

1.98

1.56 

1.56

3.04

3.42

1.92

2.28

2.71

2.32

2.08

1.58 

1.56 

1.56

1 QO

1.57

1 C7

1 ^fi

1.55

1.54

1 CO

1 CO

1 CO

1 CO

1.54

1.54

1.52

1.52

Hay.

1.52

1.52 

1.52

1.51

1.50

1.50

1.50

1.50

1.50

1.50

1.49 

1.48 

1.47 

1 46

1 45

1 45

1 45

1 4>;

1.45

1 ,10

1.47

1.42

1.41

1 11

1.42

1.45

1.49

1 4fi

1.47

1.45

1.44

June.

1.45

1.41 

1.41

1.41

1.41

1.40

1.40

1.40

1.40

1.44

1.44 

1.40 

1.42

1 A(\

1 40

1 ^7

1.36

1.36

1.34

1.38

1 Qfi

1.36

1.35

1.44

1.42

1.38

1.35

1 oA

1.33

1.32

July.

1.33

1.32 

1.33

1.40

1.40

1.40

1.36

1.34

1.45

1.39

1.36 

1.34 

1.31

1 O_ft

1 Oft

1.24

1.23

1.22

1 91

1.20

1.18

1.18

1.28

1.30

1.29

1 24

1.24

1.23

Aug.

1.22

1.19 

1.20

1.19

1.13

1.12

1.12

1.10

1.12

1.12

1.14 

1.10 

1.10 

1.10

1.18

1 O1

1.22

1.16

1.12

1.08

1 13

1 05

1.02

" 1.01

.96

.95

.92

.92

.90

.85

Sept.

0.85

.95 

1.41

1.42

1.42

1.32

1.40

1.48

1.38

1.28

1.21 

1.17 

1.14 

1.08

I

ftO

99

.98

94

.92

Q9

.82

.70

CQ

4A

.33

.22

.05

.14

Oct.

0.01

.01 

.00

.00

.00

.00

.00

.00

.00

1.55

1.25

1.10

1.00

91

95

2.20

1.80

1.70

1.55

1.70

1.80

1.65

1.50

3.75

Nov.

1.80

1.55 

1.50

1.50

1.45

1.40

1.40

1.40

4.30

2.30

1.70 

1.55 

1.50 

1 ttfi

2.20

2.25

1.70

1.70

1.60

1.60

1 60

1 45

1.50

1.50

1.50

1.50

1.55

Dec.

1.60

1.75

2.75

1.90

1.60

1.60 i.eo

1.55

1.50

1.65

1.50 

1.50 

1.50 i "in

1.50

1 65

1.65

1.65

1.65

1.60

1.75

2.20

1.75

1 66

1.60

1.74

1.72

1.56

1.59

1.53

1.51

OPANA DITCH NEAR HUELO, MAUI.

Location. About 8J miles west of Huelo by trail, 5 miles west of Lupi, and about

half a mile below ditch intake.

Records available. January 1, 1910, to December 31, 1912.

Gage. Head on weir measured by graduated scale on reference point in weir pool. 

Discharge measurements. By 6-foot Cippoletti weir. 

Cooperation. Records are copies from office of Maui Agricultural Co., but weir is

the property of East Maui Ditch Co.

The following discharge measurement was made by J. B. Stewart:

January 12,1912: Gage height, 1 inch (head on weir); discharge, 0.58 second-foot.
ISLAND OP MAUL 197 

Daily discharge, in million gallons, of Opana ditch near Huelo, Maui, for 1912.

Day. Jan. Feb. Mar. Apr. May. June. July. Aug. Sept. Oct. Nov. Dec.

10.

11.

12.

13.

14.

15.

16.

17.

18.

19.

20.

21.

22.

23.

24.

25.

26. 

&7.

S:

30.

31.

0.87 

.80 

.90

.87 

.70

.73 

.60 

.43 

.40 

.37

.23 

.20 

.16 

.10 

.10

.10 

.10 

.10 

.10 

.10

.10 

.10 

.20 

.80 

.23

.15 

.10 

.10 

.10 

.10 

.10

8.77

12.60

14.30

9.30

7.05

7.80

8.73

8.67

6.37

6.53

8.23

12.30

8.90

7.40

6.30

3.57

3.10

4.90

2.13

2.00

1.50

1.35

2.20

2.00

1.10

1.40

.90

.70

.70

8.70

13.30

11.70

8.63

10.60

16.80

15.40

12.70

12.60

14.00

14.90

12.60

9.60

7.57

7.30

11.70

9.33

10.00

9.23

9.15

7.13

4.00

3.43

2.40

2.10

1.70

2.67

4.40

2.40

1.55

1.45

1.40

1.30

1.33

1.16

1.53

1.50

1.12 

.90 

.89 

.70 

.60

.50 

.40 

.40 

.40

.30 

.20 

.30 

.30 

.35

.20 

.20 

.20 

.30 

.20

.60 

1.13 

.60 

.40 

.15 

.10

0.10 

.10 

.10 

.10 

.10

.10 

.10 

.10 

.10 

.63

.15 

.40 

.20 

.10

.20 

.10 

.00 

.20 

.10

.27 

.10 

.10 

.70 

.10

a)

(a) 

(a) 

(a) 

(«) 

(<*)

(a)

0.05

4.27

(a)

(a)

.77 

9.03 

3.03

.03 

(a)

(a)

2.40

3.33

.70

.76

13.20

5.20 

.93 

.17

(a)

(a)

1.20

15.40

5.37

1.63

.50

.30

.50

6.20

9.33

7.50

7.50

5.93

5.37

4.43

1.73

.90

.83

.60 

.40 

.39 

.33 

.40

1.27

5.07

8.30

4.13

2.10

1.43

1.47

.93

.67

.50

.40 

.37 

.27 

.40 

.40

.93

1.40 

.90 

.93 

.63

1.30

6.13

6.03

2.43

1.77

6.17

6.10

3.23

1.60

1.07

.93

a Channel dry. 

Monthly discharge of Opana ditch near Huelo, Maui, for 1912.

Month.

January. .................................................

March

April... . .................................................

May......................................................

July......................................................

September ...............................................

The period. .................................

Discharge in million gallons.

Maximum.

0.90 

15.40 

14.30 

16.80 

1.53 

.70 

1.27

13.20 

15.40 

8.30

Minimum.

0.10 

.05 

.70 

1.40 

.10 

.10 

.10

.03

.17 

.27

Mean.

0.32 

3.31 

5.90 

7.95 

.61 

.20 

.33

2.96 

3.54 

2.23

2.95

Run-off 

(total in 

million 

gallons).

10.00 

82.80 

183.00 

238.00 

18.90 

4.68 

2.97 

0.00 

0.00 

32.60 

91.90 

69.30

734.00
198 WATER RESOURCES OP HAWAII, 1912.

NEW HAMAKUA DITCH AT NAILIILIHAELE WEIR, NEAR HTTELO, MATTI.

Location. About 2 miles by trail south of Huelo post office, just before crossing of

Nailiilihaele Stream.

Records available. January 1, 1910, to December 31, 1912. 

Gage. A Friez automatic register.

Discharge measurements. By 17-foot Cippoletti weir. 

Cooperation. Weir is property of East Maui Ditch Co. Discharge copied from

records of Maui Agricultural Co.

Daily discharge, in million gallons, of New Hamakua ditch at Nailiilihaele weir, near

Huelo, Maui, for 1912.

Day.

1... ............

2... ............

3...............

4.... ...........

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

32.80

34.80

31.30

36.10

26.00

24.00

22.70

23.60

22.40

20.00

18.60

17.90

17.30

16.70

15.90

15.00

14.40

13.90

13.20

12.40

12.10

11.20

11.10

12.00

11.00

10.10

9.73

9.60

9.17

8.83

9.00

Feb.

9.12

8.70

8.52

8.23

7.85

7.60

7.43

14.80

26.60

11.10

9.80

9.66

31.90

17.90

12.50

11.10

10.60

9.73

27.40

55.60

55.20

54.70

48.30

41.90

40.80

56.00

55.80

Mar.

55.6

56.2

56.0

55.1

54.6

54.6

55.8

54.8

54.6

55.0

56.6

57.0

56.7

55.7

53.7

49.3

50.0

51.4

co q

48.3

41.8

38.9

tz o

51.8

56.2

55.6

51.4

34.8

en Q

56.3

Apr.

56.4

55.6

56.2

57.7

57.5

57.6

57.4

57.0

57.2

56.8

57.1

56.5

57.1

56.5

56.5

56.4

55.1

54.2

54.7

54.5

54.2

53.2

CO Q

EU 5

55.2

55.0

50.0

May.

38.0

39.0

39.7

50.8

53.0

48.0

39.8

47.4

37.2

32.9

30.2

28.0

26.2

26.0

23.2

21.7

20.6

20.4

21.6

18.0

16.5

18.0

15.8

25.4

40.6

26.4

1Q 8

18.1

June.

16.8

15.5

14.8

14.2

13.6

12.6

13.0

16.4

14.7

29.6

36.5

24.4

24.5

20.4

17.9

19.0

16.4

15.0

19.8

17 A

24.8

18.5

16.3

34.0

21.0

17 A

16.4

15.1

13.9

13.0

July.

14.1

15.2

17.3

22.4

19.7

16.4

15.3

22.1

39.8

24.6

23.8

21.2

24.5

21.3

17.7

16.2

14.9

14.0

12.9

12.0

11.6

12.2

10.4

15.0

13.4

12.4

13.5

14.3

15.9

12.7

11.2

Aug.

10.50

10.10

10.60

9.66

8.66

8.26

8.50

8.01

11.90

12.30

23.70

20.60

18.90

26.00

43.90

30.70

21.30

18.50

20.20

16.20

15.00

21.90

16.30

14.00

12.50

13.20

14.40

13.20

17.00

14.20

17.60

Sept.

18.20

45.40

48.60

46.90

34.70

40.20

53.90

38.00

29.70

25.70

23.00

21.20

19.60

16.90

14.90

14.00

12.70

12.20

11.90

11.80

10.90

9.97

9.33

8.80

8..S7

8.33

7.90

7.70

11.20

33.80

Oct.

16.7

22.2

16.9

12.2

10.7

10.0

10.1

10.6

18.4

15.9

13.8

16.1

20.8

51.4

38.0

25.4

21.2

17.8

16.2

20.2

50.4

55.8

55.4

53.8

43.9

45.1

56.1

56.4

53.4

55.0

56.4

Nov.

52.8

48.7

54.0

45.4

34.6

30.2

30.4

31.1

56.8

56.0

54.4

48.9

40.6

36.3

36.2

55.9

56.0

56.5

55.9

55.5

54.7

55.0

54.2

49.4

50.9

48.0

43.7

41.2

37.2

38.0

Dec.

53.9

60.1

62.2

56.9

56.7

55.0

53.7

47.9

42.7

39.4

35.1

32.4

30.7

31.7

30.5

44.2

35.0

49.1

53.1

41 7

45.8

46.1

46.6

46.2

46.2

46.5

46.3

46.1

45.4

45.8

45.0

Monthly discharge of New Hamakua ditch at Nailiilihaele weir, near Huelo, Maui, for

1912.

Month.

July......................................................

Discharge in million gallons.

Maximum.

36.1 

56.0 

57.0 

58. 3 

53.0 

36.5 

39.8 

43.9 

53.9 

56.4 

56.8 

62.2

62.2

Minimum.

8.83 

7.43 

34.80 

42.00 

15.80 

12.60 

10.40 

8.01 

7.70 

10.00 

30.20 

30.50

7.43

Mean.

17.5 

26.5 

52^0 

54.9 

29.3 

18.8 

17.0 

16.4 

18.8 

31.2 

47.0 

45.9

31.4

Run-off 

(total in 

million 

gallons).

543 

769 

1,610 

1,650 

908 

563 

528 

508 

656 

966 

1,410 

1,420

11,500
ISLAND OF MAtll. 199

NEW HAMAKUA DITCH AT HALEHAKU WEIR, NEAR HTJELO, MAUI.

Location. About 7 miles west of Huelo post office, 3J miles west of Lupi, and

just above crossing of Halehaku Stream. 

Records available. January 1,1910, to December 31,1912. 

Gage. Friez clock register.

Discharge measurements. By 25-foot Cippoletti weir. 

Channel. No velocity of approach; conditions good. 

Cooperation. Weir is property of East Maui Ditch Co.; discharge copied from

records of Maui Agricultural Co.

Daily discharge, in million gallons, of New Hamakua ditch at Halehaku weir, near Huelo,

Maui, for 1912.

Day.

1...............

2............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13............. .

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24........... ...

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

54.1

KA C

53.5

44.3

48 Q

46.1

44.4

46.8

44.2

39.3

37.2

35.5

34.6

33.3

31.8

29.5

28.4

97 o

26.0

Of, n

23 4

23.5

29.3

25.6

20.7

Id S

19.0 

20.1

Feb.

19.7

18.3

18.7

17.9

16.7

16.2

15.7

1Q A.

44.5

24.4

26.9

23.4

K.A A

44.9

30.6

26.6

94 ^

22.3

48.2

54.2

53.7

52.6

54.4

>U 7

52.9

CO A

*U 1

53.6

M 7

Mar.

55.8

53.7

54.0

54.2

CO Q

54.0

56.3

55.5

56.4

56.7

56.0

42.3

47.0

u *;

55.9

58.2 fft n

56.2

C7 A

58 9

61.8

C7 Q

K.Q s

fifl i

K.Q c.

58.2

CK A

55.0 

54.8

Apr.

55.2

M fi

55.5

CC A

55.0

55.6

EC 9

M A

55.0

EC 9

55.3 K.P; 7

cfi 9

55.8

55.9

^ fi

56.3

CQ Q

58.7

57.4

55.4

54.3

54.8

M i

54.0

53.2

52.5

May.

51.6

?.n 1

49.6

54.5

t& 7

55.7

53.3

53.6

53.9

50.9

M e.

51.9

dfi 7

42.3

40.0

37.7

36.8

36.8

40.6

36.8

32.3

29.8 vi n

36.0

44.0

55.1

50.0

43.0

June.

35.8

00 1

31.1

29.2

28.0

26.4

26.4

9Q ft

27.6

46.0

54.2

44.6

51.1

45.3

43.3

41 i

37.3

34.0

40.0

37.4

4O S

41.0

36.8

53.8

43.4

38.1

37.0

35.2

29.9

July.

32.2

42.9

55.7

49.5

40.2

36.0

37.6

56.7

50.1

54.3

47.1

50.6

48.1

40.7

37.6

34.5

32.2

30.3

28.8

30.4

27.5

25.8

40.2

36.1

31.3

31.0

31.6

35.0

29.8 

26.2

Aug.

24.5

23.5

24.0

22.6

21.1

20.1

21.6

20.9

33.0

30.3

48.1

40.8

07 I

41.1

61.6

co 7

41.3

36.6

36.6

31.6

9Q <?

42.5

32.5

27.6

25.3

26.1

27.2

25.6

34.4

39.1 

32.7

Sept.

32.8

58.7

54.1

57.1

CO Q

54.9

61.1

57.7

50.2

43.2

38.8

35.9

33.2

30.1

29.1

26.9

25.2

24.2

24.3

22.6

21.2

19.9

18.7

18.4

17.9

17.2

17.1

21.6

58.8

Oct.

35.3

A<y 9

38.3

25.8

22.2

20.6

21.0

20.9

27.6

27.6

23.2

26.6

59.8

56.7

45.2

41.9

31.3

28.2

30.9

 w *.

60.8

62.7

60.2

62.1

64.8

63.0

49.6

60.0

59.5 

68.9

Nov.

61.1

59.4

55.6

54.7

58.0

57.2

56.8

78.9

59.4

57.6

58.0

58.0

58.8

77.1

66.8

62.1

61.8

60.3

60.1

59.8

59.5

58.5

58.9

58.7

58.6

57.8

57.0

57.8

Dec.

61.9

C.A Q

45.2

52.4 fin ft

59.3

59.6

59.2

V7 7

56.7

^ 15

57.5

t& 7

58.1

57.2

62.2

63.5

61.7

59.2

63.2

60.6

65.5

59.4

58.7

59.2

58.6

58.3

57.4

57.8

Monthly discharge of New Hamakua ditch at Halehaku weir, near Huelo, Maui, for 1912.

Month.

March

April.... .................................................

May. .....................................................

July......................................................

N ovem oer ...............................................

The year. ........ ........ ...... ....................

Discharge in million gallons.

Maximum.

54.5 

54.7 

61.8 

59.8 

55.7 

54.2 

56.7 

61.6 

61.1 

68.9 

78.9 

65.5

78.9

Minimum.

19.0 

15.7 

42.3 

52.5 

29.8 

26.4 

25.8 

20.1 

17.1 

20.6 

54.7 

45.2

15.7

Mean.

33.6 

36.2 

56.0 

55.4 

45.5 

38.0 

38.3 

32.6 

35.0 

42.9 

60.3 

58.9

44.4

Run-off 

(total in 

million 

gallons).

1,040 

1,050 

1,740 

1,660 

1,410 

1,140 

1,190 

1,010 

1,050 

1,330 

1,810 

1,830

16,300
200 WATER RESOURCES OF HAWAII, 1912.

NEW HAMAKTTA DITCH AT STATION NO. 1, NEAR HTTELO, HAITI.

Location. About 1J miles south from Huelo post office at lower portal of first tunnel

west of Nailiilihaele Stream.

Records available. July 25 to December 31, 1912. 

Gage. A reference point, on top of cement-lined ditch, from which measurement

is made to surface of water; observations made twice daily, at 5.30 a. m. and 5.30

p. m.; datum, unchanged. 

Channel. Permanent.

Discharge measurements. Made from plank over ditch. 

Cooperation. Station maintained in cooperation with East Maui Ditch Co."

Discharge measurements of New Hamakua ditch at station No. linear Huelo, Maui, in

Date.

Nov. 11

Hydrographer.

.....do..................................................................

Gage 

height.

Feet. 

2.78

.12

Discharge.

Sec.-ft.

94.8

Daily gage height, in feet, of New Hamakua ditch at station No. 1, near Huelo, Maui, for

1912.

Day.

1. .........

3.......... 

4.......... 

5..........

6.......... 

7..........

8..........

9..........

10..........

12.......... 

13..........

14.......... 

15..........

July.

......

......

Aug.

2.82

2.75 

2.90 

3.00

3.50 

2.98 

3.25

2.25

1.25

1.35 

1.88

1.68 

.60

Sept.

2.20

3.25 

1.10 

1.10

.80 

.25 

1.10

.92 

1.72

1.95

2.08 

2.25

2.35 

2.42

Oct.

1.30

1 AK

2.15 

2.65 

2.85

2.91 

2.90 

2.95

2.35 

2.22

2.75

3.55 

2.65

1.00 

.90

Nov.

0.10 

.10

.10 

.20 

.40

1.25 

1.25 

1.30

.10 

.10

.10

.10 

.50

.80 

1.05

Dec.

0.15 

.10

.15 

.10 

.10

.15 

.20 

.40

.50 

.55

.85

1.05 

1.10

1.30 

1.00

Day.

16.......... 

17..........

18.......... 

19.......... 

20..........

21.......... 

22.......... 

23..........

24..........

25..........

26..........

27..........

28..........

29.......... 

30.......... 

31..........

July.

~2.~26"

2.52

2.38 

2.35

2.10 

2.52 

2.65

Aug.

1.32

1.82

2.02 

2.22 

2.38

2.48 

2.22 

2.35

2.52 

2.65

2.58

2.52 

2.65

2.00 

2.10 

2.12

Sept.

2.50 

?,. 55

2.70 

2.70 

2.75

2.80 

2.85 

2.95

3.00 

3.50

3.10

3.12 

3.10

3.05 

1.60

Oct.

1.46 

2.05

2.30 

2.50 

2.45

.10 

.10 

.10

.10 

.20

.35

.10 

.10

.10 

.10 

.10

Nov.

0.10 

.10

.10 

.10 

.10

.10 

.10 

.10

.10 

.15

.20

.35

.45

.65 

.40

Dec.

1.15 

.25

.12 

.25 

.10

.20 

.25 

.70

.85 

.55

.50

.45 

.35

.40

.40

.45

NEW HAMAKUA DITCH AT STATION NO. 2, NEAR HTTELO, HAITI.

Location. About 1J miles south of Huelo post office at upper end of iron flume

crossing Kailua Stream.

Records available. January 14 to December 31, 1912. 

Gage. A reference point on top of cement-lined ditch, from which measurements

are made to surface of water twice daily, at 6.30 a. m. and 4.30 p. m.; datum

unchanged.

Channel. Permanent.

Discharge measurements. Made from flume covering. 

Cooperation. Station maintained in cooperation with East Maui Ditch Co.
ISLAND OF MAUI. 201 

Daily gage height, in feet, of New Hamakua ditch at station No. 2, near Huelo, Maui, for

Day.

1..... ..........

2...............

3...............

4...............

5...............

6.............^.

7...............

8...............

9.. .............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

2.26

2 34

2.42

2.48

2.55

2.60

2.67

9 79

2.75

2.80

O QQ

2.66

2.82

2.88

2.96

2 OQ

3.02 

2.95

Feb.

3.00

3 AC

3.05

3.11

1 1A.

3.20

3.21

1.20

2.74

2.42

2.79

.44

1.48

2

Q7

2.61

9 79

2.32

.70

.05

.06

.10

.12

19

.14

48

04

.12

19

Mar.

0.08

.06

.06

.10

19

.10

.08

.10

no

.05

.06

.04

.08

.10

19

.14

.08

.08

11

.14

It

.18

.22

44ni

00

rt9

.06

CO

.02 

.06

Apr.

0.04

.09

.03

.03

04

.06

.09

08

08

04

no

.08

.08

.08

.11

.08

11

.14

.10

.07

.14

.11

.12

19

.10

.08

.10

.15

.14

.27

May.

0.36

.20

.25

.18

.14

.20in

OQ

.28

.57

91

.15

1 oa

1 in

1 79

1 60

1 91

1

QC

1 7Q

1 80

2

rto

2

oc

2.20

2 99

1 99

1 QQ

1.08

QC

1.55 

1.55

June.

2.25

2

10

2.28

2.35

2.42

9 K9

2.45

2

Af\

2.38

lit

.08

1.50

1 dift

I

qc

1.48

1.28

1

7Q

2

AA

1.48

1

QQ

1.62

1 AC

2 1 9

1 £9

1.80

1 Q8

9 nn

1

PTO

1.80

July.

2.22

1.75

1 99

.80

1 1Q

1.68

1.88

1.68

.38

1.02

Q9

1.50

1 ft9

1 7Q

2

rtO

9 QA

2.18

2

QO

2 OK

2

QQ

2.48

95

2 no

1 95

2.22

1 7Q

1.82

1.72

1.78 

1.82

Aug.

2.25

9 Qft

2

09

2.58

2.62

9 79

2.78

2

QQ

2.68

2.60

.78

1 39

1.42

.55

OQ

A9

QO

1 99

1.12

1.22

1

QQ

1 Q9

1 AO

1.58

2

ftC

O Of)

9 Q9

9 A9

1

f*t\

2.02

2

(\K

Sept.

1.98

1 Wl

.18

.12

.72

48

.15

.45

1.48

1.42

1.80

1.88

1 7fi

2

i«)

9 ^9

9 QC

9 4*

2.55

2

Kft

2

*&

2 ft9

2.80

2

00

2 on

2

QC

9 on

9 Q9

2

00

.50

Oct.

1.52

1.45

1.71

2.21

9 11

2.81

2.90

2.81

2.45

2.35

2.65

2.40

2.20

.20

OK

1.32

1.70

2.05

S

ort

2.15

.20

.20

.20

.15

.10

.20

.10

.10

.20

.20 

.20

Nov.

0.20

.20

.20

.30

.30

1.00

.85 i no

.20

.20

.20

.20

.30

40

7t

.15

.10

.10

.10

.10

.15

.15

.20

.20

.20

.20

.30

.30

4t

.50

Dec.

0.15

.10

.15

.10

.10

.15

.20

.25

.30

.35

.50

.65

.85

.75

.85

.10

.85

.25

.20

.35

.49

.50

.60

.50

.45

,35

.35

.20

.30

.25 

25

NEW HAHAKUA DITCH AT STATION NO. 3, NEAR HTTELO, HAUL

Location. About 1J miles south of Huelo post office, at lower end of iron flume 

crossing Kailua Stream.

Records available. January 14 to December 31, 1912.

Gage. A reference point, on top of cement-lined ditch, from which distance to 

water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum 

unchanged.

Channel. Permanent.

Discharge measurements. Made from plank over ditch. During low stages the 

flow at station No. 2 is the same as that of No. 3. During high stages, in order to 

determine the amount of water overflowing the sides of the iron flume and dropping into Kailua Stream, it is necessary to measure the ditch above and below 

this flume.

Cooperation. Station maintained in cooperation with East Maui Ditch Co.

Discharge measurements of New Hamakua ditch at station No. 3, near Huelo, Maui, in

191%.

Date.

July 23

Sept. 21

Nov. 11

Hydrographer.

J. B . Stewart. ............................................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet. 

2.57

2.69

Discharge.

Sec.-ft. 

25.3

23.5

86.2

<* Gage-height reference mark.
202 WATER RESOURCES OF HAWAII, 1915.

Daily gage height, in feet, of New Hamakua ditch at station No. 3, near Huelo, Maul,

for 1912.

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22. ..............

23...............

24...............

25...............

26...............

27...............

28. ..............

29...............

30...............

31...............

Jan.

2.30

2.38

2.48

2.51

2.57

2.62

2.70

2.72

2.78

2.80

2 42

2.68

2.84

2.92

2.98

3.02

3.05

2.98

Feb.

3.04

3.11

3.09

3.12

" 3.18

3.23

3.25

3.20

1.25

2.75

2.46

2.83

.46

" 1.51

2.40

2.64

2.76

2.86

.72

.08

.10

.14

.16

.16

.18

.50

.07

.14

.16

Mar.

0.10

.10

.08

.12

.15

.14

.12

.14

.11

.08

.09

.07

.10

.12

.14

.16

.10

.10

.16

.16

.18

.20

.25

.47

.06

.00

.05

.08

.62

.04

.10

Apr.

0.08

.12

.06

.05

.07

.08

.12

.12

.12

.06

.12

.10

.12

.10

.14

.11

.16

.16

.12

.10

.16

.14

.14

.22

.12

.10

.14

.18

.18

.28

May.

0.31

.26

.24

.14

.15

.21

.35

.29

.28

1.64

1.28

1.20

1.32

1.35

1.61

1.72

1.78

1.80

1.78

1.88

1.88

2.18

1.92

2.02

2

QO

1.68

1.52

.88

.50

.34

1 79

June.

1.98

2.12

2.25

2.30

2.38

2.48

2.45

" 2.30

2.42

2.10

2.08

1.55

1.40

1.40

1.58

1.35

1.83

2.05

1.52

1.95

.80

1.68

2.00

.82

1.58

1.85

2.02

2.05

2.30

2.32

July.

2.08

1.80

1.35

1.98

1.22

1.72

1.98

1.72

.42

1.08

.98

1.55

1.08

1.65

1.82

2.25

2.12

2.25

2.52

2.22

1.82

2.42

2.52

1.00

1.72

4.68

1.85

1.90

1.82

1.88

1.98

Aug.

2.30

2.18

2.32

2.62

2.68

2.78

2.88

2.98

2.72

2.78

.82

1.38

1.52

.62

.48

.70

.88

1.30

1.32

1.30

1.42

1.42

1.52

1.62

2.08

2.38

2.38

2.48

1.68

2.12

2.12

Sept.

1.09

.75

.30

.18

.80

.52

.18

.48

1.98

.95

1.68

1.85

1.92

1.80

2.18

2.35

2.38

2.52

2.55

2.55

' 2.62

2.78

2.82

2.88

2.90

2.90

2.95

2.98

2.95

.55

Oct.

1.60

2.25

1.80

2.50

2.36

2.91

2.92

2.85

2.90

2.85

2.70

2.60

2.20

.20

.25

1.32

1.75

2.05

2.30

2.25

.20

.20

.20

.20

.20

.15

.10

.10

.20

.20

.20

Nov.

0.20

.20

.20

.30

.60

1.00

.85

1.00

.20

.20

.20

.20

.30

.40

.75

.15

.10

.10

.10

.10

.15

.20

.20

.20

.20

.20

.30

.30

.55

.60

Dec.

0.15

.10

.15

.10

.20

.25

.20

.30

.40

.35

.60

.85

.75

.85

.20

.85

.85

30

.30

.45

.45

.50

.50

.50

wi

.35

.35

.20

.30

.25

.35

NEW HAMAKUA DITCH AT STATION NO. 4, NEAR HUELO, MAUL

Location. About 1^ miles south of Huelo post office and immediately above flume

crossing Oanui Gulch.

Records available. January 14 to December 31, 1912. 

Gage. A reference point, chiseled in cement lining of ditch, from which distance

to water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum

unchanged. 

Discharge measurements. Made from plank over flume. The difference

between the flow at stations No. 4 and No. 3 gives low-water flow of Kailua

Stream. 

Cooperation. Station maintained in cooperation with East Maui Ditch Co.

Discharge measurements of New HamaJcua ditch at station No. 4, near Huelo, Maui, in

1912.

Date.

July 23

Nov. 11

Hydrographer.

.....do....................................................................

Gage 

height.

Feet. 

4.90

2.52

Discharge.

Sec.-ft. 

29.7

86.2
ISLAND OP MAUI. 203

Daily gage height, in feet, of New Hamakua ditch at station No. 4, near Huelo, Maui,for

1912.

Day.

1...............

1. ....... .......

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21.... ...........

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

4.70

4.78

4.82

4.90

4.97

5.04

5.10

5.24

5.20

5.22

4.82

5.09

5.25

5.34

5.38

5.42

5.44

5.38

Feb.

5.42

5.50

5.47

5.50

5.56

5.55

5.58

5.52

3.66

5.14

4.84

5.20

2.90

3.92

4.78

5.15

5.12

5.22

3.18

2.50

2.56

2.64

2.60

2.60

2.18

2.98

2.54

2.62

2.58

Mar.

2.52

2.50

2.48

2.55

2.64

2.56

2.54

2.56

2.52

2.54

2.52

2.51

2.58

2.61

2.60

2.66

2.58

2.56

2.60

2.58

2.62

2.64

2.70

2.91

2.51

2.46

2.50

2.54

3.07

2.51

2.54

Apr.

2.48

2.54

2.46

2.48

2.48

2.48

2.58

2.54

2.55

2.42

2.52

2.52

2.58

2.52

2.58

2.51

2.62

2.60

2.55

2.50

2.60

2.56

2.57

2.64

2.53

2.52

2.54

2.60

2.58

2.70

May.

2.90

2.50

2.70

2.58

2.60

2.66

2.82

2.68

2.95

3.10

3.38

3.58

3.72

3.78

4.05

4.32

4.42

4.35

4.32

3.65

4.25

4.40

4.68

4.50

4.68

4.55

2.95

3.62

4.28

3.40

4.08

June.

4.42

4.42

4.48

4.72

4.85

4.90

4.88

4.65

4.80

3.55

3.08

4.15

3.32

3.92

4.02

3.90

4 OK

4.45

3.90

4.32

3.72

4.05

4.38

2.95

3 Qo

4.25

4 08

4.32

4.58

4.68

July.

4.50

4.28

3.80

2.92

3.62

4.30

4.28

4.30

3.38

4.05

3.35

3.90

3.55

4.08

4.22

4.38

4.38

4.48

4.58

4.72

4.65

4.80

4.82

3.75

4.35

2.28

4.55

4.55

4.32

4.42

4.58

Aug.

4.45

4.62

4 80

4.88

4.92

4.98

5.17

5.22.

4.48

4.25

3.65

3.70

3.78

3.62

3.50

3.20

3

CQ

3.72

3.68

3.78

3.88

3.62

3.72

3.88

A OK

4.68

4 88

4.98

4.00

4.42

4.32

Sept.

4.32

2.40

2.68

2.55

3.10

2.85

2.48

3.10

3.35

3.75

3.98

4.12

4.28

4.32

4.42

4.62

4.62

4.68

4.72

4.75

4.82

4.88

5.10

5.22

5.38

5.35

5.40

5.45

5.42

3.00

Oct.

4.05

3.70

4.20

4.70

4.81

5.15

5.11

5.11

4.60

4.75

5.55

4.85

4.65

2.65

2.70

3.80

4.30

4.60

4.80

4.65

2.65

2.65

2.60

2.60

2.60

2.65

2.60

2.60

2.60

2.60

2.60

Nov.

2.60

2.60

2.60

2.70

3.15

3.35

3.50

2.60

2.60

2.60

2.60

2.75

2.80

3.20

2.50

2

Kfl

2.55

2.60

2.60

2.60

2.60

2.60

2.60

2.60

2.60

2.70

2.70

2.95

2.55

Dec.

2.60

2.60

2.65

2.60

2.60

2.65

2.60

2.65

2.80

2.85

2.90

3.05

2.75

3.15

3.25

2.60

3.25

2.60

2.60

2.75

2.85

2.90

2.90

2.90

2.80

2.75

2.60

2.55

2.70

2.65

2.65

NEW HAMAKUA DITCH AT STATION NO. 5, NEAR HUELO, MAUI.

Location. About 1J miles south of Huelo post office and immediately below flume

crossing Oanui Gulch.

Records available. January 14, to December 31, 1912. 

Gage. A reference point, chiseled in cement lining of ditch, from which distance

to water surface is measured twice daily, at 6.30 a. m. and 4.30 p. m.; datum

unchanged.

Channel. Cement lined; permanent. 

Discharge measurements. Made from plank at reference point. Difference

between flow at this station and station No. 4 equals the low-water flow of Oanui

Stream. 

Cooperation. East Maui Ditch Co. assists in. obtaining gage heights.

Discharge measurements of New Hamakua ditch at station No. 5, near Huelo, Maui, in

1912.

Date.

July 23

Sept. 21

Nov. 11

Hydrographer.

J. B. Stewart.............................................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet. 

5.00

5.10

2.68

Discharge.

Sec.-ft. 

33.3

30.6

111
204 WATER EESOUECES OP HAWAII, 1912,

Daily gage height, in feet, of New Hamakua ditch at station No. 5, near Huelo, Maui,for

1912. ^f"

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

oo

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

4.80

4.88

4.92

5.00

5.07

5.12

5.20

5.23

5.28

5.31

4.87

5.18

5.35

5.41

5 46

5.47

5.50

5.47

Feb.

5.50

5.56

5.56

5.60

5.66

5.65

5.68

5.61

3.76

5.24

4.94

5.30

3.02

4.02

4.88

5.05

5.22

5.32

3.28

2.64

2.66

2 7fl

9 7A

2.72

2.78

3.10

2.68

2.72

2.70

Mar.

2.66

2.65

2.62

2.68

9 79

2.69

2.67

2.69

2.66

2.66

2.66

2.64

2.68

2.71

2.72

2.74

2.68

2.66

2.72

2.70

2.73

9 77

2.82

3.04

2.64

2.68

- 2.62

2.66

3.18

2.62

2.67

Apr.

2.62

2.67

2.64

2.64

2.66

2.63

2.68

2.64

2.68

2.58

2.66

2.63

2.70

2.63

2.70

2.64

2.72

2.70

2.68

2.64

2.72

2 7ft

9 7ft

2.77

2.66

2.65

2.68

2.72

2.78

2.82

May.

2.86

2.18

2.85

2.65

2.70

2.65

2.82

2.72

2.90

3.12

3.48

3.68

3.85

3.82

4.10

4.20

4.28

4.42

4.42

4.02

4.38

4.58

4.75

4.35

4.78

4.12

3.05

3.70

3.52

4.05

4.42

June.

4.45

4.62

4.78

4.82

4.92

4.98

4.98

4.75

4.90

3.65

4.18

4.28

3.42

4.15

4.12

3.85

4.32

4.32

4.00

4.42

3.42

4.35

4.48

3.05

3.98

4.30

4JC2

4.32

4.41

4.78

July.

4.60

4.38

3.90

3.02

4.12

4.40

4.12

2.98

3.65

3.45

4.22

3.65

4.18

4.32

4.48

4.55

4.58

4.68

4.82

4.75

4.90

4.90

3.85

4.22

4.75

4.65

4.65

4.38

4.50

4.62

Aug.

4.62

4.72

4.90

4.98

5.25

5.12

5.22

5.32

4.55

4.38

3.70

3.88

3.92

3.72

3.10

3.55

3.70

3.75

3.75

3.88

4.25

3.52

3.80

4.22

4.45

4.72

4.95

5.30

4.08

4.58

4.32

Sept.

4.42

2.25

2.75

2.62

3.30

3.15

2.52

2.95

3.36

3.85

4.05

4.18

4.32

4.38

4.62

4.68

4.68

4.72

4.78

4.80

4.87

5.16

5.32

5.42

5.40

5.45

5.50

5.48

3.05

Oct.

4.30

3.72

4.46

4.76

4.96

5.17

5.20

5.20

4.85

4.30

5.15

4.90

4.75

2.08

3.30

3.90

4.25

4.60

4.30

4 80

2.65

2.65

2.60

2.60

2.70

2.75

2.70

9 fin

2.60

2.60

9 fin

Nov.

2.60

2.60

2.70

3.70

3.45

3.45

3.60

2.60

2.60

2.60

2.60

2.60

2.75

2.85

3.30

2.50

2.50

2.50

2.55

2.60

2.60

2 fin

2 60

2.60

2.60

2.60

2.60

9 sn

2.60

3.05

Dec.

2.60

2.60

2.65

2.60

9 fin

2.65

2.65

2.85

2.90

2.95

3.00

3.15

3.35

3.25

3.25

2.60

3.35

2.70

2.70

2.85

2.95

3.00

3.00

3.00

3.10

2.85

2.85

9 fiR

2.80

2.75

2.75

OLD HAMAKUA DITCH AT OPANA WEIR, NEAR HUELO, MAUL

Location. About 5 miles northwest of Huelo post office and a short distance below

the crossing of Opana Stream.

Records available. January 1, 1910, to December 31, 1912. 

Gage. Friez automatic clock register. 

Discharge measurements. By a Cippoletti weir. 

Cooperation. Weir is the property of the East Maui Ditch Co.; records copied from

Maui Agricultural Co.

Daily discharge, in million gallons, of Old Hamakua ditch at Opana weir, near Huelo,

Maui, for 1912.

Day.

1............... 

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

9............... 

10...............

Jan.

0.70 

.70

.70

.67

.55

.55 

.46

.50

.55 

.93

Feb.

0.30 

.30

.25

.20

.20

.13 

.10

3.83

5.03 

.33

Mar.

24.60 

26.80

27.10

27.30

26.10

24.70 

23.60

20.40

22.20 

21.40

Apr.

9.45 

8.30

22.20

23.70

25.00

27.50 

28.10

20.10

26.50 

28.00

May.

17.80 

18.00

14.70

16.70

16.20

15.90 

13.00

13.90

8.16 

2.73

June.

0.60 

.60

.45

.40

.40

.40 

.40

40

.30 

4.13

July.

0.30 

.30

.30

1.93

1.23

.40

.40

9 ftft

11.90 

1.80

Aug.

.......

.......

Sept.

"2."76"

8.53

6.86

.86

.80 

4.21

.83

.13

Oct.

.......

.......

.......

Nov.

18.00 

13.80

18.70

16.40

11.50

2.26 

.60

1.73

28.50 

28.40

Dec.

18.40 

26.70

35.30

18.00

18.30

18.80 

21.10

16.70

14.10 

12.70
ISLAND OP MAUL 205

Daily discharge, in million gallons, of Old Hamdkua ditch at Opana weir, near Hudo, 

Maui, for 1912 Continued.

Day.

11...............

12............... 

13...............

14...............

15...............

16............... 

17...............

18...............

19............... 

20...............

21............... 

22............... 

23...............

24...............

25...............

26............... 

27...............

28...............

29............... 

30...............

31...............

Jan.

0.43 

.40 

40

.40

.36

.30 

30

.30

.37 

.47

.27 

.20 

.23

.43

.30

.25 

.30

.35

.40 

.35

.30

Feb.

0.30 

.30 

i w

4.83

.47

.23 

30

.50 

11.10 

25.90

25.10 

26.80 

19.80

16.00

15.40

13.70 91 nn

26.90

24.20

Mar.

25.10 

26.30 

97 iai

27.10

22-30

17.30 

19 60

25.30 

19.60

7 Qf\

16.20 

13.90 

10.30

5.30

7.37

10.80 

8.13

7 73

6.20 

16.80

OC QA

Apr.

27.20 

26.90 

26.10

26.90

27.00

27.40 

27.60

23.00 

19.00 

23.40

24.40 

23.40 

23.50

25.10

16.70

26.30 

25.20

21.90

19.20 

16.60

May.

1.30 

1.20 

.70

.60

.60

.60 

.60

.60 

.60 

.60

.60 

.60 

.60

.60

.55

.52

8.86

6.00

3.30 

.80

.70

June.

2.83 

.70 

1.63

.53

.33

.40 

.40

.40 

.40 

.40

.70 

.63 

.40

9.43

.67

.40 

.30

.20

.20 

.30

July.

1.80 

.45 

1.27

.30

.25

.20 

.20

.20 

.20 

.10

.10 

.15 

.10

.10

.10

.15 

.10

.10

.10 

.10

.10

Aug.

0.96

2.63

.15 

.20

.20 

.08

.05

Sept. '

.......

.......

Oct.

.......

.......

-------

7.03 

13.20 

1.97

3.80

3.13

5.87 

23.70

25.60

15.30 

16.10

26.80

Nov.

25.80 

13.80 

11 40

9.23

27.50

27.30 

27.20

27.80 

27.50 

25.30

17.30 

16.00 

16.70

14.30

14.80

13.10 

12.20

11.70

8.95 

10.70

Dec.

9.97 

5.60 

1.16

.30

.77

5.27 

4.10

10.70 

23.40 

15.80

23.30 

27.60 

27.00

25.70

21.60

25.80 

20.20

19.30

15.90 

15.80

14.60

Monthly discharge of Old Hamakua ditch at Opana weir, near Huelo, Maui, for 1912.

Month.

April.............:.......................................

July.....................................................

September ...............................................

October. .................................................

The period. ........................................

Discharge in million gallons.

Maximum.

0.93 

26.90 

27.50 

28.10 

18.00 

9.43 

11.90 

2.63 

8.53 

26.80 

28.50 

35.30

35.30

Minimum.

0.20 

.10 

5.30 

8.30 

.52 

.20 

.10 

.05 

.13 

1.97 

.60 

.30

.05

Mean.

0.43 

8.59 

19.00 

23.20 

5.41 

.98 

.86 

.61 

3.11 

13.00 

16.60 

16.60

8.36

Run-off 

(total in 

million 

gallons).

13.40 

249.00 

591.00 

696.00 

168.00 

29.30 

26.70 

4.27 

24.90 

142.00 

498.00 

514.00

2,510.00

KALUANUI DITCH AT PTTUOMALEI, NEAR HAMAKUAPOKO, MAUI.

Location. About 3 miles east of Paia, in Hamakuapoko, just west of Maliko Gulch.

Records available. January 1,1910, to December 31, 1912.

Discharge measurements. By 6-foot sharp-crested weir with bottom and end

contractions. 

Copperation. Weir is the property of the East Maui Ditch Co., but records are

copied from records kept by Maui Agricultural Co.
206

Daily discharge, in million gallons, of Kaluanui ditch at Puuomalei, near Hamakuapoko, Maui, for 1912.

Day.

1...............

o

i::::::::::::!::

4............... 

5...............

6...............

7.-.--..........

8...............

9...............

10. ..............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19. ..............

20. ..............

21...............

22. ..............

23............... 

24. ..............

25. ..............

26...............

27...............

28...............

29...............

so. ..:...........

31...............

Jan.

4.56

4 56

4.56

4.03 

4.03

4.03

3.51

3.51

3.51

3.51

2.95

2.95

2.95

2.95

2.50

2.50

2.50

2.50

2.50

2.50

2.50 

2.95

2.95

2.50

2.50

2.50

2.50

2.50

Feb.

3.51

2.10

1.85 

2.02

2.02

2.80

3.30

3.00

3.00

2.50

2.00

2.02

2.02

2.02

2.30

3.51

2.?0

3.00

3.00

3.30

3.50 

3.50

3.50

3.50

3.50

3.50

3.50

Mar.

3.51

3

C1

3 *1

3.51 

3.51

3.51

3

ei

3 *1

3.51

3.51

3.51

3.51 * s;l

3.51

3.51

3.51

3.51

3.51

4.56

A Cfl

4.56

4.56 

4.56

4.56

4

cfi

4.56

4.56

Apr.

4.56

4 56

4 56

4.56 

4.56

4.56

4

R(\

4.56

4.56

4.56

4.56

4.56

4.56

4.56

4.56

4.56

4 56

4.56

A KR

3.51

3.51

3.51

3.51

3

C1

3.51

3.51

3

C1

May.

3.51

3.50

3.50

3.50 

3.50

3.50

3.50

3.50

4.03

4.03

4.03

4.03

2.96

2.60

2.60

2.60

2.60

2.f,0

2. CO

2.60

2.96

2.50

2.50 

2.50

2.50

2.50

2.50

2.50

2.50

2.50

June.

2.50

2.50

2.50

2.50 

2.50

2.02

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.50

2.02

1.61

.86

.86 

.86

.86

.86

.86

.86

.86

.86

July.

0.86

.86

1.24

1.24 

1.24

1.24

.86

1.24

1.24

.86

1.24

1.24

1.24

1.24

1.24

1.24

1.24

1.24

1.24

.86

.87

.87

.87 

.87

.87

.87

.87

.87

.87

.87

.87

Aug.

0.83

.83

.83

.83 

.83

.61

.61

.61

.61

.29

.29

.29

.29

.29

.29

.29

.29

.61

.61

.61

.83

.83

.29 

.29

.29

.29

.29

.29

.61

.61

.83

Sept.

2.50

2.50

2.50

2.50 

2.50

2.50

2.50

2.50

2.50

1.61

1.61

1.24

1.24

1.24

1.24

.32

.32

.32

.32

.32

.32

.32

.32 

.32

.32

.32

.32

.32

.32

.32

Oct.

2.03

1.61

1.61

1.24 

1.24

1.24

.32

.32

.32

.32

.32

.32

1.61

2.01

2.01

1.61

.86

.86

.86

2.50

2.50

3.51

3.51 

3.51

3.51

3.51

3.51

3.51

3.51

3.51

3.51

Nov.

3.50

3.20

2.70

2.37 

2.43

2.38

2.10

2.47

3.43

3.63

3.93

3.83

3.53

3.50

3.50

3.50

3.50

3.50

3.50

3.50

3.50

3.70

3.97 

4.00

3.80

3.53

3.50

3.50

3.47

3.47

Dec.

3.51

3.60

3.97

4.03 

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03 

4.03

4.03

4.03

4.03

4.03

4.03

4.03

4.03

Monthly discharge of Kaluanui ditch at Puuomalei, near Hamakuapoko, Maui, for 1912.

- Month.

July.....................................................

November.. ....................... ..... . .... ..

Discharge in million gallons.

Maximum.

4.56 

3.51 

4.56 

4.56 

4.03 

2.50 

1.24 

.83 

2.50 

3.51 

4.00 

4.03

4.56

Minimum.

2.50 

1.85 

3.51 

3.51 

2.50 

.86 

.86 

.29 

.32 

.32 

2.10 

3.51

.29

Mean.

3.11 

2.83 

3.95 

4.24 

3.01 

1.95 

1.05 

.52 

1.18 

1.96 

3.35 

4.00

2.59

Run-off 

(total in 

million 

gallons).

96.5 

82.1 

122.0 

127.0 

93.2 

58.4 

32.5 

16.2 

35.5 

60.8 

100.0 

124.0

947.0
ISLAND OP MAUL 207

LOWRIE DITCH AT OPANA WEIR, NEAR HTTELO, MATTI.

Location. About 4 miles northwest of Huelo post office and a short distance west

of Halehaku Gulch.

Records available. January 1, 1910, to December 31, 1912. 

Gage. Friez automatic clock register.

Discharge measurements. By sharp-crested weir 16J feet long, with, bottom and 

p end contractions. 

Cooperation. Weir is the property of East Maui Ditch Co., but records are copied

from records of the Hawaiian Commercial Sugar Co.

Daily discharge, in million gallons, of Lowrie ditch near Huelo, Maui, for 1912.

Day.

1....... ........

2...............

3...............

4. ..............

5...............

6...............

T.... ...........

8.... ........... 

9...............

10. ..............

11...............

12...............

13...............

14. ..............

15...............

16. ..............

17...............

18...............

19. ..............

20. ..............

21...............

22...............

23...............

24...----........

25. ..............

26. ..............

27...............

28. ..............

29...............

30...............

31...............

Jan.

50.20

51.60

49.60

44.20

40.10

39.40

42.70

45.20 

45.10

39.70

36.30

34.20

32.50

31.30

9Q M\

27.80

26.50

24.50

23.50

22.90

21.00

29.40

22.10

20.30

19.20

18.50

17.80

20.00

Feb.

19.70

17.20

17.00

16.70

15.70

15.40

15.00

21.80 

50.00

30.20

27.70

29.60

47.50

45.60

41.90

28.40

25.90

45.40

50.20

55.40

55.90

52.30

52.30

52.50

50.10

58.10

56.90

51.00

.......

Mar.

55.80

56.30

53. f.O

52.00

52.90

52.20

52.30 

53.70

53.20

55.70

57.60

57.20

55.10

53.50

54.10

55.00

54.00

54.70

54.20

54.20

52.70

3.03

.90

.70

.76

9.83

51.70

54.00

55.50

Apr.

55.10

55.20

55.20

57.10

9.60

1.33

39.10

51.50 

58.10

58.00

57.90

58.80

57.90

29.80

57.70

58.20

57.20

56.90

56.60

57.10

57.60

57.80

58.10

57-70

57.70

57.30

57.20

56.90

56.70

May.

53.10

53.10

53.30

53.30

53.30

53.20

53.30

56.00 

52.80

51.30

52.50

48.00

45.60

44.40

40.30

37.30

35.70

34.00

36.40

42.60

39.50

31.60

28.60

34.90

29.80

38.70

55.20

52.10

49.10

49.00

44.90

June.

36.30

34.00

31.10

29.00

27.10

25.70

26.30

34.10 

31.40

48.20

54.60

48.80

53.60

49.90

48.40

50.00

42.60

36.10

43.30

40.80

51.80

42.60

35.90

52.70

45.40

40.80

37.40

42.70

31.60

28.90

July.

33.80

41.50

51.70

52.70

51.80

43.80

40.20

36.60 

55.00

48.60

49.50

46.50

52.50

50.00

47.20

41.20

36.70

34.50

32.70

29.60

31.60

28.80

26.10

43.00

34.40

33.40

36.00

34.80

31.00

26.40

Aug.

24.20

22. SO

24.10

21.80

19.30

17.90

19.70

18.30 

39.00

38.50

50.80

46.60

43.00

45.70

54 40

51.90

46.10

45.10

16.20

33.40

30.20

49.50

39.40

30.00

26.00

26.60

29.30

26.40

40.40

34.70

39.40

Sept.

38.80

52.70

55.90

53.50

51.70

51.90

55.50

53.00 

50.90

43.10

37.30

33.70

30.30

27.70

25.90

24.40

23.50

21.80

20.70

21.30

20.10

18.20

17.50

18.90

16.00

15.90

15.30

14.80

17.40

49JBO

Oct.

41.90

39.10

41.70

28.80

23.00

19.80

20.00

20.70 

23.00

31.30

22.60

40.40

42.70

54.40

48.60

46.90

35.20

28.30

30.90

53.60

56.50

53.40

53.50

54.00

63.80

56.80

56.00

55.30

56.50

57.20

Nov.

55.60

56.30

56.60

56.00

54.20

53.60

55.40

55.30 

57.30

56.70

56.30

55.20

55.60

55.60

54.70

57.20

56.30

54.10

57.30

57.70

w w

57.10

56.80

56.60

56.30

56.10

56.30

55.40

55.00

Dec.

57.80

61.10

56.40

45.50

52.30

47.90

47.30

50.10 

45.10

42.60

47.40

44.70

49 40

52.00

Cft Cft

54.60

54.10

55.10

57.40

56.10

57.50

57.40

57.10

57.00

57.00

57.00

56.70

56.80

56.40

56.20

56.20

Monthly discharge of Lowrie ditch near Huelo, Maui, for 1912.

Month.

April.....................................................

May.....................................................

July.....................................................

October. .................................................

Discharge in million gallons.

Maximum.

51.60 

58.10 

57.60 

58.80 

56.00 

54.60 

55.00 

54.40 

55.90 

57.20 

57.70 

57.80

58.80

Minimum.

17.80 

15. 00 

.70 

1.33 

28.60 

25.70 

26.10 

16.20 

14.80 

19.80 

53.60 

42.60

.70

Mean.

31.7 

36.9 

46.0 

52.1 

45.3 

40.0 

40.1 

33.9 

32.6 

41.9 

56.0 

53.3

42.5

Run-off 

(total in 

million 

gallons) .

982 

1,070 

1,430 

1,560 

1,400 

1,200 

1,240 

1,050 

978 

1,300 

1,680 

1,650

15,500
208 WATEK BESOTJRCES OF HAWAII, 1912. 

HAIKU DITCH AT PEAHI WEIR, NEAR HUELO, HAUL

Location. In Peahi about 5 miles northwest of Huelo post office.

Records available. January 1,1910, to December 31, 1912.

Gage. Friez automatic clock register.

Discharge. Measured by sharp-crested weir, 16J feet long, with bottom and end

constructions. 

Cooperation. Weir is property of East Maui Ditch Co.; discharge records are

copied from records of Hawaiian Commercial & Sugar Co.

Daily discharge, in million gallons, of Haiku ditch at Peahi weir, near Huelo, Maui, for

1912.

Day.

1............... 

2...............

3...............

4.............:. 

5...............

6...............

7............... 

8.... ...........

9............... 

10...............

11...............

12...............

13............... 

14...............

15...............

16...............

17............... 

18...............

10

20...............

21...............

22...............

23...............

24...............

OR

26...............

27...............

28............... 

29...............

30...............

31...............

Jan.

40.30 

40.30

34.80

27.00 

36.90

23.00

18.70 

9.23

3. 83 

3.73

2.96

2.53 

2.63 

3.10

3.10

.63

1.90 

3.75

2.00

2.00

2.00

1.97

1.83

2.63

1 O7

1.90

I

CO

1.83 

1.83

1.83

2.00

Feb.

2.00 

1.95

1.90

1.63 

1.33

1.10

1. 10

8.97

35. 80 

5.30

5.17

3.60 

30.90 

34.90

20.20

4.93

3.15 

3.03

30.80

52.10

53.20

53.30

53.30

KO Oft

36.20

53.20

53.30 

53.40

-------

Mar.

53.30 

53.30

53.30

53. 30 

53.30

53.30

53.30 

53.30

53.30 

53.30

53.30

53.30 

53.00 

52.80

52.80

53.20

53.10 

53.50

51.90

53.40

53.40

48.90

43. 00

49 60

CO Oft

n nn

53.00

47.80

10 Oft

47.10

51.70

Apr.

53. 30 

53.30

53.30

54.70 

53.40

53.80

53.30 

53. 30

53.30 

53.30

53.30

54.10 

53.30 

53.00

53.60

53.00

53.00 

53.00

53.00

53.00

53.30

53.30

CO Oft

CO Oft

53.80

53.50

53.30 

46 70

42 40

......

May.

46.50 

53.30

48.40

51. 70 

51.20

52.20

51.20 

53.30

46.10 

28.00

15.20

7.37 

6.00 

5.90

5.90

5.80

9.77 

4.30

4.30

4.03

2.17

1.50

1.70

1.70

13.40

49 70

43.00 

29.30

7.23

June.

2.00 

2.00

1.80

1.40 

. 1.20

1.63

1.00 

1.13

.90 

16.60

41.00

39.00 

33.30 

23.10

14.80

11.50

5.20 

2.05

2.26

2.03

19.10

11.30

3.10

13.20

16.80

22.10

11.70

4.50 

3 on

2 ft7

July.

2.03 

6.43

11.30

34.40 

20.50

8.17

2.77 

2.33

48. 70 

25.60

28.10

21.30 

35.20 

27.90

17.60

3.60

2.57 

2.13

1 43

15. 30

3.03

2.10

1.65

1.60

QE

.60

Aug.

0.55 

.60

.50

.40 

.20

.10

.35 

.20

7.40 

2.46

27.90

20.20 

10.20 

14.90

49.10

37. 50

19.60 

9.46

2.06

1.73

1.80

10.60

5.33

1.43

1.86

1 4fj

1 9fl

.76 

4.33

1.40

1.46

Sept.

1.66 

33.40

49.50

41.50 

29.00

35.80

46.90 

30. CO

17.80 

2.56

1.93

1.33 

1.33

.80

.01

.......

23.30

Oct.

14.80 

11.50

10.50

2.00 

1.03

.50

""."56"

.14 

1.50

.90

3.27 

3.30 

43. 00

35.70

18.00

7.90 

2.80

2.03

1.70

35.60

52.80

53.30

53.30

40.90

39.40

CO Af\

53.30 

53.30

53.20

53. 20

Nov.

52. SO 

51.50

53.10

48. 00 

34.70

42.90

34.30 

15.90

44.70 

45.40

28.00

37.50 

43.10 

40.70

34.60

50.70

51.20 

47.80

53.30

53.40

53.30

53.40

53.40

9.37

Dec.

1.50 

12.00

14.20

2.73 

1.73

1.47

1.70 

.30

.20 

.23

.90

""."63 

6.00

20.70

34.90

34.70

48.20

53.70

47.10

48.30

53.60

53.50

51.40

45.20

50.20

49.20

49.50 

50.10

49.40

44.70

Monthly discharge of Haiku ditch at Peahi weir, near Huelo, Maui, for 1912.

Month.

March... . .................................................

April.....................................................

May.....................................................

June.....................................................

July.....................................................

October. . ................................................

Discharge in million gallons.

Maximum.

40.30 

53.40 

53.50 

54.70 

53.30 

41.00

49.10

Minimum.

0.63 

1.10 

13.20 

42.40 

1.50 

.90

.10

Mean.

9.16 

24.60 

50.90 

52.80 

23.70 

10.40 

12.20 

7.65 

19.80 

23.40 

40.80 

27. 60

25.30

Run-off 

(total in 

million 

gallons).

284 

712 

1,580 

1,580 

736 

312 

329 

237 

317 

703 

979 

827

8,600
ISLAND OF MAUI. 209

MISCELLANEOUS MEASUREMENTS.

The following discharge measurement was made by J. B. Stewart 

on Koolau ditch at Alo division weir, near Huelo, Maui:

March 13, 1912: Width, 8.0 feet; area of section, 33.6 square feet; mean velocity,' 

4.12 feet per second; gage height, 1.51 feet; discharge, 139 second-feet.

PUMPED WATER ON MAUI.

Considerable water is pumped for irrigation by different plantations on the leeward side of Maui.

Figures showing the amount of water pumped each month by the 

Pioneer Mill Co. have been furnished to the United States Geological 

Survey. These data show the amount of underground water raised 

by eight pumps, seven steam and one electric, located in the vicinity 

of Lahaina. The measurements were obtained by means of pump 

displacement.

Monthly discharge of pump No. 1, station No. 1, Pioneer Mill Co., near Lahaina, Maui,

for 1912.

Month.

May.........................................................

July.........................................................

October. .....................................................

Days.

29

17

7

24

31

30

31

31

28

31

30

26

315

Hours.

6924

356

155

488J

742J

707fc

7121

744

669

7414

710J

577

7,300

Million 

gallons 

water 

lifted.

248

130

58.8

193

292

276

274

273

251

272

268

223

2,760

Million 

foot-gallons 

water lifted.

69,500

36,400

16,500

54,000

81,700

77,300

76,600

76,500

70,200

76,100

75,200

62,600

773,000

Monthly discharge of pump No. 2, station No. 1, Pioneer Mitt Co., near Lahaina, Maui,

for 1912.

Month.

May.........................................................

July.........................................................

December. ...................................................

The year. ..............................................

Days.

16

1

10

in

31

31

24

31

30

15

219

Hours.

1R5485

226J

678J

677J

691J

621

701

636

155}

4,580

Million 

gallons 

water 

lifted.

41.20

2.44

50.30

151.00

150.00

154.00

138.00

156.00

141.00

34.50

1,020

Million 

foot-gallons 

water lifted.

11,500

684

,

14,100

42,200

42,100

43,000

38,600

43,600

39,500

10,700

286,000

14694° wsp 336 14
210 WATER RESOURCES OF HAWAII, 1912.

Monthly discharge of pump No. 3, station No. 1, Pioneer Mill Co., near Lahaina, Maui,

for 1912.

Month.

May..... ....... ..............................................

July.........................................................

Days.

6

1

29

30

30

21

117

Hours.

70i

10

397J

503J

587

374

1,940

Million 

gallons 

water 

lifted.

21.6

3.08

122.00

155.00

181.00

115.00

598

Million 

foot-gallons 

water lifted.

2,210

314

12,500

15,800

18,500

18,800

68,100

Monthly discharge of electric pump, station No. 1, Pioneer Mill Co., near Lahaina, Maui,

for 1912.

Month.

July.........................................................

The year. ..............................................

Days.

30

16

26

29

31

30

31

31

30

31

30

26

341

IT ours.

694J

369

534J

6141

711

713J

713J

742

mi

716J

707

625f

7,860

Million 

gallons 

water 

lifted.

260

138

200

240

267

268

268

278

269

268

265

235

2,960

Million 

foot-gallons 

water lifted.

26,600

14,100

20,400

24,500

27,200

27,300

27,300

28,400

27,400

37,400

87,000

23,900

302,000

Monthly discharge of pump No. 1, station No. 2, Pioneer Mill Co., near Lahaina, Maui,

for 1912.

Month.

April. ........................................................

July.........................................................

October. .....................................................

December. ..................................................

The year. .................... ..... .

Days.

-29

. 29

30

30

31

Qrt

31

31

30

31

29

28

359

Hours.

670

642

670

654

744

704

712

686

645

732

548

611

 8,020

Million 

gallons 

water 

lifted.

67.0

64.2

67.0

65.4

74.4

70.4

71.2

68.6

64.5

73.2

54.8

61.1

802.0

Million 

foot-gallons 

water lifted.

5,730

5,490

5,730

6,590

6,360

6,020

6,090

5,870

5,510

6,260

4,690

5,220

68,600
ISLAND OF MATH. 211

Monthly discharge of pump No. 2, station No. 2, Pioneer Mill Co,, near Lahaina, Maui,

for 1912.

Month.

February ....................................................

May...... ...................................................

July.........................................................

October. .....................................................

The year. ..............................................

Days.

29

29

29

30

31

30

31

31

30

31

29

28

358

Hours.

652

641§

656

654

744

720

698

670f

573

696

548

509

7,760

Million 

gallons 

water 

lifted.

65.2

64.2

65.6

65.4

74.4 79 n

69.8

67.1

57.3

69.6

54.8

50.9

776

Million 

foot-gallons 

water lifted.

5,570

5,480-

5,610

5,590

6,360

6,160

5,970

5,730

4,900

5,950

4,690

'4,350

66,400

Monthly discharge of pump No. 1, station No. 3, Pioneer Mill Co., near Lahaina, Maui,

for 1912.

Month.

May.........................................................

July.........................................................

Days.

11

30

31

31

30

31

30

12

206

Hours.

240

694

735

736

710

727

691

211

4,740

Million 

gallons 

water 

lifted.

66.4

206.0

229.0

265.0

255.0

265.0

242.0

73.4

1,600

Million 

foot-gallons 

water lifted.

28,500

88,700

98,500

114,000

109,000

114,000

104,000

31,600

688,000

Monthly discharge of pump No. 2, station No. 3, Pioneer Mill Co., near Lahaina, Maui,

for 1912.

Month.

May.........................................................

July.........................................................

Days.

20

30

31

31

30

31

30

7

210

Hours.

578

698

737

739

715

730

700

143

5,040

Million 

gallons 

water 

lifted.

136

209

231

260

256

262

245

48.5

1,650

Million 

foot-gallons 

water lifted.

58,400

90,200

99,200

112,000

110,000

112,000

105,000

20,900

708,000
212 WATER RESOURCES OF HAWAII, 1912.

ISLAND OF HAWAII.

HILO GROUP OF STREAMS.

WAILUKU RIVER NEAR HILO, HAWAII.

Location. A short distance above Hilo Electric Light Co. power canal intake and

about 2 miles west of Hilo.

Records available. March 21, 1911, to December 31, 1912. 

Gage. Vertical staff and Barrett & Lawrence hydro-chronograph; datum unchanged

since gage was established. 

Channel. Probably slightly shifting.

Discharge measurements. Made from cable car 120 feet below gage. 

Accuracy. Results considered good.

Discharge measurements of Wailuku River near Hilo, Hawaii, in 1912,

Date.

July 12

20

Hydrographer.

.....do.............

Gage 

height.

Feet.

7.04

5.80

5.20

Discharge.

Sec.-ft. 

36

475

170

102

Date.

31

Dec. 7

23

Hydrographer.

.....do.............

.....do.............

.....do.............

Gage 

height.

Feet.

8.20

6.85

14.7

Discharge.

Sec.-ft.

OO K

780

360

5,620

a Measurement made by wading 150 feet above gage.

6 Backwater on gage caused by temporary sandbag dam at intake of power canal.

Daily gage height, in feet, of Wailuku River near Hilo, Hawaii, for 1912. 

[J. Goorko, observer.]

Day.

1......................

3. ................ .....

4......................

5. .................... .

6. .................... .

1. .....................

8......................

9. ................. ....

10......................

11......................

12......................

13......................

14......................

15......................

16......................

17. .................. ...

18......................

19......................

20......................

21......................

22......................

23......................

24......................

25......................

26......................

27......................

28......................

29......................

30......................

31......................

Feb.

6.0

15.0

15.5

13.0

11.0

9.0

7.6

7.25

7.20

7.20

Mar.

6.69

6.40

6.06

5.78

5.58

5.42

5.29

5.20

5.23

5.28

5.84

7.89

8.58

8.84

7.71

7.04

7.88

9.96

8.26

7 62

7.16

6 79

6.42

5 09

5.46

5.74

7.33

Apr.

6.32

5.95

5.86

6.49

6.88

6.60

11.34

9.47

10.02

8.73

8.16

7.18

6.76

6.66

7.56

7.04

6 no

6.33

6.10

7.07

7.41

7 60

7.63

7.36

6.60

6.41

May.

6.26

6.88

6.80

8.00

7.50

7.80

7.30

6.80

6.53

6.22

5.98

5.58

5.40

5.14

5.12

5.03

4.93

4 91

4 01

4.85

4.74

4.76

4.63

4.52

4.50

4.44

4.39

June.

4.38

4.37

4.27

4.26

4.27

4.14

4.11

4.22

4.30

4.77

5.85

5.19

5.09

4.88

4.77

4.77

4.61

4.53

4.56

4.61

5.02

4

QA

4

«o

5.23

5.34

5.10

5.79

5.81

5.39

5.27

July.

5.15

5.60

7.07

6.27

5.95

5.76

5.49

5.28

5.15

6.13

8.30

6.99

6.51

7.17

6.40

6.02

5.85

5.70

5.55

5.40

5.30

5.25

5.56

5.34

5.14

5.10

5.04

5.13

5.06

4.94

Aug.

4.88

4.88

5.50

5.77

5.39

5.07

5.02

4.97

4.98

4.98

4.93

4.98

4.96

5.23

5.05

4.94

4 99

4 91

4 so

4.91

A 81

4.77

5.14

4.98

4.86

4.80

4.81

Sept.

6.24

7.27

10.20

12.45

9.40

8.10

7.40

7.00

6.90

6.57

6.22

6.02

6.02

5.78

5.77

5.55

5.33

5.21

5.29

5 OK

5.02

4 94

4

QQ

4.83

4.78

4 79

5.12

Oct.

5.25

4.91

4.87

4.82

4.71

4.65

4.60

4.63

4.68

4.79

5.16

5.04

5.28

5.39

8.13

6.11

7.11

10.32

8.40

7 A1

9 30

10.82

8.89

8.76

Nov.

8.24

8.12

9.72

7.93

7.74

7.61

7.36

7.42

8.3

10.6

10.8

8.15

7.58

7 13

7.88

9.28

Q 01

7 fi9

7 44

7.20

7 91

7.00

6.72

6.67

7 00

6.78

6.98

Dec.

7.92

8.91

8.80

7.92

7.30

6.93

6.89

7.16

6.82

6. 48

6.26

6.02

5.82

5.73

5.73

5.96

5.73

5.61

5.94

6 95

6 48

8

QC

14.26

11.64

8.75

9 T9

7.52

7.20

6.93

6.71
ISLAND OP HAW AH. 213

Daily discharge, in second-feet, of Wailuku River near Hilo, Hawaii, for 1912.

Day.

1......................

2......................

3......................

4......................

5......................

6......................

7......................

8...................... 9.............:........

10......................

11......................

12......................

13......................

14......................

15......................

16......................

17......................

18......................

19......................

20......................

21......................

22......................

23......................

24......................

25......................

26...."..................

27......................

28......................

29.......................

30......................

31......................

Feb.

203

5,880

6,320

4,130

2,470

1,150

568

470

457

457

Mar.

334

273

213

169

143

124

111

102

105

110

178

661

934

1,060

601

415

657

1,720

798

574

447

354

357

277

224

190

152

129

114

164

492

Apr.

258

195

181

291

378

314

2,740

1,420

1,760

1,010

760

517

452

350

/ 329

327

556

415

376

390

260

219

423

514

568

577

500

403

314

275

May.

247

378

359

700

539

630

484

359

299

240

200

161

143

122

104

97

95

87

78

77

79

72

65

66

57

58

55

51

50

46

43

June.

43

42

37

36

37

33

32

35

38

67

180

101

92

75

67

67

57

52

54

57

86

72

57

105

116

93

171

174

121

109

July.

98

145

423

249

195

166

132

110

98

224

814

406

295

449

273

206

180

158

139

122

112

107

102

140

116

97

93

88

96

89

79

Aug.

75

75

133

168

121

90

86

83

82

82

82

78

82

81

105

88

79

80

109

83

77

70

70

77

70

67

97

82

73

69

70

Sept.

243

476

1,890

3,660

1,380

737

511

405

383

308

240

306

206

206

169

168

139

124

115

103

111

107

91

86

79

75

71

68

63

95

Oct.

107

77

74

70

63

59

56

55

58

61

68

137

98

88

110

121

748

221

323

473

434

1,970

2,720

855

519

1,320

4,620

2,330

2,040

1,080

1,020

Nov.

790

745

1,570

675

611

571

500

517

814

2,170

2,310

1,060

756

562

439

657

1,310

1,010

1,170

637

522

457

460

405

341

329

405

415

354

403

Dec.

671

1,100

1,040

671

484

390.

381

447

364

289

247

206 '175

162

162

197

162

146

193

395

289

1,060

5,220

2,980

1,020

1,210

771

545

457

390

338

Monthly discharge of Wailuku River near Hilo, Hawaii, for 1912.

Month.

July...............................................

The period ..................................

Discharge in second-feet.

Maximum.

6,320 

1,720 

2,740 

700 

180 

814 

168 

3,660 

4,620 

2,310 

5,220

Minimum.

203 

102 

181 

43 

32 

79 

67 

63 

55 

329 

146

Mean.

2,210.0 

393.0 

569.0 

195.0 

76.9 

194.0 

86.- 6 

420.0 

709.0 

765.0 

715.0

Run-off 

(total in 

aere-feet).

43,800 

24,200 

33,900 

12,000 

4,580 

11,900 

5,320 

25,000 

43,600 

45,500 

44,000

294,000

Accuracy.

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A. 

A.

HONOLII RIVER AT KAIWIKI, NEAR HILO, HAWAII.

Location. One-half mile north of Kaiwiki and 6 miles west of Hilo, at an elevation

of about 1,425 feet.

Records available. June 1, 1911, to December 31, 1912. 

Gage. Vertical staff and Barrett & Lawrence hydro-chronograph; datum unchanged

since gage was established. 

Channel. Probably slightly shifting.

Discharge measurements. Made from small footbridge 40 feet below gage. 

Accuracy. Results considered good.
214 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements of Honolii River at Kaiwiki, near Hilo, Hawaii, in 1912.

Date

Feb. 1

Oct. 17 

21

23

23

Hydrographer.

C.H. Pierce........

E. O. Christiansen. 

.....do..............

.....do..............

.....do..............

Gage 

height.

Feet. 

4.79

6.68

t Qfi

10.0

8.8

Discharge.

Sec.-ft. 

2.71

272 

121

2,100

1,100

Date.

Oct. 30

Nov. 23 

30

Dec. 13

31

Hydrographer.

E. O. Christiansen..

.....do.............. 

.....do..............

.....do..............

.....do..............

Gage 

height.

Feet. 

6.59

5.93 

5.46

5.24

5.50

Discharge.

Sec.-ft. 

255

125 

52

28

63.3

Daily gage height, in feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912.

[J. Goorko, observer.]

Day.

1... ............

2...............

3. ..............

4...............

6...............

1. ..............

8...............

9..... ..........

10...............

11...............

12............... isf . .............

14.. . ............

15...............

16...............

17...............

18...............

1Q

20-- ..... ........

21............... 

22............... 

23............... 

24...............

OK

26............... 

27............... 

28...............

29...............

30...............

31...............

Jan.

5.45

5.38

5.32

5.27

5.23

5.20

5.17

5.14

5.11

5.09

5.08

5.04

5.02

5.00

498

4.97

4.92

4.90

4.88

4.86

4.83 

4.82 

4.§0 

4.79

4.78

4.76 

4.75 

4.74 

4.72

4.70

4.68

Feb.

4.80

4.80

4.80

4.80

4.80

4.80

4.80

4.80

4.80

4.80

4.80

4.i79

4.89

4.98

4.95

4.90

4.84

4.80

4.91

5.84

8.13 

9.16 

8.41 

6.96

5.56 

5.74

.......

Mar.

5.63

5.47

5.30

5 1Q

5.11

5.13

5.26

5.33

5.34

6.02

6.86

6 84

>» Q?

5.64

6.39

7.43

6.28

6.02

5.84 

5.55 

5.60 

5.46 

5.38

5.34 

5.25 

5.18 

5.12

Apr.

8.46

7.23

7.32

6.76

6.41

5.94

X. 77

5.56

5.72

5 CO

6.28

5.90

5.75

5

00

6.14 

6.01 

5.94 

6.22 

6.35

6.28 

6.09 

5.81 

5.58

5.47

May.

5.46

5.70

5.92

6.55

6.36

6.55

5.86

5.62

5.49

5.38

5.30

5.24

5 9ft

5.16

5.08

5 Aft

5.09

5.03

4 99

5.04 

5.04 

5.00 

5.00 

5.00,

5.00 

5.02 

5.01 

5.00

4.98

4.96

June.

4.94

4.99

5.00

5.00

4 QQ

4.97

4.97

5.03

5.40

5.53

5.62

5.62

5.44

5.30

5.22

5.17

5.09

5.07

5 1 J.

" "5."80"

5.80

July.

5.30

5.07

6.39

5.85

5.73

5.58

5.43

5.32

5.28

5.78

6.62

5.92

5.72

6.07

5.57

5.41

* 14.

5.32

5.26

5

OO

5.30 

5.29 

5.25 

5.24

5.23

5.12

Aug.

5.12

5.10

6.09

5.74

5.42

5.28

5.24

5.24

5.25

5.24

5.20

5.20

5.29

1 V>

5.49

5.27

K. 1O

5.23

5.42

5

00

5.15 

5.10

5.08 

5.16

5 19

5.08 

5.41 

5.25 

5.22

5.17

5.23

Sept.

6.03

6.63

8.49

8.74

6.25

5.99

6.42

5.74

5.63

5.48

5.78

5.44

5.47

5.41

5.41

5.30

5.28

5.20

5.16

5.15 

5.15 

5.08 

5.06 

5.10

5.09 

5.06 

5.04 

5.02

5.47

Oct.

5.39-

5.22

5.26

5.20

5.12

5.10

5.05

5.04

5.05

5.11

5.39

5.48

5.28

5.33

5.56

6.47

6.52

5.68

6.03

6.60

6.01 

7.96 

8.25 

6.38 

5 80

7.29 

8.62 

7.43 

7.39

6.91

Nov.

6.19

6.02

7.49

6.05

5.96

5,64

5.51

5.50

7.63

9.01

7.30

6.37

6.10

5.74

5.59

6.92

7 10

7.06

0.54

5 Qfl

5.89 

5.86 

6.00 

5.78 

5.60

5.^1 

5.48 

5.91 

5.8.1

5 QA

Dec.

6.72

6.83

6.28

5.77

5.56

5.52

5.82

5.87

5.64

5.45

5.34

5.26

5.22

5.25

5.32

5.50

5.35

5.37

5.85

6

jtn

6.17 

7.90 

9.54 

7.51 

6 19

6.94 

6.14 

5.77 

5.69

5

EQ

5.62

Daily discharge, in second-feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912.

Day.

1. ..............

2. ..............

3...............

4...............

5...............

6...............

7...............

8...............

10...............

u.. .............

12...............

13...............

14...............

15...............

Jan.

52.0

44.0

32.0

28.0

25.0

23.0

20 0

18.0

16.0

13.0

12.0

11.0

10.0

Feb.

i ft

3.0

3 A

3.0

3.0

^ ft

3 A

^ ft

3 0

3 A

^ ft

2.8

6.6

10.0

9.0

Mar.

80

76

KJ.

35

24

Is

1Q

01

qo

SO

138

318

312

274

121

Apr.

120

100

Qft

180

200

1QA

921 Afyj

454

293

91 A.

123

96

66

89

May.

CO ft

120.0

245.0

204.0

245.0

110.0

75.0

57.0

44 0

35.0

29.0

OC A

22.0

16.0

June.

8.6

10.0

11.0

11.0

11.0

9.8

9 8

13.0

46 0

62.0

140 ft

75.0

75.0

51.0

35.0

July.

35

82

210

108

on

69

50

37

OO

07

261

120

89

147

68

Aug.

19

17

151

92

48

33

29

9O

30

9Q

25

35

14.

VI

57

Sept.

I4n

263

QO7

1,070

182

132

216

92

76

CO

54

97

51

54

47

Oct.

45

27

31

25

19

17

14

10

14

IS

45

56

<w

38

66

Nov.

170

loo

509

144

127

78

59

58

1*7

1

OKA

448

206

153

92

71

Dec.

284

310

1 QQ

96

66

61

103

111

78

CO

OQ

31

97

30

37
ISLAND OF HAW AH. 215

Daily discharge, in second-feet, of Honolii River at Kaiwiki, near Hilo, Hawaii, for

1912 Continued.

Day.

16...............

17...............

18...-..--...--.-

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

9.8

7.8

7.0

6.2

5.4

4.2

3.8

3.0

2.8

2.6

2.2

2.0

1.8

1.4

1.0

.8

Feb.

7.0

4.6

3.0

7.4

106.0

760.0

1,360.0

895.0

346.0

151.0

66.0

92.0

90.0

90.0

Mar.

78

210

490

188

138

106

65

72

53

44

39

30

23

19

89

150

Apr.

103

188

116

93

113

161

136

123

176

202

188

151

102

69

54

May.

15.0

1610

13.0

11.0

11.0

13.0

13.0

11.0

11.0

11.0

11.0

12.0

12.0

11.0

10.0

Q 4.

June.

27.0

23.0

16.0

15.0

20.0

30.0

30.0

30.0

40.0

40.0

35.0

130.0

110.0

100.0

100.0

July.

47

39

37

31

28

30

31

32

33

34

35

34

30

29

28

19

Aug.

32

24

28

48

28

21

17

16

22

19

16

47

30

27

23

28

Sept.

47

35

33

25

22

21

21

16

15

17

16

15

13

12

54

Oct.

227

238

83

140

256

136

685

816

208

100

445

1,000

490

477

227

331

Nov.

334

415

376

243

127

114

110

134

97

72

59

56

118

102

123

Dec.

58

dn

43

108

91R

166

660

1,670

515

170

340

161

96

85

69

75

Monthly discharge of Honolii River at Kaiwiki, near Hilo, Hawaii, for 1912.

Month.

April.....................................................

May......................................................

July......................................................

Discharge in second-feet.

Maximum.

52 

1,360 

490 

921 

245 

140 

261 

151 

1,070 

1,000 

1,250 

1,670

1,670

Minimum.

0.8 

2.8 

18.0 

54.0 

9.4 

8.6 

19.0 

16.0 

12.0 

13.0 

56.0 

27.0

.8

Mean.

13.5 

139.0 

109.0 

184.0 

50.2 

43.8 

64.3 

34.9 

128.0 

204.0 

218.0 

193.0

115.0

Run-off 

(total in 

acre-feet).

830 

8,000 

6,700 

10,900 

3,090 

2,610 

3,950 

2,150 

7,620 

12,500 

13,000 

11,900

83,300

KAWAINTTI RIVER AT PEPEEKEO, NEAR HILO, HAW AH.

Location. At highway bridge on government road 7 miles north of Hilo. 

Records available. December 4, 1911, to March 30, 1912.

Gage. Vertical staff; read twice daily, at 6 a. m. and 5 p. m.; datum unchanged. 

Discharge measurements. Made by wading at low water, and from highway

bridge during high water. 

Accuracy. Records fair.

Discharge measurements of Kawainui River at Pepeekeo, near Hilo, Hawaii, in

Date.

Feb. 4

Oct. 9

12

Hydrographer.

C. H. Pierce........

E. O. Christiansen .

.....do..............

Gage 

height.

Feet. 

-0.1

.70

.90

Discharge.

Sec.-fi. 

0.49

9.5

13.2

Date.

Oct. 19

19

Dec. 24

Hydrographer.

E. O. Christiansen .

.....do..............

.....do..............

Gage 

height.

Feet. 

1.89

1.76

3.6

Discharge.

Sec.-ft. 

64

53.2

40.2

One measurement made in January, 1913, used to define rating curve.
216 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of Kawainui River at Pepeekeo, near Hilo, Hawaii, for 1912.

[M. Matsuna, observer.]

Day.

1.. ......... .............

2........................

3........................

4........................

5........................

6........................

7........................

8........................

9........................

10........................

11........................

12........................

13........................

14........................

15........................

Jan.

2.1

1.75'

1.7

1.6

1.55

1.5

1.45

1.45

1.4

1.4

1.35

1.3

1.2

1.1

1.1

Feb.

0.35

.3

.08

.00

00

.00

.00

.00

.00

.00

.00

.00

.7

.65

.1

Mar.

9 (\

2 9

1.95

2.0

1 S

1.65

1.8

1.7

1.7

1.6

3.35

3.95

^ ft

3.05

2.35

Day.

16........................

17........................

18........................

19........................

20........................

21........................

22........................

23........................

24........................

25........................

26........................

27........................

29........................

30........................

31........................

Jan.

1.0

1.0

.9

.85

.8

.7

.7

.6

.55

.5

.45

.5

.5

.4

.4

.4

Feb.

0.00

.00

.00

.85

1.65

2.95

3.85

3.9

2.85

2.1

2.25

2.4

2.05

2.25

Mar.

2.2

2.55

4.1

2.75

2.35

2.2

1.95

2.2

1.9

1.85

1.75

1.7

1.6

1.5

1.45

Daily discharge, in second-feet, of Kawainui River at Pepeekeo, near Hilo, Hawaii, for 1912.

Day.

1.... ....................

2........................

3........................

4........................

5........................

6........................

7........................

8........................

9........................

10........................

11........................

12........................

13........................

14........................

15........................

Jan.

82.0

55.0

51.0

44.0

41.0

38.0

36.0

36.0

33.0

33.0

30.0

28.0

24.0

20.0

20.0

Feb.

4.0

3.4

1.5

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

1.0

9.0

8.0

1.6

Mar.

7s n

96.0

69.0

73.0

58.0

48.0

58.0

51.0

51.0

347.0

480.0

270.0

127.0

Day.

16........................

18........................

19........................

20........................

91

22........................

23........................

24........................

oc

26........................

27........................

28........................

3fi

qi

Jan

16.0

16.0

13.0

12.0

11.0

9.0

9.0

7.5

7.0

6.0

5.5

6.0

6.0

4.6

4.6

4.6

Feb.

1.0

1.0

1.0

12.0

48.0

259.0

457.0

468.0

237.0

82.0

106.0

138.0

77.0

106.0

Mar.

96.0

171.0

514.0

215.0

127.0

96.0

69.0

96.0

65.0

62.0

55.0

51.0

44.0

38.0

35.0

Monthly discharge of Kawainui River at Pepeekeo, near Hilo, Hawaii, for 1912.

Month.

January. .......................

March....................................................

Discharge in second-feet.

Maximum.

82.0 

468.0 

514.0

Minimum.

4.6 

1.0 

35.0

Mean.

22.9 

70.0 

129.0

Run-off 

(total in 

acre-feet).

1,400 

4,030 

7,660

STATIONS KOS. 1, 2, 3, AND 4 AT PIIHONUA, NEAR HILO, HAWAH.i

Location. About 1J miles above Hilo, Hawaii, and about one-half mile north of 

Kaumanu Road.

Records available. February 2 to April 18 and July 30 to August 28, 1912.

Gage. Gage heights were depth of water measured from a reference point. New 

datum for station No. 4 on July 30; relation to former datum unknown. Regular 

gages numbered to tenths installed July 30, 1912. Gage No. 1 discontinued, as 

all water had been diverted for Hilo supply. Gage No. 2, zero of old gage: shank 

of nail at gage height 0.45 foot on new gage. Gage No. 3, zero of old gage: shank 

of nail at gage height 0.45 foot on new gage. Gage No. 4, old gage out; no relation determined between old and new gages.

1 Stations Nos. 1,2,3, and 4 on streams not named.
ISLAND OF HAWAII. 217

Discharge measurements. Made by wading.

Channels. Fair; beds of streams composed of small cobbles and gravel; probably

shifting. 

Cooperation. Maintained in cooperation with the county engineer of Hawaii.

Discharge measurements at station No. 1 at Piihonua, near Hilo, Hawaii, i

Date.

Feb. 2

July 30

Hydrographer.

C. H. Pierce..............................................................

Gage 

height.

Feet. 

0.68

Discharge.

Sec.-fl. 

0.93

.94

September 9: Water of spring piped away.

Daily gage height, in feet, at station No. 1 at Piihonua, near Hilo, Hawaii, for 1912.

Day.

1.. ..........

2............

3............

4............ 

5............

6............ 

7............

8............

9............ 

10............

Feb.

"6." 68"

.71

.72 

.75

.77 

.77

.77

.77 

.77

Mar.

0.71 

.71

.72

.70 

.69

.58 

.63

Apr.

0.84

.83

"".'83

.82

.81

.82 

.80

Day.

11............ 

12............

13............

14............ 

15............

16............

18............

19............ 

20............

Feb.

0.77

.77

.78

.78 

.78

.82

fiQ

.69

.71

fiQ

Mar.

0.89 

.90

.92

1.02 

.96

.94

.98

.96

Apr.

0.77

.76

.73 

.74

.73

Day.

21............

22............

23............

24............ 

25............

26............

97

28............

29............ 

30............

Tl

Feb.

0.81 

.76

.79 

.75

.73 

.73

.72

.72

Mar.

0.95 

.94

.94

.93

.92

.92 

.92

.92

.92 

.92

.87

Apr.

......

......

Discharge measurements at station No. 2 at Piihonua, near Hilo, Hawaii, in 1912.

Date.

Feb. 2

Sept. 9

Hydrographer.

C. H. Pierce..............................................................

E.G. Christiansen. .......................................................

height.

Feet. 

0.71

1.45

Discharge.

Sec.-ft. 

0.47

1.53

Daily gage height, in feet, at station No. 2 at Piihonua, near Hilo, Hawaii, for 1912.

Day.

1.......

2.......

3.......

4.......

6.......

6.......

7.......

8....... 

9....... 

10.......

11.......

12.......

13.......

14.......

15.......

Feb.

0.77

.77

.68

.69

.66

.67

.70 

.72 

.65

.71

.72-

.72

.74

.70

Mar.

1.00

.74

.72

.70

.76

.74

.72

.77

.87

.96

2.00

,94

Apr.

0.70

.75

.89

.75

1.07 

1.30 

1.15

1.00

.90

July. Aug.

0.78

.78

.45

.43

A<y

.42 

.42 

.42

.42

.58

Day.

16.......

17.......

18.......

19

20.......

21.......

23....... 

24....... 

25.......

26.......

97

28.......

29.......

30....... 

31.......

Feb.

0.67

.76

.76

.80

1.00

1.67

1.57

""i.~27" 

.92

.81

.77

.75

1.16

Mar.

0.97

1.50

.88

.81

.81

.75

.71 

.72 

.72

.68

fifi

.69

.71

.70 

1.45

Apr.

0.91

1.15

.96

July.

--------

0.48 

.48

Aug.

0.77

.55

.55

.49

.65

.51

.55

........
218 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. S at Piihonua, near Hilo, Hawaii, in 1912.

Date.

Feb. 2

Sept. 9

Hydrographer.

C. H. Pierce..............................................................

E. O. Christiansen ......

height.

Feel. 

0.88

1.58

Discharge.

Sec.-ft. 

1.10

1.67

Daily gage height, in feet, at station No. 3 at Piihonua, near Hilo, Hawaii, for 1912.

Day.

1.......

2.......

3.......

4.......

5.......

6.......

7.......

8.......

9.......

10.......

11.......

12.......

13.......

14.......

15.......

Feb.

0.88

.89

.88

.87

.87

.87

.87

.87

.85

.89

.89

.90

.90

.90

Mar.

1.03

.92

.94

.93

.90

.87

.81

.88

.96

.98

1.19

1.79

1.12

Apr.

0.94

.95

1.05

QK

1.07

1 QQ

1.12

1.03

July. Aug.

0.92

no

.65

.65

.65

.65

.65

.65

.65

.65

.92

Day.

16.......

17.......

18.......

19.......

20.......

21.......

22.......

OQ

24.......

25.......

26.......

27.......

28.......

29.......

30.......

Feb.

0.86

.85

.86

.87

.93

1.18

2.02

1.09

1.02

1.00

.98

1.11

Mar.

1.11

1.38

1.08

1.02

1.01

.98

.96

.95

.95

.93

.93

.93

.94

.94

1.40

Apr.

1.06

1 97

1.12

July.

0.74

.70

Aug.

0.92

.77

.78

.82

.85

.85

.86

Discharge measurements at station No. 4 at Piihonua, near Hilo, Hawaii, in 1912.

Date.

Feb. 2

Sept. 9

Hydrographer.

C.H. Pierce.. .....................................................................

Velocity.

No flow.

Do.

Daily gage height, in feet, at station No. 4 at Piihonua, near Hilo, Hawaii, for 1912.

Day.

1.......

2.......

3.......

4.......

5.......

6.......

7.......

8.......

g

10.......

11.......

12.......

13.......

14.......

15.......

Feb.

.23

9H

.10

(«) (") («)

fa)

(«)

(«)

(a)

«

(a)

(a)

Mar.

1.50

1.58

1.59

1 60

1.51

1.42

1.40

1 34

1 54

1.62

2

00

1.79

Apr.

1.54

1 49

1 V)

1.49

1.63

1

7C

1.70

1 69

July. Aug.

1.05

1.15

1.01

1.00

91

.81

.70

.47

Day.

16.......

17.......

18.......

19.......

20.......

21.......

22.......

23.......

26.......

27.......

28.......

29...'....

30.......

01

Feb.

(a)

(a)

(a)

(a)

(a)

1.11

1.89

1.79

1.82

1.76

1.72

1.72

1.49

Mar.

1.71

1.83

1.75

1.64

1.62

1.61

1.60

1.58

1.57

1.56

1.54

1.57

1.58

1.56 

1.97

Apr.

1.64

1.71

1.70

July.

1.08 

1.03

Aug.

1.30

1.32

1.53

1 67

1.10

1.00

1.08

 Channel dry.
ISLAND OF HAWAII. 219 

STATIONS AT 2,700-FOOT LEVEL 1 IS THE FOREST BACK OF HILO, HAWAII.

The perennial streams of the island of Hawaii are in general 

restricted to two zones, one comprising an area about 10 miles wide 

in the Kohala and Hamakua districts, and the other, including an 

area about 12 miles wide, situated in the Hilo district between the 

South Branch of Wailuku River on the southeast and Maulua Gulch 

on the northwest.

The run-off from the Kohala-Hamakua district at ordinary stages 

is now diverted into ditches serving the sugar lands of the north coast 

of the island. It is proposed to divert the run-off of the Hilo district 

at an elevation above the 2,500-foot contour and deliver it by a 

high-line ditch to serve the semi-arid lands of Kau on the south side 

of the island. Limited funds have restricted operations so far to 

the area bounded by the South Branch of Wailuku River and the 

North Branch of Kawainui River. All the streams of this region 

originate on the east slope of Mauna Kea. Above the wet belt, 

comprising about 75 square miles, the surface is composed of porous 

lava rock that absorbs practically all the rainfall.

Ten rain gages, which are read at monthly and bimonthly intervals, are maintained at approximately 500-foot intervals of elevation 

from sea level to an elevation of 5,000 feet in this district.

STATION RECORDS.

Location. On the line of a trail cut out approximately on the 2,700-foot contour, 

in the forest above Hilo, Hawaii, during September and October, 1911. The trail 

is about 12 miles in length, trends in a general northerly and southerly direction, 

and crosses 83 streams having appreciable channels, from the South Branch of the 

Wailuku to the North Branch of Kawainui River. A gaging station is maintained 

on each of these streams, whether perennial or not, at the trail crossing. Beginning at the South Branch of the Wailuku with No. 1 the stations are numbered 

consecutively northward to No. 87, except for a break of 6 numbers between stations No. 18 and No. 25. A camp maintained near the middle of the zone under 

observation is reached by a foot trail, 3J miles long, from the end of the Kaiwiki 

Homestead road.

Records available. Stations 1-12, October 1, 1911, to December 31, 1912. 

Station 12a, November 30 to December 31, 1912. 

Stations 13-18, 25-26, October 1, 1911, to December 31, 1912. 

Stations 27-41, September 28, 1911, to December 31, 1912. 

Stations 42-47, September 26, 1911, to December 31, 1912. 

Stations 48-50, September 31, 1911, to December 31, 1912. 

Stations 51-52, October 7, 1911, to December 31, 1912. 

Stations 53-65, October 10, 1911, to December 31, 1912. 

Stations 66-68, October 21, 1911, to December 31, 1912. 

Stations 69-74, November 13, 1911, to December 31, 1912. 

Stations 75-S6, November 14, 1911, to December 31, 1912. 

Station 86a, November 18, 1912, to December 31, 1912. 

Station 87, November 14, 1911, to December 31, 1912.

i Aneroid readings gave elevation ot 2,600 feet. More accurate determinations made later by topographers of U. S. Geol. Survey gave elevations 200 to 280 feet higher. The correct elevation of the survey 

camp at station No. SO ia 2,750 feet.
220 WATER RESOURCES OF HAW AH, 1912.

Gages. Vertical staffs. Two observers have been continuously employed to read 

these 83 gages twice a day, except at such times when it was impossible to cross 

the streams at high water. The men alternated trips, north and south from the 

camp, and different observers were employed at different times.

Discharge measurements. Made by wading.

Accuracy. The total run-off for 1912 for all the stations was found to be 179,000 

acre-feet, and that part which was determined from the good stations amounted 

to 173,000 acre-feet, leaving only 3 per cent of the total that might be very much 

in error. Although the estimated discharge forms quite a large percentage of the 

total discharge for the 83 stations, the mean monthly discharge for all the streams 

is probably correct within less than 25 per cent. See also notes to daily discharge 

tables.

Discharge measurements at station No. 1 at 2,700-foot level, near Hilo, Hawaii, in 1912.

Date.

Aug. 13

Nov. 21

T)«/* 97

Hydrographer.

.....do............. ......................................................

.....do....................................................................

.....do................................. .................................

Gage 

height.

Feet. 

-0.62

-1.17

.82

1.47

Discharge.

Sec.-ft. 

0.26

.06

32.5

65.7

NOTE. Channel in bedrock; smooth. Stream flows in one channel at all stages and is permanent. 

This station is on the South Branch or principal tributary of Wailuku River.

Daily gage height, in feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii, for

1912.

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]

Day.

1........ .......

2...............

3.. .............

4.. ............. 

5...............

6. 1... ...........

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22. ..............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.18

.12

.08

.05

.05

.08

.05

(Y>

- .15

- .25

- .38

7O

- .85

-1.20

Feb.

.......

0.24

.......

Mar.

0.10

- .06 

- .18

on

.10

.15

91

7C

1.00

1.12

QQ

.72

.96

.85

.82

CO

.49

on

.12

- .01 

- .14

- .20

Apr.

0 48

.65 

.69

.71

1.28

1.24

1.00

CQ

AQ

.35

.41

.44

jn

.72

64

.52

.68

.80

.72 

.71

May.

1.38

.91

.40

- .20

- .05

- .11

- .30

- .31

- .40

June.

-o.'is"

- .42

.40

40

.30

.20

- .21

- .45

+ .11 

- .10

July.

0.29

.08 

- .05

- .22

- .35

- .05

.14

.01

- .39

- .60

+ .10

- .24

- .41 

- .59

- .60

Aug.

-1.05

+ .21 

- .70

- .45

- .41

- .35

- .28

- .94

- .61

- .62

- .48

-1.15

-1.18

-1.00

-1.02

-1.05

- .35

Sept.

'Too'

.94

.90

.62

.22

.40

.20

.15

- .05

.10

- .10

- .17

- .28

- .22

- .25

- .45

- .65

- .90

-1.17 

-1.25

-1.25

- .25

Oct.

-0.40

- .60

- .98 

-1.00

-1.05

-1.12

- .76

- .18

+ .04

- .16

.48

.88

1.74

1.04

.64

1.16

Nov.

1.75

-i.'io"

.62

.49

1.08

1.80

1.50

1.08

1.38

1.25

1.22

.82

.65

.71

.44

.35

.20

.48

Dec.

1.59

1.05 

.61

.52

1.00

.70

<m

.19

.10

- .10

.08

.18

.22

.02

- .08

.21

.48

1.25

1.48 

1.02

.78
ISLAND OF HAWAII. 221

Daily discharge, in second-feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1..................

2. .................

3..................

4..................

5..................

6..................

7..................

8..................

9..................

10..................

11..................

12..................

13..................

14..................

15..................

Oct.

112.00

94.80

79.60

65.20

52.00

41.00

36.60

32.20

27.80

23.50

19.60

18.40

17.20

16.00

14.80

Nov.

0.40

.40

2.50

11.00

13.00

13.90

14.80

15.70

16.60

13.00

17.50

22.00

27.00

29.00

Dec.

7.20

5.92

7.20

6.40

5.92

4.10

2.66

12.00

16.60

10 flfi

12.60

11.40

46.00

86.40

208.00

Day.

16. .................

17..................

18. .................

19..................

20. .................

91

22..................

24..................

OC

26. .................

27..................

28..................

29..................

30........... .......

31..................

Oct.

13.60

12.60

8.10

6.72

5.47

4.43

3.60

2.90

2.29

1.74

1.20

1 00

80

.64

.52

.40

Nov.

36.20

52.50

67.00

85.00

OK Afl

85.00

85.00

85.00

85.00

7o ftfl

54.00

OQ Art

33.80

27.00

20.50

Dec.

122.00

124.00

154.00

184.00

140.00

107.00

67.00

45.00

27.00

56.20

37.80 ">>; nn

24.40

31.00

22.00

25.00

Daily discharge, in second-feet, at station No. 1 at 2,700-foot level, near Hilo, Hawaii^

for 1912.

Pay.

i

2...............

3...............

4...............

5...... .......

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17. ..............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

13.0

13.0

13.0

11.0

11.0

10.0

10.0

11.0

10.0

9.0

6.4

5.0

3.5

2.2

1.2

.6

.4

.2

.1

(a)

a)

a)

a)

a)

(a)

&

(a)

ft (a)

(a)

F<

c

(

(

(

3b.

i

%

i

i

')

i

i

i

%

%

»)

i

i

z

i

')

*)

il

>>

14

60

00

30

80

60

50

40

30

?,0

Mar.

15.0

13.0

11.0

7 9

5.9

5.1

4

0

8.0

11.0

12.0

13.0

31.0

41.0

46.0

41.0

28.0

39.0

37.0

37.0

35.0

34.0

23.0

22.0

19.0

16.0

11.0

8.8

6.6

5.6

11.0

60.0

Apr.

35

28

21

97

29

9Q

80

7K

70

54

52

41

33

25

29

35

40

19

20

19

30

27

23

26

28

33

30

29

25

35

May.

40.0

50.0

40.0

60.0

80.0

V7 (\

34.0

°.i ft

28.0

25.0

23.0

21.0

19 0

16.0

12.0

9.0

5.6

6.8

8.1

8.0

8.0

7.0

7.0

5.6

4.3

4.2

4.2

4.0

3.8

3.6

3.3

June.

3.0

3.0

3.0 i <\

3.0

i ft

3.1

3

1

3.2

3.2

3.2

3.3

3

0

3.3

3.3

3.8

4.3

4.9

5.2

5.6

5.6

5.6

5.6

5.5

3.0

11.0

7.2

7.0

6.0

July.

6.0

8.0

16.0

11.0

8.1

5.3

4.6

3.8

2.6

8.1

40.0

20.0

12.0

10.0

9.0

,8.0

7.0

6.0

5.0

4.0

3.4

2.6

1.8

11.0

8.0

5.1

3.2

1.9

1.8

1.0

1.0

Aug.

0.2

30.0

20.0

13 0

1.2

2.0

2.9

°. 9

3.8

4.6

2.4

.3

1.7

2.3

2 9

1.7

2.2

2.7

3.0

1.0

.5

.1

.1

.2

.2

.2

3.8

3.0

2.0

1.0

3.0

Sept.

25.0

30.0

60.0

80.0

41.0

39.0

37.0

26.0

21.0

18.0

14.0

19.0

13.0

12.0

10.0

11.0

9.0

7.2

6.1

4.6

5.3

5.0

2.9

1.5

1.0

.4

.1

.1

.1

5.0

Oct.

3.3

1.8

1.0

.2

.2

.2

.2

.1

.2

2.9

.9

5.9

10.0

6.2

12.0

10.0

40.0

21.0

36.0

35.0

40.0

70.0

120.0

81.0

43.0

27.0

135.0

90.0

80.0

60.0

48.0

Nov.

82

90

110

70

61

20

26

22

44

110

100

85

67

44

30

60

80

52

60

51

34

27

29

24

20

18

13

40

30

21

Dec.

sao

90.0

72.0

43 0

25.0

23.0

24.0

41.0

29.0

19.0

13.0

11.0

7.2

11.0

13.0

14.0

9.0

7.6

13.0

40.0

21.0

60.0

90.0

80.0

52.0

70.0

66.0

42.0

32.0

20.0

15.0

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station 50.
222 WATEE BESOURCES OF HAWAII, 1912.

Monthly discharge at station No. 1 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April. ........................

Mean discharge in 

secondfeet.

23.10

38.50

52.80

d 91

20.10

21.20 "w on

19.50

Run-off 

(total in 

acrefeet).

1,420

2,300

3,260

9<M

1,170

1 300

2,080

1 9/1O

Month.

1912 Continued.

July..........................

Mean discharge in 

secondfeet.

4.40

7.59

3.72

16.80

31.70

50.70

36.50

20.90

Run-off 

(total in 

acrefeet).

264

467

229

1,000

1,950

3,120

2,240

15,300

Discharge measurements at station No. 2 at 2,700-foot level, near Hilo, Hawaii, in 1912.

Date.

Aug. 13

Sept. 27

Nov. 21

Dec. 27

Hydrographer.

E. O. Christiansen. . ...... ...............

.....do....................................................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet. 

0.47

.48

.55

;61

Discharge.

Sec.-ft. 

0.02

.03

.10

NOTE. Channel of sand, mud, and gravel; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 2 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

3............... 

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26............... 

27............... 

28...............

29...............

30...............

91

Ja

0.

c

c

c

c

a

(«

(o

("

<«

¥ (°

("

"(c 

(/

(°

(°

n.

44

41

42

45?

45

41

41

i

)

)

)

)

)

)

)

Feb.

"(«)"

W(«)

(a)

(a)

(a)

(a)

(a)

(a)

(a

(a

(a

(a

0.63

.......

Mar.

0.39 

.36

.35 

""."35"

.40

.40

.51

.69

1.00

.89

.70

.76

.61

.61

49

.45

.44 

.42 

.42

.41

60

Apr.

0.44 

.51

.54 

.59

.60

.54

.54

.50

.52

64

.50

.54

.55

.60

.55

.55

.56

.61

.58 

.55

May.

"6." 76"

.70

.51

.40

.38

.32

.28 

"".21

June.

.......

.30

.28

30

.20

.51

.48 

.48 

.45

July.

0.61 

.56

.50 

.49

.46

.45

.50

.51

.48

.55

.50

.71

.72 

.55 

.45

.45

Aug.

0.45

"".51

.45 

"".'48"

.45

.55

.55

.46

.48

.50

.48

.49

.38

.40

.50

.50

.49 

.50

Sept.

.60

.59 

.61

.52

.52

.51

.58

.55

.55

.52

.55

.54

.51

.50

.50

.50

.49

.49

.49 

.49 

.49

.48

.60

Oct.

0.60

.58

"".51

.50 

.50

.50

.52

.51

.55

.50

.51

.55

.55

.64

.54 

.50

.55

Nov.

0.60

.50 

""."56"

.50

.55

.60

.60

.51

.59

.60

.60

.55

.52

.55

.55

.52 

.51

.60

Dee.

0.60 

.61

.52

.51 

.52

.60

.56

.51

.51

.48

.46

.48

.52

.55

.51

.50

.52

.60

.61

""."62 

.55

.55

a Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.
ISLAND OF HAWAII. 223

Daily discharge, in second-feet, at station No. 2 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1.... ........ 

2............ 

3............ 

4............ 

5............

6............

7............

IQ.'.'.'.".'.'".".

Oct.

0.05 

.05 

.05 

.05 

.05

.05

.05

.05

.05 

.02

Nov.

"6." 05 ~ 

.05

.05

.05

.10 

.10

Dec.

......

......

......

Day.

11............ 

12............ 

13............ 

14............ 

15............

16............

17............

18............

19............ 

20.. ..........

Oct.

0.02 

.02 

.02 

.05 

.05

.05

.05

.05

.05

Nov.

0.10 

.10 

.10 

.10 

.10

.10

.10

.10

.10

Dec.

"o.'io

.10 

.15

.10

.10

.15

.15 

.10

Day.

21............ 

22............

23............ 

24............ 

25............

26............

27............

28............

29............

30 .........

31............

Oct.

......

Nov.

0.10 

.10 

.10 

.10 

.10

Dec.

0.05

"~."i6

.05

.05 

.05

.10

.05

.05

Daily discharge, in second-feet, at station No. 2 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. .........

2..........

3..........

4..........

5..........

6..........

7..........

8..........

9..........

10..........

11..........

12..........

13..........

14..........

15..........

16..........

17..........

is20. .........

21..........

22..........

23..........

24..........

25...........

26..........

27.........

28..........

29..........

30..........

31..........

Feb.

(«)

(«)

0.10

Mar.

0.20

.50

.40

.20

on

.10

Apr.,

0.10

.10

.10

May.

.20

(«)

June.

(a)

(a)

July.

0.60

.20

Aug. Sept.

0.10

.10

.10

Oct.

0.10

.10

Nov.

0.10

.10

.10

.10

.10

.10

Dec.

0.10

.10

.10

.10

.10

.10

a Channel dry. 

Monthly discharge at station No. % at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

November. ...................

1912.

February. ....................

May..........................

Mean 

discharge 

in secondfeet.

-0.03

- .08

.10

.02

.20

oe

.10

.05

Run-off 

(total in 

acre-feet).

1.84

4.76

6.15

1.23

11.50

15.40

5.95

Q ft<7

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.01

.10

.10

.20

.30

.20

.10

.14

Run-off 

(total in 

acre-feet).

0.60

6.15

6.15

H on

18.40

11.90

6.15

98.40
224 WATER RESOURCES OF HAW AH, 1912.

Discharge measurements at station No. 3 at 2,700-foot level, near Hilo, Hawaii, in 1912.

[E. O. Christiansen, hydrographer.]

Date.

Aug. 13.......................

Sept. 27......... .............

Gage 

height.

Feet. 

-0.04

- .12

Discharge.

Sec.-ft. 

1.05

.72

Date.

Nov.21...... .................

Dec. 27. ......................

Gage 

height.

Feet. 

0.72

1.11

Discharge.

Sec.-ft. 

13.0

26.4

Bed of stream, composed of gravel and cobbles, is fairly smooth and probably permanent. One channel 

at all stages. This stream is tributary to Wailuku River.

Daily gage height, in feet, at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...... .........

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22............... 

23............... 

24...............

25...............

26............... 

27............... 

28...............

29............... 

30...............

31...............

Jan.

0.12

.08

.05

.06

.08

.12

.10

.05

-.02

-.08

-.10

-.15

-.18

-.20

-.25

-.26

-.28

-.34 -.38

__ A(\

"-."46"

-.42 

-.45 

.50

Feb.

n (a)

(a)

a)

(<*)

(a)

(a)

fa) h(a)

(a)

(a)

.08

08

(a)

(a)

(a)

(a)

-.75

.25

.......

.......

Mar.

0.17

no

(V>

.02

.10 

.15

oo

.80

QQ

1.02

.89

.72

OQ

.99

.97

.78 

.68

.41

.21 

.10 

.02 

+.09

19

Apr.

0.41

.62

.71

.73

"i IQ"

i i<*

Qfi

.75

.68

.46

64

.66

.49

.78

.71 

.63

v77

.85 

.80 

.79

May.

1.03

.70

.......

OA

.10

.20

""."65"

.00

"+."6i"

+ .15

June.

+0.30

4- S4

98

.20

.20

.10

.10

+ .31 

.01 

+ .02

July.

0.49

.22

.02

- .10

- .25

- .35 

.20

.W

- .01

- .15

-"."35" 

.12

- .25 

- .28 

- .35 

- .40

Aug.

-0.02

.33

.08

.04

.02

.05 

.00

- .09

- .04

.05

.01

.04

- .10 

- .10 

- .11

- .12

- .14 

.08

Sept.

1.20

.90

.96

.78

.54

.32

.42

.26

.10

.08

.02

.05

.02 

.00 -.02

-.10 

-.12 

-.15 

-.18 

.35

Oct.

0.25

.11

- .10

_ 10

- .14

- .22

""."65"

.01

.28

.14

.05

.52

.98

"i."29"

.86 

.70

.81

Nov.

1.11

Q8

.64

.54

.92

.85

.70

.64

.99

1.01

.98

.73

.66 

.71

.54

.40 

.30

""."52"

Dec.

1.05

1.02

.70

.61

.64

.92

.62 

.50

.39

.28

.14

.14

.38

.51

.25

.18

.38

52

1.01

"i.'ii

.81 

.64

a Channel dry. 

Daily discharge, in feet, at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for 1911.

Day.

1............

2............ 

3............

5............

6............ 

7............

8............

9............

10............

Oct.

40.0

34.0 

30.0

26.0

22.0

19.0 

16.0

14.5 

13.0

11.5

Nov.

0.5

.5 

2.5

6.4

10 A

13.3 

13.6

14.2 

14.5

12.7

Dec.

4.1

2.5

1 9

1.2

1.1

.9 

1.2

2.6 

5.2

2.7

Day.

11............

12............

1 3

14............

15............

16............ 

17............

18............

IQ

20............

Oct.

10.0

8.2 

6.4

4 9

3.6

2.7 

2.5

2.3 

2.0

1.7

Nov.

13.0

14.5 

16.0 IQ n

22.8

22.0 

22.0

24.0 

26.0

28.0

Dec.

3.0

2.6 

16.6

34.8

70.0

46.0 

58.0

70.0 

82.0

62.0

Day.

21............

22............

23............

24............

25............

26............ 

27............

28............ 

29............

30............ 

31............

Oct.

1.5

1.4 

1.2

1.1

1.0

.8 

.7

.6 

.5

.4 

.5

Nov.

30.0

30.8 

31.6

31.6

31.6

19.0 

13.6

13.0 

8.6

6.1

Dec.

42.0

32.0

22.8

13.3

34.0

19.6 

13.0

6.1 

16.3

10.0 

13.0
ISLAND OF HAWAn. 225

Daily discharge, in second-feet, at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for

1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14............... 

15...............

16...............

17...............

18...............

19............... 

20...............

2i.. .............

22............... 

23...............

24...............

25...............

26...............

27............... 

28...............

29...............

30................ 

31...............

Jan.

2.7

2.3

2.0

2.1

2.3

2.7

2.5

2.0

1.4

.9

.8

 .6 

.5

.4

.4

.3

.3 

.3

.2

.2 

.1

.1

.1

.1

.1 

.1

.1

.1 

.1

Feb.

(a)

(0

(0

*>" 

(a

(«)

(°)

(°)

(a)

(a)

(«)

(«)

2.3

2.3

(0)

 (a)

nW

4.' 2 

15.0

30.0 

40.0

20.0

10.0

6.0

5.0 

5.0

4.0

Mar.

4.00

3.50

3.30

2.40

1.70

1.70

1.70

-2.10

2.50

3.00

3.90

16.00

21.00

23.00 

18.00

14.00

21.00

21.00

21.00 

21.00

21.00

15.00 

12.00

9.30

6.60

4.00

2.50 

1.70

2.40

3.00 

15.00

Apr.

10.00

8.00

7.00

11.00

13.00

14.00

40.00

37.00

35.00

30.00

27.00

21.00

18.00

14.00 

12.00

7.00

9.00

11.00

12.00 

8.00

15.00

13.00 

11.00

13.00

15.00

17.00

16.00 

16.00

10.00

15.00

May.

15.00

15.00

18.00

23.00

30.00

13.00

10.00

8.00

7.00

6.00

5.00

5.00

4 90

4.30 

3.70

3.10

2.50

3.00

3.60 

3.20

2.80

2.40 

2.00

1.80

1.50

1.50

1.60 

2.00

2.80 

3.10

June.

4.9

6.1

4.60

"3." 60

3.60

2.50

2.50

.......

.......

July.

4.00

5.00

8.00

3.90

1.70

.80

.60

.30

.20

3.60

30.00

10.00

2.90

3.00 

.80

.80

.80

.70

.70 

.60

.60

.40 

.20

2.70

1.00

.30

.20 

.20

.10

.10 

.10

Aug.

0.10

.20

10.00

5.30

2.30

2.10

1.90

1.70

2.10

1.50

1.20

90

1.20

'1.60 

2.10

1.50

1.70

1 90

1.70 

1.40

1.00

.80 

.80

.80

.70

.60

2.30 

2.00

1.50

1.00 

1.50

Sept.

18.00

20.00

33.00

40.00

30.00

19.00

21.00

15.00

8 90

7.00

5.20

6.80

4.40

4.00 

3.60

3.30

2.90

2.50

2.30 

1.70

2.10

1.70 

1.50

1.40

1.10

.80

.70 

.60

.50

5.70

Oct.

4.20

2.60

1.70

.80

.70

.60

.50

.40

.80

1.20

1.50

4.60

2.90

1.20 

1.20

1.00

8.60

21.00

25.00 

30.00

30.00

35.00 

40.00

18.00

13.00

40.00 

35.00

35.00

30.00 

16.00

Nov.

26.00

30.00"

40.00

25.00

21.00

16.00

11.00

8.90

20.00

40.00

38.00

17.00

13.00

11.00 

10.00

22.00

25.00

22.00

25.00 

21.00

14.00

12.00 

13.00

11.00

8.90

6.40

4.90 

15.00

12.00

8.60

Dec.

20.00

35.00

24.00

23.00

13.00

10.00

11.00

20.00

11.00

8.20

6.20

4.60

2.90

2.90 

6.10

8.40

4.20

3.40

6.10 

12.00

8.60

25.00 

40.00

30.00

22.00

25.00

26.00 

16.00

11.00

10.00 

10.00

o Channel dry.

NOTE. Daily discharge determined from rating curve fairly Veil defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 3 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May....... ...................

Mean 

discharge 

in secondfeet.

9.03

17.10

22.20

.83

4.96

9 an

16.20

Run-off 

(total in 

acre-feet).

558

1,020

1,370

51

285

592

964

391

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

- 4.00

2.56

1.79

8.82

14.20

18.80

15.20

8.18

Run-off 

(total in 

acre-feet).

238

157

110

525

873

1.120

935

6,240

14694° WSP 336 14
226 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 4 at .2,700-foot level, near Hilo, Hawaii, in 1912.

Date.

Aug. 13 

Sept. 27

Hydrographer.

E. O. Christiansen.. 

.....do.............

Gage 

height.

Feet. 

0.74 

.74

Discharge.

Sec.-ft. 

0.15 

.14

Date.

Nov. 21 

Dec. 27

Hydrographer.

E. O. Christiansen. 

.....do.............

Gage 

height.

Feet. 

0.78 

.80

Discharge.

Sec.-ft. 

0.51

.77

NOTE. Bed of stream of sand and gravel, smooth, probably slightly shifting. One channel at all stages. 

This stream is tributary to Wailuku River.

Daily discharge, in second-feet, at station No. 4 at 2,700-foo't level, near Hilo, Hawaii, for

1911.

Day.

1...........

2...........

4...........

5...........

6...........

7...........

g

10...........

Oct.

1.08

.08

.94

80

.73

.66

.66

.59";9

.45

Nov.

(a\

(?)

(a)

n(a)

(a)

n tdi

Dec.

(a)

(a)

(«) "

(«)

(»)

(a}

(a) H4

dz

.24

Day.

11...........

12...........

13

15...........

16...........

17...........

18...........

19

20...........

Oct.

0.45

.45

.38

.38

.31

.24

(a)

(a)

(a)

(a\

Nov.

(a)

(i

.31

n(a}

.24

.31

.38

Dec.

0.38

.24

.66

1.08

1.92

1.92

1.08

1.08

1.36

.66

Day.

21...........

22............

23...........

24...........

25...........

26...........

27...........

28...........

29...........

30...........

31...........

A

("("

("

f(o

("

("

0

(I

n

(1

St.

)

\

\

\

\

Nov.

0.45

.52

.59

66

.66

.45

.38

.45

.24

(a)

Dec.

0.45

.24

(«)

(«)

.80

.45

.38

.24

.52

.38

.45

a Channel dry.

Daily gage height, in feet, at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

2...............

3............... 

4...............

5...............

6...............

7.-....-.----.-.

8...............

9...............

10...............

11............... 

12...............

13...............

14...............

15............... 

16...............

17...............

18...............

19. ..............

20...............

21...............

22...............

23...............

24...............

25.........'......

26............... 

27...............

28............... 

29...............

30...............

31...............

Jan.

0.72 

.70

.70

.70

.70

.72

.70

.70

.70 

.70

.69

.69

.68 

.65

.64

.62

.62

.62

.61

.60

""."62" 

.61 

.61

.60

Feb.

-------

.......

0.83

.......

Mar.

0.49

OK

.38

.38 

.54

79

on

.80 

.62

.89

.72

.70

.62

.66

.60

.60 

.58 

.52 

.51

.64

Apr.

0.60 

.66

Cfi

.64

.75

.74 

.68

.69 

68

.68

.70

.69

.80

.76

.68

.71

.76 

.72 

.72

May.

"i."22"

1.05

:::::::

.80

.60

56

.50 

"".'45"

.35

June.

.......

0.28

OK

:::::::

Cfi

.49

.51

50

.60

. .58 

.60 

.56

July.

0.80 

.75

.74

.71

.69

.68

.75

.71

.69

.52

.50

.65

.55 

.55 

.55 

.52

Aug.

0.71

"".'79"

79

.74

.72

.75

.74 

........

.75

.76 

.72

.75

.68

.68

.70

.68

.66 

.75

Sept.

.......

0.89

.84

01

.90

.80

.75 

.79

.75

.75

.74 

.79

.78

.78

.75

.75

.80

.78

.75

.74 

.73 

.72 

.71

.85

Oct.

O.S2

.79

""."75"

.74

.74

79

.75

.75 

.78

7Q

.76

.78

80

.86

.85 

.82

.74

Nov.

0.80

.84

7K

.75

.80

""."85"

QO

7Q

Qfi

.80

79

.75

.75

.75

.78 

.75

.78

Dec.

0.78 

80

7C

.72

79

70

.74

.74 

.72

79

.71

79

.75 

.78

.72

.74

7S

.75

.75

""."so

.75 

.72
ISLAND OF HAWAII. 227

Daily discharge, in second-feet, at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for

1912.

Day.

1. ....... .......

2 

3!!!!!!!!!!!!!!!

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.25

.25 

.25

.10

.10

.10

.10

.25

.10

.10

.10

.10

.10

.10

.10

.05 

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Feb.

(a)

(a)

(a)

(a)

(« )

1.20

3.00

5.00

6.00

4.00

2.00

1.00

.50

.50

.30

.......

Mar.

0.10

.10 

.05

(a)

(a)

(a)

.10

.10

.75

2.20

.80

.05 

2.05

3.00

4.00

.25

.10

.05

.10

.05

.05

.05

05

.05

.05

.05

2.00

Apr.

0.50

.20 

.05

.10

.10

.05

4.50

4.00

2.00

.40

.10

.10

.05

.10

.10 

.10

.10

.10

.10

.80

.50

.10

.10

.15

.50

oc

.25

.20

.10

May.

0.50

.50 

1.00

6.68

6.00

4.30

2.00

.50

.20

9fi

.20

.20

.20

80

.50

.50 

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

June.

-------

0.05

.05

.05

July.

0.10

.40 

.80

.45

.40

.15

.10

.10

.10

.45

1 00

.40

.15

.30

.10

.10 

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Aug.

0.15

.20 

1.00

.75

.25

.20

.40

95

.45

.40

.30

.15

.45

.50

.50

.25 

.35

.45

.60

.30

.20

.10

.10

.10

.10

.10

.45

.30

.20

.10

.20

Sept.

0.50

.80 

5.00

3.50

2.05

2.35

2.20

.80

60

.45

.75

.45

.45

.40

.75 

.70

.65

.65

.45

.45

.80

.65

.45

.40

.40

3fi

.25

.15

1.50

Oct.

1.10

 .75 

.60

.45

.40

.40

.30

.25

.30

.45

.45

.65

.65

.50

.50

.30 

1.00

.65

.80

.80

.80

3.00

5.00

1.65

1.50

1.10

4.00

4.00

2.00

.40

Nov.

0.80

.50 

4.00

2.00

1.35

"in

.45

.45

.80

5 nn

4.00

1.50

1.10

.65

.20

.80 

2.00

.65

1.50

.80

.75

.45

.45

,45

' .45

.65

.45

1.00

.80

.65

Dec.

2.00

4.00 

.65

.80

.45

.25

.25

.65

.40

.40

.25

.25

.15

.25

.45

.65 

.25

.40

.65

1.00

.45

2.00

5.00

3.00

.45

.60

.80

.45

.25

.20

.20

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days'for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50. '

Monthly discharge at station No. 4 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.... .....................

Mean 

discharge 

in secondfeet.

0.31

.20

.49

.09

.81

CO

.54

.81

Run-off 

(total in 

acre-feet).

19.30

11.80

30.20

5.53

46.60 99 fin

32.10

49.80

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.05

.19

.32

1.01

1.31

1.17

.89

.64

Run-off 

(total in 

acre-feet).

2.98

11.70

19.70

60.10

80.60

69.60

54.70

465.00

Discharge measurements at station No. 5 at 2,700-foot level, near Hilo, Hawaii, in

Date.

Aug. 13

Sept. 27

Nov. 21

Hydrographer.

E.G. Chris tiansen ........................................................

.....do....................................................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet. 

0.24

.59

60

Discharge.

Sec.-ft.

(a)

0.20

.21

I « Channel dry.

NOTE. Bed of stream of sand, silt, and gravel; probably shifting. One channel at all stages. 

This stream is tributary to Wailufeu River.
228 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and KuznetsofE, observers.]

Day.

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23. ..............

24. ............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.58

.55

.54

.55

.55

.58

.56

.54

' .51

.50

.50

.40

.35

(a)

(a)

(<*)

(a)

ft (a)

(a)

(a)

(a)

Feb.

ft(a)

(a)

ft(a)

(a

(a

(a

(°)

(°)

(a)

(a)

(a)

(a)

.71

Mar.

ft(a)

(a)

(a)

ft( tt )

(a)

0.47

.47

.60

.49

.50

.72

60

.59

.42

.51

.46

.31

.00

.00

.00

en

Apr.

.42

.46

48

.50

.50

.48

.42

.41

.50

.50

.44

.50

.44

.51

.52

.52

.52

May.

0.76

.50

(a)

(a)

(<*)

(a)

(a)

(a)

(a)

June.

(a)

(a)

0.40

.38

.41

(d)

(«)

ft (a)

(a)

July.

0.60

.55

.50

.48

(«)

(a

(°)

.50

(a)

(a)

(a)

(°)

(a)

(a)

(a)

(a)

Aug.

(a)

0.60

(a)

.50

.45

.42

.49

(a)

.12

.35

(a)

.34

(a

(a

(a)

.35

Sept.

0.59

.55

.59

.50

.50

.44

.50

.40

.40

.35

.36

(a)

(a)

(a)

(«)

(a)

(a)

(a)

a)

°)

°)

a)

.38

.......

Oct.

0.25

.25

ft(a)

(a)

(a)

(a)

(a)

.32

(a)

(a)

.50

.50

.56

.52

.50

.51

Nov.

0.52

.55

.50

.50

.59

.55

.52

..39

.55

.52

.55

.59

.55

.52

.55

.55

.52

.56

.......

Dec.

0.55

.61

.52

.48

.48

.55

.54

.54

.52

.45

.45

.46

.52

.56

.46

.45

.51

.52

.58

.61

.54

.54

a Channel dry.

Daily discharge, in second-feet, at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for

1911.

Day.

1.. ..........

2.... .....

5............

6............ 

7............ 

8............ 

9............

-10............

Oct.

0.38 

.35 

.31

.28

.24

.21 

.21 

.20 

.20 

.20

N.ov.

0.10 

.10 

.10

.12

.15

.15 

.16 

.17 

.18 

.19

Dec.

0.15 

.12 

.11

.12

.14

.12 

.11 

.14 

.18 

.14

Day.

11............

12............ 

13

15............

16............ 

17............ 

18............ 

19............ 

20............

Oct.

0.20 

.20 

.19

.18

.17

.16

.15 

.15 

.15 

.15

Nov.

0.19 

.20 

- .20

.20

.20

.20 

.20 

.20 

.20 

.20

Dec.

0.16 

.14 

.20

.28

.28

.48 

.25 

.25 

.26 

.26

Day.

21............ 

22............

93

24............

25............

26............ 

27............

28............ 

29............ 

30............ 

31............

Oct.

0.15 

.14

 10

.12

.11

.10 

.10 

.10 

.10 

.10 

.10

Nov.

0.20 

.21

.21

.21

.20 

.20 

.21 

.19

.18

Dec.

0.24 

.21 

.20

.18

.28

.20 

.20 

.20 

.21 

.20 

.20
ISLAND OF HAWAII. 229

Daily discharge, in second-feet, at station No. 5 at 2,^00-foot level, near Hilo, Hawaii, for

1912.

Day.

1. ..............

2...............

5...............

6...:...........

7...............

8...............

9...............

10...............

11...............

12...............

13............... 14..:............

15...............

16.............

17...............

18...............

19......... ..

20...............

21...............

22............

23...............

24...............

25...............

26..............

27...............

28...............

29......... .

30...............

31...............

Jan.

0.20

.20

.20

.15

.15

.15

.15

.20

.15

.10

.10

.10

.05

.05

.05

.05

.05

(a)

(a)

(a)

(a)

(a)

a)

a)

a)

a)

a)

Feb.

(a

(a,

!

a

a

fay

fa}

I<M

fa

(a

fa

(a)

fa}

A QA

.40

en

1.00

.60

.40

.30

.20

.10

.10

Mar.

(a)

(a)

(»)

a

a

a

a

(a)

0.10

.10

.20

.10

.10

.30

Oft

.20

n/\

.20

.05

.10

.10

.10

(a)

fa)

fa)

.10

.40

Apr.

0.20

.10

.05

.05

.10

.10

.20

.15

.10

.10

.10

.10

.10

.05

.05

.05

.05

.10

.10

.05

.10

.05

.05

.10

.10

.10

.10

.10

.10

May.

0.35

.10

(a)

fa\

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

fa)

June.

(a)

(a)

(a) ^ *

0.05

.05

.05

(a)

(«)

(a)

(a)

(a)

July.

0.20

.15

.10

.10

.10

fa"!

a)

a)

a)

(a)

(a\

(a)

(a)

fai

.

Aug.

(a)

0.20

.10

.05

.05

.10

(a)

.05

(a)

(a)

fa)

(a)

(a)

("}05

Sept.

0.20

.15

.20

.10

.10

.05

.10

.05

.05

.05

.05

(a)

(a)

fa)

(a)

fa)

(a)

fiH

05

Oct.

(a)

(a)

(a)

(a)

^

(a)

fa)

0.10

.10

.15

.10

.10

.10

Nov.

0.10

.15

.10

.10

.20

.15

.10

.05

.15

.10

.15

.20

.15

.10

.15

.15

.10

.15

Dec.

.20

.10

.10

.10

.15

.15

.15

.10

.05

.05

.10

.10

.15

.10

.05

.10

.10

.20

.20

.15

.15

a Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 

station No. 50.

Monthly discharge at station No. 5 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

0.18

10

.20

.07

10

09

.09

.07

Run-off 

(total in 

acre-feet).

10.90

10.70

12.30

4.30

7.48

S

CO

5.36

4.30

Month.

1912 Continued.

July... .......................

Mean 

discharge 

in secondfeet.

0.02

.05

08

.08

.20

.15

T?

.10

Run-off 

(total in 

acre-feet).

1 19

3 n7

4.76

12.30

8.93

71.00
230 WATER RESOURCES OP HAWAII, 1912.

Discharge measurements at station No. 6 at 2,700-foot level, near Hilo, Hawaii, in 1912.

Date.

Aug. 13

Sept. 27

Nov. 21

Dec. 27

Hydrographer.

E.O.Christiansen. .......................................................

.... .do... i..... ..........................................................

.....do....................................................................

.....do....................................................................

Gage 

height.

Feet.

0.10

.38

Discharge.

Sec.-ft.

(a)

(a)

0.05

a Channel dry.

NOTE. Bed of stream of sand, silt, and gravel; probably shifting. One channel at all stages. 

This stream is tributary to Wailuku River.

Daily gage height, in feet, at station No. 6 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Billkov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14.. .............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

.31

.30

.32

.34

.38

.35

.32

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a\

(a)

(a)

(a)

(a)

(a)

(°)

(a)

Feb.

S

a)«i

(0)

(a)

f«i

(a)

(a)

(a)

(a)

(a)

(a)

«

(a)

0.52

Mar.

fti a i

(a)

(a)

(a)

(a)

(«)

0.29

.36

.41

.34

.31

.66

.58

.51

.41

.49

.42

(a\

(a)

(a)

Apr.

0

09

.33

.34

.40

.38

.34

.31

.40

.42

.46

.46

.41

.39

.43

.50

.51

KA

May.

50

(a)

(a)

(a)

(a\

(a\

(a.)

(a.)

June.

00

W

(a)

(«)

(a}

(a)

(a}

(«)

(°) ft 

July.

0.58

.32

.22

.22

W(«)

(a)

.40

(a)

(a)

(a)

.49

Cat

«

(a)

ti

Aug.

(a)

0.58

(a)

.44

.41

.35

.41

(a) u

.15

(a)

.14

K

(a

(a

(a)

.18

Sept.

0.55

.40

.44

.34

.24

.24

.30

.25

.30

25

(a)

fa)

(a)

(a)

U

(a)

(a)

i a »

(a)

.28

Oct.

0.25

.. .20

(a)

(a)

(a\

(a\

(a)

(a)

(a)

(a)

.35

.32

.38

(a)

(a)

.30

Nov.

0.40

.32

ft (a)

.35

.39

.36

.30

.38

.34

.30

.20

(0)

.30

(a)

(a\ y

Dec.

.32

(a)

(a)

(a)o,

.31

.20

(a\

(a1)

(«;.'21

.18

(a)

(a)

.20

.32

.36

(a)

.21

a Channel dry.

Daily discharge, in second-feet, at station No. 6 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1............

2... .........

3............ 

4............

5............

6... ......... 

7.... ........

8............

9............ 

10............

Oct.

0.10

.10

.10 

.10 

.10

.10 

.10

.10

.05 

.05

Nov.

(a)

(a)

0.01 

.01 

.02

.03 

.03

.03

.03 

.04

Dec.

0.01

(a)

(a) 

.02 

.02

(«)

(a)

.01

.03 

.02

Day.

11............

12............

13............ 

14............ 

15............

16............ 

17............

18............

19............ 

20............

Oct.

0.05

.05

.04 

.03 

.03

.02 

.01

.01

(a) 

(a)

Nov.

0.04

.04

.05 

-05 

.05

.05 

05

.05

.05 

.05

Dec.

0.02

.03

.05 

.10 

.10

.05 

.05

.05

.05 

.05

Day.

21............

22............

23............ 

24............ 

25............

26............ 

27.'...........

2*... .........

29............ 

30............

31............

Oct.

(°)

fa)

&

8

(a) 

fa)

(a)

w

Nov.

0.05

.05

.05 

.05 

.05

.05 

.02

.02

.01 

.01

Dec.

0.03

.01

(a) 

(a) 

.05

.05 

.02

.02

.05 

.05

.05

Channel dry.
ISLAND OF HAWAII. 231

Monthly discharge at station No. 6 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

December ....................

1912.

January ......................

May..... .....................

»

Mean 

discharge 

in secondfeet.

0.03

.03

.03

.01

.10

.10

.08

.01

Run-off 

(total in 

acre-feet).

2.26

2.06

1.95

.62

5.72

4.76

.62

Month.

1912 Continued.

July..........................

August. ......................

September. ...................

Mean 

discharge 

in secondfeet.

0.00

.02

.02

.03 

.04

.01

.01

.04

Run-off 

(total in 

acre-feet).

0.00

1.23

1.23

J.. i\J

2.46

.60

.62

25.80

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall; diagram prepared from 

rainfall record at camp near station No. 50.

Discharge measurements at station No. 7 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 13.. .....................

Gage 

height.

Feet. 

0.33

.21

Discharge.

Sec.-ft. 

0.04

Date.

Nov. 21............ ...........

Dec. 27.. .....................

Gage, 

height.

Feet. 

0.39

Discharge.

Sec.-ft. 

0.06

.11

NOTE. Bed of stream of sand, silt, and gravel; probably shifting. One channel at an stages. 

¥his stream is tributary to the Wailuku River.

Daily gage height, in feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15............... 

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23............... 

24............... 

25...............

26............... 

27............... 

28...............

29...............

30...............

31...............

Jan.

0.32

.31

.30

.35

.36

.40

.39

.36

.31

.30

.28

.25

.10

(a)

(a)

(a)

(a) 

(a)

(a) 

(a)

""(«)"

rl(«)

(a)

Feb.

(a)

(a)

C«)

(«)

(a)

(«)

(«)

0.24

.20

.15 

.10

(a)

(a)

.32

.74

.......

Mar.

0

00

.31

.30

.30

.32

.32

.35

.41

49

7K

.49 

.41

>5Q

.51 

.39

.44 

""."39"

.32

.30

9Q

.29

.34

Apr.

O Q1

.33

.38

.41

.44

.44

.36

39

.38 

.36

.40

4.H

.48 

.44

.38 "Mi"

.44 

.44 

41

May.

0.69

.50

40

.......

30

.24

.25 

""."2!"

""26"

(a)

June.

(a)

(a)

O oq

.20

.30

.28

""."si"

.28 

.32

OQ

July.

0.48

.45

.42

.39

.35

.32

.38

.38

.35

.34

.32 

.38

.26 

.20 

.20

.20

Aug.

0.42

.42

.30

.35

.30

.35

.38

.24

qo

.36 

.38

.38

""."26"

.20 

.23 

.20

.20 

.34

Sept.

0.44

.45

.58

.42

A(\

.35

.39

.32

.32 

.36

.34

00

on

.31

.29

.25 

.22

.21

.21

91

.20

.40

Oct.

0.39

.35

.25

.21

.21

.21

.32

.31

.35

01

.32

.38

Af\

.......

""."48" 

.42

.40

.40

Nov.

0.42

.41

.35

.38

4.Q

.46

Af)

48

.40

.40

.39 

.38

.40 

"".'38"

.35 

.32

.40

Dec.

0.42

.42

.38

.36

.35

.41

.38

.34

.32

.30

.28

.29

.34 

.36

.30

.31

.34

.40

""."42

""."42 

.38

.31

a Channel dry.
232 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for

Day.

1..... ....... 

2... .........

2............

4............ 

5............

6............ 

7............

8............

9............

10............

Oct.

0.10 

.10

.10

.10 

.10

.10 

.10

.05

.05

.05

Nov.

0.01 

.01

.01

.03 

.05

.05 

.05

.05

.05

.05

Dec.

0.01 

.01

.01

.02 

.02

.03 

.03

.03

.03

.03

Day.

11............ 

12............

13............

14.... . . . 

15............

16............ 

17............

18............

19............

20............

Oct.

0.05 

.05

.05

.05 

.05

.05 

.05

.05

.05

.05

Nov.

0.05 

.05

.05

.10 

.10

.05 

.05

.05

.05

.05

Dec.

0.03 

.03

.05

.10 

.10

.05 

.05

.10

.10

.05

Day.

21............

22............

23............

24............ 

25............

26............ 

27............

28............

29............

30............ 

31............

Oct.

0.05 

.05

.04

.04 

.03

.03 

.02

.02

.01-

.01 

.01

Nov.

0.05 

.05

.05

.05 

.05

.05 

.05

.05

.05

.02

Dec.

0.05 

.06

.03

.01 

.05

.05 

.04

.02

.05

.05 

.03

Daily discharge, in second-feet, at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for

1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12............... 1^1

14............... if;

16...............

17...............

18...............

19

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.05

.05

.05

.05

.05

.......

Feb.

fi qe

Mar.

0.05

.05 

.10

.35

.10

.05

.20

.15

.10fif;

.05

.05

Apr.

0.05

.05

flK

.05

.05

.05

flK

.05

.05

.06

.10

.05

.05

.05

.05

flK

.05

May.

0.30

.10

""."65"

June. July.

0.10

.05

.05

.05

.05

.05

""."65"

.05

.05

Aug.

0.05

.05

.05

flK

.05

O r.

.05

.05

Sept.

0.05

.05

.20DP;

.05

np;

.05

.05

.05

.05

Oct.

0.05

.05

.05

.05

.05

.10

.05

.05

.05

Nov.

0.05

.05

flK

.05

.10

.10 

.05

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

Dec.

0.05

.05

.05

.05

.06

.05

.05

......

.05

.05

.05

.05

.05

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 

near station No. 50.
ISLAND OF HAWAII. 233

Monthly discharge at station No. 7 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October. .....................

1912*

April............. ............

May

Mean 

discharge in 

secondfeet.

0.05

.05

.04

.02

.10

.10

.05

.05

Run-off 

(total in 

acre-feet).

3.30

2.82

2.60

1.23

5.75

6.15

2.98

3.07

Month.

1912 Continued.

July..........................

Mean discharge in secondfeet.

0.02

.05

.05

.07

.20

.15

.05

.08

Run-off 

(total in 

acre-feet).

1.19

3.07

3.07

4.17

12.30

8.93

3.07

55.00

Discharge measurements at station No. 8 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.J

Date.

Sept. 27..... ..................

Gage 

height.

Feel. 

0.92

.73

Discharge.

Sec.ft. 

0.16

Date.

Nov. 21.. .....................

Gage 

height.

Feet. 

1.05

1.19

Discharge.

Sec.ft. 

0.84

1.89

NOTE. Bed of stream composed of gravel and small cobbles; is fairly smooth; shifting; one channel at 

all stages. This stream is tributary to Wailuku River.

Daily gage height, in feet, at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

1...... .........

2...............

3...............

4...............

5...............

6...............

7............... 

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20... ............

21...............

22...............

23...............

24...............

25...............

26............... 

27...............

28............... 

29...............

30...............

31...............

Jan.

0.76

.75

.74

.76

.78 

.81

.79 

.75

79

.71

.70

.70

.50

(a)

(a)

a

a

a

a 

a

a

Fel

(a

(a

"(a

(a" 

(a<

(a

(a

(a

('

(a

«

(a

rt (

1 (

....

).

18

)1

..

--

Mar.

0.81

79

.74

.70

.78 

.74

.81

98

.99

1.32

1.02

.82

1.01

1.05

1.00

.88

.90

.88

.82

.78

.75 

.71

.81

Apr.

0.71

.74

.84

.86

"i."ii"

1.04

QQ

.85

.99

.90

RQ

.89

.86

1.05

1.01

.89

.96

1.02

1.00

May.

1 19

.90

.......

.81

.72

.71

.69

.61

CQ

.50

June.'

0 4ft

.35

.50

.40

.65

.60

.84

.80

QA

.80

July.

1.14

1.10

1.00

.95

""."90"

.85 

.85

1.00

.88

.81

.80

.89 

.82

.75 

.70

Aug.

0.80

99

.88

.90

.88

.90 

.90

.80

.91

.95

.89

.91

.80

.80

80 . 80

.79 

90

.......

Sept.

1 19

1.14

1.20 

1.10

1.00 

94

1.01

.99

1.00

.96

.99

QC

.91

.89

.95

.85

.82

7Q

.75

7C

.74 

.74

1.19

Oct.

1.05

.98

.84

.81

.81 ""."so"

""."ss"

.82

1.02

.85

.85

1.08

1.26

1.19

1.05

.98

1.02

Nov.

1.05

1.20

.95 

1.00

1.20

1.20

1.11

.95

1.15

1.16

1.14

1.06

1.02

1.10

1.02

.98 

.95

1.00

Dec.

1.12 lit;

1.15

1.12

1.12 

1.15

1.14 

1.11

1.04

.94

.91

.92

1.01

1.18

1.01

1.02

1.05

1.14

1.18

1 90

1.12 

1.12

a Channel dry.
234 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for

1911.

Day.

1... .........

3... .........

5............

6............ 

7............

8............

9............ 

10............

Oct.

2.88

2.22

1.68

1.20

.84

.52 

.48

.44

.36 

.28

Nov.

(«)

(a)

(a)

0.01

.05

.17

.44

.84

1.36

.24

Dec.

0.05

.03

.02

.03

.05

.02 

.02

.02

.05 

.02

Day.,

11............

12............

13............

14............

15............

16............ 

17............

IS............

19............ 

20............

Oct.

0.24

.20

.18

.17

.15

.15 

.14

.12

.10 

.05

Nov.

0.82

.40

.48

60

.72

.60 

.66

.72

.78 

.84

Dec.

0.04

.01

.24

1 08

1 60

.12 

.72

.60

.90

.28

Day.

21............

22............

23............

26............ 

27............

28............

29............ 

30............ 

31............

Oct.

0.05

.05

.05

AO

.01

00

(a)

(a)

(a) 

(a) 

(a)

Nov.

0.90

96

1.02

1.08

1.20

.56 

.28

.28

.17 

.05

Dec.

0.12

.05

.05

.28

.10 

.05

.05

.22 

.20 

.12

o Channel dry.

Daily discharge, in second-feet, at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for

1912.

Day.

1.. .............

2...............

3...............

5...............

6.-------.--....

7...............

8...............

g

10.....-.-.--.....

11...............

12...............

10

14...............

IS..-- ...........

16...............

n.. ............. \%... ............

19

20. ..............

21...-. ........ .-

22...............

23...............

24...............

25......--..-....

26. ..............

28.....-....----.

29...............

30....-...-..-...

31...............

Jan.

0.03

.03

.03

.02

.02

.03

.05

.05

.05

.02

.01

.01

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

Feb.

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0

0.7

8

8

8

8

8

8

8

8

8

Mar.

0.80

.40

.05

.05

.02

.01

.00

.05

.05

.02

.05

.50

.60

3.35

.70

.10

.70

1.20

1.00

.90

.60

.15

.20

.20

.15

.10

.02

.01

.05

1.00

Apr.

0.50

.05

.01

.02

.10

.15

3.00

2.50

2.00

1.30

.85

.55

.60

.10

.55

.20

1.10

.20

.20

.15

.90

.70

.20

.05

.45

.70

.70

.60

.30

.70

May.

1.40

1.70

1.00

1.90

2.20

.20

.10

.10

.10

.05

.05

.05

.05

.20

.15

.05

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

June.

0.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.05

.10

.05

.05

.05

July.

0.20

1.00

l.SO

1.20

.60

.40

.30

.20

.15

.15

2.00

1.00

.60

1.00

.15

.10

.10

.10

.05

.05

.05

.05

.05

.45

.30

.20

.10

.05

.01

.01

.01

Aug.

0.05

.05

1.00

.55

.15

.10

.20

.15

.20

.20

.10

.05

.25

.30

.40

.20

.20

.25

.40

.20

.10

.05

.05

.05

.05

.05

.20

.40

.20

.10

.10

Sept.

0.80

1. £0

3.00

4.00

1.90

1.50

2.00

1.20

.60

.50

.35

.65

.55

.60

.45

.55

.30

,40

.25

.20

.40

.15

.10

.05

.05

.05

.05

.02

.02

1.90

Oct.

0.90

.50

.60

.10

.05

.05

.05

.05

.05

.15

.10

.70

.15

.15

.15

.05

2.00

1.10

2.65

1.50

1.50

2.00

4.00

1.90

.90

.50

5.00

2.00

2.20

1.50

.70*

Nov.

0.90

.20

3.00

1.50

2.00

.20

.40

.60

2.00

3.50

3.00

2.00

1.30

.40

.10

1.60

2.00

1.70

2.00

1.50

.95

.70

1.20

.90

.70

.50

.40

1.00

.80

.60

Dec.

2.00

2.50

1.35

1.60

1.60

1.35

1.35

1.60

1.50

1.30

.85

.35

.25

.30

.65

1.85

.65

.70

.90

1.50

1.50

2.50

5.00

3.00

1.85

2.00

2.00

1.35

1.35

.80

.40

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near'station No. 50.
ISLAND OP HAWAH. 235 

Monthly discharge at station No. 8 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

February. ...................

May..........................

Mean 

discharge 

in secondfeet.

0.40

.52

.24

.01

.27

.42

.67

.30

Run-off 

(total in 

acre-feet).

25.00

31.40

14.90

.61

15.50

OK Qfi

39.90

18.40

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.63

.39

.20

.80

1.07

1.26

1.48

.58

Run-off 

(total in 

acre-feet).

3.75

24.00

12.30

47.60

65.80

75.00

91.00

420.00

Discharge measurements at station No. 9 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 13. .....................

Sept. 27. .....................

Gage 

height.

Feet. 

0.48

.45

Discharge.

Sec.-ft. 

0.14

.08

Date.

Nov.21. .....................

Dec. 27............. ..........

Gage 

height.

Feet. 

0.60

.73

Discharge.

Sec^ft. 

0.46

1.47

NOTE. This stream is tributary to Wailuku River.

Bed of stream of sand, gravel, and small cobbles; is fairly smooth and probably only slightly shifting. 

One channel at all stages.

Daily gage height, in feet, at station No. 9 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19............... 

20...............

21...............

22............... 

23............... 

24...............

25...............

26............... 

27............... 

28............... 

29...............

30...............

31...............

Jan.

0.58

.55

.52

.54

.55

.58

.55

.52

.51

.51

.50

.50

.48 

.46

.42 

.41

.40

.40 

.40 

4n

......

.40 

.40

.39

Feb.

0.41

.41

.40

.40

.38

.38

.35

.50

.42

.40

.39 

.36

.31

.53 

.88

-------

Mar.

0.57

.55

.52

.52

.55

.55

.56

.61

7Q

.90

.80

.70 

.97

"".'§9'

.82

.72 

.81

.70

.57 

.49 

.46 

.45

.52

Apr.

0.55

.59

.61

.61

fiQ

.67

.62

.58

.64 

.54

.56

.59 

.59

fio

.65 

.59

.60

.67 

.63 

.62

May.

0.73

.50

AK.

"Mo"

.38

"".'36"

.23

"".'26'

.10

June.

+0.05

+ .10

30

.23 

"""46

.38

.52

.50 

.54 

.49

July.

0.65

.60

.58

.58

.51

.50

.54

KA

.54

.......

A.^

""."45"

.58

.42 

.35 

.22 

.20

Aug.

0.42

.63

.48

.49

.44

.50

.50

.44

49

.52

.48

.48

.44 

.48 

.45

.42

.41

.52

Sept.

0.70

.64

.70

.62

.60

.54

.62

.58

.56

.55 

.58

.55

.54 

.52

.51

.50 

.48 

.48

.45 

.45 

.45

.69

Oct.

0.62

.60

.46

.44

.45

.45

.51

.49

.61

.50

.52

.54

.59

""72"

,65. 

.59

.68

Nov.

0.78

.68

.55

.56

.55

.72

.68

.60

.65

.71

""."69"

.61

.58 

.60

.58

.58 

.54

.58

Dec.

0.60

.71

.62

.59

.60

.70

.61

.58

.54

.52

.52

.54

.56

.58 

.45

.40

.42

.60

.68

""72 

,61 

.61
236 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet,*at station No. 9 at 2,700-foot level, near Hilo, Hawaii, for

1911.

Day.

1. ..........

2...........

3...........

4...........

5...........

6...........

7. ....... ...

8...........

9...........

10...........

Oct.

3.60

3.08

2.56

2.06

1 58

1.04

.98

.86

74

.62

Nov.

-0.15

.15

.15

.32

50

.56

.62

.68

.74

Kfi

Dec.

0.32

is

.15

.18

9Q

IS

.15

1C

3fl

OQ

Date.

11...........

12...........

13...........

14...........

15

16...........

17...........

18...........

19

on

Oct.

.62

.56

.56

cc

.50

.50

.50

.43

on

Nov.

.0 62

68

74

80

Qrt

56

68

80

Qfi

98

Dec.

0.32

.29

.80

1.10

2.56

3.86

4.38

3.34

2 30

1.34

Day.

21...........

22............

23...........

24...........

25...........

26...........

27...........

28...........

90

30...........

31...........

Oct.

0.36

.32

.29

.29

.26

.18

.18

.15

.15

.15

.15

Nov.

1.10

1.34

1.46

1.58

1.70

.80

.56

.56

en

Dec.

0.56

.46

43

.32

7 f\f\

1.70

.43

.36

.74

.62

.50

Daily discharge, in second-feet, at station No. 9 at %,700-foot level, near Hilo, Hawaii, for

1912. '

Day.

1..... ..........

2............... 

3.. .............

4............... 

£.. .............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

16............... 

17...............

18............... 

19...............

20............... 

21...............

22............... 

23............... 

24............... 

25...............

26...............

27...............

28...............

29............... 

30............... 

31...............

Jan.

0.40 

.40 

.45

.30 

.20

.30 

.30

.45 

.30 

.20

.20 

.20

.15 

.15 

.15

.10 

.10

.05 

.05

.05

AC

.05 

.05 

.05 

.05

.05

.05

.05

.05 

.05 

.05

Feb.

0.05 

.05 

.05

.05 

.05

.05 

.05

.05 

.05 

.05

.05 

05

.15 

.05 

.05

.05 

.05

.05 

.25

3.30 

3.50

4.00 

5.00 

4.50 

4.00

3.00

2 nn

.80

Mar.

0.50 

.50 

.40

.30 

.20

.20

9ft

.30 

.30 

.30

.35 

.55

2.20 

3.60 

2.30

1.10 

4.50

4.10 

3.80

3.45

2.55

1.35 

2.45 

1.80 

1.10

.40

.15

.10

.10 

.20 

3.00

Apr.

1.00 

.50 °.n

.45 

.55

.55 

.50

.40 

.20 

1.05

.90 

60

.50 

.45 

.75

.30

Ort

.35 

.45

.45 

1.05

.80 

.45 

.50 

.50

.90

.70

60

.50 

.60

May.

0.70 

.80

1.45 

2.00

.15 

.15

.15 

.15 

.15

.10 

.10

.10 

.10 

.10

.05 

.05

.05 

.05

.05 

.05

.05 

.05 

.05 

.05

.05

AC

.05

.05 

.05 

.05

June.

.......

------

"6." 65"

.05

""."26"

.15

30

.15

July.

0.10 

.20 

.80

.50 

.45

.45 

.30

.20 

.15 

.30

.30 

.30

.30 

.30 

.30

.20 

.20

.20 

.20

.20 

.15

.15 

.15 

.45 

.30

.05

.05

.05

.05 

.05 

.05

Aug.

0.05 

.10 

1.00

.70 

.15

.15

.15

.10 

.15 

.15

.10 

.10

.15 

.20 

.20

.15 

.15

.15 

.15

.10 

.10

.10 

.15 

.10 

.10

.05

.20

.15

.10 

.10 

.20

Sept.

1.80 

2.00 

2.50

3.00 

1.10

.75 

1.10

.60 

.50 

.40

.30 

.60

.45 

.35 

.30

 .45. 

.40

.30 

.30

.20 

.20

.15 

.15 

.15 

.10

.10

.10

.10

.10 

1.05

Oct.

0.60 

.50 

.30

.10 

.10

.10 

.10

.10 

.20 

.20

.15 

.55

.15 

.20 

.20

.10 

.40

.30 

.45

.50 

.50

1«00 

3.80 

1.35 

.80

.45

5.00

3,00

3.00 

2.00 

1.00

Nov.

2.05 

2.50 

3.00

2.00 

1.00

.60 

.30

.35 

.30 

3.00

2.50 

1.35

1.00 

.50 

.60

.80 

1.00

1.30 

1.20

1.05 

.55

.45 

.50 

.50 

.45

.45

.30

.60

.50 

.45

Dec.

1.50 

2 50 

.50

1.30 

.60

.45

.50

1.10 

.55 

.45

.30 

.20

.20 

.30 

.30

.45

.10

.05 

.05

1.00 

.50

1.50 

3.00 

2.00 

1.00

2.00

1.35

.55

.-55 

.40 

.30

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 9 at 2,70Q-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October. ..................... 

November. ...................

1912-

May..........................

Mean 

discharge 

in secondfeet.

0.80 

.71

1.01 

.16

1 19

1 37

.57

.26

Run-off 

(total in 

acre-feet).

49.50 

42.40

9.84

64 40

QO On

16.00

Month.

1912 Continued. 

June.......................... 

July..........................

August. . ..................... 

September... . ................

November

Mean 

discharge 

in secondfeet.

0.05 

.24

.18 

.65 

.85

1.04

.82

.61

Run-off 

(total in 

acre-feet).

2.98 

14.80

11.10 

38.70 

52.30

61.90

50.40

441.00
ISLAND OF HAWAII. 237

Discharge measurements at station No. 10 at 2,700-foot level, near Hilo, Hawaii, in

Date.

Aug. 13

Sept. 27

Hydrographer.

.....do.. ............

Gage 

height.

Feet. 

0.73

.70

Discharge.

Sec.-ft,

..........

Date.

Dee. 27

Hydrographer.

.....do..............

Gage 

height.

Feet. 

0.98

1.01

Discharge.

Sec.-ft. 

0.17

.59

NOTE. Bed of stream of gravel and small cobbles, shifting. One channel at all stages. 

This stream is tributary to Wailuku Bjver.

Daily gage height, in feet, at'Station No. 10 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

2... ............

3...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17........ .......

18...............

1Q

20...............

91

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30

<M

Jan.

0.86

(a)

(a)

.88

.89

.91

.90

.86

00

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

Feb.

(0 )

(a)

W(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

00

(a)

0.92

Mar.

00CO00

0.85

.91

.82

.75

1.09

1.10

.97

(a)

.86

.80

(a)

CO

(a\

(a)

.92

Apr.

0.75

.82

.85

.90

.99

.93

.89

.80

.86

.74

.81

.88

.82

1 04

.90

.85

.91

.91

.88

.82

May.

1.09

.85

.78

.70

.66

00

00

(a)

(a)

June.

'

(a)

(a)

.60

(a)

(a)

00

(a)

00

00

July.

0.88

.81

80

.80

.80

80

.80

80

.80

.80

.80

.82

.80

.80

.80

.80

Aug.

0.80

.89

.80

.86

.81

.85

.82

79

.72

.70

.70

.81

.70

.70

7C

.71

.71

.84

Sept.

1.00

.96

1.00

.90

.89

.85

.88

.81

.82

.80

.80

.79

.76

.75

.80

.80

.78

.75

.71

.69

.69

.68

.90

Oct.

0.82

.80

.75

.72

.71

.71

.70

.70

.85

.72

.74

.87

.82

.99

.94

.88

.91

Nov.

0.98

.95

.82

.84

.99

1.02

.92

.85

.90

.90

.95

.94

.89

.90

.95

.85

.74

.94

Dec.

0.98

1.01

.91

.89

.88

.98

.92

.88

.82

.78

.74

.75

.81

.85

.72

.72

.75

.88

.95

LOO

.90

.88

a Channel dry.

Daily discharge, in second-feet, at station No. 10 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1............ 2......:.....

3............

4............

6............

7............

8............

10............

Oct.

0.72

.60

.48

.36 

30

.24

.24

.22

9ft

.20

Nov.

a)

a)

°)

0)

*)

CO°)

CO(a)

00

Dee.

00

00

00

0.05

CO

00(a)

.05

.05

Day.

11............

12............

13............

14............ 

15............

16............

17............

18............

19............

20............

Oct.

0.12

.11

.10

.05 

.05

.05

.05

n(a}

00

Nov

00

CO(a)

(.05 

.05

.05

.05

.10

.11

.14

Dee.

0.05

.05

.24

.28

.88

1.95

1.60

1.60

.44

.12

Day.

21............

22............

23............

24............

25............

26............

27............

28............

29............

30............

31............

Oe

(a

(a

(a

(a 

(a.

(a

(a

(a

(a

(a

(a.

t.

)

Nov.

0.17

.20

.28

.32 

.36

.20

.14

.12

.05

.05

Dec.

0.05

.05

.05

(0),4

.17

.05

.05

.36

.32

.30

a Channel dry.
238 WATER RESOURCES OF HAW AH, 1912.

Daily discharge, in second-feet, at station No. 10 at 2,700-foot level, near Hilo, Hawaii, for

1912.

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21......... ...

22.............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30.........

31...............

Jan.

0.15

.15

.15

(a)

(a)

.15

.20

.20

.20

.15

(a)

(a)

(a)

(a)

(a)

Si

Cal

(a)

(a)

(«)

(a)

(a)

(a)

(a)

(a)

o

(a)

Fel

(a

(a

(a

fa

(a

fa>

(a

(a

(a

(a

(a

(a

(a

sa

(a.

0'

1 f

?, f

f, f

If

P

,1

1

3.

)

)

)

)

)

)

)

)

)

)

>0

to

to

0

to

to

0

0

0

0

Mar.

0.10

.10

(a) M

(a)

Si

M

(a)

(a)

(a)

.10

.20

.10

.10

.75

.80

.80

.80

.35

(a)

.15

.10

.05

(a)

(a)

(a)

.20

1.50

Apr.

0.50

.30

.10

.10

.10

.20

.80

.60

.40

.40

.25

.20

.10

.05

.15

.10

.10

.05

.15

.10

.55

.20

.10

.15

.20

.20

.15

.10

.10

.10

May.

0.75

.10

June. July.

0.15

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.05

.05

.05

.05

Aug.

0.05

.20

.05

.15

.05

.10

.10

.05

.10

Sept.

0.40

.50

'1.00

1.50

.40

30

.40

.20

20

.10

.15

.05

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.20

Oct.

0.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.10

.10

.10

.10

40

.15

.10

.30

.30

.30

2 Aft

40"

30

.15

2 HA

1 80

1 50

60

.20

Nov.

0.35

40

.60

.50

.30

.10

.10

.40

.50

EA

OK

.10

20

20

Oft

.20

.20

30

30

9ft

Oft

20

OA

.10

.10

.10

.20

QK

Dec.

0 40

60

.35

.45

9ft

20

.15

OK

OK

.15

.10

.10

.10

.05

.05

.10

.10

.10

.10

.20

.15

60

on

Of)

Kf)

.40

.20

.15

.10

.10

a Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which gage 

heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 

station No. 50.

Monthly discharge at station No. 10 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

Mean 

discharge 

in secondfeet.

0.13

.08

.30

f\A

9ft

.22

.10

Run-off 

(total in 

acre-feet).-

8.10

4.83

1O on

13.10

6.15

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.00

.05

.07

91

.38

.30

.26

.18

Run-off 

(total in 

acre-feet).

0.00

q ft7

4 30

12.50

23.40

17 90

16.00
ISLAND OF HAWAII. 239

Discharge urements at station No. 11 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Aug. 13........

Sept. 27........

Nov. 21........

Dec. 27.........

Date. Gage 

height.

Feet.

0.36

.54

Discharge.

Sec.-ft. 

(a)

(a)

0.04

1.15

o Channel dry.

NOTE. Composed of silt, sand, and gravel, is shifting. One channel at all stages. This stream is 

tributary to Wailuku River.

Daily gage height, in feet, at station No. 11 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

|Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

1..............

2..............

3.............. 

4..............

5..............

6..............

7.. ............

8..............

9..............

10..............

11..............

12..............

13..............

14..............

15.............-L

16.. ........... .'

17..............

18..............

19..............

20..............

21..............

22..............

23..............

24...............

25..............

26..............

27..............

OQ

29...... ...... ..I

Qfl

31..............

Jan.

0.36

.36

.36

40

.40

.35

(°)

(a)

(a)

(a)

(a)

(a)

(a)

fa\

(a)

(a)

(a)

U

(a)

(a)

(«)

Feb.

"(«)"

(a)

(a)

fa)

(«)

(«)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(°)

0.51

Mar.

0.22

(a)

(°)

(a)

0.31

(«)

0.29

.39

.45

.31

.30

.71

.29

.31

(«)

.38

.24

.21

(«)

(«)

.36

Apr.

0.30 

.31

.32

.34

.59

.50

.39

.34

.40

.29

.32

.40

.37

.45

.44

.40

^Q

. 46

.45

.41

May.'

"6.72~

.65

.

.14

(«)

.03

(«)

(a)

(«)

(«)

June.

(a)

(«)

0.15

0)

(a)

(a)

(a)

a)

a)

a)

July.

0.39 

.28

.19

.08

(a)

(a)

(a)

.29

(«)

fa)

(«)

^O

(a)

(a)

(a) y

Aug.

(a)

" "6." 39"

(a)

.28

.19

.39

.35

0) (a)

(a)

(a)

.34

S

a)

a)

(a)

.15

Sept.

.......

0.59

.50

.59

.42

.38

.30

.37

.30

.35

(«)

(«)

(a)

(a)

(a)

a)

«)

a)

(a)

fa)

(a)

(a)

AQ

Oct.

0.40

.22

""(«)"

(a)

(a)

(a)

(«)

(«)

(a)

(")

(a)

.31

.28

.59

.42

.40

.35

Nov.

0.50

.50

.28

.31

.61

.59

.60

.30

.60

.50

.45

.38

.31

.40

.30

.26

.25

.40

Dec.

0.44 

.52

.40

.30

.35

.50

.40

.30

.21

.21

.18

.20

.25

O) (a)

(a)

.21

.35

.48

.53

.40

.39

a Channel dry.

Daily discharge, in second-feet*at station No. 11 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1............ 

2............

3............

4.. ..........

5............

6............

8............

o

10............

c

0

1

1

1

ct.

.55

.65 

.75 

.85 

.00

10

.00

85 

75

65

Nov.

(a) 

(a) 

0.01 

.02 

.05

.05 

.10 

.10 

.15 .a5

Dec.

0.05 

(a)

(") 

(«) 

.15 %Ofl

.20

Day.

11............

12............

13............

14............

15............

16............ 

17............

18............

19............

20............

Oct.

0.30 

30

.25

.20

.15

.10

.10 

.05

.05

Nov..

0.10 

.20

.35

.55

1.00

.75

1.00 

1.10

1.20

Dec.

0.30 

.30

.75

1.40

2.30

.20 

1.20

1.40 

1.60

.55

Day.

21............ 

22............

23............

24............

25............

26............ 

27............

28............ 

29............

30............

31............

Oct.

0.0 

.0 

.0 

.0 

.0

(a 

(a 

(a 

(a

(« 

(a

5 

5 

5 

3 

2

Nov.

1.30 

1T40 

1.50 

1.60 

1.60

.55 

.45 

.45 

.35 

.15

Dec.

0.55 

.30 

.20 

(a) 

1.10

.45 

.30 

.30 

.55 

.45 

.30

a Channel dry. *
240 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 11 at 2,700-foot level, near Hilo, Hawaii,

for 191%.

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29. ..............

30...............

31

Jan.

0.1

.1

.1

00

00

.1

.1

.2

.2

.1

00(a)

(a)

(a)

(a)

a)

a)

a)

a)

a)

(«)

fa)

a)

(a)

(a)

(a)

(a)

a)

(a)

00

(a)

F(

(

(

(

(

Jb.

I

I

X

2

2

')

I

I

2

2

')

*)

0

0

0

«)

I)

')

«)

D a

1,5

2 A

^.0

R 0

1.0

1,0

1.0

5

Mar.

0.5

.1

CO

(0)

00ftrt Wf

.1

(a)

.1

.2

.5

.1

.1

3.8

4.0

4.0

.5

£

(a)

.2

.1

.1

00

00

.1

2 ft

Apr.

0.5

.1.1.1

3.0

2.5

2.5

1 Q

.8

.2

1.0

.1

.1

.4

.2

.4

.6

.5

.2

.6

May.

0.8

1.2

1.0

4.0

5.0

2.8

.5

.1

.1

00

fa

(a,

(a

(a

a)

a)

a)

a)

a)

(a)

(a)

(a)

00

00

(a

(a

(a

(a)

00

(«)

June.

(a)

(a)

0000

(a)

(a)

(a)

(a)

(a)

(a)

(a)

00

00

{«rt 

(°)

(a

(a

(a

(a

(a)

(a)

(a)

(a)

(a)

(«)

(«)

(«)

00

0000

July.

0.1

.1

.2

.1

.1

ft (a)

(a)

00

00

.5 (B)I

.2

00

00

.2

.1

.1

.1

(B)I

(a)

.2

.1

(«)

(a)

(«)

00

.1

.1

Aug.

00

00

1.0

.2

(a)

00.1

.1

.2

.1

a)

a)

a)

a)

a)

(«)

Wi

.2

(«)

(«)

(«)

(a)

ft(a)

^l

.1

.1

.1

.1

Sept.

0.5

.7

1.0

2.5

1.9

.8

1.9

.3

.2

.1

.1

.1

.1

.1

(«)

a)

a)

a)

a)

a)

a)

a)

a

a

a

(«)

00

C^

(a)

Oct.

0.2

.1

.1

00

00

00(a)

(a)

(a)

(a)

(«)

00

(1 a)

.2

.1

.5

.1

.1

.5

.5

.8

4.0

1.9

.3

.2

6.0

2.0

2.0

1.0

.1

Nov.

0.8

.2

2.0

.8

.8

.1

.1

.1

2.2

5.0

4.0

1.9

2.0

.4

.1

2.0

3.0

.8

1.5

.5

.2

.2

.2

.2

.1

.1

.1

1.0

.6

.2

Dec.

1.0

2.0

.4

1.0

.2

.2

.1

.8

.2

.2

.1

.1

.1

.1

.3

ft(a)

00

.2

.1

.1

1.0

4.0

1.5

.7

1.2

1.2

.2

.2

.3

.1

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 11 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

February. ....................

March ........................

May-.... ....................

Mean 

discharge 

in secondfeet.

0.32

.57

.50

.03

.50

.57 

.61

.50

Run-off 

(total in 

acre-feet).

19.80

fQ Qf|

30.50

1.84

28.80

35.00 

36.30

30.70

Month.

1912 Continued.

July..........................

December. ...................

Mean 

discharge 

in secondfeet.

0.00

.08

.08

Q7

.67

1.04

.57

.42

Run-off 

(total in 

acre-feet),

0.00

4.92

4.92

22.00

41.20

61.90

35.00

qno riA
ISLAND OF HAWAII. 241

Discharge measurements at station No. 12 at 2,700-foot level, near Silo, 'Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date

Aug. 13.........

Sept. 27.........

height.

Feet. 

0.89

.84

Discharge.

Sec.-ft. 

1.58

.78

Date.

Nov. 27......................

Dec. 27.......................

Gage 

height.

Feet. 

1.14

1.53

Discharge.

Sec.-Jt. 

a QQ

23.3

This stream is ;rlbutary to Wailuku River.

NOTE. : 

nent. One chant u

CCLULL 1O iLLkJUliCLiy l,\J VT ailU.it U XVI V Cl .

-Bed of stream of gravel and small cobbles, is fairly smooth and regular, and probably perma- " ' ^" "Ael at all stages.

Daily gage hei(, ht, in feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[] Jomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1...... .........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10............... 

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19............... 

20...............

21...............

22...............

23............... 

24...............

25...............

26............... 

27...............

28...............

29. v . ...........

30...............

31...............

Jan.

1.02

1.01

.98

' 1.02

1.02

1.05

1.00

.98 

.95

.92

.90

.89

.85

.82

.80 

.79

.76

.75

.74 

.72

""."75"

.72

.71

.70

Feb.

0.65

.65

.62

.62

.61 

.61

.60

.80

.76

.70

.69

.68

.65

.71 

1.29

.......

Mar.

1.05

1.01

98

.95

.96

.98 

.98

1.34

1 48

1.49

1.33

1.02

1.21

"i"24"

1.19

1.08

1.08

1.04

1.05 

1.01

.99

.94

1.02

Apr.

1.16

1.22

1.29

1.31

1.59 

1.49

1.32

1.19

1.20

1.16

1.17

1.19 

1.16

1.39

1.39

1.22

1.32

1.34 

1.32

1.30

May.

1.55

1.39

.......

1.01

.90

.93

.79

.70 

""."65"

.50

June.

0 40

.36

.......

.71

.67

.91

.......

.80

.......

1.24

1.00 

1.08

.99

July.

1.39

1.24

1.20

1.12

1.08

1.05

1.00

1.04

.......

.85

.75 

1.09

1.08 

.92

.90

.88

Aug.

0.82

1.33

94

.91

1.02

1.02

.84

.89

1.05

.91

.92

.81

.81 

.81

.80

.79 

1.00

Sept;

1.55

1.42

1 V)

1.32

1.26

1.19

1.31

1 1Q

1.04

.99

1.11

1.05

1.02 

1.00

1.02

1.09

.95

.89

.85 

.84

.82

.82

1.41

Oct-.

1.35

1.22

1.09

Qfi

.72

.82

.87 

.90

1.16

OR

.95

1.07

1.14

"i"62~

1.34 

1.25

1.32

Nov.

1.50

1 44

1 19

1.21

1.38

1.51

1.32

1.22

1.39

1 Afi

1.28

1.28

1.32

1.25

1.14 

1.12

1.24

Dec.

1 40

1.54

1

00

1.28

1 OQ

1 44

1.26

1.20 

1.14

1.10

1.05

1.06

1.21

1.24

1.05

1.01

1.12

1 91

1.45

1.35

1.28

Daily dischargle, in second-feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for

1911.

Day.

1............

2............ 

3............

4............

6............ 

7............ 

8............

9............ 

10............

O

53 

44 

3f

2£

?,1

IS 

14 

V, 11

1C

14694°-

3t.

.0.1

0

.0

,0

.0 

.0

5

.0 

.0

Nov.

1.1 

1.1 

1.1

2.0

4.2

5.6 

7.3 

9.3

12.0 

10.0

Dec.

3.4 

2.5

2.3

2.5

2.8

2.0

1.7 

1.9

2.3 

1.7

Day.

11............ 

12............ 

13............

14............ 

15............

16............ 

17............ 

18............

19............ 

20............

Oct.

7.3 

6.6 

6.4

5.3

5.9

5.6 

5.4 

4.2

3.9 

3.4

Nov.

11.0 

12.0 

13.0

14.5 

16.2

14.0 

15.0 

16.2

17.4 

18.6

Dec.

2.3

2.0 

11.0

15.6 

36.0

97.0 

127.0 

133.0

137.0 

93.0

Day.

21............

22............ 

23............

24............ 

25............

26............ 

27............

28............

29............ 

30............ 

31............

Oct.

2.8 

2.5 

2.3 

2.1 

1.9

1.6 

1.5 

1.3 

1.2 

1.1 

1.1

Nov.

19.8 

21.7 

23.8 

25.9 

28.8

14.0 

7.3

8.0 

5.4 

4.0

Dec.

37.8 

18.0 

12.5 

10.0 

40.5

22.4 

18.0 

17.4 

37.8 

36.9 

36.0

-WSP 336 14 16
242

Daily di.

WATER RESOURCES OF HAWAII, 1912.

, in second-feet, at station No. 12 at 2,700-foot level, near Hilo, Hawaii, 

for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

7...............

9...............

10...............

11............... 

12...............

13...............

15. ..............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23. ..............

24...............

25...............

26...............

27...............

28...............

29...............

QA

31...............

Jan.

2.80

2.80

2.80

2.70

2.30

2.80

3.40

2.50

2.30

2.00 

1.70

1.50

1.40

1.10

.90

OA

.80

.70

.70

.50

.50

.50

.40

.40

,50

.50

.40

30

30

OA

Feb.

0.20

.20

.20

.20

.20

.20

.10

.10

.10

.10

.10 

.10

.70

.50

.30

.30

.30

.20

.30

9.70

20.00

30.00

36.00

28.00

20.00

10.00

6.00

4.00

4.00

Mar.

3.80

3.60

3 40

2.70

2.30

2 9A

2.00

2.00

2.10

2.30

2.30 

12.00

19.80

20 40

2.80

7.20

7.70

8.00

6.40

3.90-

3.90

3.50

3.20

3.40

2.70

2.40

1.90

2.80

15.00

Apr.

9.00

6.00

7.30

9 70

10.50

33.00

32.00

97 **n

20.40 

11.00

9.00

6 40

6.60

5.60

5.90

6.40

5.60

14.50

14.50

7.30

9.00

11.00

12.00

11.00

10.00

6.00

7 00

May.

16.00

17.00

15.00

24.50

30.00

10.00

5.00

3.00

3.00

3.00 

3.00

2.70

2.10

1.80

1.50

1.60

1.80

1.50

1.30

1.00

.70

.70

.70

.50

.20

.20

.20

.10

.10

June.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10 

.20

.30

.30

.20

.90

1 60

1.40

1.10

.90

.70

2.00

4.00

6.00

8.00

2.50

3.90

2.40

2.00

July.

2.00

3.00

8.00

6.60

4 70

4.30

3.90

3.40

20.00 

15.00

5.20

4.20

3.20

2.80

2.40

2.00

1.70

1.40

1.10

.80

.50

4.00

4.00

3.90

1.70

1.50

1.30

1.00

1.00

Aug.

0.90

1.00

11.50

5.00

3.00

1.90

1.60

2.80

1.90 

1.00

1.40

2.40

3.40

1.60

1.60

1.70

2.00

1.50

1.10

.80

.80

.80

.70

.70

2.50

2.00

1.50

1.00

2.00

Sept.

18.00

20.00

26.00

32.00

24.50

22.40

11.00

8.60

7.50

6.40 

10.50

6.40

3.20

2.40

4.40

3.80

3.40

2.80

2.50

2.80

4.00

2.00

1.40

1.30

1.10

1.00

.90

.90

15.60

Oct.

12.50

7.30

4.00

2.10

40

60

.90

1.10

1.30

1.50 

5.60

2.30

2.00

2.00

1.50

10.00

3.70

5.20

5.00

3.00

25.00

35.00

29.60

12.00

8.30

35.00

30.00

25.00

.18.00

12.00

Nov.

23.00

25.00

17.40

12.00

6.40

6.90

14.00

34.00

30.00 

28.00

11.00

7.30

7.00

14.50

22.00

18.60

19.00

17.40

9.30

9.30

11.00

9.60

8.30

5.20

4.70

12.00

10.00

8.00

Dec.

19 nn

30.00

15.00

11.00

o 3n

17.40

8.60

6.60

5.20 

4.20

3.40

3.50

6.90

8.00

3.40

2.70

4.70

10.00

6.90

18.00

34.00

25.00

18.00

20.00

22.40

12.50

9.30

6.00

5.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 12 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

Mean 

discharge 

in secondfeet.

10.30

31.10

1.40

5.93

E CO

19 nn

5.33

Run-off 

(total in 

acre-feet).

718. 00

1,920.00

86.10

341. 00

714. 00

328.00

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

1.38

4.25

2.61

Q IJH

10.00

14.70

12.00

6.98

Run-off 

(total in 

acre-feet).

82.10

261.00

160.00

522.00

615.00

875.00

738.00

5,070.00

NOTE. One channel; bed sand and silt; shifting. This stream is tributary to Wailuku River.

The following discharge measurement was made at station No. 12A by E. O. 

Christiansen: 

December 27, 1912: Gage height, 0.48 foot; discharge, 0.
ISLAND OF HAWAII. 243

Daily gage height, in feet, at station No. 12A at 2,700-foot level, near Hilo, Hawaii, for

1912.

[A. Fataeff, observer.]

Day.

1.........................

2.........................

3.......... ...............

4......... ...............

5.........................

6.........................

7.........................

8.........................

9.........................

10.........................

Dec.

0.52

.42

.41

.42

.46

.42

Day.

11.........................

12.........................

13.........................

14.........................

15.........................

16.........................

17.........................

18.........................

19.........................

20.........................

Dec.

0.40

.39

.39

.42

.44

.38

.38

.40

Day.

21.........................

22.........................

23.........................

24.........................

25.........................

26.........................

27.........................

28.........................

29.........................

31.........................

Dec.

0.42

.45

.46

.42

.42

Discharge measurements at station No. 13 at 2,700-foot level, near Hilo, Hawaii, in 1912, 

[E. O. Christiansen, hydrographer.]

Pate.

Aug. 13.. .....................

Sept. 27..... ..................

Gage 

height.

Feet. 

0.70

.52

Discharge.

Sec.-ft. 

2.03

.69

Date.

Nov. 27...... .................

Dec. 27. ......................

Gage, 

height.

Feet. 

0.90

1.39

Discharge.

Sec.-ft. 

5.36

21.2

NOTE. One channel; bed sand and silt; shifting. This stream is tributary to Wailuku Eiver.

Daily gage height, in feet, at station No. 13 at 2,700-foot level, near Hilo, Haivaii,for 1912. 

[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and KuznetsofE, observers.]

Day.

1......... ...... 

2...............

3...............

4...............

5...............

6...............

7............... 

8...............

9...............

10................

11...............

12...............

13...............

14............... 

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22............... 

23...............

24...............

25...............

26............... 

27...............

28...............

29...............

30...............

31...............

Jan.

.......

.71

.75

.78

.75

.70

.68

.65

.62 

.55

.52

.48

.44

.32 

.30 

.30

.30

""."si"

OA

.30

OQ

Feb.

.......

"6." 16"

.10 .11

.11 .11

.40

.33 

.32

.31

OQ

.26

.41

1.08

.......

Mar.

.......

.86

80

.72

.81

.86

so

1.28

1.44

1.51 

1.35

1.09

1 99

1.29

1.23 

.92

04

.92

.86 

.81

.76

QA

Apr.

.......

1.15

1.20

1 97

1.27

1.56

1.41

1.29

1.20 

1.22

1.08

1.10

1.12

1.10

1.34 

1.27 

1.14

1.22

1.31

1.25

May.

.......

1.45

1.29

.89

.75

.71

""."68"

.60 

""."58"

.49

June.

.......

0 40

.39

.58

""."56"

.60

.79

.71

.82

.74

July.

.......

1.34

1.12

1 05

.99

89

.84

.82

1.09 "Vse"

.41

.71

.52 

.57

1.02

1.15

Aug.

0.52

1.14

79

.69 

.68

.70

.67

.69 ""."91"

.79-

90

""58" 

.55

.55

.50

.47 

.84

Sept.

.......

1 48

1.34

1.34 

1.18

1.03

93

1.08

.96

.82 

.76

.82

.80

.79

.78

.80 

.76 

.79

.64

.55

.54

.52

.48

1.32

Oct.

1.12 

1.04

.84

.70

.68

""."64"

.69

.70

.97

.81

.82

1.01

1.09

.......

1.58*

1.15 

1.05

1.11

Nov.

1.38

1.36

.99 

96

1.31

1.44

1.26

1.04 

1.35

1.30

1.35

1.12 

1.04 

1.12

.80

.94 

.90

1.21

Dec.

......

1 39

1.38

1 19

1.06

1.08

1 9Q

1.09

.99

QO

.88

.84

.85 

.93

.98

Q7

.82

.95

1.02

1.26 

" "i "36

1.11

1.09
244 WATEB EESOTJECES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 13 at 2,700-foot level, near Silo, Hawaii,

for 1911.

Day.

1.. ..........

2............ 

3............ 

4... .........

5............

6............ 

7............ 

8............ 

9.. ..........

10............

Oct.

57.5

45.0 

38.0 

32.0

27.0

15.4 

13.8 

12.4 

11.2

10.0

Nov.

1.02

.95 

.88 

2.30

5.50

7.10 

9.00 

11.20 

13.80

11.50

Dec.

5.50

2.90 

2.54 

2.90

3.26

2.30 

1.80 

2.10 

2.42

2.30

Day.

11............

12............

13............ 

14............

15............

16............ 

17............ 

18............

19............

20............

Oct.

8.75

8.50 

8.25 

8.00

7.75

7.50 

7.50 

5.50 

4.90

4.30

Nov.

12.40

13.00 

14.20 

15.00

16.20

10.60 

11.50 

13.00 

15.00

17.00

Dec.

2.54

2.42 

10.60 

85.00

122.00

85.00 

108. 00 

102.00 

109.00

71.00

Day.

21............

22............

23............ 

24............

25............

26............ 

27............ 

28............ 

29............

30............

31............

Oct.

3.70

3.26 

2.90 

2.54

2.30

2.10 

1.70 

1.30 

1.02

.74

1.02

Nov.

19.50

22.00 

24.50 

27.00

28.00

16.60 

12.40 

11.80 

10.30

9.50

Dec.

33.20

27.50 

19.50 

10.60

49.00

32.00

24.50 

22.50 

36.80

32.00

32.00

Daily discharge, in second-feet, at station No. 13 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12. ..............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25. ..............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.50

2.50

2.80

2.50

2.40

2.50

2.90

3.30

2.90

2.50

2.30

2.10

1.80

1.50

1.00

.70

.60

.CO

.50

.30

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Feb.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.05

.05

.05

.05

.05

.10

9.50

15.00

22.00

29.00

35.00

15.00

5.00

3.00

5.00

7.00

-------

Mar.

4.00

6.00

5.50

4.70

3.50

3.00

2.50

3.00

3.70

4.70

5.30

16.20

24.00

27.50

19.50

9.80

13.80

20.00

18.00

16.60

14.20

5.90

6.30

5.00

5.90

4.70

3.70

3.00

2.50

3.50

25.00

Apr.

16.00

13.00

11.50

13.00

15.80

15.80

24.00

35.00

32.00

30.00

22.50

16.60

17.00

13.00

13.80

9.50

15.00

10.00

10.60

10.00

19.00

15.80

11.20

10.00

13.80

17.50

15.00

13.80

10.00

15.00

May.

20.00

25.00

20.00

24.50

OA AA

16.60

10.00

7.00

6.00

6.00

5.50

5.50

5.30

6.00

7.00

8.00

2.90

2.60

2.40

2.30

2.20

2.10

2.10

4.00

1.30

1.30

1.20

1.50

2.00

1.00

.50

June.

0.40

on

.20

.10

.10

.10

.10

.20

.40

60

.80

1.00

1.20

90

.60

1.20

1.80

1 60

1.50

1.40

1.30

1 80

2.40

2.90

3.40

2.40

3.90

2.80

2.00

2.00

July.

3.00

10.00

19.00

10.60

8.80

7 ^Ift

6.30

5.30

3.90

20.00

9.80

4.70

2.00

4.00

4.00

2.00

.50

.10

on

.50

2.40

2.00

.70

1.10

8.00

11.50

10.00

5.00

Aug.

0.70

1 00

15.00

11.20

3

Af\

2 no

2.20

2.10

2.30

2.00

1.70

i t^n

2.20

4 00

5.70

3.40

4.00

5.50

7.00

1.00

1.00

1.20

1.00

1.00

60

.40

4.30

5.00

4 00

3.00

2.00

Sept.

7.00

19 fift

20.00

30.00

9fi Oft

19.00

19.00

12.40

8.20

7.00

6.10

9.50

6.70

3.90

3.00

S on

3.00

3.50

3.40

3.30

3.50

3 on

3.40

1.70

1.40

1.00

.90

.70

.50

18.00

Oct.

10.60

8.50

6

Af\

4.30

2 30

2 in

1 90

1.70

1 t\(\

2 20

2 on

6 90

3.70

S on

4 00

o no

10.00

7 80

10.00

11.00

15.00

20.00

31.00

U cn

8.80

35.00

30.00

30 00

20.00

10.30

Nov.

21.00

15.00

30.00

25.00

9ft Oft

7.30

6.70

35.00

35.00

24.00

15.40

8.50

5.00

19.50

30.00

17.00

30.00

19.50

10.60

S

en

10.60

7.00

3

Kf\

6.30

5.50

12.00

13.40

Dee.

20.00 ftK. no

18.00

21.00

10.60

Q ftft

9.50

16.20

9 80

7.30

i on

5.10

4 30

4 50

6.10

7.10

4.90

3.90

15.00

8.00

20.00

15.40

20.00

20.00

10.30

9 7ft

5.00

NOTE. Daily discharge determined from rating curve fairly well defined, except for flood stages. Discharge for days for which gage heights are missing estimated "from diagram prepared from record of daily 

rainfall at the camp near station No. 50.
ISLAND OP HAWAII. 245

Monthly discharge at station No. 13 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

In secondfeet.

3.86

12.80

33.70

1.25

5.05

9

QQ

16.20

7.48

Run-off 

(total in 

acre-feet).

237. 00

755.00

2,070.00

76.90

290.00

577.00

964.00

Month.

1912 Continued.

July..........................

Mean 

djseharge 

in secondfeet.

1.31

6.36

3.27

Q AQ

10.50

16.10

12.50

8.11

Run-off 

(total in 

acre-feet).

78.00

391. 00

201.00

J.7R OH

646.00

958. 00

769. 00

5, 890. 00

Discharge measurements at station No. 14 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 13........... ............

Sept. 27................ .......

Gage 

height.

Feet. 

0.74

.74

Discharge.

Sec.-ft.

Date.

Nov.27.. .....................

Gage 

height.

Feet. 

0.85

.70

Discharge.

Sec.-ft. 

0.06

.04

NOTE. Bed sand, gravel, and small cobbles; fairly smooth. Shifting. One channel at all stages. 

This stream is tributary to Wailuku River.

Daily gage height, in feet, at station No. 14 at 2,700-foot level, near Hilo, Hawaii, for

1912.

[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and KuznetsofE, observers.]

Day.

1... ............

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11............... 

12...............

13...............

14...............

15...............

16...............

17...............

IS...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26............... 

27............... 

28...............

29...............

30...............

31...............

Jan.

0.78

.75

.74

.76

.78

.81

.79

.78

.72 

.71

.70

.70

.60

(a)

(a)

(a)

(a)

(a)

(a)

"(a)" 

(a) 

(a)

(a)

Feb.

(a)

(a)

(a)

(a)

(a)

(a) 

(a)

(a)

(a)

(a) 

(a)

(a)

(a)

(a)

0.81

.......

Mar.

1.01

Q7

.94

""95"

.98

.99

1.00 

1.00

1 10

1.21

1.04 

.81

1.04

1.29

1.18

i ns

1.06

1.02

1.00 

.99 

.99 

.96

1.04

Apr.

0 94

1.00

1.02

1.07

1.42

1.40 

1.35

1.24

1.31 

1.30

1.31

1 39

1 40

1.44

1.42

1.36

1.41

1.41 

1.38 

1.30

May.

1.41

1.39

.......

1.22

1.00

99

90

.88

"".'so'

.78

June.

(a)

"(«)""

0.70

.66

0.80

.78

.99

.88 

1.00 

.92

July.

1.39

1.2S

1.14

1.09

1.05

1.00

.92

1 30

1.00

1.00

.90

1.05

.95 

.89

.74 

.74

Aug.

0.72

1.39

.79

""."84"

80

.95

1.00 

......

.74

.77 

.76

.78

79

.75

.80

.75

.75 

.85

Sept.

1.05

1.00 

1.24

1.04

.91

.80 

1.00

.88

.85

.82 

.85

.81

79

.76

.80

.82

.80

.79

.75 

.74 

.74 

1.08

Oct.

0.95

.89

.74

.74

.74

.74

.65

.64 

.75

64

.65

.76

.80

.94

.85 

.75

.88

Nov.

0.99

.91

""."96"

.90

.96

""."95"

.90

.88

.95

.95

1 00

.94

09

.95

.90

.84

.85

.85

Dec.

1.02

.72

.62

.58 

.59

.72

.63

.62

.60

.58

.55

.56

.62 

.66

.54

.48

.58

.60

.74

""."TO

.64 

.64

a Channel dry.
246 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 14 at %, 700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1.. .........

3...........

4.. .........

5...........

6...........

7........... 

8...........

9

10...........

Oct.

0.60

.40

.30

.25 

.19

.18 

.17

.16

.15

Nov.

0.05

.05

.05

.10 

.11

.12 

.13

.14

.12

Dec.

0.10

.05

.05

.10 

.05

.05 

.05

.05

Day.

11...........

12...........

13...........

14...........

15...........

16...........

17........... 

18...........

19

20...........

Oct.

0.15 

.14

.13

.12

.12 

.12

.11 

.10

Nov.

0.12

.12

.12

.12

.12 

.10

.12 

.14

.15

.16

Dec.

0.10 

.05

.18

.22

.86 

.19

.60 

.50

.62

.34

Day.

21...........

22...........

23...........

24 ...........

25........... 

26...........

27...........

28...........

29...........

30...........

31...........

Oct.

0.10

.05

.05

.05 

.05

.05 

.05

.05

.05

.05

Nov.

0.18 

19

.22

.25

.28 

.19

..16 

.16

.13

.11

Dec.

0.29

.22

.19

.10

.25 

.19

.15 

.15

.34

.30

.25

Daily discharge, in second-feet, at station No. 14 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14. ..............

15...............

16...............

17...............

18...............

19. ..............

20............... 

21...............

22...............

23...............

24. ..............

25...............

26. ..............

27...............

28...............

29...............

30...............

31...............

Jan.

0.10

.10

.10

.05

.05

.10

.10

.10

.10

.10

.05

.05

.05

.05

.05

(a\

M

(a)

(a) 

fal

(a.)

(a)

(a}

(a)

(a)

(a)

(a)

(a)

ft (a)

Feb.

(a)

(a)

(a)

(a)

(a)

(a)

(«)

(a)

ft [ a)

a)

°)

a)

(a)

(a)

n(a)

(a)

0.10 

.50

.90

1 HA

90

Rft

.70

nn

.50

.40

Mar.

0.30

30

.20

20

.15

.15

9fl

.20

.20

CA

.50

.10

.80

.70

.70 

45

.30

2

Z

.20

.20

.20

.20

.20

.20

.25 .80-

Apr.

.20

.15

.20

9fl

I nn

1 00

Qft

QC

.90

.80

.70

60

.70

.70

.70

.70

on

.90 

1 00

.95

.80

90

on

QA

.85

.70

60

.70

May.

0-80

.70

.80

.90

1.00

.90

.80

.80

.70

.70

60

fin

.55

.40

.30

.20

.20

-.20

.20 

.20

.20

.15

.15

.10

.10

.10

.10

.10

.10

June.

0.05

.05

.10

.10

.15

.15

July.

0.10

.20

.90

.65

.40

.30

.30

.25

.20

.15

.80

.80

.70

.50

.20

.20

.20

.20

9()

.25

.20

.15

.15

.05

.05

.05

Aug.

0-05

.10

.90

.10

.10

.10

.10

.15

.20

.10

.05

.05

.10

.10

.10

.10

.10

.10

.10 

.05

.05

.05

.10

.05

.05

.10

.10

.10

.10

.10

Sept.

0.30

.40

.50

.60

.25

.20

60

.25

.15

.10

.10

.20

.15

.10

.10

.10

.10

.10

.10

.10 

.10

.10

.10

.10

.05

.05

.05

.30

.40

Oct.

0.15

.15

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.10

.30

.10

.10

.20 

.20

.40

60

.15

.10

.05

1.00

1.00

.80

.60

.15

Nov.

0.20

.15

.30

.20

.15

.15

.15

.15

.20

.80

.70

.15

.15

.15

.15

.15

.15

.15

.15

.20 

.15

.15

.15

.15

.15

.10

.10

.10

.10

.10

Dec.

0.30

.40

.20

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.30 

.20

.40

.80

.40

.05

.10

.05

.05

.05

.05

.05

o Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 14 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October. .....................

1912.

Mav .......................

Mean 

discharge 

in secondfeet.

0.15

1 3

.22

.04

0-1

.70

.42

Run-off 

(total in 

acre-feet).

9.28

8.04

2.46

12.70

19.10

41.70

25.80

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.07

.29

.12

20

.22

19

.14

.24

Run-off 

(total in 

acre-feet).

4.17

17.80

7.38

11 90

13.50

11.30

8.61

176.00
ISLAND OF HAW AH. 247

Discharge measurements at station No. 15 at 2,700-foot level, near Hilo, Hawaii, in 1912.

Date.

Aug. 15 

Sept. 27

Nov. 27

Hydrographer.

E. O. Christiansen 

.....do.............

.....do.............

Gage 

height.

Feet. 

1.20

1.18

Discharge.

Sec.-ft. 

1.19

QQ

1.66

Date.

Nov. 27 

Dec. 27

Hydrographer.

E. O. Christianseh . 

.....do.............

Gage 

height.

Feet. 

 1. 18 

1.36

Discharge.

Sec.-ft. 

1.56 

6.84

NOTE. Bed of stream of gravel, cobbles, and some bowlders. Is somewhat rough. Probably permanent. One channel at all stages. 

This stream is tributary to wailutu River.

Daily gage height, in feet, at station No. 15 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1... ............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14............... 

15. ..............

16...............

17...............

18...............

19

20...............

21...............

22...............

23. ..............

25...............

26...............

27...............

28...............

29...............

30. ..............

31...............

Jan.

1.18

1.12

1.18

1.20

1.25

1.20

1.10

1.02

.98

.92 

.92 

.92

01

.91

.90 

on

.89

.88

.90

.90

.85

.82

Feb.

(a) w

(a)

a

(a)

(a)

(a)

0.79 .78" 

.75

.71

(a)

(a)

.71

1.32

Mar.

1.15

1.13

1.10

1.03

1.11

1.12

1.15

1.33

1.47

1.63 

1.84

1 91

1.38

1.39

1.27 

1.14

1.18

1.16

1.14

1.11

1.10 

1 08

1.02

Apr.

1.12

1.19

1.20

1.20

1.48

1.42

1.32

1.29 

1.37

1.22

1.26

1.24

1.21

1.40 

1.38

1.26

1 39

1.41

1.38

1.29

May.

1.58

1.50

..:....

1.05

1.01

.90

.88

.83

.73

June.

0-64

.60

.90

~".~86'

.90

.88

.99

.90

1 00

.90

July.

1.34

1.24

1.20

1.18

1.12

1.09

1.16

1.19

"i.~09~

.89

.81

.79

.45

.28 

.15

Aug.

0.99

1.34

1.18

1.14

1.12

1.15

1.04

1.06

1.09 "i.'ig"

1.09

1.18

"i'02'

1.00

1 00

.99

.95

1.15

Sept.

1.52

1.39

1.51

1.30

1.24

1.08

1.26

1.13

1.04 

1.02 

1 06

1.05

1.04

1.02

1.02 

1.12

1.04

1 00

1.00

.99 

.96

1.42

Oct.

1.29

1.20

1.08

1.04

1.02

1.00

1.02

1.04

1.27

1.07

1.10

1.18

1 34.

1 11

1.30

1.20

1.21

Nov.

1.40

1.34

1.20

1.20

1.43

1.41

1.25

1.19 

1 4n

1.44

1.40

1.29 

1.28

1.32

1.20

1.18

1.16

1.22

Dec.

1.38

1.42

1.29

1.25

1.32

1 oc

1.22

1.20

1.15

1.11

1.14

1.22

1.28

1 tt

1.12

1.20

1.22

I

qo

1.38

1.30 

1.24

o Channel dry.

Daily discharge, in second-feet, at station No. 15 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1.. ......... 

2............

3............

4...........T 

5............

6............ 

7............

8............

9............

10............

Oct.

29.00 

25.00

21.00

17.00 

12.90

7.00 

6.10

5.20 

4.30

4.05

Nov.

0.40 

.38

.37

.64 

1.80

2.55 

3.30

4.05 

5.20

3.80

Dec.

0.92

.55

.55 

.64

.55 

.46

.46 

.55

.40

Day.

11............

12............

13............

14............ 

15............

16............

18............ 

19............

20............

Oct.

3.05 

t ft*;

2.80

2.55 

2.30

2.05

1.58 

1.36

1.14

Nov.

4.05 

4.30

5.20

6.10 

7.00

3.80 

4.05

4.75 

5.60

6.55

Dec.

0.58 

.43

4.30

17.00 

42.50

7.00 

39.20

45.80 

52.40

15.40

Day.

21............

22............

23............

24............ 

25............

26..... ...L...

27..... ...L...

28............ 

29............

30............ 

31............

Oct.

0.92 

.70

.64

.58 

.55

.52 

.46

.43 

.40

.38 

.40

Nov.

7.45 

8.35

9.62

11.30 

12.90

5.20

3.80 

2.05

1.25

Dec.

5.20

3

r\K

1 80

1.25 

29.00

18.00

4.75 

19 00

17.00 

12.90
248 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 15 at 2,700-foot level, near Eilo, Hawaii,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11......".........

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.00 

2.00 

2.30 

1.60 

.90

1.60 

1.80 

3.05 

2.30 

1.80

.70 

.45 

.35 

.25 

.25

.25 

.25 

.25 

.25

.25

.25 

.25 

.25 

.25 

.25

.25

.25 

.25 

.15 

.10

.10

Feb.

( 

i

( 

^ 

(

5

30 

50 

60 

45 

35

30 

20 

10 

8

a 

i 

i 

z

*)

1

I 

1 

1») 

'}=0

10 

10 

10

10 i) J) *)

20

00 

00 

00 

00 

00

00 

00 

00 

00

Mar.

7.00 

5.00 

1.25 

1.05 

.70

.70 

.65 

.70 

.80 

.90

1.25 

5.65 

14.55 

32.00 

52.40

2.05 

7.90 

7.90 

7.90 

7.95

3.50 

1.15 

1.60 

1.50 

1.35

1.15

.80 

.70 

.65 

.95 

18.00

Apr.

6.00 

2.00 

.90 

1.70 

2.05

1.80 

30.00 

28.00 

25.00 

15.30

10.45 

5.20 

4.60 

4.05 

7.45

2.30

2.80 

3.30 

2.80 

2.05

8.80 

7.90 

3.30 

4.20 

5.20

9.60 

7.90 

4.05 

3.50 

4.00

May.

12.00 

15.00 

20.00 

25.00 

40.00

17.00 

10.00 

6.00 

4.00 

2.00

1.00 

1.00 

1.00 

.50 

.50

.50 

.55 

.50 

.45 

.40

.30 

.30 

.25 

.20 

.20

.20 

.15 

.10 

.10 

.10 

.10

June.

0.10 

.10 

.10 

.10 

.10

.10 

.10 

.10 

.10 

.10

.20 

.20 

.25 

.20 

.20

.20 

.25 

.20 

.20 

.20

.20 

.30 

.30 

.30 

.35

.25

.40 

.25 

.20 

.20

July.

1.00 

1.50 

6.10 

2.80 

1.80

1.60 

1.20 

.90 

.67 

1.35

1.50 

1.60 

1.70 

1.20 

.67

.50 

.50 

.40 

.30 

.30

.25 

.20 

.10 

.45 

.30

.10 

.10 

.10 

.10 

.20 

.20

Aug.

0.35 

.40 

12.00 

6.10 

1.60

1.40 

1.15 

.90 

1.25 

.50

.60 

.60 

.70 

1.20 

1.70

.70 

1.20 

1.60 

1.20 

.80

.60 

.45 

.40 

.40 

.35

.30 

1.25 

1.00 

.80 

.60 

.90

Sept.

16.00 

20.00 

30.00 

40.00 

19.00

5.65 

18.00 

4.30 

2.80 

1.70

.65 

3.30 

.90 

.50 

.45

.60 

.60 

.55 

.50 

.45

.45 

.90 

.50 

.45 

.40

.40 

.40 

.35 

.30 

10.45

Oct.

4.05 

1.80 

1.20 

.65 

.50

.45 

.40 

.40 

.40 

.45

.50 

3.50 

.60 

.70 

.70

.50 

10.00 

1.60 

6.10 

6.00

6.00 

30.00 

50.00 

12.10 

4.30

1.80 

60.00 

50.00 

40.00 

20.00 

2.05

Nov.

8.80 

12.00 

20.00 

14.00 

6.10

3.00

1.80 

1.80 

11.20 

30.00

20.00 

9.60 

3.05 

1.70 

1.50

8.80 

18.00 

12.10 

10.40 

8.80

4.05 

3.80 

5.20 

3.50 

1.80

1.60 

1.35 

9.00 

6.00 

2.30

Dec.

14.00 

20.00 

7.90 

10.45 

4.05

3.05 

3.30 

5.20 

3.80 

2.30

1.80 

1.25

.80 

1.15 

2.30

3.80 

1.05 

.90 

1.80 

8.00

2.30 

20.00 

40.00 

25.00 

5.20

6.40 

7.90 

4.30 

2.80 

2.00 

2.00

o Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

^ainfall at the camp near station No. 50.

Monthly discharge at station No. 15 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

Mean 

discharge 

in secondfeet.

5.14

4.65

11.30

.80

10.10

7.21

5.14

Run-off 

(total in 

acre-feet).

318. 00

278.00

699.00

49.20

581.00

429.00

316. 00

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.20

.96

1.39

6.02

10.20

8.04

6.93

5.23

Run-off 

(total in 

acre-feet).

11.90

59.00

85.50

627.00

478.00

426.00

3,800.00
ISLAND OF HAWAII. 249

Discharge measurements at station No. 16 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 15......................

Sept. 26... ....................

height.

Feet. 

0.46

.35

Discharge.

Sec.-/*. 

0.10

.01

Date.

Nov. 27......................

Dec. 27......................

Gage 

height.

Feet. 

0.35

.66

Discharge.

Sec.-ft. 

0.05

.14

NOTE. Bed of stream of sand, gravel, and silt. Shifting. One channel at all stages. 

This stream is tributary to Wailuku Kiver.

Daily gage height, in feet, at station No. 16 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

tBomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1........... ...

2...............

3............... 

4............... 

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24...............

25...............

26............... 

27...............

28...............

29...............

30...............

31...............

Jan.

0.46 

.44 

.42

.45

.45

.48

.45

11

.42

.41

.40

.34 

(°)

(a)

(°)

(a) 

(°)

(a)

ft(°)

"(«)"

(a)

(a)

(a)

Feb.

"fit"

(a) (a)

(a)

(a)

(a)

0.41

.32

.30

.30 

(°)

(a)

.40

.77

.......

Mar.

0.50 

.46 

40

40

.51

.50

.51

.56

.71

.76

.64

.55 

.83

.86

.68 

.47

.52

.52

.51 

.46

.42

.41

.54

Apr.

0.53 

.54

KQ

.59

.72

.71

AQ

.64

.69 

.62

.61

.63

.62

.72

79

.66

.68

.70 

.65

.64

May.

"6.~85"

.69

60

""45"

.41

.......

.40

40

""."ss"

.30

June.

"6.26"

.is

.37

.31 

""."46"

.39

.49

.45 

,50

.47

July.

0.60 

.56 

.55

.54

.52

.51

.52

.61

.54

.54

.53

CO

.42 

.40

.35

Aug.

0.31

""."69" 

.40

40

.39

.44

.42

.38

.39

.44 

.40

.41

""."45"

.45

45

.44 

11

Sept.

"6." 49"

.44

.50

.50

.50

.48

.52

.48

.46

.42

.48

.39

.34

.34

.35

qe

.29

.25

.24 

.24

.24

.24

.50

Oct.

0.42

.39

""."28" 

.26

.25

.25

.26

.28

.42

.25

.30

.40

.42

.......

.45

.40

.38

.40

Nov.

0.48

""."46"

,34

.39

.56

.48

.40

.38

.50

.55

.50

.46 

.42

.41

.38

.37 

.35

.42

Dec.

0.42 

.56 

.48

.45

.42

.52

.45

.42

.40

.40

.40

.41

.44

.45

.38

.40

.43

.42

.51

""."66

.60

.45

o Channel dry.

Daily discharge, in second-feet, at station No. 16 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1............

2............

3...........

4............

5............

6............

7............

8............

9............

10............

Oct.

0.70

.62

.50

.38

.30

.27

.26

.24

.22

.21

Nov.

0.01

.01

.01

.05

.15

.16

.18

.20

.21

.27

Dec.

0.05

.04

.02

.04

.05

.02

.02

.04

.05

.05

Day.

11............

12............

13............

14............

15............

16............

17............

18............

19............

20............

Oct.

0.18

.18

.16

.16

.15

.15

.15

.15

.14

.13

Nov.

0.26

.24

.22

.21

.20

.16

.18

.20

.21

.22

Dec.

0.05

.05

.27

.50

1.18

.16

1.10

.90

1.18

.62

Day.

21............

22............

23............

24............

25............

26...'.........

27............

28............

29............

30............

31............

Oct.

0.12

.11

.10

.10

.10

.05

.05

.05

.05

.01

.01

Nov.

0.24

.26

.27

.30

.38

.18

.13

.14

.10

.05

Dec.

0.22

.18

.16

.15

.78

.62

.30

.28

.70

.50

.30
250 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. -16 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

3...............

4...............

5...............

6...............

8............... 9........:......

10...............

11...............

12...............

13...............

14...............

15...............

16...............

V.... ...........

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27. ..............

28...............

29...............

30...............

31...............

Jan.

0.05

.05

.05

.05

.05

Feb.

0.60

Mar.

0.05

.05

.05

.05

.05

.05

05

.05

.05

.05

.05

.10

.35

.55

.20

.10

80

.80

.90

.95

.25

.05

.05

.05

.05

.05

.05

.05

.05

.10

Apr.

0.20

.10

.10

.10

.15

.15

.70

.60

.50

.40

.35

30

.30

.20

30

.20

.20

.15

.20

.20

.40

.40

.25

.25

.25

.30

20

.20

.20

.30

May.

O Qrt

30

^K

June.

05

.05

.05

July.

0.15

.10

.10

.10

05

.05

.05

.15

.10

.10

.05

Aug.

0.30

.05

.05

.05

Sept.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Oct. Nov.

0.05

.10

.05

.05

.10

.05

.05

Dec.

0.10

.05

.05

.05

.05

.05

.05

.25

.15

.05

NOTE. Daily discharge determined from poorly defined rating curve. Discharg_e for days for which 

gage heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 16 at 2,700-foot level, near Hilo, Hawaii,, for 1911-12.

Month.

1911.

1912.

Mean 

discharge 

in secondfeet.

0 19

.18

34

.02

.30

.21

97

.10

Run-off 

(total in 

acre-feet).

11.90

10.70

21.00

1.23

17.30

12 90

16.10

6.15

Month.

1912 Continued.

July..........................

Mean 

discharge 

insecond- 

. feet.

0.04

.10

.05

.40

.10

.08

i<»

Runoff 

(total in 

acre-feet).

2.38

6.15

6.15

2 98

24.60

5.95

4.92

107.00
ISLAND OF HAWAII. 251

Discharge measurements at station No. 17 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Chrlstiansen, hydrographer.]

Date.

Aug. 15.......................

Sept. 26. .....................

Gage 

height.

Feet. 

0.68

.64

Discharge.

Sec.-ft. 

0.04

Date.

Nov. 27.... ....... ..... .......

Dec. 27. ......................

Gage 

height.

Feet. 

.0.69

.72

Discharge.

Sec.-ft. 

0.06

.15

NOTE. Bed of stream of sand, gravel, and silt. Shifting. One channel at all stages. This stream is 

tributary to Wailuku River.

Daily gage height, in feet, at station No. 17 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8..............

9...............

10...............

11...............

12

13...............

14..............

15...............

16............... 

17...............

18...............

19...............

20...............

21...............

22.......... ...

23...............

24............... 

25...............

26...............

27...............

28..............

29...............

30...............

31.. ............

Jan.

6.68

.65

.64

.65

.65

.68

.65

.64

.64

.65

.65

.65

.65 

".65

.64

.62

.61

.61

.61

.60

.62

.61 

.60

.60

Feb.

(a)

fa\

(a)

(a)

(a)

(a)

(a)

0.66 . 60

.59

.58 

(a)

(a)

.63

.84

Mar.

6.65

.65

.65

.62

.68

.70

.70

.72

.77

.88

.77

.71 

.94

.91

.87

.69

.82

...... 

.65

.64

.64 

.62

.67

Apr.

0.70

.74

.74

.72

.74

.72

.71

.71

.81

.77

.70

.71

.71

.76

.76

.70

""."75"

.78

.74

.72

May.

0.92

.82

.70

""."65"

.61

.58

""."53"

.50

40

June.

O

q-i

.29

.56

.50

""."es"

.60

""."75" 

.71

.71

.70

July.

0.70

.70

69

.66

.64

.61

.65

.71

.63

.64

.61

.65 

.65

.65

.64 

.61

Aug.

..0.62

79

.68

.70

.68

.66

.69

.66

.67

.68 

.57

.68

.62

.61

.62 

.61

.61

.66

Sept.

0.70

.70

.78

.68

.64

.68

.60

.60

.59 

.60

.ei

.65

.64

.62

.65

.64

.64 

.64

.64

.63 

.62

.72

Oct.

0.70

.69

.65

.65

.64

.64

.65

.64

.72

.65

.66

.68

68

.74

.74

.75

.64

Nov.

0.71

.75

.68

.68

.72

.78

.75

.71

.78

.78

.75

.72

.72

.74

....... 

.74

.70

.75

Dec.

6.75

.72

.70

.68

.68

.74

.70

.68

.66

.66

.65

.66

.68

.68 

.65

.65

?70

.70

"""."72

.71

.70 

.65

a Channel dry.

Daily discharge, in second-feet, at station No. 17 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...... ...... 

2............

3... ......... 

4... ......... 

5............

6............

7............ 

8............

9............ 

10...........

Oct.

0.82 

.74

.66 

.58 

.50

.50

.43 

.36 

.34 

.29

Nov.

0.10 

.10

.10 

.12 

.22

.29

.36 

.43 

.50 

.46

Dec.

0.12 

.10

.10 

.10 

.10

.05

.05 

.05 

.12 

.10

Day.

11............

12............

13............ 

14............ 

15............

16............

17............ 

18............

19............ 

20............

Oct.

0.22 

.22

.22 

.18 

.18

.15

.15 

.18 

'.15 

.15

Nov.

0.46 

.46

.46 

.46 

.46

.32

.32 

.36 

.36 

.40

Dec.

0.14

.32 

.58 

1.70

.32

1.35 

1.30 

1.46 

.74

Day.

21............

99

23............ 

24............ 

25............

26............

27............ 

28............ 

29............ 

30............ 

31............

Oct.

0.14 

.12

.10 

.10 

.10

.10

.10 

.10 

.10 

.10 

.10

Nov.

0.40

43

.43

.46 

.50

.32

.18 

.22 

.15 

.14

Dec.

0.32

.22

.18 

.15 

1.00

 70

.50 

.43

.58 

.54 

.50
252

Daily dii

WATER RESOURCES OF HAWAII, 1912.

 e, in second-feet, at station No. 17 at 2,700-foot level, near Hilo, Hawaii, 

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27............... 

28...............

29...............

30...............

31...............

Jan.

0 15

Io1.1

.15

.15

.15

.15 .fs

.15

.15

.15

.15

.15

.15

.15

.15

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10 

.10

.10

.10

.10

Fet

fa

/*

(a

(a

(a

(n

(a,

a,

l«ft

(a

(*

0

(re

("'

f

1 f

1 ,

1 .

1 f

t

>.

'

5

0

0

0

0

V>

10

(0

.0

10

iO

10

iO 

V\

*)

Mar.

0.20

.20

.15

.15

.15

.15

.15

.15

.15

.15

.15

.25

.40

.80

.40

.20

.10

.40

.60

.95

.80

.15

.60

.40

.20

.15

.15 

.15

.15

.15

3.00

Apr.

1.00

.50

.15

.30

on

.25

1.30

1.10

.90

v\

.25

.20

.20

.20

.55

.40

on

.15

.20

.20

.35

.35

.15

.20

.30

.40

.30 

.25

.20

in

May.

i.66

.60

.15

.

.......

June.

6. is

30

.20

.20 

.15

July.

0.15

.15

.15

.15

.15

.20

.15

.15

.15

Aug.

6.45

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

Sept.

0.15

.15

.40

.15

.15

.15

.15

.15

.......

.25

Oct.

0.15

.15

.25

.15

.15

.30

30

.30

Nov.

0.20

.30

.60

.40

.30

.20

.15

.15

.25

on

.80

.40

.30

.20

.30

.40

.40

.40

.40

.30

.25

.25

.30

.30

.30

.30

.15

.20

.20

.30

Dec.

0.40

1.00

.30

.25

.15

.15

.15

.30

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.20

.15

.30

.40

.30

.25

.30

.20 

.15

' .15

.10

.10

a Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which gage 

heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 

station No. 50.

 Monthly discharge at station No. 17 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October ......................

November. ...................

1912.

April.........................

Mean discharge in 

secondfeet.

0.26

.33

4C

.13

.27

00

.38

.30

Run-off 

(total in 

acre-feet).

16.30

19.80

97 Qfl

7.99

15.50

00 Af\

18.40

Month.

1912 Continued.

July..... .....................

November

Mean discharge in secondfeet.

0.20

.15

.15

.20

.60

.33

.22

.28

Run-off 

(total in 

acre-feet).

11.90

9.22

9.22

11 90

36.90

19.60

13.50

200.00
ISLAND OF HAWAII. 253

Discharge measurements at station No. 18 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date. '

Aug. 15............ ...........

Sept. 26. .....................

Gage 

height.

Feet. 

0.62

.45

Discharge.

Sec.-ft. 

0.02

.04

Date.

NoV. 27.... ...................

Dec. 27. ......................

Gage 

height.

Feet. 

0.53

.70

Discharge.

Sec.-ft. 

0.02

.13

NOTE. Bed of stream of sand, gravel, and small cobbles; shifting. One channel at all stages. This 

stream is tributary to Wailuku River.

Daily gage height, in feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2...............

4...........:...

6...............

7...............

8...............

9

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17.,.. ...........

18...............

19............... 

20...............

21...............

22............... 

23...............

24...............

25...............

26............... 

27...........1...

28...............

29...............

30...............

31...............

Jan.

0.58

.55

.54

.56

.58

.62

.61

.59

.55

.52

.51

.50

.50

.50

.50 

.50

.49 

.49 

.48

.48

""."56" 

.49

.48

.46

Feb.

0.42

.42

.41

.41

.40

.40

.38

.42

.41

.41

.41

.38

.36

.50 

.92

.......

Mar.

0.75

.75

.74

.75

.79

.80

.80

.81

.97

.96

.81

.75

.89

""."89"

.82 

.78 

.80

.77

.75 

.75 

.75

.74

.81

Apr.

0.76

.80

.81

.81

.86

.79

.75

.72

80

.78

.78

.79 

.81

.83 

.81

.78

.82

.85 

.82 

.80

May.

1.02

.86

.79

.73

.68

""."eo"

.55

""."si"

4Q

June.

0.40

.38

.68

.70

.......

.69

.81

.80 

.82 

.79

July.

0.84

.80

.78

.76

.75

.74

.74

.79

.78

.......

.75 

""."76"

7Q

.72 

.72 

.72

.72

Aug.

0.72

.81

.74

.76

.75

.75

.72

.72

.74

.63

.50

.56

"".50 

.49

.50

.50

.49 

.55

Sept.

0.54

.59

.61

.54

.52

.45

.50

.48

.49

.48

.49

.49

.50 

.49

.48 

.50 

.48

.46

.45 

.45 

.45

.45

.65

Oct.

0.62,

.60

.51

4Q

.48

.45

.46

dQ

.53

.50

.52

.53

.54

.:.....

60

.60 

.58

.55

Nov.

0.59

.60

.56

.55

.60

.60

/58

.61

.60

60

.56 

.56 

.60

.57

.54 

.51

60

Dec.

0.60

.68

.62

.60

.61

.66

.62

.61

.61

.61

.61

. .62

.64

.64

.60

.60

.62

.62

.65

""."TO

.65

.61

Daily discharge, in second-feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1... .........

2............

3............

4............

5............

6............

7............

8............

9............

10............

Oct.

0.17

.15

.13

.11

.10

.05

.05

.05

.05

.05

Nov.

0.01

.01

.01

.05

.05

.05

.05

.05

.05

.05

Dec.

0.05

.03

.01

.03

.05

.05

.02

.03

.05

.05

Day/

11............

12............

13............

14............

15............

16............

17............

18............

19............

20............

Oct.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Nov.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Dec.

0.05

.03

.05

.10

.44

.05

.42

.35

.44

.20

Day.

21............

22............

23............

24............

25............

26............

27............

28............

29............

30............

31............

Oct.

0.05

.05

.05

.05

.05

.03

.03

.02

.01

.01

.01

Nov.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Dec.

0.05

.05

.05

.05

.17

.10

.05

.05

.17

.16

.15
254 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 18 at 2,700-foot level, near Hilo, Hawaii,

for

Dayl...............

2...............

4...............

5...............

6...............

7............... 

8...............

g

10...............

11...............

12...............

13............... 

14...............

15...............

16...............

17............... 

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

"6" 05' 

.05

-------

.......

Feb.

0.45

Mar.

0.20

.20

.20

.20

.20

.20

.20 

.20

oc

.25

.25

.25

.55

cn

.25

.20

.40 

.40

4n

.40

.30

.25

OC

.25

.25 

.20

.20

.20

.20

.25

.50

Apr.

O

OA

.20

.20

.25

.25

.25

.20 

.30 

An

4n

.25

.20

.20 

.15

.25

.25

.25

.25

.25

.25

.30

.25

.15

.20

.30 

.30

30

.25

.20

.30

May.

6.65

4n

.25

.20

.15

.05

.......

June.

0.15

.10

.15

.15

.25 

.25

.30

.25

July.

0.20

.20

.30

.25

.25

.20

.20 

.20 

.20

.20

.20

.20

.25 

.25

.25

.25

.20 

.20

.20

.20

.20

.20

.15

.25

.20 

.15

.15

.15

.15

.15

.15

Aug.

0.15

.20 .20'

.25

.20

.20

.20 

.20 

.20

.15

.15

.15

.20 

.10

.10

.10

.10 

.10

.10

.10

.10

.10

.10

.10

.10 

.10

.10

.10

.10

.10

.10

Sept.

0.05

-------

.......

.10

Oct.

0.05

.05

.......

.......

.......

.05

.05

Nov.

0.05

""."16"

.05

.05

.05

""."65"

.05

.05

.......

.05

Dec.

0.05

.15

.05

.05

.05 

.10 

.05

.05

.05

.05

.05 

.05

.10

.10

.05 

.05

.05

.05

.10

.15

.10

.05

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which gage 

heights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp near 

station No. 50.

Monthly discharge at station No. 18 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

February. ....................

May..........................

Mean 

discharge 

in secondfeet.

0.06

.11

0.1

.10

no

oc

Run-off 

< total in 

acre-feet).

3 CO

2.74

7.05

.61

5.72

17.20

14 90

6.15

Month.

1912 Continued.

July..........................

December

Tli6 vsar J

Mean 

discharge 

in secondfeet.

0.10

.20

.14

.02

.40

.05

.05

.14

Run-off 

(total in 

acre-feet).

5.95

19 3fi

1 1Q

24.60

2 no

0 A7

103 00
ISLAND OF HAWAII. 255

Discharge measurements at station No. 25 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 15... ....................

Gage 

height.

Feet. 

0.30

.06

Discharge.

Sec.-ft. 

0.22

.04

Date.

Nov. 27... ....................

Dec. 27. ......................

Gage 

height.

Feet. 

0.38

.64

Discharge.

Sec.-ft. 

0.19

1.20

NOTE. Bed of stream of sand and gravel; slightly shifting. One channel at all stages. This stream is 

tributary to Wailuku River.

Daily gage height, in feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, BilikoT, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Date.

1...............

2...............

3...............

4...............

5...............

6...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22............... 

23...............

24...............

25............... 

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.35

.32

.32

.40

.41

.44

.42

.40

.35

.30

.28

.22

1 K

.10

(a\

(a)

a)

a)

(a) 

(a\

(a)

(a)

Feb.

(«)

(a}

(a)

(a}

(a}

(a)

(a)

0.21

.10

(«)

(a)

(a)

<"il

.49

.......

.......

.......

Mar.

0.30

.26

.21

.29

.34

.39

.39

.52

.65

.45

.39

.30

.62

.51

.41

.30 

.49

.40 

.31

.26 

.20

00

.36

Apr.

0.36

.42

.42

.41

.68

.61

.49

.39

.42

.36

.42

.47

.46

.62

.62. 

.53

.58 

.64

.63 

.61

May.

0.84

.79

.51

.20

.20

""."ig"

.11

.10

June.

+0.10

+ .15

.30

.21

.30

.25

.45 

.40

.48- 

.40

July.

0.54

.48

.42

.40

.35

.34

.28

.42

.32

.30

"".22

.35

.26

.22 

.21

.22

Aug.

0.01

.39

.22

.28

.20

.30

.30

.15

.20

.31

.20

.30

.10 

.10

.20

.21 

.18

.30

Sept.

0.62

.53

.56

.50

.43

.31

.38

.30

.30

.34

.22

.18

.12

.15

.19 

.12

.10

.06

.06 

.05

.04

.64

Oct.

0.54

.48

.42

.40

.35

.34

.28

.42

.32

.30

""."22"

.35

.26

.22 

.21

.22

Nov.

0.62

.63

.38

.39

.66

.68

.49

.36

.57

.68

.63

.54

.50 

.54

.50 

.42

.38

.49

Dec.

0.60

.69

KA

.45

AK

.55

.49

.37

.32

.28

.22

.24

.33

.36

.22

.28

.40

.52

.61 

.48

.40

a Channel dry.

Daily discharge, in second-feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii, 

for 1911.

Date.

1............

2............

3............

4............

5............

6............ 

7............

8............

9............

10............

Oct

2.20 

1.50 

1.00

.60 

.45

.30 

.39

.48

.57

.64

Nov.

CO (a)

<»)

0.30

.45 

.60 

.80

1 00

2.06

Dec.

(

(

0 0*}0 ')

x' 

l'

2

»)

Date.

11............

13............

14............

15............

16............

17............

18............

19

20............

Oct.

0.68 

.60 

.54

.48

.42

.39 

.36

(a) 

(a) 

(a)

Nov.

1.78 

1.57 

1.40

1.25

1.10

1.00 

1.10

1.20 

1.30 

1.40

Dec.

(a)

(«) 

1.10.

1.64

4.20

1.64 

3.96

3.64 

4.12 

2.36

Date.

21............

23............

24............

25............

26............ 

27............

28............

OQ

30............

31............

Oct.

(a" 

(o' 

(a

-

(a

(a 

(a 

(a 

(a 

(«

Nov.

1.50 

1.64 

1.78 

1.92 

2.06

1.20 

1.00 

1.05 

1.00 

.68

Dec.

1.57 

.68 

.54 

.45 

2.84

2.06 

1.25 

1.25 

2.06 

1.85 

1.50

<* Channel dry.
256 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 25 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.20

.20

.20

.20

.20

.30

.35

.40

.35

.30

.20

.15

.15

.10

.05

.05

.05

.05

(a)

(a)

(a)

(°)

w(°)

w

(») (°) (»)

(a)

(a)

(a}

Feb.

a

a

a

a

a

(a

(a

(o

la

(a

W W

0.10

.05

(a)

I*

(a)

(a)

.05

.55

2.00

3.00

3.50

2.50

1.50

1.00

.50

.30

.20

Mar.

0.15

.15

.15

.15

.10

.10

.15

.20

.20

.30

.30

.70

1.25

.45

.30

.15

1.10

1.50

1.00

.65

.35

.15

.55

.40

.30

.15

.15

.10 (0L

2 flfl

Apr.

1.00

.50

.25

.35

.35

.35

3.00

2.50

2.00

1.40

1.05

.55

.40

.30

.35

.25

.30

.35

.50

.50

1.10

1.10

.70

.80

.90

1.20

1.15

1.05

.50

.80

May.

1.00

1.50

2.00

2.50

3.00

2.10

1.00

.50

.40

.30

.40

.50

.65

.50

.40

.20

.10

.10

.10

.10

.10

.10

.10

.10

.05

.05

.05

.05

.05

.05

(»)

June.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.10

.15

.15

.10

.10

.10

.15

.15

.10

.10

.10

.20

.20

.30

.45

.30

.55

.30

.30

.30

July.

0.30

.40

.75

.55

.35

.30

.20

.20

.20

.15

2.00

1.00

.35

.50

.20

.10

.20

.20

.20

.20

.15

.10

.10

.20

.20

.15

.10

.10

.10

.10

.10

Aug.

0.10

.10

1.00

.30

.10

.10

.15

.10

.15

.15

.10

.05

.10

.10

.15

.10

-.10

.15

.20

.15

.10

.05

.05

.10

.10

.10

.15

.10

.10

.10

.10

Sept.

0.80

1.00

2.00

3.00

1.10

.70

.85

.60

.40

.20

.15

.25

.15

.15

.10

.20

.10

.10

.10

.05

.05

.10

.05

.05

.05

.05

.05

.05

.10

1.20

Oct.

0.90

.70

.75

.55

.35

.30

.20

.20

.20

.15

.20

.30

.35

.30

.20

.10

.50

.20

.30

.40

.15

.20

.10

.20

.10

.15

.10

.10

.10

.10

.10

Nov.

1.10

1.80

2.50

1.30

1.15

.30

.25

.30

1.30

3.00

2.50

1.40

.55

.25

.20

.90

1.20

1.40

1.20

1.15

.75

.60

.75

.70

.60

.35

.25

.70

.60

.55

Dec.

1.50

2.50

1.00

1.45

.75

.45

.45

.80

.55

.25

.20

.15

.10

.10

.20

.25

.10

.10

.15

.40

.30

1.00

3.00

1.50

.70

1.00

1.05

.55

.30

.20

.10

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well denned except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50. *

Monthly discharge at station No. 25 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

O V7

1.71

1.25

.53

43

.85

.58

Run-off 

(total in 

acre-feet).

23.10

63.90

77.10

6.76

30.50

26.40

50.60

35.70

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.16

.31

.15

.46

.28

.99

.68

.46

Run-off 

(total in 

acre-feet).

9.52

19.10

9.22 97 in

17.20

58.90

41.80

333.00

Discharge measurements at station No. 26 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.J

Date.

Aug. 15.......................

Sept. 26......................

Gage 

height.

Feet. 

0.62

.61

Discharge.

Sec.-ft. 

0.02

Date.

Dec. 27.......................

Gage 

height.

Feet. 

0.70

.90

Discharge.

Sec.-ft. 

0.05

.31

NOTE. Bed of stream of silt, sand, andrgravel; shifting. One channel at all stages.
ISLAND OF HAWAII. 257

Daily gage height, in feet, at station No. 26 at 2,7 00-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

2...............

3...............

4............... 

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25............... 

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.75

.72 

.71

.74

.75

.78

.75

.72

.70

.68

(«)

ra

(a)

(a)

(a)

(0)

a

a

a

a

(a)

(a)

(a)

(a)

Fe

C

(a

(a

(a

(a

\"

(a

(a

(a

fa

(a

(a

0..<

....

b.

)

)

)

)

)

)

)

W

W

...

Mar.

0.67

.65 

.63

.65

.66

.66

.70

.71

.79

.81

.71

.61

.83

.88

.82

.71

fiQ

.71

R4

.64

Rd

.62

.71

Apr.

0.69

.74 

.70

.72

.78

.75

.70

.68

.71

fiQ

.71

.74

79

79

.74

.74

.81 

89

.80

.78

May.

0.90 

.94

.89

.70

.68

.60

.58

.51

.48

June.

" "o.'ss"

(a)

.61

.59

.62

.60

.70 

.68

.71

.68

July.

0.79

.71 

.70

.70

-.68

.67

.69

.75

.69

.68

.65

T>

.68

.64

(a)

.65

Aug.

0.62

.79 

.62

.63

.60

.62

.62

.63

.61

.64

.60

.66

.61

.61

.62

.60 

.60

.65

Sept.

"6." 75"

.71

.72

.70

.70

.68

.75

.70

.70

.69

fiQ

.65

.64

.62

.65

.70

.68

.65

.61

.61

.60

.68

.60

Oct.

0.80

.75

.62 

.61

.60

.61

.60

.61

.75

.62

.64

.74

.74

.75

.72 

.71

.72

Nov.

0.68

""."72"

.68

.68

75

79

.72

.64

.74

7?

.70

.72

.72 

.70

.70

TO

Dec.

0.74

.84 

.80

.79

.78

.82

7a

,77

.75

7?

.71

.72

.75

.76

.71

.71

.77

78

.81

.88

.86

.81

a Channel dry.

Daily discharge, in second-feet, at station No. 26 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1........... 

2. .......... 

3...........

4........... 

5...........

6........... 

7........... 

8...........

9........... 

10...........

Oct.

0.27 

.15 

.15

.15 

.13

.13 

.11

.10

.05 

.05

Nov.

0.05 

.05 

.05

.05

.05

.05 

.05

.05

.10 

.05

Dec.

0.05 

.05 

.05

.05 

.05

.05 

.05 

.05

.10 

.05

Day.

11........... 

12...........

14........... 

15...........

16........... 

17........... 

18...........

19........... 

20...........

Oct.

0.05 

.05 

.05

.05 

.05

.05 

.05

.05

.05 

.05

Nov.

0.05 

.05 

.05

.05 

.05

.05 

.10 

.10

.10 

.11

Dec.

0.10 

.05 

.13

.22 

.81

.18 

.52 

.40

.45 

.22

Day.

21........... 

22........... 

23...........

24........... 

25...........

26........... 

27........... 

28...........

29........... 

30........... 

31...........

Oct.

0.05 

.05 

.05

.05 

.05

.05 

.05 

.05

.05 

- .05 -.05

Nov.

0.12 

.13

.14

.15 

.16

.14 

.10 

.10

.05 

.05

Dec.

0.13

.05 

.05

.05 

.40

.28 

.13 

.10

.22 

.15 

.10

14694° WSP 336 14
258 WATER RESOURCES OF HAWAII, 1912.

Monthly discharge at station No. 26 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April. ........................

M^y... .......................

Mean 

discharge 

in secondfeet.

0.08

OS

.17

.03

.20

.08

.08

.08

Run-off 

(total in 

acre-feet).

4.72

4.78

10.50

1.84

11.50

4.92

4.76

4.92

Month.

1912 Continued.

July..........................

The year.. ..............

Mean

in secondfeet.

0.03

.05

.05

.05

.20

.07

.10

.09

Run-off 

(total in 

acre-feet).

1.79

3.07

3.07

2 no

12.30

4.17

6.15

61.50

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from 

rainfall record at camp near station No. 50.

Discharge measurements at station No. 27 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.J

Date.

Aug. 15......................

Sept. 27........ ..............

Nov. 22......................

Gage 

height.

Feet. 

1.61

1.26

1.80

Discharge.

Sec.-//. 

4.26

.86

6.45

Date.,

Nov.27..... ...................

Dec. 27.......................

height.

Feet. 

1.64

2.00

Discharge.

8eo.-ft. 

3.21

12.7

NOTE. Bed of stream of gobbles and bowlders. Section near gage is rough; probably permanent. 

One channel at all stages.

Daily gage height, in feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7........ .......

8...............

9...............

10...............

11...............

12...............

is

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28.. ............ -

29...............

so..........:....

31...............

Jan.

1.55

1.50

1.45

1.42

1.42

1.42

1.41

1.38

1.35

1.32

1.28

1.25

1.25

1.21

1.18

1.15

1.10

1.10

1.09

1.08

"i."66"

.98

.95

.91

Feb.

"6." 92"

.92

...."96"

.90

.88

.88

.85

1.25

1.20

1.05

1.00

.95

89

1.25

1.87

.......

.......

.......

.......

.......

.......

.......

Mar.

1.62

1.56

1.49

"i."45~

1.50

1.52

1.65

1.98

2.21

2.21

1.95

1.66

1.78

"i.go" .

1.82

1.71

1.79

1.72"

1.55

1.47

1.42

1.39

1.44

Apr.

1.71

1.80

1.84

1.86

.......

"2."26"

2.08

1.89

1.74

1.80

1.71

...L82"

1.85

1.82

1.99

1.95

1.81

......

1.89"

2.14

2.12

2.05

.......

May.

" 2.20

1.98

.......

.......

.......

"i.'sJT

.......

"i.'isf

1.41

.......

"L'37"

.......

1.30

"i."23"

"i.'ie"

June.

....... "i."66"

""."92

.......

.......

1.20

1.16

"i.'so"

.......

.......

1.22

.......

.......

1.42

1.40

1.49

1.41

.......

July.

1.90

1.80

1.74

1.68

1.52

1.48

1.42

1.79

1.49

.......

.......

1.30

" . i."29

1.39

.......

1.32

1.35

1.35

1.39

.......

Aug.

1.28

1.56

1.43

"i."44"

1.34

1.38

1.34

"i.'si"

1.38

1.60

1.41

.

1.52

.......

"i."25"

1.22

1.46

1.37

1.34

1.45

.......

.......

.......

Sept.

....... "i'os"

1.94

1.97

1.78

1.69

.......

1.53

1.85

1.69

1.48

1.39

1.58

1.51

1.44

1.29

1.04

1.42

1.34

1.32

.......

1.25

1.24

1.22

1.24

1.84

Oct.

1.71

1.62 "i.lo"

1.31

1.26

"i."27"

"i."34~

1.33

1.84

1.52

1.55

.......

1.88

2.02

.......

....... "ij.'ig"

1.88

1.75

.......

.......

2.00

Nov.

2.08

....... "i'oi"

"i."72"

1.69

2.05

.......

"i.'gs'

2.00

1.68

1.92

. .

2.02 " "2. 66"

1.86

1.81

1.94

....

1.81

1.70

1.64

"i.'so"

Dec.

1.96

1.98

1.82

1.T3

1.7T

1.95

1.81

1.72

1.64

1.59

1.54

1.54

1.63

l.fB

1.41

1.55

1.70

......

1.75

......

......

.....

1.92

' "i'ei

1.86

1.82

......
ISLAND OF HAWAII. 259

Daily discharge, in second-feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...............

2. ..............

3....... .......

4..... ..........

a........ ......

6...... ........

7...............

8...............

9.......... ....

10...............

11...............

12...............

13...............

14...............

IS...............

Sept. Oct.

15.0

15.5

17.0

18.0

20.1

15.0

11.0

9.8

9.0

9 a

6.0

6.0

5.8

5.7

5.5

Nov.

1.0

1.0

1.0

1.6

Q 9

3.7

4.2

i Q

8.4

A 9

7 Q

9.8

12.2

15.0

18.0

Dec.

5U

2.0

1.7

1.6

1.7

l.C

1.4

1.4

2.2

1.7

1.9

1.6

11.0

18.0

77.0

Day.

16...............

17...............

18...............

19

20........ ......

21...............

22............. .

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30..............

31...............

Sept.

14.0

13.0

14.0

Oct.

5.3

5.3

3.2

9 Q

2.5

2.2

2 ft

1.9

1.7

1.6

1.5

1.3

1.2

1.0

.9

1.0

Nov.

6.2

7.0

7 Q

8 7

9 8

11.4

10 A

15.0

17.0

1O J.

9.0

5.3

4.2

2.5

2.2

Dec.

39 4

61.0

61.0

77.0

42.6

18.0

7.6

4.8

3.0

91 £

8.4

6.2

5.3

9

0

9 ft

7.6

Daily discharge, in second-feet, at station No. 27 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1..... ..........

2...............

3...............

4...............

5... ............

6...............

8...............

g

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19............... 

20...............

21...............

99

23...............

24...............

9%

26...............

27...............

28...............

29.....:.........

30............... 

31...............

Jan.

2.80

2.80

2.80

2.30

2.00

1.70

1.70

1.70

1.70

1.50

1.40 

1.20

1.00

.90

.90.

.70

.70

.60

.60 

.50

.40

.40

.40

.40

.30

.30

.20

.20

.10

.10 

.10

Feb.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10 

.10

.90

.70

.30

.20

.10

.10

.90 

8.20

15.00

20.00

25.00

30.00

20.00

10.00

5.00

8.00

10.00

Mar.

5.00

 4.00

3.40

2.80

2.20

2.10

2.00

2.20

2.30

2.50

3.80 

12.00

26.00

26.00

11.00

3.90

. 5.80

10.00

10.00 

9.00

6.80

4.60

6.00

5.00

4.80

2.70

2.10

1.70

1.50

1.90 

25.00

Apr.

15.00

9.00

4.60

6.20

7.30

7.80

30.00

30.00

30.00

30.00

17.00 

8.70

9.00

5.10

6.20

4.60

10.00

6.80

7.60 

6.80

13.00

11.00

6.50

10.00

8.70

21.00

19.00

15.00

10.00

10.00

May.

10.00

15.00

20.00

25.00

30.00

12.00

8.00

5.00

5.00

5.00

5.00 

4.00

3.10

3.00

4.00

3.00

1.70

2.00

1.70 

2.00

1.50

1.00

1.40

1.50

1.10

.90

.80

.80

.70

.CO 

.60

June.

0.50

.40

.30

.20

.20

.10

.10

.10

.20

.30

.40 

.50

.70

.60

.60

.80

1.10

1.00

.90

.80

.80

1.00

1.20

1.40

1.70

1.60

2.20

1.70

1.50

1.50

July.

3.00

5.00

9.00

6.20

5.10

4.20

3.40

2.50

2.20

1.70

15.00 

10.00

6.00

8.00

2.20

2.00

1.50

1.50

1.30 

1.20

1.10

1.10

1.10

1.60

1.40

1.20

1.30

1.30

1.60

l.CO 

1.00

Aug.

1.00

1.00

5.00

2.80

1.80

1.80

1.90

1.30

1.50

1.30

1.20 

1.10

1.50

3.00

3.20

1.70

2.00

2.50

3.00 

2.00

1.50

.90

.80

2.00

1.40

1.30

2.00

2.00

1.50

1.50 

1.50

Sept.

5.00

12.00

20.00

30.00

17.00

11.00

12.00

5.80

4.30

3.00

2.60 

7.60

4.30

2.20

1.50

3.00

2.70

2.40

1.90 

1.10

.30

1.70

1.30

1.20

1.00

.90

.90

.80

.90

7.30

Oct.

4.60

8.40

3.00

1.60

1.20

.90

.90

1.00

1.00

1.30

1.20 

7.30

2.50

2.80

3.00

2.00

20.00

8.40

14.00 

12.00

12.00

20.00

30.00

24.00

8.40

5.30

30.00

25.00

20.00

15.00 

13.00

Nov.

17.00

15.00

25.00

20.00

14.00

5.00

4.80

4.30

16.00

25.00

20.00 

12.00

13.00

4.20

3.00

9.80

20.00

14.00

15.00 

13.00

7.90

6.SO

11.00

8.00

6.50

4.40

3.70

10.00

8.00

6.20

Dec.

20.00

30.00

11.00

12.00

6.80

4.80

5.70

11.00

6.50

4.80

3.70. 

3.10

2.70

2.70

3.60

5.80

1.70

2.80

4.40 

10.00

5.30

15.00

30.00

20.00

9.80

20.00

15.00

7.90

6.80

5.00 

5.00

NOTE. Dafly discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.
260 WATEB EESOUBCES OF HAWAII, 1912.

Monthly discharge at station No. 27 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1Q19

Mav-...- - - -

Mean 

discharge 

in secondfeet.

0.66

.79

1.64

1.05

5.37

6.71

12.50

5.66

Run-off 

(total in 

acre-feet).

40 70

47.10

101.00

64.60

OAQ Aft

744.00

Month.

1912 Continued.

July.......-..----.-.-........

Mean 

discharge 

in secondfeet.

0.81

3.39

1.84

5.52

9 CM

11.40

6.09

Run-off 

(total in 

acre-feet).

48.20

113.00

QOQ nf\

585.00

678.00

581.00

4,420.00

Discharge measurements at station No. 28 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 15...... .................

Nov.22... ....................

Gage 

height.

Feet. 

1.21

.68

1.58

Discharge.

Sec.-ft.

Q cyj

2.01

16.2

Date.

Nov. 27..... ..................

Gage 

height.

Feet. ' 

1 30

1 Qfi

Discharge.

Sec.-ft.

9 OK

42 9

NOTE. Bed of stream of cohhles and bowlders; section near gage is rough; probably permanent. One 

channel at all stages.

Daily gage height, in feet, at station No. 28 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Biltfcov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1... ............

2... ............

3...... ........ -

4...............

5...............

6............... 

7...............

8...............

g

10............... 

11...............

19

13

14..-..-......-.. 

15...............

16............... 

17...............

18...............

19............... 

20...............

21...............

22............... 

23............... 

24...............

25...............

26...............

27............... 

28......... ..... 

29...............

30...............

31...............

Jan.

1.12

1.08

1.02

1.01 

1.08

1.12

1.10

1.08

.85 

.80

.75

.72 

.70

.68

.62 

.52

.46

.44 

.42 

.41

.40 

.40 

.39

.38

Feb.

0.13

.10

.05

.05

.04

.04 0.9

.51

.43 

.31

.26 

.18

.09

.50

1.48

.......

.......

Mar.

1.29

1.12

1.02 

""95"

1.08

1.15

1.69 

1.99

2.32

2.30 

1.92

1.64 

1.77

"i.'sg"

1.69

1.50

1.78

1.68

1.24

1.07 

.94

.82

1.00

3 41

Apr.

1.69

1.79

1.81 

1.83

2.26

2.10

1.83

1.55 

1.64

1.54

1.68

1.73 

1.70

1.99

1.85 

1.68

1.93

2.22

2.13 

2.06

May.

2.25

1.95

:::::::

1 30

"i.'oo"

.98

"".81

.79

.78

69

June.

0.61

""."eo"

.......

.90

"~"86~

""."ss"

.84

.99

.90

1.20 

.93

July.

1.91

1.66

1.48 

1.36

1.19

1.11

.97

1.69 "i'.'u

.99

""."89" 

1.34

.85

1.02 

.95 

.92

Aug.

0.69

1.62

1.10

""."99"

.85

.98

.94

""."so"

.90

"i.'22"

.96

1.24

.78 

.64 

1.00

.71

.68

1.19

Sept.

2.12

1.98 

2.06

1.69

1 "1Q

1.34 

1.86

1.58

1.34 

1.04

1.32

1.11

.99 

.91

.84

.99 

.81

.78

.67

.64 

.61 

.60

1.85

Oct.

1.70

1.46

1.01

.86 

.78

.65

.80 

.80

1.48

1.40

1.82

2.05 

2.80

"2." 32"

1.80

1.68

2.01

Nov.

2 1 A. 

2.20 

"i."52"

1.46

2.15

"o'lc"

1.88

1.52 

1.20

1.85

1.90

"i.'92" 

1.72

1.62

1.82

1.54

1.40

1.31

1.88

Dec.

1.88

1.81

1.59

1.49 

1.61

1.82

1.67

1.49

1.36 

1.26

1

152

1.18 

1.28

1.47 

1.26

1.13

1.45 

2.68

1.54

1.90

2.04 

1.74 

1.64
ISLAND OP HAWAII. 261

Daily discharge, in second-feet, at station No. 28 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1

2. ..............

3...............

4...............

6...............

6...............

7...............

8...............

10.......... ....

11...........---.

19

1Q

14...............

15...............

Sept. Oct.

42.0

49.0

49.0

49.0

49.0

38.5

28.0

25.0

22.2

19.8

17.0

16.2

15.4

14.7

14.1

Nov.

1.7

1.7

1.7

3.0

6.0

8.8

li.6

16.2

22.2

14.4

19.8

^6.0

35.0

44.8

57.0

Dec

6.2

4.8

4.2

4.5

4.8

3.8

2.8

3.0

6.4

5.8

6.0

5.5

24.0

 45.5

122.0

Day. ,

16...............

17. ........... ...

18...............

19...............

20...............

21...............

22. ..............

23. ...... ........

24...............

25 .

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

42.0

28.0

35.0

Oct.

13.8

13.5

7.0

6.0

5.5

5.0

4.5

4.0

3.5

3.0

2.6

2.1

1.9

1.7

1.4

1.7

Nov.

17.0

19.8

22.2

25.0

28.0

32.2

36.4

40.6

44.8

49.0

23.0

15.0

13.5

11.0

8

0

Dec.

61.0

79 4

81.0

99.8

69.0

33.6

28.0

25.5

23.0

58.6

42.0

35. e

27.0

42.0

38.5

35.0

Daily discharge, in second-feet, at station No. 28 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. .............

2.. .............

3...............

4...............

5...............

6...............

7....... ........

8...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20.. .............

91

22...............

23...............

24...............

25.. ............ -

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

6.00

6.00

6.40

5.80

5.20

5.10

5.80

6.40

6.00

5.80

3.50

3.00

2.60

2.40

2.20

2.10

2.00

1.90

1.80

1.30

1 00

1 00

.90

.80

.80

.80

.80

.80

.70

.70

Feb.

0.20

.20

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

1.20

.90

.40

.30

.20

.10

1.20

14.00

100.00

140.00

170.00

100 00

30 00

20.00

10.00

10.00

Mar.

10.00

10.00

9.80

6.40

5.20

5.00

4.50

5.00

5.80

7.00

22.60

41.30

66.60

65.00

36.40

20.60

OC Kft

9Q flft

31.50

34.30

22 60

15.00

97 ftft

Qft ftft

22.20

8.80

5.70

4.40

3.20

168 00

Apr.

90.00

50.00

22.60

27.00

28.70

30.10

160.00

150.00

140.00

61.80

49.00

30.10

24.00

17.00

20.60

16.60

30.00

99 9ft

94 fai

23.00

41.30

qi Eft

22.20

40 00

37.10

KQ fin

M 4H

46.20

30.00

20.00

May.

30.00

40.00

50.00

61.00

100.00

38.50

20.00

10.00

10.00

10.00

10.00

10.00

10.00

10.00

5.00

5.00

5.00

5.00

4 00

4.00

4.00

3 10

3.00

9 Oft

o on

9 en

9 fift

2 4Q

2.20

9 1ft

June.

2.00

2.00

1.90

1.90

1.80

1.80

1.70

1.80

1.90

2.00

2.50

3.00

4-00

3.80

3.60

3.70

3.60

3.50

3 40

3 80

4.20

4 60

A QA

4.00

C ftft

4.30

4 00

4 00

July.

4.00

10.00

35.70

21.40

14.40

11.20

9.50

7.80

6.20

4.70

150.00

80.00

22.60

50.00

6.80

5.00

5 ftft

5 ftft

5.00

5 ftft

A Oft

4.40

3 Qft

10.80

6.00

3 eft

5.20

4.20

q K/\

9 fin

Aug.

2.10

40.00

25.00

19.80

6.00

5.40

4.90

3.50

4.80

4.40

3.70

3.00

4.00

4.50

8.40

4.60

6.00

8

0ft

15.00

10.00

6 40

9 fift

1 90

5.00

2 30

9 in

7 Oft

6.00

5 00

4 00

K (V\

Sept.

50.00

60.00

100.00

140.00

51.00

41.00

46.00

23.00

19.00

15.00

11.00

32.00

18.00

11.00

5 40

10.00

8 ftft

A on

4.10

3 40

4 90

3 m

0 QA

2 40

O f\fi

1 90

1.70

1.70

OO ftft

Oct.

23.00

14.00

10.00

5.10

3.60

2.80

2.40

1.90

2 40

3.00

3.00

36.00

14.00

12.00

12 00

10.00

60.00

9Q ftft

45.00

107.00

1OA ftA

150.00

170.00

67.00

9ft ftft

22.20

170 00

1CA fWl

150.00

100 00

43.00

Nov.

52.00

90.00

120.00

70.00

57.00

36.00

16.00

14.00

53.00

150.00

120.00

34.00

16.00

8.00

32.00

40 00

35.00

40 00

36.00

24.00

20.00

90 ftft

oo ftft

17.00

12.00

10.00

50.00

M\ nn

34 00

Dec.

70.00

100.00

34.00

29.00

19.00

15.00

19.00

29.00

22.00

15.00

11.00

9.20

7.60

7.60

9 fin

14.00

9 20

6.60

13.00

96.00

17.00

100 00

150.00

100.00

35.00

60.00

45.00

25.00

21.00

10.00

10.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are "»'ggi"g estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 60.
262 WATEB EESOUKCES OF HAWAII, 1912.

Monthly discharge at station No. 28 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

December. . ..................

1912.

May..........................

Mean 

discharge 

in socondf&st.

17.00

21.90

33.20

2.92

17.60

94 ^n

46.50

15.20

Run-off 

(total in 

acre-feet).

1,040

1,300

2,020

180

1,010

1 490

2,770

935

Month.

1912 Continued.

July..........................

October. . ....................

Mean 

discharge 

in secondfeet.

3.31

16.50

7.49

oq 7ft

50.50

44.40

35.60

24.00

Runoff 

(total in 

acre-feet).

197

1,010

461

1,410

3,110

2,648

2,190

17,400

Discharge measurements at station No. 29 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 15

Hydrographer.

E. O. Christiansen. 

.....do.............

£B.

Feet. 

0.34

Discharge.

Sec.-ft. 

0 («)

Date.

Nov. 22 

Dec. 12

Hydrographer.

E. O. Christiansen. 

.....do.............

height.

Feet. 

0.45 

.36

Discharge.

See.jt. 

0 

0

o Channel dry. 

NOTE. Bed of stream of silt, sand, and gravel. Shifting. One channel at all stages.

Daily gage height, in feet, at station No. 29 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

2...............

3............... 

4...............

5...............

6...............

7...............

8...............

9...............

10............... 

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23................

24...............

25...............

26............... 

27...............

28............... 

29...............

30...............

31...............

Jan.

0.42 

.41

.40

.42

.44

.48

.45

.42

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(«)

(0 

(0

" »)"

a)

a)

Fel

'"(a

r«

l«

(a 

(a

(a

(a

(O

(a

(a

(a

(*

("

0

....

3.

)"

)

)

n

--

Mar.

0.33

.25

.20

.30

.31

.31 

.32

.54

.59

.56

.44

.40

.66

.49

.40 

.35

.41

.41

.39

30

.13

.36

.75

Apr.

0.31 

.43

.40

.39

.49 

.49

.40

.40

.45

.39

.40

.41

.40

.56 

.55

.40

.49

.53

.72

.94

May.

"i.'is"

84

.......

.49

.12

(«)

.......

(0)

(0)

""(»)""

(0)

June.

(«)

(0)

.......

0.28

.25

.26

.22

.35

.34 

40

.32

July.

0.51 

.40

.40

.38

.24

.15

.25

.15

.15

.15

40

.40 

si

.30 

.32

Aug.

0.30

""."56"

.34

.37

.32

.36

.35

.31

40

.32

49

.......

01

00

.32

.30

.30 

.41

Sept.

.......

0.48

.49

.50

.43

.44

.38

.40

.35

.32

.30

.35

14

.30

.30

.32 

34

.32

.32

.19

Oft &

.49

Oct.

0.53

.40

""."36"

.22

.24

.30 

.32

.53

.34

.41

.46

.49

.60

.50

.44 

.46

Eft

NOT.

0.52

.......

.51

.42

.42

.64

.52

.52

.42

.42

.54

.55

.51

.50

.42

.49

.43

.40 

40

.......

.48

Dec.

0.49 

.50

.42

.41

.41

.50

.42

.41 

.38

.37

.34

.40

.44

.39

.36

.38

.46

.51

.42

.46 

"V&2

.46 

.45

o Channel dry.
ISLAND OP HAWAn. 263

Daily discharge, in second-feet, at station No. 29 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.......... ....

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11.......... ....

12...............

13...............

14...............

15...............

16...............

17................

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.01

.01

.01

.01

.01

.01

.01

.01

.01

.01

.0

.0

Feb.

0.0

.0

.05

.08

.16

.20

.10

.05

.02

.02

00

.02

Mar.

0.0

.0

.02

.2

.1

.01

.00

.00 («.<>

.00

.04

Apr.

0.03

.02

.01

.02

.01

.01

.05

.15

.10

.05

.05

.02

.01

.01

.02

.03

.07

.02

.01

May.

0.02

.01

.01

,20

.10

.05

(14

.02

.01

.01

.01

.01

.0

.0

June. -

0.0

.0

.1

.01

July.

0.01

.01

.0

.0

.01

.01

Aug.

0.01

.01

.0

.0

Septv

0.02

.05

.15

.20

.10

.05

.05

.02

.01

.01

.0

.0

Oct.

0.0

(«)

.0

.02

.02

.10

.15

.20

.05

.02

.10 .86

.10

.05

.02

.02

Nov.

0.1

.1

.10

.02

.01

.01

.15

.10

.01

.01

.01

.05

.02

.03

.01

.01

Dec.

0.02

.05

.01

.01

.00

.00

.01

.01

.01

.02

.03

.25

.16

.02

.01

.01

o Channel dry. 

Monthly discharge at station No. 29 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

October ......................

December ....................

1912.

April.........................

Mean 

discharge 

in secondfeet.

(a)

(a)

(a)

(«)

0.003

.020

.010

.030

Run-off 

(total in 

acre-feet).

0.20

1.40

60

1.60

Month.

1912 Continued. 

May..........................

July..........................

August. . .....................

September.. . ........*.........

Mean 

discharge 

in secondfeet.

0.020

.003

.006

.006

.030 

.040

.020

.020

.02

Run-off 

(total in 

acre-feet).

1.00

.20

.40

.40

1.60 

2.20

1.40

1.40

12.40

a Stream dry most of the time. Mean for month less than 0.01.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods lor which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50.

Discharge measurements at station No. 30 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 15......................

Sept. 26......................

Gage 

height.

Feel. 

0.40

.33

Discharge.

Sec.-fl.

Date.

Nov. 22......................

Dec. 12.......................

Gage 

height.

Feet. 

0.22

.04

Discharge.

Sec.-ft.

NOTE. Bed of stream of silt, sand, and gravel. Shifting. One channel at all stages.
264 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. SO at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and KuznetsoflE, observers.]

Day.

1.. .............

2...............

3...............

4............... 

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25............... 

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.62

.60

.59

.61

.62

.65

.64

.60

.55

.50

.49

.45

.40 

.35

(a)

(a)

(a)

(a)

{a)

(a\

(a)

(a)

(a)

Feb.

s

(a)

(a)

(a)

0.41

.30

.25 

.25

ft

%

.88

.......

Mar.

0.36

.31 

.30

.32

.36

.39

.40

.66

.69 .75'

.58

.50 

.65

.51

45

.40

.50

.50 

.41

.37

.31

.30

56

1.08

Apr.

0.58

.62 

.56

.66

.63

R9

.59

46

.59 

.52

.52

64

e«

.75

.59

.71

.68

TO

66

May.

0.80

.67

.40

"""in"

OQ

.21

.20

20

.19

June.

"o.'io"

.08

.29

.24 

"".31

.30

.40 

.38

AQ

.39

July.

0.53

.45 

.40

.38

.16

.16

.38

.49

.30

' (a)

(a) ( 44

.45

.42

.40

.45

Aug.

0.38

.54

.43

.48

.42

.39

.40

.49

.51

.52 

.34

.53

.32

.35

.35

.30 

.30

.45

Sept.

"o.'eo"

.60

.62

.49

.42

.40

.40

.35

.35

.31

.36

.35

.34

.32

.35

.35

.34

.32

.32

.32

fa)

»)

.65

Oct.

0.64

.42

.34 

.31

.30

.32

.32

.32

.55

.35

.44

.49

.50

.69

.24

.24

.27

.35

Nov.

0.30

""."23"

.20

.20

.45

.25

.25

.20

.20 

.31

.31

.28

.28

.24

.28

.22 

.20

.20

.26

Dec.

0.24

.30 

.12

.11

.12

.25

.14

.11

.09

.06

.05

.10

.20

.24 

.09

.10

.21

.30

.16

.23

.26

.16

.19

a Channel dry.

Daily discharge, in second-feet, at station No. 30 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. .............. 

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.04 

.04

.04

.04

.05

.05

- .04

.04

.02

.01

.01

.00

.00

Feb.

0.00

 '

.00

.01

.00

.00

.25

.35

.65

.30

.10

.05

.01

.01

Mar.

0.00

.00

.07

.08

.15

.05

.05

.00

.00

.01

.40

Apr.

0.05

.05

.10

.10

.05

.05

.15

.15

.05

.10

.15

.15

.05

.05

May.

0.05 

.15

.15

.13

.25

.10

.05

.05

.02

.02

.00

.00

June.

0.0

.0

.01

.01

July.

0.01

.01

.00

.00

.01

.01

.00

.0

Aug.

0.01

.01

.0

.0

Sept.

0.01

.01

0

.00

.05

Oct.

.......

Nov.

.......

Dec.
ISLAND OF HAWAII. 265

Monthly discharge at station No. 30 .at 2,700-foot level, near Silo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in second- 

 feet.

oQ.08

o.io

0.12

.02

.06

04

.07

.04

Run-off 

(total in 

acre-feet).

4.92

5.95

7.37

1.20

^ fin

2 60

4.40

2.20

Month.

1912 Continued.

July..........................

October. .....................

-

Mean 

discharge 

in secondfeet.

0.01

.01

.01

.01

.02

.03

.03

.03

Run-oft 

(total in 

acre-feet).

0.40

.40

.40

.40

1.20

1.60

9 on

20.40

a Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50.

Discharge measurements at station No. 31 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16......................

Oct. 25. ......................

Gage 

height.

Feet. 

0.75

.58

.95

Discharge.

Sec.-ft. 

3.52

.81

6.04

Date.

Nov.22............. ..........

Dec. 12.......................

Gage 

height.

Feet.. 

0.96

.76

Discharge.

Sec.-ft. 

6.45

3.08

NOTE. Bed of stream of cobbles and bowlders; section near gage rough; probably permanent. One 

channel at all stages.

Daily gage height, in feet, at station No. 31 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Biltkov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

3............... 

4............... 

5...............

6... ....... ...-- 

7...............

g

10...............

11...............

19

 10

14............... 

15....... ....... .

16............... 

17...............

18.. .............

19

20...............

21...............

22............... 

23............... 

24...............

25...............

26............... 

27...............

OS

29...............

30... ............

MI

Jan.

0.71 

.70 

.68

.71 

.72

.75

.72

.70 

.65

.62

.60

.59 

.56

.55

«;i

.48

.44 

.42 

.41 

.41

""."42"

.40

40

Feb.

"6.22" 

.21

.12

.11

.10 

.10

.10

.70

.61 

.41

.38 

.28

.10

.27

1.16

.......

Mar.

0.81 

.73 

.70

""."es"

.76

.80 

.88

1.21

1.38

1.46 

1.09

.91 

1.11

1.20

1.08

.94 

.94

.89

.78 

.69 

.64

.61

.72

1.71

Apr.

0.84 

.92 

1.02

1.06

1.32 

1.21

1.10

.91 

1.04

.90

.95

04.

.91

1.13 

1.09 

.91

1.04

1.17 

1.04 

1.06

May.

"i.~22"

1.09

.......

.91

""."69"

.67

""."ei"

.59

"".'58"

.50

June.

"6." 48 ~

""."is"

.......

.60

""."52"

""."ee"

.61

.81

.74 

.80 

.75

July.

1.22 

1.08 

.97

.92

.80

.77

.78

.89

""."79"

.70

""."68"

.96

.75 

.74 

.75

.70

Aug.

0.59

1.72 

1.36

.77

""."73"

.70

.72

.70

.68

.74

""."96"

.74

.89

""."ei"

.60 

.69

.65

.62 

.80

Sept.

"i.'is"

1.18 

1.69

1.02

.90

.81

.99

.84

.79 

.67

.82

.72

.69

.67

.68 

.76 

.64 

.64

.58 

.57 

.52

.54

1.19

Oct.

1.09

1.01

""."76" 

.66

.62

.60

.66 

.67

.85

.69

.88

.92

.93

1.25 

"i."25"

.96 

.90

1.11

Nov.

1.16

"i."i2"

""."ss"

.84

1.19

1.28

1.16

.99

.88

1.18

1.20

1.10

1.00 

.98 

1.01

.88

.85 

.82

.89

Dec.

1.08 

1.12 

.95

.90

.92

1.05

.99

.88 

.81

.77

.72

.75 

.82

.97

.82

.75

.92

1.36

1.04

"i."i8

.99

.99
266 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 31 at 2,700-foot level, near Hilo, Hiawai,

for 1911.

Day.

1. ..............

2...............

3...............

4...............

5................

6................

7...............

8...............

9...............

10...............

11................

12...............

13...............

15...............

Sept. Oct.

14.8

14.8

16.2

17.6

19.0

15.2

12.0

12.0

12.4

12.4

8.9

9.2

9.5

9.8

10.1

Nov.

1.0

1.0

1.0

- 3.8

7.4

8.3

9.2

10.4

12.0

7.4

8.6

9.8

11.2

13.1

15.2

Dec.

2.4

2.3

2.0

2.2

2.4

2.0

1.5

1.8

2.6

2.3

2.9

2.4

6.4

16.6

41.5

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24. ..............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

38.2

23.2

21.6

14.3

14.3

Oct.

10.4

10.4

6.4

3.8

3.5

3.0

2.6

2.6

2.4

2.4

2.3

1.6

1.5

1.3

1.0

1.0

Nov.

6.4

7.0

7.7

8.6

Q t\

10.4

11.6

13.1

14.8

16.6

7.0

4.1

4.0 <? %

 2.6

Dec.

1<? 1!

33.6

33.6

41.5

25.2

12.4

7.4

6.4

5.3

26.6

19.5

19.0

17.1

OK O

19.0

Daily discharge, in second-feet, at station No. 31 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1..... ..........

2...............

6...............

7...............

8...............

9............... 10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

1C

19...............

20...............

21..-.....-.--.-.

22........--....-

23..-.-.....-.-..

24...............

25...............

26...............

27...............

28. ..............

OQ

30...............

01

Jan.

2.40

2.40

2.40

2.30

2.00

2.40

2.60

3.00

2.60

2.30

1.60

1.30

1.00

.90

.80

.70

.60

.60

.50

.30

.20

.20

.10

.10

.10

.20

.20

.10

.10

.10

.10

Feb.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

2.30

1.10

.10

.10

.10

.10

.10

12.70

20.00

35.00

55.00

55.00

40.00

15.00

5.00

4.00

8.00

Mar.

5.00

5.00

4.00

2.80

2.30

2.00

1.60

2.00

3.20

3.80

5.00

14.80

23.20

29.30

10.10

5.50

1080

15.00

20.00

14.30

9.80

6.10

6.10

5.60

5.10

3.50

2.20

1.50

1.10

2.60

Apr.

25.00

12.00

4.40

5.70

8.00

9.20

40.00

55.00

40.00

20.00

14.80

10.40

8.00

5.50

8.60

5.30

10.00

6.30

6.10

5.50

11.60

10.10

5.50

7.00

8.60

13.10

8.60

9.20

5.00

8.00

May.

15.00

20.00

12.00

15.20

12.00

10.10

5.00

5.00

5.00

5.00

5.00

5.00

5.50

4.50

3.50

2.50

2.20

2. CO

1.90

2.00

2.00

2.00

1.10

3.00

.90

.90

.90

1.00

1.00

.50

.40

June.

0.40

.40

.30

.30

.30

.20

.20

.20

.20

.30

,40

.50

1.00

.80

.50

1.10

1.80

1.60

1.40

1.20

1.10

1.80

2.50

3.20

4.00

2.90

3.80

3.00

2.00

2.00

July.

5.00

10.00

15.20

9.80

6.80

 5.70

5.00

3.80

3.30

3.50

20.00

15.00

5.00

8.00

3.60

3.00

3.00

3.00

3.00

3.00

2.30

2.20

2.00

6.60

4.80

3.00

2.90

3.00

2.30

2.00

1.50

Aug.

0.90

1.00

50.00

22.10

3.40

3.00

2.80

2.30

2.60

2.30

2.20

2.00

2.90

3.50

5.30

2.90

3.00

5.10

8.00

5.00

3.00

1.10

1.00

2.20

1.60

1.30

3.80

5.00

4.00

3.00

3.00

Sept.

5.00

10.00

20.00

35.00

13.50

13.50

47.40

8.00

5.30

4.60

3.90

7.20

4.40

3.60

1.90

4.10

3.00

2.60

2.20

1.90

2.00

3.20

1.50

1.50

1.20

.90

.80

.50

.60

13.90

Oct.

10.10

7.70

5.40

3.20

1.80

1.30

1.20

1.00

1.40

1.80

1.90

4.60

2.20

5.00

5.00

4.00

20.00

5.70

5.90

16.60

20.00

25.00

40.00

16.60

6.60

5.30

30.00

50.00

40.00

25.00

10.80

Nov.

12.70

10.00

30.00

15.00

11.20

5.00

4.50

4.40

13.90

40.00

35.00

18.10

12.70

7.20

5.00

13:50

25.00

14.30

20.00

10.40

7.40

7.00

7.70

6.30

5.00

4.60

4.10

15.00

10.00

5.20

Dec.

15.00

20.00

9.80

11.20

6.30

5.30

5.70

8.90

7.20

5.00

3.90

3.40

2.60

3.00

4.10

6.80

4.10

3.00

5.70

22.10

10.00

20.00

35.00

20.00

8.60

15.00

13.50

7.20

7.20

5.00

5.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.
ISLAND OP HAWAII. 267

Monthly discharge at station No. 31 at 2,700-foot level near, Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

8.07

8.21

13.50

1.10

8.79

o 70

12.90

4.91

Run-off 

(total in 

aere-feet).

498

490

833

67.60

506.00

540 00

768.00

302.00

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

1.31

5.40

5.14

12.10

12.70

9.66

7.50

Run-off 

(total in 

acre-feet).

78.00

332.00

316.00

* 443 oo

74400

756.00

59400

5,450.00

Discharge measurements at station No. 32 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographpr.l

Date.

Aug. 16.......................

Oct. 25. ......................

Gage 

height.

Feet. 

0.34

.33

.50

Discharge.

Sec.-ft. 

0.27

.06

.94

Date.

Nov. 22.......................

Dec. 12.......................

Gage 

height.

Feet. 

0.48

.38

Discharge.

Sec.-ft. 

1.27

.37

NOTE. Bed of stream composed of sand and gravel with few small cobbles; shifting. One channel at 

all stages.

Daily gage height, in feet, at station No. 32 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]

Day.

1.. ............. 

2...............

3...............

4............... 

5...............

6............... 

7...............

8...............

9............... 10...............

11...............

12...............

13...............

14...............

15............... 

16...............

17...............

18...............

19...............

20...............

21............... 

22............... 

23...............

24............... 

25...............

26............... 

27............... 

28............... 

29...............

30...............

31...............

Jan.

......

0.62

.60 

.58

.62 

.64

.68

.66

.62

.65

.62

.50

.48 

.46

.40

.38

.31 

.31 

.31

.30

".'32' 

.31 

.30

.29

Pel).

.......

8

(o)

(o)

(a)

(«)

(«)

0.35

V27

(«)

(a)

(a)

fa)

.31

.59

.......

Mar.

.......

.40 

.40

""."46"

.41

4Q

40

.61

7O

.79

.63

.57

.96

.88

.71 

.68

AQ

""."59"

.45 

.40 

.40 

.38

.62

1 04

Apr.

0.42

.48 

.54

.61

.68

.62

54

.45

.51

.48

.49

KA

.54

.64 

.57 

so

"".'62'

.68 

.65 

.64

May.

.......

0.85

.62

.52

.......

40

40

"."ss"

""."si

""."so"

on

June.

.......

"6.'20"

""."is"

.35

.30

.32

.30

""."46"

.38

.51 

.42

July.

.......

0.60

.54 

.46

.42

.35

.35

.40

.50

.38

.40

'" jtn

.35

.45 

.42 

.40 

40

Aug.

0.35

.J60

.59 

.39

""."42"

.38

.42

.40

.38

40

.44 

.34

.45

"".'28" 

.24

.30 

.25

.22 

.40

Sept.

.......

"6i87"

.80

.85

.53

.48

.40

.43

.40

.40

.38 

.40

.38

.38

.35

.35

.42 

40

.39

.32 

.31 

.31

19

.68

Oct.

0.62

.49

.34 

.32

.32

.32

.32

.32

.54

.55

.38

.42

.50

.60

.84 

.50

.47

84

Nov.

0.70

""i&i"

""."39"

.39

.67

.75

.70

.50

.40 

.68

.67

<ys

.51 

.48 

48

"".'42'

.41 

.40

.50

Dec.

......

0.60

1.00

.80

.59 

.50

.51

4Q

.42

ATI

.38

VA

.35

.38 

.45

.44

.32

.42

.65

.42

"".'59

""."57 

.42 

44

<* Channel dry.
268 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 32 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

IS...............

Sept. Oct.

7.4

8.1

8.3

8.5

8.8

8.1

7.2

7.1

6.9

6.7

6.1

6.1

5.9

5.8

5.8

Nov.

0.5

.5

.5

1.2

2.2

2.6

2.9

3.3

3.7

9 7

3.0

3.4

4.0

4.5

5.1

Dec.

2.4

2.2

1.4

1.4

1.7

1.2

.9

1.2

2.4

2.2

9 J.

2.2

6.1

10.8

17.5

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

10.3

7.2

8.1

6.4

6.9

Oct.

5.6

5.6

3.7

2.2

1.8

1.4

1.1

1.1

1.0

.9

.8

.8

.8

.6

.6

.6

Nov.

3.4

3.8

4.2

4.7

5.1

6.8

6.4

7.1

7.8

8.5

6.1

4 1

4.1

3.5

2.8

Dec.

9.0

14.9

13.7

16.2

11.9

 8.5

5.1

47

4.1

. 11.9

7.8

7.2

7.1

10.3

9.9

8.1

Daily discharge, in second-feet, at station No. 32 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...............

2............... 

3.........--...- 

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11............... 

12..-.......-.-..

11

14..-----........ 

15...............

16...............

17...............

18....-.--....... 

19

20. .............. 

21...............

22...............

23

24............... 

25...............

26...............

27.....-..-.-....

28...............

29............... 

30...............

31...............

Jan.

0.40

.40 

.45

.40

.35

.46 

.50

.65

.60

.45

.55 

.45

.20

.20 

.20

.15

.15

.10 

.10

.10 

.05

.05

.05

.05 

.05

:05

.05

.05

.05 

.05

.05

Feb.

a\

:»j

, /

 (° -

(a

(«

a0.10

.05 

(a)

(a)

(°05

.40 

4.00

8.00

10.00

6.00 

4.00

2.00

2.00

2.00

2.00

.......

Mar.

1.00

.80 

.65 

v\

.50

.50 

.50

.50

60

1.15

.50 

2.30

4.65

4.65 

2.55

1.90

- 7 Jil

7.00 

6.50

6.10 

3.55

3

1 C

3.30

2.70 

2.10

.86

CA

*in

.40 

2.45

8.80

Apr.

4.00

2.00 

.65 

1.05

1.60

2.30 

8.00

7.00

6.00

3.15

2.45 

1.60

1.20

.85 

1 30

1.05

1.10

1.15 

1.60

1.60 

2.70

1.90

2.10

2.30 

2.45

3.15

2.80

2.70

2.00 

2.00

May.

3.00

4.00 

3.00 

5.60

7.00

2.45 

2.00

1.50

1.50

1.50

1.50 

1.50

1.40

1.20 

1.00

.80

.50

.50 

.50

.50 

.40

.40

4ft

.30 

.15

.10

.10

.10

.10 

.10

.10

June.

.......

.......

.......

0.30 "~."io"

.20

.10

""."56"

.40

1.30

.65

.......

July

0.50

1.00 

2.20 

1.60

.90

.65 

.50

.30

.30

.50

.40 

.30

1.20

.30 

.40

.40

.40

.40 

.50

.50 

.50

.50

.50

.30 

.60

.85

.65

.50

.50 

.40

.30

Aug.

0.30

.30 

2.20 

2.10

.45

.50 

.65

.40

.65

.50

.40 

.40

.50

.60 

.80

.25

.50

.85 

.90

.50 

.30

.10

.05

.10 

.10

.05

.50

.40

.40 

.30

.30

Sept.

3.00

4.00 

6.00 

9.00

6.90

4.80 

6.60

1.50

1.10

.80

.50 

.70

.50

.50 

.40

.50

.40

.40 

.40

.30 

.30

.60

.50

.50 

1 '40An

.20

.10

.10

.20 

3.20

Oct.

2.60

1.10

.70 

.30

.20

.20 

.20

.20

.20

.20

.20 

1.60

1.70

.40 

1.00

2.00

4.00

.60 

1.20

2.20 

3.00

5.00

8.00

5.40 

1.20

1.00

10.00

8.00 *.oo

6.00

5.40

Nov.

3.40

3.00 

6.00 

3.00

1.60

1.00 

.50

.50

3.00

9.00

8.00 

4.10

3.40

1.20 

.50

3.20

7.00

3.00 

4.00

2.00 

1.30

1.10

1.10

1.00 

.60

.60

.50

2.00

1.50 

1.20

Dec.

5.00

8.00 

2.20 

8.10

4.80

2.10 

1.20

1.60

1.10

.60

.50 

.40

.20

.30 

.40

.90

80

.20 

.60

2.80 

.60

8.00

9.00

6.00 

2.10

3.00

1.90

.60

.80 

.60

.50

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated rom diagram prepared from record of daily 

rainfall at the camp near station No. 50.
ISLAND Or HAWAII. 269

Monthly discharge at station No. 32 at 2,700-foot level, near Hilo, Hawaii, for 1911-12 

Month.

1911.

1912.

May.. ....... .................

Mean 

discharge 

in secondfeet.

4.37

3 Q9

6.66

.24

1.40

0 CO

2.48

1.39

Eun-off 

(total hi 

acre-feet).

269.00

234 00

411. 00

14.80

1 KG f)f\

148.00

85.50

Month.

1912 Continued.

July..........................

Mean 

discharge 

in second- 

£eet.

0.50

.61

w

1.75

2.64

2.61

2.42

1.59

Run-off 

(total in 

acre-feet).

29.80

37; 50

32.60 iru nn

162.00

155.00

149.00

1, 160. 00

Discharge measurements at station No. 33 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16.............. .........

Oct. 25. ......................

Gage 

height.

Feet. 

0.69

.52

.78

Discharge.

Sec.-ft. 

0.07

.00

.19

Date.

Nov.22.... ...................

height.

Feet. 

0.98

.62

Discharge.

Sec.-ft.

NOTE. Bed of stream composed of sand and gravel with few small cobbles; shifting. One channel at 

all stages.

Daily gage height, in feet, at station No. S3 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefi, Selitonott, and Kuznetsoff, observers.]

Day.

1.... ...........

2...............

3............... 

4...............

5...............

6. ..............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

9B

29...............

30...............

31

Jan.

0.81 

.78

.75

.82

.82

.88

.85

.82

.75

.72

.70

.70

.62

60

(a)

(a)

a

a

a

(a)

W (°)

(0)

Feb.

"(«)"

(a)

(a)

(«)

(a)

(a)

(a)

0.71

.60

(a)

(a)

( a)

(aL.75

.92

Mar.

0.73 

.70

.65

.68

.69

.69

.72

.90

97

1 00

.83

80

1.02

.89

.80

.74

.81

.80

.71

.68

64

.62

.78

1.33

Apr.

0.74 

80

.82

.88

.92

.89

.80

.74~

.81

.76

.79

.80

80

.91

.89

.78

.86

.90

.84

on

May.

"i.'oo"

.86

.71

.60

.60

VI

En

.49

.40

June.

0.31

(a)

AH

.38

.46

.40

.70

.68

.73

fiQ

July.

0.89 

.84

.80

.78

.75

.75

.67

80

.72

.72

.71

.82

.70

.72

.65

.68

Aug.

0.59

'80

.70

.71

.68

.70

.72

.68

.72

.76

.69

80

.60

.59

.64

.59

.55

.77

Sept.

0.86

.78

.81

.78

.80

.70

.78

.76

.79

.76

.71

.62

.65

.65

.68

.62

.61

.56

.49

JO

.42

.90

Oct.

0.84

.75

""."66~

.60

.55

ftfi

.60

.62

.84

.66

.70

.76

.86

.90

.88

.74

.76

Qfl

Nov.

0.84

-------

.79

.67

.69

.98

.84

.86

.80

.72

.94

.90

.81

.79

.80

.80

.74

.72

.70

.75

.

Dec.

0.82 

.90

.80

.78

.74

.80

.78

.71

.66

.62

.60

.65

.70

80

.66

.66

.79

1 04

.76

OQ

.83*r<

.74

Channel dry.
270 WATBE EESOUECES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 33 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ........ ......'

2...............

3...............

4...............

5...............

6...............

7. ..............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

«

Sept. Oct.

0.35

.35

.38

.41

A<\

.43

.40

.40

.40

.33

.33

.34

.34

.35

Nov.

(a)

£« 

("0

.25

.28

.30

.33

.35

.35

.36

.37

.38

.39

.40

Dec.

0.12

.11

.10

.11

19

.12

.11

10

.16

.14

.16

.15

.21

1.24

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22............... o*>

25...............

t

26...............

27...............

28...............

29...............

30...............

31. ..............

Sept.

0.45

.33

.35

.35

.35

Oct.

0.35

?^

.22

.15

.13

.12

.10

.10

.10

.05

(a)

(a)

(a)

(a)

Nov.

0.27

97

97

.27

.27

.27

.27

97

.27

.27

.18

.16

.14

1?

.12

Dec.

0.43

.92

.84

1.00

.48

.23

.18

.16

.15

.64

.40

.37

.35

.60

.52

.45

a Channel dry.

Daily discharge, in second-feet, at station No. 33 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

16.............;.

17...............

18. ..............

19. ..............

20...............

21...............

22...............

23...............

24...............

25...............

26.;.............

27...............

28...............

29. ..............

30...............

31...............

Jan.

0.15

.15

.15

.15

.10

.15

.15

.20

.15

.15

.10

.10

.10 

.10

.05

.05

.05

(a)

(«)

(a)

(a)

(a)

(a)

(a)

(a)

a)

")

a)

a)

(a)

Feb.

(a)

(a)

(a)

(«)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

(a)

0.10 .05'

(a\

(«)

(a)

(a)

.10

.20

.40

.60

.80

.50

.20

.10

.10

.10

- .10

Mar.

0.10

.10

.10 .05'

.05

.05

.05

.10

.10

.10

.20

.25 

.25

.15

.15

.25

.20

.20

.15

.10

.15

.15

.15

.10

.10

.05

.15

.65

Apr.

0.40

on

.10

.15

.15

.20

.50

.40

.30

.20

.20

.10 

.10

.15

.15

.15

.15

.15

.20

.20

.15

.20

.20

.20

.15

.15

.10

.10

May.

.20

.20

oc

.40

.20

.10

.10

.10

.10

.10

.10 

.10

.10

.05

.05

.05

.05

.05

.05

.10

.10

.05

.05

.05

.05

.05

June.

.10

.10

.10

.10

July.

0.10

.10

.20

.15

.15

.15

.15

 .10

.10

.10

.30

.20

.15 

.10

.10

.10

.10

.10

.10

.10

.10

.10

.15

.10

.10

.05

.10

.10

.10

Aug.

0.05

.17

.25

.15

.10

.10

.10

.10

.10

.10

.10

.10

.10 

.10

.15

.10

.10

.15

.10

.10

.10

.05

.05

.05

.05

.05

.15

.10

.10

.10

.10

Sept.

0.30

.50

.20

.15

.15

.15

.15

.10

.10

.15

.15 

.15

.15

.10

.05

.05

.05

.10

.05

.05

.05

.05

.05

.05

05

.20

Oct.

0.15

.10

.10

.05

.05

.05

.05

.05

.05

.05

.05

.15

.05 

.10

.10

.10

.30

.15

.20

.20

.30

.40

.50

.20

.10

.15

80

.50

.40

.30

.20

Nov.

0.15

.10

.30

.20

' .15

.10

.10

.10

.25

.50

.40

.15

.20 

.15

.10

.25

on

.20

.20

it

.15

.15

.15

.10

.10

.10

.10

.10

.10

.10

Dec.

0.25

.40

.15

' .20

.15

.15

.10

.15

.15

.10

.10

.05

.05 

.05

.10

.15

.10

.10

.15

.30

.15

.50

.70

.50

.15

.20

.15

.10

.10

.10

.10

« Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.
ISLAND OF HAWAII. 271

Monthly discharge at station No. 33 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April............}.............

May.............;............

Mean 

discharge 

in secondfeet.

0.24

.24

.36

.07

19

.15

1O

.10

Run-off 

(total in 

acre-feet).

14.90

14.60

22.30

4.30

6.90

9

00

11.30

6.15

Month.

1912 Continued.

July.........................

Mean 

discharge 

in secondfeet.

0.10

12

.10

.15

.19

.17

.18

.14

Run-off 

(total in 

acre-feet).

5.95

7.38

6.15

8 93

ll!?0

10.10

11.10

oo oft

Discharge measurements at station No. 34 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date

Aug. 16. .........

Sept. 26..........

height.

Fed. 

0.98

.89

1.15

Discharge.

Sec.-ft. 

0.66

.28

1.43

Date.

Nov. 22......--..-.---..--.--.

Dec. 12....----.-.-.........-.

height.

Feet. 

1.29

1.02

Discharge.

Sec.-ft. 

2.37

.76

NOTE. Bed of btream composed of gravel and small cobbles. Section is somewhat rough, probably 

permanent. One channel at all stages.

Daily gage height, infect, at station No. 34 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10. ..............

11...............

K.... ...........

13............... 

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24............... 

25...............

26............... 

27............... 

28...............

29...............

30...............

31...............

Jan.

1.08

1.02

1.01

1.05 

1.05

1.10

1.10

1.08

.98

.92

.90

.81

.81

.81

80

80

80

.78

.76

.75 

1......

".'re"

.76

.75

.74

Feb.

0.70

.70

.70

.70

.68

.68

.70

.82 

.70

.65

.65

.65

.62

.89

1.16

.......

Mar.

0.99

.92

.90 

""."96"

.99

1.00

1.00

1.28

1.48 

1.48

1.18

1.10

1.21

1.21

1.13

1.13

1.18 "i."i4"

1.01 

.99 

.93

.89

1.02

Apr.

1.04

1.14

1.17 

1.16

1.38

1.28

1.18

"i."62"

1.24

1.09

1.12

1.14

1.11

1.31

1.26

1.16

"~L28~

1.30 

1.20 

1.16

May.

1.34

1.09

1.00

.92

.91

.88

""."82"

""."so"

.71

June.

0.60

CO

.70

.&8

.71

.70

"i.'oo"

.95 

1.05

Qfi

July.

1.31

1.22

1.12 

1.10

.96

.95

l.li

.97

.95

.95

1.04

1.00 

.99 

.95

.94

Aug.

0.90

1.32

1.20

1.05

.94

1.00

1 00

.95

1.00

1.10

.99

1.11

.91

.91

.94 

.91

.90 

1.03

Sept.

1.28

1.29 

1.40

1.18

1.11

1.01

1.16

1.05

.97

1.05

.90

.97

.95

1.04

.94

.92

.90

.89 

.84

.85

1.29

Oct.

1.27

1.15

.99

.92 

.89

.88

90

.96

1.12

1.00

1.12

1.18

1.31

1.34 

1.14

1.11

1.35

Nov.

1.28

1.25

"i.'og"

1.08

1.38

1.29

1.30 

1.20

1.11

1.37

1.32

1.29

1.28

1.20

1.28

"i'.iz 

1.11

1.10

1.18

Dec.

1.26

1.29

1.16

1.10 

1.11

1.21

1.14

1.10

1.05

1.02

1.00

1.04

1.17

1.01

1.00

1.18

1.40

1.15

"i."26

"i."20 

1.14

1.14
272 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 34 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ...............

2...............

3. ............. .

4..............

5...............

6................

7......-.-.---..

8...............

9................

10. ....... .......

11...............

12..............

13...............

14................

15................

Sept. Oct.

3.84 3 99

3 99

4.14 4. in

3 CO

2

7C

2

QA

3.06

2 on

2

0A

2 20

2 f)f\

Nov.

0.30

.30

on

.55

1.65

1 Qfi

0 It

2 64

2 90

1.65

I Qft

2

01

9 7f?

o 07

3 99

Dec.

0.64

.55

JTA

CO

fift

CA

.35

.42

7ft

64

7S

60

2 20

16.40

Day.

16...............

17................

18................

19................

20...............

21...............

22...............

23...............

24................

25................

26................

27................

28...............

29...............

Oft

31

Sept.

6.50

6.50-

3.52

Oct.

2.20

2.20

1.46

.96

.82

.68

.55

.55

.55

.52

.52

.42

40

.35in

.30

Nov.

1.52

2.09

2.42

2.75

3.22

3.68

4.30

5.18

6.06

1.87

1.52

1 TO

1.06

7S

Dec.

2.53

10.90

10.60

12.30

7.04

3.06

1.52

1.13

.78

9.76

5.40

5.40

4.30

9.76

9.20

7.85

Daily discharge, in second-feet, at station No. 34 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

12............... 11

14.... ...........

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

27...............

28...............

29............... in

31.. .............

Jan.

0.90

.90

.90

.65

.60

.80

.80

1.00

1.00

.90

.50

.35

30

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.15

.15

Feb.

0.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.20

.20

.10

.10

.10

.10

 .30

1.40

6.00

12.00

8.00

3.00

2.00

1.00

1.00

1.00

.......

Mar.

0.80

.60

.50

.35

.30

in

qA

in

.50

.55

.55

2.55

6.05

6.05

1.50

1.75

1 75

1.75

1 7%

1.20

1.20

1.50

1.40

i 9>;

.60

.50

.40

Oft

.65

10.90

Apr.

5.00

3.00

7C

1.25

1 d^

1.40

9 Aft

8.00

7 QO

2.55

1.50

1.10

.65

2 05

.95

1.30

1.15

1.25

1.05

2.90

2

0ft

1.40

2 Aft

9 55

9 75

1.65

1.40

1.00

1.20

May.

2.00

2.20

2 on

3.35

5.00

.95

.90

.80

.80

.70

.60

.60

.55

.40

.40

.40

.35

30

.30

.30

.30

so

.30

.20

.20

.20

.20

.20

.20

.15

.15

June.

0.15

.15

.10

.10

.10

.10

.10

.10

.10

.10

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.20

.20

.40

.55

.40

.80

.45

.40

40

.......

July.

0.40

.50

2.90

1.85

1.15

1.00

.80

.55

.45

.40

4.00

1.25

.80

.45

.40

.40

.40

.40

.40

.40

.40

.40

.75

.65

.55

.50

.40

.40

40

.30

Aug.

0.30

.40

3.05

1.65

.80

.70

.55

.40

.55

.55

.50

.40

.55

.60

.50

.60

1.05

1.20

w

.40

in

.30

.40

.30

30

.90

.70

w

An

.50

Sept. '

2.00

3.00

5.00

8.00

2.55

2.65

4.30

1.50

1.05

.80

.60

1.40

.80

.50

.50

.80

.50

.30

.50

.40

.40

.75

.40

.35

.30

.30

.30

.25

.25

9 fi5

Oct.

2.40

1.30

1.00

.50

.35

.30

.30

.30

.30

.30

.45

1.15

.55

.80

.80

.60

2.50

1.15

1.50

9 Oft

3.00

6.00

10.00

3.35

1.25

1.05

12.00

5.00

5.00

4.00

3.50

Nov.

2.55

7.50

4.00

3.00

2.20

1.50

.95

.90

4.00

9.00

7.00

2.65

2.75

1.65

1.05

3.85

6.00

q ftc

6.00

9 fi^

2.55

1.65

2.55

1.80

1.15

1.05

1.00

1.20

1.40

I

rft

Dec.

4.00

7.00

2.30

2.65

1 4fl

1.00

1.05

1.75

1.25

1.00

.80

.65

.55

.60

.75

1.45

.60

.55

1.50 4, in

1.30

4.30

7.50

5.80

2.30

3.00

1.65

1.25

1.25

1 00

1.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared frcm record of daily 

rainfall at the camp near station No. 50.
ISLAND OF HAWAH. 273 

Monthly discharge at station No. 34 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911, 

October. .......................

1912J

April.. .......................

May..........................

Mean 

discharge 

in secondfeet.

1.90

2.29

4.25

.42

1.67

1.58

2.45

.82

Run-off 

(total in 

acre-feet).

117.00

137.00

262.00

25.80

% in

97.20

146. 00

50.40

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.22

1.02

.67

1.44

2.37

2.11

1.47

Run-off 

(total in 

acre-feet).

13.10

62.70

41.20

146.00

175.00

130. 00

1,070.00

Discharge measurements at station No. 35 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Datej

Oct. 25..........i............

height.

Feet. 

0.21

.35

Discharge.

Sec.-ft.

Date.

Nov.22. .....................

Dec. 12. ......................

Gage 

height.

Feet. 

0.34

.31

Discharge.

Stc.-ft.

NOTE. Bed of Stream of sand and silt; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 35 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1.. .............

2...............

4...............

5................

6...............

7...............

8...............

9

10............... 

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20.

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

ft (°)

.36

.38

.41

.40

.38 

(a)

(a)

(a)

(a)

(«)

'(.)

(a)

(a)

a)

a)

"}

a)

(0)

{.}

M(«)

Feb.

(«)

(«)

(a)

(a)

(°) 

(a)

(a)

(a)

(a) 

(a)

fa)

ft(a)

0.31

.62

Mar.

0.30

.30

(0)

.32

.36

.39 

.31

.40

.51

.51

.38

.35

.49

.41

.34

.30

.44

AK

on

.15

ft(o)

.42

.54

Apr.

n v>

.36

.34

.36

.42

.38

.39

.31

.38

.32

id

.32

.33

.45

.37

.33

0.4

.41

id

.32

May.

0.65

.40

.......

(a)

.15

.31

(0)

(a)

(")

(a)

June.

(0)

(a)

.......

0.28

.25

(0)

(a)

(0)

(a)

' 01 (»)

July.

0.41

.39

.35

.15

.18

.34

.32

.32

.30

Aug.

O eo

.38

.32

.38

.35

.i5

.37

.32

.30

.48

30

.25

1/3 '"

Sept.

6.33

.33

.39

.36

.31

30

.35

.31

.31

.25

.30

.28

.30

.29

.30

.30

.29

.29

.25

.40

Oct.

0.42

.38

.31

.30

.25 

.30

49

.35

.36

DO

.38

.55

.36

34

An

.40

Nov.

0.30

4O

OA

V\

55

.......

.40

.38

y>

.25

.44

40

4(1

.40

.32

.38

Oft

.30

Qfi

OK

Dec.

A pi

OQ

.30

.30

01

34

01

.31

01

OT

30

DO

34

id

01

oo

DO

DO

DO

 MS

.36

.33

.32

14694° tosp 336 14 18

Channel dry.
274 WATEE EESOUECES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 35 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

01

Jan.

0.05

.05

.05

.05

Feb.

0.05

.20

dn

.50

30

.10

.05

.05

Mar.

0.05

.05

.05

.05

.10

.10

.05

.05

.05

.10

Apr.

0.05

.05

May.

0.10

.10

.20

.20

June.

0.05

.05

July.

~0.05

.05

(o)

(o)

.05

.05

.05

(a)

(a)

(o)

(o)

Aug.

(a)

0.10

.05

(o)

(o)

(o)

(o)

.05

.05

.05

.05

(a)

(o)

.05

.05

Sept.

(a)

(a)

(a)

Oct.

.......

(a)

(«j

Nov.

.......

Dec.

......

« Channel dry. 

Monthly discharge at station No. 35 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.........................

Mean 

discharge 

in secondfeet.

o0.02

o.03

.01

06

.05

.06

Run-off 

(total in 

acre-feet).

1.23

1 70

2.46

.40

3 cn

9 Sft

3.00

3.80

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.050

.003

.003

003

.030

.030

.040

.03

Run-off 

(total in 

acre-feet).

3.00

.20

.20

OA

1.60

2.00

9 4ft

23.20

o Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50. 

Discharge measurements at station No. 36 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16. ......................

Sept. 26.... .................. 

Oct. 25.......................

Gage 

height.

Feet. 

0.58

.55 

.70

Discharge.

8ec.-ft. 

0

"""6." 02

Date.

Nov.22.... ...................

Dec. 12...... .................

Gage 

height.

Feet. 

0.69

.59

Discharge.

Sec.-ft. 

0.02

0

NOTE. Bed of stream of sand and silt; shifting. One channel at all stages.
ISLAND OF HAWAII. 275

Daily gage height, in feet, at station No. 36 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10............... 

11...............

12...............

13. ..............

14...............

15...............

16...............

17...............

18...............

19...:...........

20...............

21...............

22...............

23...............

24...............

25...............

26............... 

27...............

28...............

29...............

30...............

31...............

Jan.

0.48

.45

.45

48

.50

.52

.50

AC

.40

.40

.30

(<*)

(a)

(a

(«

(a

"(a "

fa

(a

F

(

eb.

a)

a)

a\

a) 

a)

a)

a)

a)

a)

(a)

M

1.48

.49

Mar.

0.64

.62

.61

.60

.61

.62

.63

.74

.83

.82

.71

.69

.76

.78

.70

.68

.71

.69

.64 

.61

.61

.60

.69

1.08

Apr.

0.71

.73

.71

.72

.81 

.79

.71

.69

.74

.69

.72

.74

.77

.81

.78

.74

.79

.76

.75

.69

May.

0.85

.69

.61

.54

.54

40

.35

""."si"

on

June.

0.24

.21

.......

.39

.35

.48

.39

- .68

.61 

.69

.61

July,

0.78

.74

.72

.72

.71

.70

.64

.72

.70

.60

.56

.75

.65 

.59

.60

.60

Aug.

0.54

1.00

.74

.62

.62

.59

.64

.65

.58

.58

.63

.60

.63

.58

.56

.56

.55

.54 

.61

Sept.

0.75

.74

.79

.70

.70

.67

.66

.69

.65

.64

.64

.64

.62

.61

.61

.62

.61

.55 

.55

.54

.52

.72

Oct.

0.72

.70

.65

.62

.61

.60

.61 

.62

.73

.62

.62

.72

.77

.82

.76

.70

.78

.74

Nov.

0.72

.71

.64

.63

.84

.74

.70

.66

.62

.72

.74

.71

.70

.70

.72

.64

.64 

.62

.68

Dec.

0.72

.72

.67

.62

.62

.67

.64

.62 

.61

.60

.57

.56

.58

.61

.60

.55

.62

.72

.62

.64

""."66

.61

.61

a Channel dry. 

Monthly discharge at station No. 36 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

Mean 

discharge 

in secondfeet.

<*0.03

«. 25

.01

.03

00

.48

.25

Run-off 

(total in 

acre-feet).

1.84

2.38

15.70

.60

1.80

20.20

28.60

15.10

Month.

1912 Continued.

July..........................

The year ...............

Mean 

discharge 

in secondfeet.

0.10

.36

.07

.03

.40

.37

.31

.25

Run-Off 

(total in 

acre-feet).

6.00

22.20

4 40

16.00

24.80

22.00

18.80

180.00

i Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

jecord at camp near station No. 50.

Discharge measurements at station No. 37 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.J

Date.

Aug. 16........... ............

Sept. 26................ ......

Oct. 25. ......................

Gage 

height.

Feet. 

0.34

.35An

Discharge.

Sec.-ft. 

0

0.01

Date.

Nov. 22......................

Dec. 12......................

height.

Feet. 

0.39

.31

Discharge.

Sec.-ft. 

0.02

0

NOTE. Bed of stream of sand and silt; shifting. One channel at all stages.
276 WATER RESOURCES OP HAWAII, 1912.

Daily gage height, in feet, at station No. 37- at 2,700-foot level, near Hilo, Hawaii, for 1512. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]

Day.

I...............

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

21...............

22...............

23............... 

24...............

25...............

26............... 

27............... 

28...............

29...............

30...............

31...............

Jan..

0.55

.52

.51

.52 

.55

.61

60

<H3

.56

.55

.54 

.52

.51 

.50

.48

.45

AK

.45 

45

""."56"

4O

.45

.44

'Feb.

(a)

(a)

(a)

(a)

ft(a)

0.50 

.48

.45 

.45

AK

.44

EK

.59

.......

.......

Mar.

O K7

.55

.53

""55"

K«

14

.58

.61

.66 

.65

.59

.58 

.61

.60

.59

.55

.59

.58

.56 

.54 

.51

.50

.53

.70

Apr.

0.61

.61

.61

.62

.62

.60

""."54"

.60

.58

.58

.60

.60

.64

.62

.60

.62

.65 

.63 

.60

May.

0.85

.79

.60

*;n

48

.45

.40 

""."38"

.30

June.

0.25

"(«)"

.35

.30

" "46"

.35

.......

.55

.58 

.61 

.55

July.

Or 62

.61

.59

.58

.55

.54

.58

.40

.38

.35

.35 

.49

.40 

.34 

.32

.44

Aug.

0.30

.75

.46

.44

""."39"

.37

.40

.38

.38

.40

.40 

.37

.41

.35

.34 

.35

.32

.30 

.39

Sept.

0.40

.40

.42

V)

.38

.32

.41

.31 

.32

.30 

.40

.39

.39

.39

.39

.40

.38 

.35

.35

.35 

.36

.36

.45

Oct.

0.43

.40

.38

.38

.38

.38

.38

.38

.41

.40 

.42

.40

.41

.50

""."42"

.39

.40

.41

Nov.

0.40

.39

""."36"

.37

.46

.41

.41 

.38

.36

.46

.41

.40

.40

.40

.40

.38 

.36

.40

Dec.

0.40

.39

.36

.35 

.35

.38

.37

.36

.34

.34

.34 

.34

.36

.40 

.34

.34

.39

.42

.37

......

.32

""."39 

.34

.34

a Channel dry.

Daily discharge, in second-feet, at station No. 37 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Nov.

(e)

(a)

0.05

.05

.05

.05

.05

.05

,05

.05

.05

.05

.05

.10

Dec.

0.05

.05

.05

.05

.05

.05

.05

.05

.10

.05

.10

.05

.10

.16

.45

Day.

16...............

17...............

18...............

19...............

20...............

21...............

99

23. ..............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

6.16

.05

.05

.05

Oc

0.

(a

(a

(*

(a

(a.

(" 

(a

(a

(a

fo

(«'

t.

05

05

05

05

)

05

Nov.

0.05

.05

.05

.10

.10

.10

.10

.10

.10

.10

.05

.05

.05

.05

.05

Dec.

0.12

.34

.34

.32

.12

.10

.05

.05

.05

.25

.20

.20

.18

.24

.20

.18

a Channel dry.
ISLAND OF HAW AH. 277

Daily discharge, in second-feet, at station No. 37 at 2,700-foot level, near Eilo, Hawaii,

for 1912.

Day.

1..... ..........

2...............

3............... 

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0-05 

.05

.05

1 05

.05

.10

.10

.10

.10

.05

.05

.05

.05

.05

Feb.

.......

0.05

.05

.10

Mar.

0.10 

.05

.05

.05

.10

.05

.10

.10

.15

.10

.10

.10

.10

.10

.10

.05

.10

.10

.05

.05

.05

.05

.05

.15

Apr.

0.10 

.10

.10

.10

.10

.10

.10

.05

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

May.

"61 25"

.20

.10

.05

June.

.......

0.05

.10

.10

.05

July.

0.10 

.10

.10

.10

.05

.05

.05

Aug.

0.15

Sept.

.......

Oct.

.......

Nov. Dec.

......

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 37 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

December. ...................

1912.

May

Mean 

discharge 

in secondfeet.

0.03

.06

.14

.05

.15

.08

.10

.07

Run-off 

(total in 

acre-feet).

2.00

3.48

8.65

3.07

8.63

4.92

5.95

4.30

Month.

1912 Continued.

July..........................

August. . .....................

September... . ................

Mean 

discharge 

in secondfeet.

0.03

.06

.06

.07 

.08

.08

.10

.08

Run-off 

(total in 

acre-feet).

1 7Q

3.69

3.69

4.17

4.92

4.76

6.15

55.90

Discharge measurements at station No. 38 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E.G. Christiansen, hydrographer.]

Date.

Sept. 26........ ...............

Oct. 25........... ............

4B.

Feet. 

0.87

.75

.81

Discharge.

8ec.-ft. 

0.15

.02

19

Date.

Nov.22..... ..................

Dec. 12. ......................

&.

Feet. 

0.82

.75

Discharge.

8ec.jt. 

0.10

.06

NOTE. Bed of stream is composed of sand, gravel, and some small cobbles; somewhat rough and probably only slightly shifting. One channel at all stages.
278 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 38 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]

Day.

1...... .........

2.. .............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.76

.74

.72

.75

.75

.76

.74

.72

.71

.70

.70

.69

.68

.68

.66

.66

.65

.65

.65

.64

.66

.65

.65

.64

Feb.

ft (°)

(a)

(a)

(0)

fa)

(a)

0.79

.70

.69

.66

.65

.64

.78

.80

Mar.

0.78

.75

.71

.75

.80

.80

.79

.89

.97

.99

.84

.80

1.04

1.05

.94 

.89

.91

.85

.79

.76

.74

.72

.93

1.27

Apr.

0.83

.85

.84

.86

.98

.89

.85

.79

.88

.82

.82

.83

.80

.95

.88

.80

.88

.86

.82,

.81

May.

1.05

.82

.71

.71

.73

.70

.70

.68

.59

June.

0.52

.50

.61

.59

.70

.68

.80

.80

.82

.79

July.

0.89

.84

.82

.80

.78

.77

.79

.80

.79

.78

.75

.80

.81

.82

.78

.80

Aug.

0.75

1.15

.89

.80

.80

.79

.80

.80

.78

.80

.82

.79

.82

"".~74~

.75

.75

.75

.74

.80

Sept.

0.82

.84

.87

.82

7Q

.78

.82

.79

.78

.76

.80

.79

.77

.75

.78 

.79

.76

.75

.71

.74

.72

.72

.85

-Oct.

0.80

.81

.77

.75

.74

.74

.76

.77

.80

.76

.82

.81

.81

.92

.86-

.80

.78

.86

Nov.

0.84

.81

.78

.79

.92

.84

.88

.82

.80

.90

.89

.84

.80 

.82

.87

.80

.80

.82

Dec.

0.84

.84

.81

.80

.80

.84

.81

.80

.78

.75

.74

.78

.79

.82

.77

.78

.82

.89

.81

.82

.84

.80

.80

o Channel dry.

Daily discharge, in second-feet, at station No. 38 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...............

3. ............ ..

4...............

5...............

6...............

7. ..............

8...............

9...............

10...............

11...............

12...............

13. ........... ...

14...............

15...............

Sept. Oct.

0.30

.30

.30

.35

.35

.30

.30

.30

.30

.30

.26

.26

.28

.28

.30

Nov.

0.05

.05

.05

.10

.30

.35

.40

.45

.50

.30

.35

.40

.45

.50

.55

Dec.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.05

.25

1.70

5.50

Day.

16...............

17...............

18...............

19...............

20...............

21...............

23...............

24...............

0(1

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

0.70

.80

.30

.30

Oct.

0.30

.30

.20

.12

.10

.09

" .09

.09

.09

.10

.10

.05

.05

.05

.05

.05

Nov.

0.30in

.30

.30

.30

in

in

.30

.30in

.10

.05

.05

.05

.05

Dec.

1.36

4.40

4.60

4.30

.80

.20

' .10

.05

.05 9 in

.94

.80

.87

2.50

2.00

1.50
ISLAND OP HAWAII. 279

Daily discharge, in second-feet, at station No. 88 at 2,700-foot level, near Hilo, Hawaii,

for 191%.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12............... 

13...............

14...............

15............... 

16...............

17...............

18............... 

19............... 

20...............

21............... 

22...............

23............... 

24............... 

25...............

26...............

27...............

28...............

29............... 

30...............

31...............

Jan.

0.10

.10

.10

.05

.05 

.10

.10

.10 

.05

.05

.05

.05 

.05

.05

.04 

.04

.04

.03 

.03 

.03

.02 

.02

.02 

.02 

.02

.03

.03

.02

.02 

.02

.02

Feb.

0.01

.01

.01

(a)

(a) 

°)

a)

a) 

a)

a)

*A

(°) 

.10

.05

.05 

.03

.02

.02 

.10 

.10

.30 

1.00

2.00 

1.00 

40

 .20

.30

.30

.40

.......

Mar.

0.20

.20

.10

.10

.05

.05

.10

.10 

.10

.10

.10

.30 

.65

.75

.20 

.10

1.10

1.80 

1.40 

1.15

.50 

.30

.35

.20 

.20

.10

.10

.05

.05 

.45

3.20

Apr.

1.50

.50

.15

.20

.20 

.20

2.00

1.50

1 net

.70

30

.20 

.20

.10

.25

.15

.50

.15 

.15

.10

.55 

.25

.10 

.20 

.25

.20

.15

.10

.10 

.10

May.

0.30

Kf\

.50

1.15

1.50 

.15

.10

.05 

.05

.05

.05

 .05 

.05

.05

.05 

.05

.10

.05 

.05 

05

.05 

.05

.05 

.20 

05

.05

.05

.05

.05 

.05

.05

June.

.......

0.05

.......

.......

""."io"

.10

.15

.10

.......

July.

0.10

.20

<sn

.20

.15

.10

.10

.10 

.10

.10

.50

.30 

.10

.30

.10 

.10

.10

.10 

.10 

.10

.10 

.10

.10 

.10 

.10

.10

.15

.10 .10' 

.10

.10

Aug.

0.10

.20

2 ftft

3ft

.10 

.10

.16

.10

.10

.10

.10

.10 

.10

.10

.15

.10

.10

.15 

.40 

.20

.10

05

.10 

.10 

.10

.05

.10

.30

.20 

.20

.20

Sept.

0.60

1 00

2 An

3.00

.15

.20

.25

.15 

.10

.10

.10

.15 

.10

.10

.10 

.10

.10

.10 

. .10 

.10

.10 

.10

.10 

.10 

.10

.05

.05

.05

.05 

.20

Oct.

0.10

.10

.10

.10

.10 

.05

.05

.05 

.10

.10

.10

.10 

.10

T;

.15 

.10

.80

.10 

.10

4t\

.40 

1.00

2.50 

.20 

.10

.10

3.50

1.00

1.00 

.80

.20

Nov.

0.20

.10

1.50

4t\

.10

.10

.10

.10

40

2 en

9 OA

.20

OK

.15

.10 

.30

1.00

.30 

.80 

.20

.10 

.15

.25 

.20 

.10

.10

.15

.50

.20 

.15

Dee.

1 00

2 00

.20

.20

.10 

.10

.10

.20 

.10

.10

MO

.10 

.05

.10

.10 

.15

.10

.10 

.15 

.30

.10 

1.00

3.00 

2.50 

.15

.30

.20

.10

.10 

.10

.10

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 38 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

0.20

.27

1.12

.05'

.22

46

.40

.18

Run-off 

(total in 

acre-feet).

12.50

69.10

3.07

12.70

no on

23.80

11.10

Month.

1912 Continued.

July..........................

ilean 

discharge

feet.

0.05

.14

.20

00

 .44

.42

.42

.28

Run-off 

(total in 

acre-feet).

2.98

8.61

12.30

19.00

27.10

25.00

25.80

200.00

Discharge measurements at station No. 39 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Oct. 25. ......................

Gage 

height.

Feet. 

0.82

.80

.99

Discharge.

Sec.-ft. 

0.20

.10

.53

Date.

Nov. 22......................

Dec. 12. ......................

Gage, 

height.

Feet. 

0.99

.90

Discharge.

Sec.-/*. 

0.83

.23

NOTE. Bed of stream is composed of sand, gravel, and some small cobbles; so'mewhat rough and probably shifting. One channel at all stages.
280 WATER EESOTJECES OP HAWAII, 1912.

Daily gage height, in feet, at station No. 39 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2. ..............

3............... 

4...............

5............... 

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15............... 

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27. ..............

28...............

29...............

30...............

31...............

Jan.

0.85 

.82

.81 

.84

.86

.91

.88

.85

84

.82

.81

.80

.79 

.78

.75

.75

.74

.72

.71

.71

.74

.72

.72

.71

Feb.

"6." 65"

.65

.62

.62

.61

.61

.60

.81

.78

.75 

.71

.70

.68

.81

.90

Mar.

0.83 

.81

.80

.80

.82

84

84

QO

.99

1 (V>

.93

so

1.01

.96

on

.85

.89

.88

.84

SA

.80

.79

.90

1.50

Apr.

0.84 

.88

.92 

.91

1.02

OS

.88

.91

.89

.90

.89

.89

1.01

07

.86

.98

.99

QO

.93

May.

"i.'is"

1.13

.99

.......

.95

.96

.90

.84

.80

.70

June.

.......

0.60

.55

.98

.91

.90

.89

.82

.70

.80

.72

July.

1.00 

.92

.90 

.89

.82

.80

.85

.89

.82

.82

.80

.99

.86

.85

.80

.80

Aug.

0.78

1.10

.98

.S3

.84

.79

.82

.80

.80

.83

.88 

.80

.89

.76

.75

.80

.75

.75

84

Sept.

0.93 

.90

.91

.87

.81

.79

.89

.84 .80*

.77 

.86

.83

.81

.80

.80

.84

.82

.81

.81

70

.79

.79

.92

Oct.

0.92

.93

""."89"

.85 

.82

.81

.86

.88

.89

.90

.95

.90

.91

1.06

1.10

.98

.98

.98

Nov.

1.02

.......

1.02

.90

.90

1.12

1.06

1.02

.95

.90 

1.12

1.09

1.01

1.00

.99

1.01

.93

.92

.91

1.00

Dec.

1.00 

1.08

1.00 

.97

.96

1.03

1.00

.94

.92

.90

.88

.89

.92 

1.00

.91

.90

.98

1.09

1.00

i.02

1.02

.92

.94

Daily discharge, in second-feet, at station No. 39 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1........ .......

2... ............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

1.00

1.00

1.00

1.00

1.09

.88

.70

.76

.88 1 00

.52

.52

KQ

64

64

Nov.

0.10

.10

.10

.26

40

.52

.64

.76

.88

46

.52

.64

.76

.88

1.00

Dec.

0.16

.10

.10

.13

99

.10

.10

.13

.22

.16

.25

.10

.52

3.00

6.08

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

rtQ

29...............

30

31...............

Sept.

1.45

1.72

1.00

1.00

Oct.

a ~o

.70

40

.25

QO

.16

.10

.10

.13

10

.16

.10

.10

.10

.10

.10

Nov.

0.46

.52

.58

.64

.70

.76

.82

.88 i fin

1 18

46

.37

34

.28

99

Dec.

1 54

5.20

5.30

A. OS

2.45

. LOO

4607

.16

A ^f>

3.55

3.88

o no

5.20

A. fiK

4.10
ISLAND OF HAWAII. 281

Daily discharge, in second-feet, at station No. 39 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.20

.20

.25

.15

.15

.20

.30i«,

.35

.25

.20

.15

.15

.10

.10

.10

.10

.10

.10

.10

.05

.05

.05

.05

.05

.10

05

05

.05

.05

.05

Feb.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.15

.10

.10

.05

05

.05

.15

.40

.80

2.00

3.00

3.00

1.00

.20

60

.60

.90

Mar.

0.40

.50

.20

.15

.10

.10

.10

.15

.15

.20

.20

.95

.95

1.20

.60

.35

1.10

1.70

2.00

.75

.40

.25

.35

.20

.35

.20

.10

.10

.10

.40

6.30

Apr.

2.00

.80

.20

.35

.50

.45

6.00

6.00

4.00

1.20

.90

.75

1.00

.35

.45

.35

30

.40

.35

.35

1.10

.80

.30

.40

.90

at;

.95

.60

.30

.70

May.

1.50

2.00

2.00

2.45

3.00

2.25

1.00

.30

.20

.20

.10

.05

.95

60

.70

.90

.70

.30

.75

.50

.30

.30

.40

.80

.20

.20

.10

.20

.40

.20

.05

June.

0.05

.05

.05

.05

.05

05

.05

.05

.05

nt;

.10

.20

.90

60

AK

.40

.40

.40

4fl

.35

.35

.30

.25

.20

.15

.05

.10

.05

. .05

.05

July.

0.20

Cfl

1 00

.50

,40

.35

.30

.15

.10

OK

9 fin

.80

.35

fifl

.15

.10

30

30

.10

.10

.15

.15

.10

QC

30

30

.25

.10

.10

.10

.10

Aug.

0.10

.10 i on

.90

.20

.20

.20

.10

.15

.10

.10

.10

.20

.20

.35

.10

.15

.35

.60

.20

.10

.10

.10

.10

.10

.10

.20

.60

.40

.20

.30

Sept.

1.00

1.50

4.00

6.00

.60

.40

.45

Qf\

.15

.10

.10

.35

.20

.10

.10

.30

.10

.20

.15

.10

.10

.20

.15

.15

.15

.15

.10

.10

.10

.50

Oct.

0.50

60

.50

.35

OK

.15

.10

.15

.15

..30

.35

.35

' .40

.70

80

.20

2.50

.40

.45

1.55

1.60

2.00

4.50

1.90

.90

.90

6.00

4.00

4.00

2.00

.90

Nov.

1.20

.CO

4. 00 

3.00

1.20

.50

.40

.40

2.10

5.00

4.00

1.55

1.20

.70

.40

2.10

4.00

1.80

3.50

1.10

1.00

.95

1.10

1.00

.60

.50

.45

1.00

1.00

1.00

Dec.

2.00

Q Kfi

1.00

1.70

1.00

.80

.75

1.25

1 00

.65

W\

.40

.35

.35

.50

1.00

.45

.40

.90

1.80

1.00

2.00

5.00

4.00

1.20

1.50

1.20

.50

.65

.20

.20

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 39 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

0.51

.57

1.99

.14

.47

.66

1.12

.76

Run-off 

(total in 

acre-feet).

31.40

34.30

122.00

8.61

27.00

40 60

66.60

46.70

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.21

.36

.28

60

1.27

1.58

1.22

.72

Run-off 

(total in 

acre-feet).

12.50

22.10

17.20

35.70

78.10

94.00

75.00

524.00

Discharge measurements at station No. 40 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16.... ...................

Oct.25. '.".".".".!"!""!"!!"!-

height.

Feet. 

1.09

1.05 

1.31

Discharge.

Sec.-ft. 

0

"""o.lo"

Date.

Nov.22... ....................

Dec. 12. ......................

height.

Feet. 

1.26

1.18

Discharge.

Sec.-ft. 

0.19

.10

NOTE. Bed of stream of gravel and small cobbles. Probably shifting. One channel at all stages.
282 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet; at station No. 40 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomln, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1...... .........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18........--.-..-

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.25

1.18

1.15

1.22

1.25

1.32

1.30

1.25

1.10

1.00

ss

.85

(a) w

(a)

(a)

(a)

(a)

(«>

(a)

(a)

F eb.

a)

a)

a)

a)

«}

a)

a)

a)

a)

a)

a)

a)

a )

a)

Mar.

1.16

1.13

1.12

1.12

1.11

1.14

1.11

1.31

1.51

1

0Q

1.20

1.44

1.38

1.34

1 19

1.30

1.27

1.18

1.16

1.12

1.83

Apr.

1.13

1.21

1.22

1.26

1.36

1 34

1 99

1.16

1.26

1.19

1.21

1 91

1.31

1.29

1 9S

1.28

1.29

1 94

May.

1.79

1.62

1.30

1.40

1.31

1.25

1.20

1.10

June.

(a)

(a)

1.20

1 11

1.19

1.18

1.10

1.02

1 IS

1.09

July.

1.34

1.29

1.22

1.20

1.20

1.18

1.12

1.25

1.18

L10

1.10

1.20

1.20

1.12

1.12

1.15

Aug.

L09

1.28

1.12

1.13

1.00

1.12

1.11

1.10

1.10

1.11

1.09

1.21

1.19

1.06

1.04

1.05

1.05

Sept.

1.38

1.33

1.30

1.31

1.25

1.20

1 14

1.19

1.15

1.10

1.09

1.15

1 12

1.12

1.11

1.12

1.15

1.10

1.08

1.05

1.00

1.26

Oct.

1.22

L14

1.04

1.21

1.24

1.35

1.30

1.20

1.26

1.52

Nov.

1.30

1.32

1.21

1.22

1.41

1.39

1.36

1.28

1.24

1.30

1.40

1.35

1.29

1.28

1.29

1.26

1.24

1.20

1.26

Dec.

1.32

1.40

L28

1.28

1.30

1.30

1.30

1.28

1.27

1.20

1.15

1.14

1.16

1.13

1.12

1.14

1.18

1.36

1.24

1.42

1.42

1.40

1.34

a Channel dry.

Daily discharge, in second-feet, at station No. 40 at %,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7.... ...........

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

0.7

6

.6

.7

.7

.5

.4

.4

.4

.4

.3

.3

.3

.2

.2

Nov.

00(aj

(a)

0.0

.1

.2

.3

.4

.5

.3

.3

.3

.3

.3

.3

Dec.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.3

.8

1.8

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

0.7

1.0

.7

.7

Oct.

0.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

(a)

(«)

(a)

Nov.

0.1

.1

.2

.2

.3

,3

.4

.5

.6

.7

.4

.2

.1

.1

.1

Dec.

0.2

1.0

1.1

1.0

1.3

.6

.2

.1

.1

1.2

.5

.5

.4

.7

.6

.5

a Channel dry.
ISLAND OP HAW AH. 283

Daily discharge, in second-feet, at station No. 40 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9. 

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

21...............

22...............

23............... 

24............... 

25...............

26............... 

27............... 

28............... 

29...............

30...............

31...............

J

(

ar

e

t

.(

.1

(

t

(

.

,

.

a

a.

a

a

I 

a 

a

0

ft

a

(i

.

*)

10

V)

0

10

0

*)

H)

SO 

V)

10 

0

0

0

0

10

Fe

('

c

c

(

I

I

1

I

'c 

c

I 

c

1

t

c

(c

(<

('

(e

( 

1

£ 

i

]

b.

i

i

i

i

i

i

i

i

i 

i

i 

i

i.

i

i

i

i

i

i

i

>.5 

.5

(.5 

(.0 

!.0

1.0 

.5 

.2 

.1

Mar.

0.10

.10

.10

.05

.05

.05

.05

.05

.05 

.05

.05

.90

1.20

.30

.10 

.90

.80

.70

.60

.50 

.10

.30 

.20 

.20

.10 

.10 

.05 

.05

.20

3.20

Apjr.

1.00

.50

.10

.10

.10

.20

2.50

2.00

1.50 

50

.50 

.10

.10

.10

.20

.10 

.10

.10

.10

.10

.30 

.30

.20 

.20 

.30

.30 

.20 

.20 

.10

.10

May.

1.00

1.50

2.00

2.90

3.30

1.80

.80

.50

.40 

30

.30 

30

.30

.30

.30

.30

.70

.70

.70

.40

.40 

.40

.30 

.30 

.20

.20 

.10 

.10 

.10

.10

.10

June.

.......

.......

0.10

""io"

.10

""io'

July.

0.20

.30

.50

.10

.10

.10

.10

.10 

.10

1.50 

1.00

.20

.80

.10

.10 

.10

.10

.10

.10

.10 

.10

.10 

.10 

.10

.10 

.10 

.05 

.05

.05

.05

Aug.

"o.'io"

.......

.......

.......

.......

Sept.

0.60

.60

2.00

3.50

.40

.30

.30

.20

.10 

.10

.10 

.10

.10

,10

.10

.05 

.05

.05

.05

.05

.05 

.05

.05 

.05 

.05

.05 

.05

.20

Oct.

0.10

.10

.10

.10

(«)

a

a

a

a' 

a

(°)

(a)

(a)

(a)

.10

.10 

.10

.10

.20

.50

.50 

1.50

3.00 

.30

.10

.20 

3.50 

2.00 

2.00

2.00

1.30

Nov.

0.30

.30

.40

.40

.40

.20

.10

.10

.70

.70

.70 

.70

.50

.30

.20

.30 

1.20

.70

.60

.50

.30 

.30

.30 

.20 

.20

.20 

.10 

.50 

.30

.20

Dec.

1.00

2.00

.40

.70

.30

.30

.30

.30

.30 

.30

.20 

.10

.05

.05

.10

.05 

.05

.05

.10

.50

.20 

2.00

3.50 

2.50 

.80

1.00 

.80 

.70 

.40

.20

.20

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 40 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

December ....................

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

0.26

.25

.45

.08

.4207

.41

.68

Run-off 

(total in 

acre-feet).

16.10

15.10

28.00

4.92

24.20

99 SJA

24. 40

41.80

Month.

1912 Continued.

July..........................

August. . .....................

September ................... 

October ......................

Mean

in secondfeet.

0.10

.22

.10

.31

.58

.40

.63

.33

Run-off 

(total in 

acre-feet).

5.95

13.50

6.15

18.40 

35.70

23.80

38.70

260.00

Discharge measurements at station -No. 41 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16.... ...................

Sept. 26... ....................

Oct. 25.. ....... ..............

heignt.

Feet. 

0.42

.20

.90

Discharge.

Sec.-ft. 

0.62

1.25

Date.

Nov.22.. .....................

heignt.

Feet. 

1.34

.25

Discharge.

Sec.-ft. 

2.33

.52

NOTE. Bed of stream of gravel, small cobbles, and some bowlders. The section is -rough, but probably 

permanent. One channel at all stages.
284 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and KuznetsofE, observers.]

Day.

1. ..............

2...............

3............... 

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.54 

.52

.52

.65

.72

.85

.78

.72

.65

.60

.55

.50

.35

.25

.15

08

-.05 -.10

-.25

-.35

(«

(0

(a

(a

Feb.

'"fa)"

(a)

(0)

(a)

(a)

(a)

(a)

0.51

.45

.10

.10

.15

.20

.79

1.33

Mar.

1.32 

1.22

1.13

1.05

1.18

1.11

1.33

1.74

1.84

1.84

1.52

1.39

1.55

1.69

1.54 

1.34

1.39

1.36

1.22

1.14

1.06

1.15

2.00

Apr.

1.32" 

1.36

1.52

1.54

1 Q4

1 70

1.61

1.51

1.54

1.44

1.51

1.51

1

AQ

1.70 

1.61

1.48

1.52

i fin

1.55

1 J.Q

May.

"i.'so"

1.60

1.02

.78

.78

.......

.71

.69

.68

.60

June.-

.......

0.59

.58

.69

.61

.80

.,77

1.12

1.01

1.29

1 10

July.

1.59 

1.44

1.40

1.35

1.28

1.20

.92

1.31

1.22

.70

.60

on

.59

.55

.42

.42

Aug.

0.22

.72 

.72

.49

.48

.40

.46

.50

4n

.56

.80

.44

.89

""."26"

.20

.29

.20

.12

.51

Sept.

1.52

1.30

1.25

1.24

.84

.78

.69

.80

.59

.49

.46

.64

.49

.40

.34

.34

.46

.34

.29

.19

.12

.08

.05

.7ft

Oct.

0.70

.59

~"".*42~

.32

.30

.29

34

.34

.79

.66

.63

.74

.82

1.46

1.49

on

.87

1.58

Nov.

1.46

.......

1.46

.89

.92

1.71

1.50

1.56

1.12

.82

1.69

1.55

i <m

1.31 

1.32

1.39

1.00

.95

.88

.99

Dec.

1.46 

1.50

1.31

1.23

1.39

1.26

1.14

.74

.39

.24

.20

.24

.45

1.00

.36

.27

.90

1.56

.75

1.10

1.05

.46

.60

a Channel dry.

Daily discharge, in second-feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

3.6

3.6

4.2

4.7

5.3

4.4

3.6

4.0

4.4

5.0

3.0

3.0

3.1

3.2

3.3

Nov.

0.3

.3

.3

.8

1.0

1.3

1 0

2.6

3.6

2.1

2.5

3.0

3.5

4.4

5.3

Dec.

0.8

.8

.5

.5

.5

.7

.6

.6

.8

.8

.8

.8

1.7

2.8

16.0

Day.

16...............

17...............

18...............

10

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

2.2

1.2

.9

1.9

8.2

- 8.2

9.8

11.6

5.9

7.4

3.6

3.6

Oct.

3.4

3.6

2.2

1.2

1.0

.8

.7

.7

.7

.7

.8

.5

.4

.4

.3

Nov.

2.5

2.8

3.1

3.4

3.9

4.4

5.0

^ fi

6.2

6.8

2.5

1.5

1.4

1.0

.8

Dec.

21.8

26.4

25.0

W n

5.0

2.8

2.3

1.4

18.0

11.0

10.0

9.1

12.0

12.4

10.0
Daily discharge, in second-feet, at station No. 41 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

ISLAND OF HAWAII. 285

1....

2....

3....

4.... 

5....

6....

7....

8....

9....

10....

11....

12....

13....

14....

15....

16....

17....

18....

19.... 

20....

21....

22.... 

23....

24....

25....

26....

27....

28....

29....

30....

31....

Day.

...........

...........

...........

-----------

Jan.

0.50 

.50

.55 

.50 

.50

.65

.70

.85

.80

.70

.65

.60

.55

.50

.40

.35

.35

.30

.30 

.30

.20

.15 

.05

.05

.05

05

(a)

(a)

Feb.

(a)

(a)

0.50

.45

.30

.30

.30

.30

.80 

2.40

5.00

10.00 

12.00

6.00

2.00

1.00

1.00

1.00

1.00

-------

Mar.

2.00 

2. SO

2.30 

1.70 

1.30

1.20

1.10

1.30

1.50

1.25

2.40

7.20

8.90

8.90

3.90

2.75

4.30

4.90

5.60 

6.35

4.20

2.45 

2.75

2.65

2.55

2.30

1.70

1.40

1.10

1.40

12.00

Apr.

5.00 

3.00

2.30 

2.55 

3.90

4.20

12.00

12.00

11.00

11.00

8.05

5.15

4.50

3.75

4.20

3.10

4.00

3.75

3.75 

3.50

6.50

5.15

1 4<i

3.70

3.90

5.00

4.30

3.50

3.00

4.00

May.

4.00 

5.00

6.00 

8.20 

10.00

5.00

4.50

4.00

3.50

3.00

2.50

2.00

1.05

1.00

.90

.85

.80

.80

.80 

.75

.70

.70 

6.65

2.00

.70

.70

.70

.80

.70

.60

.60

June.

.......

"o.'eo"

.60

.70

.60

.80

.80

1.30

1.00

2.15

1.55

.......

July.

1.00 

3.00

4.85 

3.10 

2.80

2.50

2.30

2.10

1.60

.90

7.00

4.00

2.25

2.00

1.70

1.60

1.40

1.30

1.10 

.90

.70

.70 

AH

.90

.-70

.60

.55

.40

.40

.30

.20

Aug.

0.30 

.50

.70 

.70 

.50

.50

.50

.40

.45

.50

.50

.40

.55

.60

.80

.40

.50

.90

2.00 

.50

.40

.30 

30

.30

.30

.30

.50

.40

.30

.30

.40

Sept.

2.00 

3.90

7.00 

12.00 

2.20

1.90

1.85

.85

.80

.80

.70

.80

.60

.50

.45

.65

.50

.50

.40

.40

.40

.45

.30

.30

.30

.30

.30

.25

.80

Oct.

0.70 

.60

.50 

.40 

.40

.40

.40

.40

.40

.40

.40

.80

.70

.60

.50

\70

1.50

.75

.80 

3.30

3.50

5.00 

10.00

3.50

.90

.90

12.00

10.00

8.00

6.00

4.70

Nov.

3.30

4.00

5.50 

4.00 

3.30

1.20

.90

.90

6.65

10.00

7.00

3.60

4.45

1.30

.80

6.35

10.00

4.30

6.00 

2.80

2.25

2.30

2.75

2.00

1.00

.90

.90

1.50

1.20

1.00

Dec.

8.00 

10.00

3.30 

3.60 

2.25

1.80

2.75

1.95

1.35

.70

.40

.30

.30

.30

.45

1.00

.40

.30

.90 

4.45

.70

5.00 

10.00

6.00

1.20

2.00

1.10

.45

.60

.50

.50

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly -well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 41 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Septei 

Octob 

Novel 

Decen

Janua: 

Febru 

March 

April.

Month.

1911.

1912. *v

Mean 

discharge 

in secondfeet.

5.38

2.46 

2.79 

7.71

.36 

1.53 

3.41 

. 5.11

Run-off 

(total in 

acre-feet).

151.00 

167.00 

475.00

22.10

88.00 

210.00 

304. 00

Month.

1912 Continued. 

May..........................

July..........................

Mean 

discharge 

in secondfeet.

2.56 

1.00 

1.72 

.52 

1.42 

2.55 

3.40 

2.34

2.16

Run-off 

(total in 

acre-feet).

157.00 

59.50 

106.00 

32.00 

84.50 

157.00 

202.00 

144.00

1,570.00

Disdarge measurements at station No. 42 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

{E. O. Christiansen, hydrographer.]

Aug.]

Sept. 

Oct. 2

NOT

Date.

6.......................

Gage 

height.

Feet. 

0.69

- .75

.75

Discharge.

See.-ft. 

0

0.04

Date.

Nov.22. ......................

height.

Feet. 

0.76 

.70

Discharge.

Sec.-ft. 

0.04 

0

E. Bed of stream of silt, sand, and gravel; shifting. One channel at all stages.
286 WATER .RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 42 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bflikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

2...............

3............... 

4............... 

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25................

26...............

27............... 

28...............

29...............

30...............

31...............

Jan

O.f

(a) 

(a)

O.f

,f

(a)

(a

(a1

( 

fa '

^

la\

fa]

(« !

a

(a

(a

£

(a

(a

.

>5

>6

18

n

'0

>5

Feb.

"If

(a)

(a)

(a)

(a)

(a)

0.60

.55

.55

(a)

(a)

0.62

.70

Mar.

0.69

.62 

.60

""."eo"

.66

.66

.69

.81

.91

.92

.77

.71

94

.91

.89

.78

.78

.70

.71

.68 

.62

.61

.85

1.39

Apr.

0.72

.78 

.78

.81

.84

.78

.79

.72

.80

79

.76

.80

.81

.86

79

.76

.83

.55

.80

7Q

May.

"i.'oe"

.80

.76

.68

.64

.60

.58

.55

.50

June.

"6."40"

""."38"

.51

.46

Kfl

.42

.74

.70

.77 

.71

July.

0.80 

.80 

.75

.75

.72

.70

.76

.74

.71

.70

.69

.74

.70

.70

.66

.70

Aug.

0.40

.94 

.80 

.70

"".n

.69

.72

.74

.70

.72

.73

.70

.74

.67

.70

.70

.70

.68

.72

Sept.

0.85

""."so"

.80

.88

.89

.84

.72

.72

.70

.70

.69

.71

.70

.68

.68

.69

.70

.68

.65

.63

.60 

.60

.60

.76

Oct.

0.76

.76 ""."TO"

.69

.66

.66

.69

.68

.78

.70

.74

.73

.76

.81

.87

.74

.80

.85

Nov.

0.79

""."77"

""."TO"

.71

.84

.82

.81

.74

.70

.85

.82

.79

.77

.75

.75

.72

.73

.72

.72

Dec.

0.79 

.80 

.72

.72 

.72

.74

.74

.72

.71

.70

.69

.70

.72

.73

.71

.72

.72

.77

.71

.76

.72 

.70

.72

a Channel dry.

Daily discharge, in second-feet, at station No. 42 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...............

2...............

3. ..............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.05

- .05

.05

.05

.05

Nov.

(°

(°

(a,

(a

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

De

(a

[a

(a

(a

("

(a

0

c.

01

01

01

.01

05

18

,70

Day.

16...............

17...............

18...............

19...............

20...............

21...............

99

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

0.10

.15

.10

.10

Oct.

0.05

.10

.05

.03

.01

.01

11 (°)

(«)

(«)

a

a

a -

a

(a

Nov.

0.05

.05

.05

.10

.10

.10

.10

.10

.10

.12

 .05

.05

.05

.03

.01

Dec.

0.20

60

.75

.65

.20

.10

.05

.05

.05

.40

.15

.15

.12

.30

«»A 'Hi

a Channel dry.
Daily

ISLAND OF HAWAII. 287

discharge, in second-feet, at station No. 42 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

1....

2....

3.... 

4....

5....

6....

8....

9....

10....

11....

12. ...

IS ...

14....

15....

16....

17....

IS. ...

19. ...

20....

21....

22....

23....

24....

25....

26....

27....

28....

29....

30....

31....

5ay. Jan.

0.05

.05 

.05

.05

.05

.05

Feb.

.......

.......

0.05

Mar.

0.05

.05

.05 

.05

.05

.05 

.05

.05

.05

.05

.05

.10

.20

.25

.10

.05

.30

.30

.20

.20

.20

.10

.10

.10

.05

.05

.05

.05

.10

1.35

Apr.

0.30

.10

.05 

.10

.10

.10 

.50

.40

.30

.15

.10

.10

.10

.05

.10

.05

.10

.10

.10

.10

.15

.10

.10

.10

.15

.10

.10

.10

.10

.10

May.

"6." 55'

.10

.10

.05

June.

0.05

.05

.10

.05

July.

. 0.05

.05

.10 

.10

.05

.05

.05

.05

.05

.10

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Aug.

0.05

.05

.30 

.10

.05

.05 

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.05

.10

.10

.10

.10

Sept.

0.10

.15

.50 

.70

.10

.10 

.20

 >n

.15

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

Oct.

0.10

.10

.10

.05

.10

.10 

.10

.10

.10

.10

.10

.10

.05

.05

.05

.10

.10

.05

.10

.10

.15

.30

.fiO

.15

.05

.10

1.40

1.00

.50

.20

.15

Nov.

0.10

.20

.50

OA

.10

.10

.05

.05

.15

.10

.10

.10

.10

.05

AC

.15

.10

.10

.10

.10

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

Dec.

0.30

.70

.10 

.10

.05

.05 

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.05

.50

1.00

.50

.10

.10

.05

.05

.05

.05

.05

Nof]S. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

;age h rights are missing estimated by means of rainfall; diagram prepared from rainfall record at camp 

(ear station No. 50.

Monthly discharge at station No. 42 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Octob<

Noven 

Decem

Februs 

March 

April.

May..

Disch

Aug. U 

Sept. S 

Oct. 2£

NOT:

Month.

1911.

1912.

try..... ................

Mean 

discharge 

in secondfeet.

0.05 

.05 

.16

.02 

.05 

.15 

.14 

.07

Run-off 

(total in 

acre-feet).

3.18 

3.20 

10.00

1.23 

2.88 

9.22 

8.33 

4.30

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.03 

.06 

.07 

.11 

.20 

.10 

.15

.10

Run-off 

(total in 

acre-feet).

1.79 

3.69 

4.30 

6.55 

12.30 

5.95 

9.22

69.80

rge measurements at station No. 43 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date. Gage 

height.

Feet, 

0.10 

.05 

.30

Discharge.

Sec.-ftr 

0.05 

0 

.10

Date.

Nov.22..... .................

height.

Feet. 

0.25 

.09

Discharge.

Sec.-ft. 

0.21 

.06

. Bed of stream of silt, sand, and gravel; shifting. One channel at all stages.
288 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 43 at 2,700-foot level, near Hilo, Hawaii, for 191$. 

[Bomin, Bilikov, Goorko, Belayeft, Selitonott, and Kuznetsoff, observers.]

Pay.

1.. .............

2... ............

3...............

4...............

5. ..............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16. ..............

17...............

18...............

19. ..............

20. ..............

21...............

22. ..............

23............... 

24. ..............

25. .............. 

26. ..............

27............... 

28...............

29...............

30...............

31...............

Jan.

0.25

.21

.21

.32

.32

.35

.32

.30

.28

.25

.24

.22

.21

.20

.10

.09

.08

.06

.06 

.06

.11 

.10

OS

.06

Feb.

0.04

.02

.02

.02

.01

.01

.02

.21

.17

.10

.08

.05

.02

.25

.33

.......

.......

.......

Mar.

0.14

.10

.09

.10

.14

.14

.15

.30

.35

.34

.21

.13

.37

.25,

.25

.16

.16

.16 

.15

.11 

.09

.06

.14

.41

Apr.

0.16

.20

.22

.29

.34

9<J

.21

.15

.21

.18

.21

.22

.24

.33

.28

.21

.31 

.26

.29 

.28

May.

0.50

.25

.21

.13

1S

.10

.00

+ .05

+ .15

June.

.00

+ .10

.21

.05

.10

.05

.......

.19 

.12

.20 

.11

July.

0.38

.24

.20

.11

.10

.01

.10

-.19

.01

.10

.10 

.19

.15

.12 

.10

Aug.

0.04

.45

.35

.15

.14

.10

.15

.16

.11

.18

.19

.10

.23

.02

.05 

.08

.02 

.02

.13

Sept.

0.40

.35

.30

.45

.37

.24

.12

.28

.20

.20

.10

.23

.18

.14

.11

".13

.1,5

.11

.OS

.05

.04

.02

.05

.28

Oct.

0.28

.24

.13

.10

.08

.06

.10

.10

.26

.14

.22

.19

.38

.60

"".'39'

.,27 

.38

.46

Nov.

0.30

.36

.23

.26

.50

.41

.41

.36

9Q

.58

.44

.37

.38

.31

.39

.20 

.20

. .19

.2$

Dec.

0.36

30

.20

.14

.18

.26

.22

.17

.12

.10

.05

.12

.14

.25

.11

.12

.IS

.42

.24

.27

.30 

.20

.22

Monthly discharge at station No. 43 at 2,700-foot level, near Hilo, Hawaii, for 1911-1

t

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

a. 0.20

a. 20

a. 40

.05

.03

.07

.12

.06

Run-off 

(total in 

acre-feet).

19 3fi

11.90

24.60

3.20

2.00

4 40

7.30

3.60

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.01

.05

.04

11

.23

.23

.26

.11

Run-off 

(total in 

acre-feet).

0.60

3.20

2.60

7

f«f|

13.90

13.50

16.10

78.10

a- Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50.

Discharge measurements at station No. 44 at 2,700-foot level, near Hilo, Hawaii, in 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16. ......................

Oct. 28.. .....................

Gage 

height.

Feet. 

0.51

.52

.55

Discharge.

Sec.-ft. 

0

0.05

Date.

Nov. 22........ ...............

Dec. 12. ......................

Gage 

height.

Feet. 

0.55

.11

Discharge.

Sec,-ft. 

0.05

0

NOIE. Bed of stream of silt, sand, and gravel; shifting. One channel at all stages.
Daily yage height, infect, at station No. 44 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

ISLAND OF HAWAII. 289

DJ

1......

2......

3......

4......

5...... 

6......

7......

8......

9......

10...... 

11.......

12......

14......

15......

16...... 

17......

18

1Q

20......

21...... 

22....... 

23....... 

24......

25...... 

26......

27...... 

28......

29......

30......

31......

Month

October 

Novemb 

Decembi

January 

Februar

April...

May....

y.

........

........

........

Jan.

0.45

.42

.42 

.46

.48

.51

.50

.48 

.45

.48 

.45

.44

.44

.44

.44

.42

.42 

.42 

.42 

.42

.45

.44

.42

.41

Feb.

0.41

.41

.40

.40

.38 

.38

.40 

.48

.40

.37

.41 

.39

.38

.41

.45

.......

Mar.

0.50

.50

.50

.50

.50

.50 

.50

.57 

. .60

.60

.54

.53

.59

.58

.54 

.51 

.56

.54 

.54

.52 

.52

.51

.55

.62

Apr.

0.52

.53

.56 

.55

.59 

.54

.55

.55

.55 

.54

.54

.55

.55

.57 

.56 

.55

.56

.58

.56

.52

May.

0.75

.61

.......

""."59"

""."55"

.56

""si"

.51

.50

.43

June.

0.39

.31

.......

""."48"

.45

""."ie"

.40

.55 

.54

.55 

.54

July.

0.58

.55

.54 

.52

.52

.52

.54

""."si"

.52

.52

15

15

.55

.52

.52

Aug.

0.52

.62

.58

.52

.54

.52

.52

.54

.52 

.53

.53 

.53

.53

""."54"

.52 

.54

.52 

.54

.52

Sept.

0.56

.55 

.54

.58

.53 

.52

.52

.54

.52 

.52 

.51

.53

.53

.55

.52

.52 

.54 

.52 

.52

.53

.54 

.54

.54

.55

Oct.

0.55

.54

54

.52 

.52

.52

.54 

.52

.55 

.55

.55

.55 

.55

.59

.55 

.58

.58

Nov.

05S

.55

.55 

.55 

.58

.55 

.55 

.55 

.55

.56

.58

.55

.56 

.56 

.56

.55 

55

.55

.55

Dec.

0.22 

.34 

.12

,12 

.35 

.42 

.40 

.31

.16 

.08 

.08 

.40 

.42

.45 

.31 

.39 

.43 

.43

.42

.42

.42 

.25 

.23

ly discharge at station No. 44 at 2,700-foot level, near Hilo, Hawaii, for 1911-1%.

Month. j

1911.

ir...............----.

1912.

Mean 

iischargi 

n second

feet.

o0.03 

o.03 

o.05

.01 

.03 

.05 

.06 

.07

} Run-off 

(total in 

" acre-feet).

1.84

1.78 

3.08

.60 

2.00 

3.00 

3.60 

4.00

Month.

1912 Continued.

July...---- ---------- -----

August 

Septem 

October 

Novem 

Deceml

T

(er.j...--. -.- ------

he year

Mean 

discharge 

in secondfeet.

0.02 

.02 

.03 

.04 

.06 

.05 

.05

.04

Run-off 

(total in 

acre-feet).

1.00 

1.40 

1.60 

2.60 

5.00 

3.00 

3.00

30.80

a Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rain* 

fall record at camp near station No. 50.

Daily gage height, in feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii,for 191%. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16............ .............

Oct. 25. ........ ................

Gage

height.

Peet. 

0.79

.69

.78

Discharge.

Sec.-ft. 

0.05

.00

.14

Date.

Nov.22.................:......

height.

Feet. 

0.80

.74

Discharge.

Sec.-ft. 

0.18

.06

NOTE. Bed of stream of sand, gravel and some small cobbles in bed rock. Station probably permanent. 

One channel at all stages.

14694° WSP 336 14 19
290 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 45 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[Bomin, Bilikov, Goorko, Belay efl, Selitonott, and Kuznetsoff, observers.]

Day.

2.. .............

3...............

4...............

5...............

6...............

7...............

8...............

g

10...............

11...............

12...............

13............... 

14...............

15............... 

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23............... 

24...............

25...............

26............... 

27............... 

28...............

29

30...............

31...............

Jan.

0.75

.72

.71

.74

.75

.81

.82

.80

.75

.71

.70 

.68

.62 

.58

.......

Feb.

0.78 

.73

.70

.68

.65

.61

.80

.89

Mar.

0.75

.73

.71

.65

.71

.71

.78

.86

.96 

on

.81

.78

.93

.91

.81

.77

.88

.78

.76 

.74 

.71

.70

.86

1.14

Apr.

n 79

.81

.81

84

.88

.88

.84 ""si"

.82 

.82

.82

.82

.81

.89

.85

.81

.84

.82 

.81 

.79

May.

1.08

.99

.81

.......

.75

.74

.70

.63

""."ei"

eo

June.

0.48

.44

.58

.49

.60

.58

.......

.80

.79 

.80 

.79

July.

0.86

.84

.82

.80

.80

.79

.78

.81

.79

.76

.75 

.81

.84 

.81 

.80

.80

Aug.

0.74

1.20

.85

.80

.80

.79

.81

.80

.79

.82

.82 

.79

.86

7S

.75 

.76

.75

.74 

.81

Sept.

0.90

.88

.88

.92

.80

.79

.80

.84

.80 

.79

.79

.84

.79

.77

.76

.79

.76

.74

.70

.68 

.66

.66

.87

Oct.

0.84

.82

.74

.72

.72

.73

.72

.72

.79

.75 

.82

.79

.83

.92

""9i"

.79

.80

.92

Nov.

0.87

.81

.76

.75

.94

.85

.84 

.80

.75 

.94

.85

.81

.82

.82

.84

.81

 75

.78

.79

Dec.

0.84

.85

.80

.78

.79

.86

.81

.78

.76

.74

.73 

.74

.76 

.81

.74

.75

.80

.94

.81

......

.81

"".'si

.78

.80

Daily discharge, in second-feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ..............

2. ..............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

0.4

.4

.4

.4

.4

.4

.3

.3

.4

.4

.2

.3

.3

.3

.4

Nov.

0.1

.1

.1

.1

.2

.2

.4

.2

.2

.3

.3

.4

.5

Dec.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.3

.6

1.4

Day.

16...............

17...............

18...............

19...............

20...............

21...............

99

2J. ...... ........

24...............

25...............

26...............

27...............

28...............

29

30...............

31 ...............

Sept.

0.2

.1

.1

.2

.5

.5

.6

.7

.5

.5

.4

.4

Oct.

0.4

.4

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

Nov.

0.3

.3

.3

.4

.4

.4

.4

.5

.5

.2

.1

.1

.1

.1

Dec.

0.2

1.0

1.4

1.2

.7

.2

.1

.1

.1

1.0

.7

.8

.6

1.0

.8

.6
ISLAND OF HAW AH. 291

Daily discharge, in second-feet, at station No. 45 at 2,700-foot level, near Hilo, Hawaii,

for 191%.

Day.

1...... .........

2...............

3............... 

4...............

5...............

6...............

7............... 

8...............

9............... 

10...............

U.... ...........

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

yi... ............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.10

.10

.10 

.05

.05

.10

.10 

.20 

.30 

.20

.10

.05

.02

.01

.01

.01

/o\

(a

(a

(a

(a

(<*)

(<*)

Feb.

(a)

'W

"(«)"

(«)

0.20

.10

.05

.02 

.01

.01

.20

.50 

1.00

1.50

1.80

1.20

.80

.40

.60

.50

.60

Mar.

0.30

.30

.10 

.10

.05

.05

.05 

.10 

.10 

.15

.20

.40

.70

.80

.20

.20 

.60

.90

.70

.60 

.20

.10

.40

.30

.20

.10

.10

.05

.05

.40

1.50

Apr.

1.00

.60

.20 

.20

. 20

.30

1.60 

1.20 

.90 

.40

.40

.30

.30

.20

.30

.30 

.60

.30

.30

.20 

.60

.40

.20

.30

.30

.30

.20

.20

.10

.20

May.

0.90

1.10

1.00 

1.20

1.60

.80

.20 

.20 

.20 

.20

.20

.20

.20

.20

.20

.20 

.10

.10

.10

.10 

.10

.10

.10

.60

.02

.01

.01

.01

.04

.02

.02

June.

.......

.......

0.20

.20

.20

.20

July.

0.10

.30

.40 

.30

.30

.20

.20 

.20 

.20 

.20

.80

.40

.20

.40

.20

.10 

.20

.20

.10

.10 

.10

.10

.10

.20

.30

.30

.20

.20

.20

.20

.10

Aug.

0.10

.10

1.80 

.40

.20

.20

.20 

.20 

.20 

.20

.20

.20

.30

.30

.30

.20 

.30

.40

.60

.20 

.10

.10

.10

.10

.10

.10

.20

.30

.20

.20

.10

Sept.

0.30

.60

.90 

1.60

.40

.40

.60 

.20 

.20 

.20

.20

.30

.20

.20

.20

.30 

.20

.20

.10

.10 

.20

.20

.10

.10

.05

.02

.02

.02

.02

.40

Oct.

0.30

.30

.20 

.10

.10

.05

,05 

.05 

.10 

.10

.10

.20

.10

.30

.30

.10 

.80

.20

.30

.60 

.70

on

1.30

.50

.20

.20

1.80

1.00

1.00

.80

.60

Nov.

0.40

.20

.80 

.30

.20

.10

.10 

.10 

.60 

1.50

.90

.40

.30

.20

.10

.60 

1.00

.40

.80

.20 

.30

.30

.30

.30

.20

.10

.20

.50

.30

.20

Dec.

0.60

.90

.30 

.40

.20

.20

.20 

.40 

.20 

.20

.10

.10

.10

.10

.10

.20 

.10

.10

.20

.60 

.20

on

1.60

1.00

.20

.30

.20

.20

.20

.10

.10

 Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 60.

Monthly discharge at station No. 45 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

September 19-29..............

December ....................

1912.

January . »

April........ .................

Mean 

discharge 

in secondfeet.

0.40

.25

.24

.45

.05

.32

QO

.41

Run-off 

(total in 

acre-feet).

15.10

14.10

27.80

3.07

18.40 10 7n

24.40

Month.

1912 Continued. 

May..........................

July..........................

August .......................

The year. ..............

Mean 

discharge 

in secondfeet.

0.32

.01

.23

.26

.28 

.43

.40

.33

.28

Run-off 

(total in 

acre-feet).

19.70

.60

14.10

16.00

16.70 

26.40

23.80

20.30

203.00

Discharge measurements at station No. 46 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16........................

Sept. 26. .....................

hft jgn t-»

Feet. 

1.47

1.24

Discharge.

See.-ft. 

3.49

.86

Date.

Nov.28... ....................

Dec. 10. ......................

Gage 

height.

Feet. 

1.76

1.76

Discharge.

8ec.-ft. 

12.0

11.4

NOTE. Bed of stream of cobbles and some large bowlders; section near gage quite rough; probably 

permanent. One channel at all stages.
292 WATEE EESOUKCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 46 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

5...............

6...............

7...............

8...............

9...............

10...............

12...............

13...............

14...............

15...............

16............... 

17...........---.

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29............... 

30...............

31...............

Jan.

1.60

1.42

1.35

1.42

1.42

1.48

1.45 

1.41

1.35

1.30

1.28

1.25

1.20

1.18

1.08

1.05

1.02

.98

.95

.95

.92

.90

.85 

.82

Feb.

0.55

.55

.51

.51 

.50

.50

.50

1.38

1.13

1.06

.91

.85

.80

.90

1.55

.......

Mar.

1.67

1.55

1 4Q

1.41

1.50 

1.51

1 60

2.21

2.41

2.55

2.09

1.84 

2.15

2.20

2.00

1.71

1.76

1.48

1.41

1.36 

1.51

2.61

Apr.

1.82

1.98

2.00

2.01

3.24 

2.42

2.31

2.02

1.76

1.84 

1.76

1 Q9

1 91

i on

2.12

2.05

1.86

2.25

2.15

2.08

May.

2.45

2.00

.......

1.75

"i."45"

1.46

1.38

1.35

1.30

1.20

June.

1.00

.95

.......

1.31

1.22 

"i.~35"

1.30

1.59

1.45

1.55

1.48

July.

2.09

1.89

1.82

1.74

1.62

1.52 

1.49

1.79

1.56

1.41

1.40

1.70

1.44

1.46

1.44

1.39

Aug.

1.25

2.35

2.02

1.54

1.40

1.39

1.40 

1.40

1.38

1.48

1.65

1.48

1.67

1.29

1.25

1.50

1.37

1.20

1.68

.......

Sept.

2.42

2.30

2.05

2.11

1.94

1.82

1.65

2.02

1.71

1.64

1.54 

1.65

1.51

1.42

1.39

1.39

1.39

1.36

1.27

1.22

1.19

1.17

1.15 

1.62

Oct.

1.61

1.55

1.44

1.34

1.28

123 "i.'si"

1.34

1.92

1.74

1.74

"i'ss"

1.84

2.06

2.49

2.78

3.22

2.40

1.98

1.96

4.12

2.98

3.10

2.26

Nov.

2.24

3.60

2.11

1.70

1.72

2.35 

4.72

3.00

2.26

2.30

1.92

1.78

2.16 

3.20

2.19

3.00

2.08

1.96

1.90

1.94

1.80

1.72

1.64

1.75 "i.'es"

Dec.

2.96

3.40

2.06

1.96

1.80

1.74

1.90

2.13

1.91 

1.75

1.65

1.59

1.52

1.53

1.62

1.82 

1.64

1.54

1.76

2.36

1.84

2.65

5.50

4.20

2.20

2.80

2.20

1.90

1.80

Daily discharge, in second-feet, at station No. 46 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

33.2

36.0

40.8

45.8

51.2

38.4

27.8

26.0

24.8

23.0

15.5

16.0

16.5

17.0

17.5

Nov.

0.8

.8

.8

2.4

6.0

10.2

16.5

23.0

31.8

12.2

19.0

26.6

48.5

63.0

Dec.

2.9

3.4

1.5

2.4

2.3

1.5

1.7

4.4

3.2

4.0

2.7

29.0

48.5

138.0

Day.

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Sept.

15.5

11.4

8.1

9.8

68.5

74.0

58.0

55.0

44.9

38.5

29.0

31.1

Oct.

18.0

18.0

10.2

5.2

4.4

3.7

3.0

2.9

2.7

2.4

2.2

1.3

1.1

.9

.8

.9

Nov.

14.0

23.0

63.0

107.0

151.0

199.0-

188.0

192.0

165.0

47.6

18.0

9.8

6.6

3.7

2.4

Dec.

90.5

140.0

153.0

105.0

90.5

40.0

20.5

13.0

11.0

40.0

23.0

22.0

18.0

30.4

23.0

18.0
ISLAND OF HAWAII. 293

Daily discharge, in second-feet, at station No. 46 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2............... 

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19............... 

20...............

21...............

22...............

23...............

24...............

25

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

6.00

6.00 

6.00

2.70

1.80

2.70

2.70

3.70

3.20

2.60

1.80

1.30

1.20

1.00

.70

.60

.50

.40

.30 

.20

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

Feb.

0.10

.10 

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

2.20

.40

.20

.10

.10

.10

.10 

5.00

100.00

300.00

400.00

300.00

100.00

50.00

10.00

10.00

10.00

Mar.

10.00

10.00 

8.10

5.00

3.90

3.20

2.60

3.30

4.00

4.20

6.00

37.00

53.00

64.00

28.00

13.00

32.00

40.00

38.00 

36.00

23.00

9.40

11.00

9.00

6.60

5.20

3.70

2.60

2.00

4.20

74.00

Apr.

30.00

20.00 

14.00

22.00

23.00

24.00

250.00

200.00

144.00

55.00

45.00

24.00

18.00

11.00

13.00

11.00

30.00

19.00

18.00 

18.00

30.00

26.00

16.00

40.00

30.00

40.00

32.00

28.00

20.00

40.00

May.

45.00

50.00 

50.00

58.00

65.00

23.00

20.00

17.00

17.00

14.00

14.00

11.00

11.00

10.00

10.00

6.60

3.30

3.40 

3.10

2.80

2.50

2.20

2.00

1.80

1.60

1.30

1.20

1.00

.80

.70

June.

.......

1.40

.80

1.80

.......

1.30

5.80

3.20

5.00

3.70

July.

10.00

18.00 

28.00

18.00

14.00

11.00

8.80

6.60

4.40

3.90

35.00

20.00

13.00

15.00

5.20

5.00

5.00

4.00

4.00 

3.00

2.60

2.50

2.40

9.00

6.00

3.00

3.40

3.00

2.30

2.00

1.50

Aug.

1.00

5.00 

48.00

24.00

4.80

3.60

2.40

2.30

2.40

2.40

2.30

2.20

3.70

5.00

7.50

3.70

3.00

8.10

10.00 

5.00

3.00

1.20

1.00

4.00

2.10

.70

8.40

7.00

6.00

£.00

4.00

Sept.

25.00

55.00 

85.00

120.00

44.00

26.00

30.00

20.00

14.00

11.20

7.50

24.00

9.40

7.20

4.80

7.50

5.00

4.20

2.70 

2.30

2.30

2.30

2.00

1.10

1.00

.80

.70

.60

.50

6.60

Oct.

6.30

5.00 

4.00

3.00

1.70

1.20

1,00

.90

1.00

1.70

1.70

19.00

11.00

11.00

11.00

10.00

105.00

15.00

27.00 

62.00

70.00

94.00

142.00

53.00

22.00

21.00

277.00

115.00

129.00

80.00

41.00

Nov.

39.20

40.00 

187.00

40.00

30.00

10.00

9.00

9.80

48.00

332.00

118.00

41.00

44.00

19.00

12.00

33.20

140.00

35.00

118.00 

28.00

21.00

18.00

20.00

16.50

13.00

9.80

7.20

11.00

9.00

7.50

Dec.

114.00

163.00 

27.00

21.00

13.00

11.00

18.00

31.00

18.00

11.00

7.50

 5.80

4.40

4.60

6.60

14.00

7.20

4.80

11.00 

49.00

15.00

80.00

432.00

264.00

36.00

96,00

36.00

18.00

13.00

10.00

10.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of .daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 46 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

September 19-29.. ............

December. ...................

1912.

Mean

in secondfeet.

37.00 

16.40

49.60

35.00

1.50

44.40 1*7 fin

43.00

Run-off 

(total in 

acre-feet).

~""i,"626

2,960

2,160

92.20

2,550.00

I

fiQft nA

2,560.00

Month.

1912 Continued. 

May..........................

July..........................

August. ......................

September . ..................

Mean 

discharge 

in secondfeet.

14.60 

2.00

8.70

6.09

17.40 

43.30

48.90

50.10

OA %fl

Run-off 

(total in 

acre-feet).

898.00 

119.00

635.00

374.00

1,040.OO 

2,660.00

2,910.00

3,080.00

17 QOfl Oft

Discharge measurements at station No. 47 at 2,100-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 16......................

Sept. 26......................

Oct. 25.. ....................

height.

Feet. 

1.64

1.10

O t\A

Discharge.

Sec.-ft. 

2.11

.65

C Qfi

Date.

Nov.19... ....................

T>ftn 1O

 *,

Feet.

O AK

2.21

Discharge.

Sec.-ft.

' 7.85

4.48

NOTE. Bed of stream of cobbles and some large bowlders. Section near gage quite rough. Station 

probably permanent. One channel at all stages.
294 WATEE RESOURCES OP HAWAII, 1912.

Daily gage height, infect, at station No. 47 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.}

Day.

1... ............

2...............

3............... 

4...............

5............... 

6...............

7...............

8... ...........

9............... 

10...............

11............... 

12...............

13............... 

14...............

15...............

16............... 

17...............

18...............

19............... 

20...............

21...............

22...............

23............... 

24...............

25...............

26............... 

27...............

28...............

29...............

30

31...............

Jan.

1.52 

1.28

1.25 

1.25

1.28

1.35

1.34 

1.30

1.22 

1.15

1.08 

1.00

.88

.82

.75 

.68

.62

.58

.55 

.55

"".'52'

.50

.48

.45

Feb.

.......

.......

1.25 

1.11

.70

.48 

.35

.28

1.41 

2.21

.......

.......

Mar.

2.17 

1.91

1.62

1.48

2.01 

2.01

2.14 

2.60

2.76 

2.79

2.45

2.26 

2 60

"~2."54" 

2 39

2.19

2.21

2.14

2.06 

1.81

1.59

1.42

1.89

3.16

Apr.

2.16 

2 36

2.42 

2.55

3.16

2 A8

2.59 

2.45

"2."25"

*> J&

2.32

2.39

2.42 

2.39

2.51

2.48

2.32

2.45

2.55 

2.45

2.25

May.

"2."55"

2.10

.......

1.70

"i."52~

1.58

1.50

1.40

"i'.iss

1.30

June.

.......

1.00

.90

.......

1.20

1.10

"i."27*

1.20

.......

1.85

1.70 

1.90

1.62

July.

2.55 

2.34

2.22 

2.16

1.94

1.71 

1.54

2.08

1.70

1.39

1.31 

2.06

1.65 

1.69

1.56

1.51

Aug.

1.07

2.92 

2.37

1.72

1.60

1.47

1.65 

1.65

1.49

1.76

2.10

1.69

2.04

1.19

1.16 

1.28

1.24

1.14 

1.71

Sept.

2.55

2.50 

2.34

2.55

2.55

2.12

1.92 

2.32

2.06 

1.90

1.78

2.06

1.76

1.59 

1.49

1.51

1.54

1.35 

1.26

1.07 

.99

.91

.89

.22

Oct.

1.81

1.71

"i."52"

1.32 

1.24

1.22 ~"i."3o"

1.27 

1.88

1.54 

1.82

2.85

2.05

2.32 

2.78

2.78

3.10 

2.58

2.25

2.30 

3.75

2.90

2.92

2.66

Nov.

2.55

3.50

2.40

2.16

2.15

2.75 

3.65

3.10 

2.56

2.50 

2.35

2.18

2.51 

3.10

2.60

2.95 

2.44

2.37

2.34

2.45

2.18

2.11 

2.10

2.30

2 14

Dec.

3.05

3.55

2.48 

2.46

2.30 

2.22

2.30

2 A7

2.36

2

OA

1.96 

1.92

1.76 

1.89

2.06

2.30 

2.04

1.91

2.31 

2.72

2.30

2.74

3.32 

3.00

2.47

2.92 

2.46

2.30

2.32

Daily discharge, in second-feet, at station No. 47 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1......... ......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

9.20

9.20

10.30

11.40

12.60

11.00

9.56

9.78

9.92

10.10

7.30

7.60

7

QO

8.24

8.56

Nov.

0.47

.47

.47

1.40

3.10

4.10

5.50

7.15

9 20

5.14

6.25

7.60

o on

11.00

13.00

Dec.

1.52

1.30

1 M

1.00

1 99

1.04

.88

.97

1.64

1.50

1 44.

1.30

10 AA

21.00

34.00

Day.

16...............

17...............

1ft

19...............

20...............

21...............

99

91

24...............

25...............

26...............

27...............

9ft

29

QA

31

Sept.

6.85

5.50

4.40

5.50

16.00

14.50

13.00

9.56

11.00

14.50

10.10

10.10

Oct.

8.72

8.88

5.14

2.86

2.14

1.72

1.42

1.32

1.20

LOS

.97

.82

.70

.58

.50

.47

Nov.

4.90

8.72

14.20

21.20

27.60

35.50

31.00

34.60

27.00

12.00

6.10

4.10

3.26

2.30

1.76

Dec.

16.00

26.00

32.50

20.40

18.00

9.20

6.10 A on

3.10

9.20

3.90

3.74

2.80

5.50

4.90

3.90
ISLAND OP HAWAII. 295

Daily discharge^ in second-feet, at station No. 47 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1... ............

2... ............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19. ..............

20...............

21...............

22................

23...............

24. ..............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.50

1.50

1.80

.95

.90

.90

.95

1.10

1.10

1.10

.90

.75

.65

.55

' .45

.35

.30

.30

.30

.30

.25

.25

.20

.20

.20

.20

.20

.20

.20

.15

.15

Feb..

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

on

.70

.30

.20

.10

.10

1.20

5.00

20.00

35.00

43.00

20.00

10.00

5.00

5.00

5.00

Mar.

5.00

5.00

4.60

2.50

1.65

1.50

1.35

2.30

3.20

3.20

4.30

11.00

15.00

15.50

ft Af\

5.60

11.00

10.50

10.00

9.90

6.25

4.80

5.00

4 60

4.30

3.60

2.15

1.60

1.25

2

AK

e\A of\

Apr.

15.00

10.00

4.50

7.00

7.90

10.10

35.00

30.00

24.80

12.60

10.75

8.40

7 00

5.50

8.10

6.40

7.00

7.45

7 90

7.45

9.40

8.90

6.40

7 40

8.40

10.10

8.40

5.50

6.00

6.00

May.

6.00

6.00

7.00

10.10

6.00

3.90

3.00

2.00

2 nn

2.00

2.00

2.00

1.80

1.70

1.60

1.50

1.45

1.50

1.55

1.50

1.50

1.50

1.40

1.30

1.20

1.20

1.15

1.10

1.10

1.10

1 00

June.

0.80

.60

.60

.60

.55

.50

.45

.50

.50

.60

.70

.70

.85

.80

.70

.80

95

90

on

on

.85

1 00

1.50

2 ftfl

2.30

1.80

2.50

1.65

1.50

1.50

July.

2.00

5.00

10.10

6.70

5.15

4.50

3.60

2.75

1.85

1.50

20.00

10.00

3.75

5.00

1.80

1.50

1.50

i in

1.50

1.50

1.20

1.10

1.00

3.60

2.60

1.70

1.80

1.50

1.40

1 00

1 00

Aug.

0.65

1.00

18.60

6.20

1.85

1.70

1.60

1.35

1.70

1.70

1.60

1.40

2.00

3.00

3.90

1.80

2 fifl

3

A(\

6.00

2.00

1.00

.85

.65

.95

.90

.75

1.85

1.50

1.20

1 00

1.50

Sept.

s.eo

10.10

35.00

35.00

9.20

6.70

10.10

10.10

4.10

3.40

2.60

6.40

3.60

2.50

2.05

3.60

2.80

2 00

1.60

1.40

1.40

1.50

1.10

.95

.80

.65

.55

.45

.45

.05

Oct.

2.15

1.85

1.65

1.45

1.40

.90

.90

.90

.90

1.00

.95

1.40

1.50

2.15

2.00

2.00

17.00

3.50

6.40

15.40

15.40

15.40

23.00

10.70

5.50

6.10

41.50

18.00

. 18. 50

16.00

19 9A

Nov.

10.10

20.00

34.00

10.00

7.60

5.00

4.50

4.40

14.50

38.50

23.00

10.30

9.20

6.85

4.70

9.40

23.00

11.00

19.50

8.25

7.15

6.70

8.40

6.60

4.70

4.00

3.90

6.10

5.20

4.30

Dec.

22.00

35.50

8.70

8.55

6.10

5.15

6.10

8.70

7.00

4.90

2.85

2.60

2.00

2.45

3.60

6.10

3.40

2.55

6.25

13.60

6.10

14.20

28.60

21.00

8.79

18.60

8.55

6.10

6.40

5.00

5.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 47 at 2,700-foot level, near Hilo} Hawaii, for 1911-12.

Month.

1911. 

September 19-29. .............

October ........................

December. ...................

1912.

January

February. ....................

April.........................

Mean 

discharge 

in secondfeet.

10.10

5..S5

10.60

8.16

.61

6.30

4 97

10.30

Run-off 

(total in 

acre-feet).

361.00

634.00

503.00

37.50

362.00

613.00

Month.

1912 Continued. 

May.................'.........

July..........................

August .......................

September... ... ..............

Mean 

discharge 

in secondfeet.

2.52

1.02

3.52

2.46

5.60 

7.99

11.00

9.24

5.38

Run-off 

(total in 

acre-feet).

155.00

60.70

216.00

151.00

333.00 

491.00

655.00

568.00

3,910.00

Discharge measurements at station No. 48 at 2,700-foot level, near Hilo, Hawaii, in 1912, 

[E.1 0. Christiansen, hydrographer.J

Date.

Aug. 16.. .....................

Sept. 26........ ...............

Oct. 25.......................

height.

Feet. 

0.45

.36

.47

Discharge.

Sec.-ft. 

0.07

0

.23

Date.

Nov. 19.......................

Dec. 10. ......................

Gage 

height.

Feet. 

0.58

.48

Discharge.

Sec.-ft. 

0.57

.19

NOTE. Bed of stream of gravel and some small cobbles, probably slightly shifting. One channel at all
296 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 48 at 2,100-foot level, near Hilo, Hawaii, for 191%. 

[Bomin, Billkov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]

Day.

1........ .......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.46

.44

49

.50

.52

.65

.62

.58

.52

48

.45

.44

.41 

.38

/a \

(<*)

(a)

(0)

/a\

^

fa \

(a)

(a)

(a)

Feb.

S

°)

°)

(a)

1 ft 1

(a)

0.61

.50

.40

.40 

.39

.35

.61

.80

1.20

Mar.

0.50

.47

.43

49

.51

.51

.54

.68

.73

.77

.56

.51

.76

1Q

.52 

.50

.49

.52

.52

.48

.45

.63

1.00

Apr.

0.61

.66

.61

.72

01

TO

.65

.61

IQ

.64 

.55

.62

.59

.58

.68 

.65

.64

.69

.78

79

.71

May.

1.06

.99

CQ

""."53"

.54

.57

.52

.50

June.

0 48

.46

.58

.52 

43

.45

.58

.51

.52

.49

July.

0.70

.60

.54

.50

.48

.45

.47

50

.43

.40

.44

.69

.55

.50

.44

10

Aug.

0.47

.90

.69

.49

49

44

.51

46

.52

.55 

.43

.64

""."40"

.40

40

.40

.41

.52

Sept.

0.68

1.40

1.42

1.57

1.57

1.67

.51

.52

.40

54

.44

.44

.40 

.50

.43

.40

OA

.42 

.42

.40

.38

.35

.35

.34

34

.60

Oct.

0.54

.55

.45

49

.42

49

44

.44

.62

.64

' .56

""."72"

.51

.69

.75

""."76"

.88

.61

.47

.70

.86

.86

.75

.70

Nov.

0.56

.90

.56

.43

.44

.84

1.06

.75

KQ

.63

.52

.44

.80 

on

.79

.80

.55

.67 

.54

.62

.46

.47

.45

.59

.54

Dec.

1.10

1 19

.64

.55

49

.46

.51

56

.52

.47

.42

40

.38

.46

.49

.62 

.43

.50

.60

79

.52 

.72

1.12

.83

.58

.80

.60

.50

.54

a Channel dry.

Daily discharge, in second-feet, at station No. 48 at %,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...............

2...............

3...............

4... ............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

Sept. Oct.

1.00

1.00

'1.10

1.24

1.45

1.38

1.24

1.31

1.38

1.45

1 00

1.05

1.10

1.17

1.24

Nov.

0.21

.21

.21

.25

.60

.75

.90

1.05

1.17

.70

on

1.10

1.38

1.66

1.96

Dec.

0.25

.17

.13

.15

. -17

.25

.21

.25

3.20

1.45

1.66

.85

2 QA

5.25

7.78

Day.

16...............

17...............

18...............

19...............

20...............

91

22...............

oq

24...............

25...............

26...............

27...............

28...............

OQ

30...............

01

Sept. .

0.32

.23

.15

.42

1.10

1.00

1.24

1.66

1.10

1.96

1.00

1.00

Oct.

1.31

1.45

.85

.42

.39

.32

.25

.28

.32

.36

.39

.23

.23

.23

.23

.21

Nov.'

1.17

2.12

3.40

4.70

6.13

7.56

6.90

8.22

7.78

1.9ft

.60

.53

.53

.42

.39

Dec.

2 20

5.80

6.35

4.92

2.90

1.24

.32

.32

.28

1.96

1.45

1.80

1.45

2.90

2.70

2.20
ISLAND OF HAWAII. 297

Daily discharge, in second-feet, at statwn No. 48 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

, Day.

1.. .............

2.. ........ .....

3...............

4...............

5.... ...........

6...............

7...............

8... ..... .......

9... ......... ...

10.. ........... ..

11. ... ...........

12...............

13.. ....... ......

14.. .......... ...

15...... ... ......

16...............

17...............

18...............

19...............

20........ ...... .

21.. ........... ..

22.. ........... ..

23...............

24...............

25...............

26...............

27...............

28......... ......

29...............

30...............

31.. .............

Jan.

0.15

.15

.15

.10

.10

.25

.30

.85

.70

.50

.30

.20

.15

.10

.05

.05

.05

.05

(«)

(a)

(a)

(°)

fa\

(0) H

a

a

a

a

a

a

Feb.

a)

a)

a)

a)

°)

a

a

a

a

a

f«\

(°)

0.65

.25

.05

.05

.05

.05

.65

1.80

5.80

9.00

11.00

8.00

3.00

1.00

1.00

1.00

1.00

Mar.

0.50

.30

.25

.20

.10

.15

.20

.25

.30

.30

.40

1.00

1.30

1.60

.45

.30

1.50

3.00

2.00

.55

.30

.25

.20

.20

.30

.30

.20

.15

.10

7*

3.70

Apr.

2.00

1.00

.65

.90

.65

1.25

5.00

3.50

2.80

1.25

.85

.65

60

.55

.80

.45

.90

.70

.55

w

1.00

.85

.80

.90

1.05

1.60

1.25

1.15

.80

1.00

May.

2.50

3.00

3.00

4.30

6.00

3.60

1.00

.80

.60

.60

.60

.60

.55

.60

.70

.80

.35

.30

.40

.30

.30

.30

VI

1.00

.30

.30

.30

.40

.60

.40

.25

June.

0.20

.20

.20

.20

.20

.20

.15

.20

.20

.30

.30

.40

.50

.40

.30

.20

.10

.10

.10

.10

.15

.20

.30

.40

.50

.30

.30

.20

.20

.20

July.

0.30

.70

1.10

.60

.40

.25

.25

.20

.15

.20

4.00

1.50

.25

1.00

.10

.10

.10

.10

.10

.10

.05

.10

.15

1.05

.80

.40

.25

.15

.25

.20*>n

Aug.

0.20

.30

2.70

1.05

.25

.25

..25

.15

.30

.30

.20

.15

.30

.50

.40

.10

on

.80

1.00

.10

.05

.05

.05

.05

.05

.10

.30

.30

.20

.20

.20

Sept.

0.50

1.00

8.00

a 20

9.95

9.95

11.10

.30

.30

.20

.05

.40

.15

.15

.05

.25

.20

.10

.05

.05

.10

.10

.05

.05

.05

.03

.02

.02

.02

.60

Oct.

0.40

.40

.40

.15

.10

.10

.10

.10

.10

.15

.15

.70

.80

.45

.50

.40

1.25

.30

1.05

1.45

1.50

1.10

2.45

.65

.20

1.10

2.30

2.30

1.45

1.20

1.10

Nov.

0.45

.40

2.70

1.50

.45

.10

.10

.15

2.10

4.30

1.45

.55

.75

.30

.15

1.80

2.70

1.60

1.80

.40

1.05

.40

.70

.50

.20

.20

.15

.60

.50

.40

Dec.

4.70

4.90

.80

.40

.25

.15

.30

.45

.30

.20

.10

.05

.05

.15

.25

.70

.10

.25

.60

1.25

.30

1.25

4.90

2.05

.55

1.80

.60

.25

.40

.20

.20

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Dischage for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 48 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

September 19-29..............

December...-..- ...........

1912.

March........................

Mean 

discharge 

in secondfeet.

0.93 

1.83

2.18

2.05

.14

1.53

.68

1.20

Rtm-off 

(total in 

acre-feet).

Kf\ cn

126.00

8.61

88.00 41 sn

71 40

Month.

1912 Continued. 

May..........................

July.. ....... .................

August .......................

September. ..................

December " " "

Mean 

discharge 

in secondfeet.

1.14 

.24

.49

.36

1.73

.79

.95 .^92

84

Run-off 

(total in 

acre-feet).

70.10 

14 "?n

30.10

22.10

103.00 

48.60

56.50

56.60

611.00

Discharge measurements at station No. 49 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date. " -

Aug. W..~~.~. ...............

Sept. 26........ .............. 

Oct. 25..... ..................

Gage 

height.

Feet^ 

-0.09

(0) o.

Diacharge.

Secjt.

"""6."05

Date.

Nov. 19 ....... T. .............

Dec. 10..... ..................

Gage 

height.

. Feet. _ 

0.12

.08

Discharge.

..£ec,-JLt._ 

0.13

.05

a Channel dry. 

NOTE. Bed of stream of silt and sand .shifting. One channel at all
298 WATEB EESOUBCES OF HAWAII, 1912.

Dally gage height, in feet, at station No. 49 at2,700-foot level, near Hilo, Hawaii, for 191$. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.}

Day.

1...............

3............... 

4............... 

5...............

*::::::::::::::

8...............

9............... 

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

22!""!"!"I!!!

23...............

24...............

25...............

26...............

27...............

28............... 

29...............

30...............

31...............

Jan.

0.04 

(a)

.02

.04

.09

.05 

.02

a

a

a

a

a

(«)

«)

a)

(o)

(O)

(aj 

(a)

(a)

Feb.

ir

(o)

i»)

(«)

(o)

0.08

.05

+.10

+.10 

+.11

+.12

.15

.25

.50

.......

Mar.

0.12 

+.10 

+.11

. .10

.15 

.15

.12

.36

.32

.39

.18

.15 

.42

.22

.12 

+.10

.12

.11

.11

+.01

+.09 

+ .15

.32

.51

Apr,

0.18 

.38 

.27

.32

.38 

.35

.21

.14

.06

.19

.12

.24

.11

.25

.23

.22

.21

.35

.41

.32

+.09

May.

"O.'TS"

.73

.......

.10

.......

/o \

.......

ta \

^

ta\

ta\

.......

/o\

June.

.......

fa\

.......

+0.15

+.09

00

.09

.06

.11

.06

July.

0.19 

.11

rts

.02

.01

.02

60

.......

.15

.10

.08

.01

.......

Aug.

-0.06

.40 

.19

f¥>

49

 03

.05 

.05

-.05

.05

.05

-.08

.11

"-."16"

.00

-.01

.04

.04

.02

Sept.

0.20

.90 

.88 

.16

.28

.32

.12

.08

.01

.88

-.01

-.03

-.04

-.01

-.04

-.05

-.01 

.00

-.03

-.05

-.05

-.06

-.09 

-.08

.15

Oct.

0.08

.07

-!ll

_ in

-.10

"-."62"

-.05

.08

-.02

.12

""."34"

.02

.30

.50

""'."28"

.55

.25

.05

.28

.50

.38 

.35

.21

Nov.

0.03

.30 

'"'cut'

.02

.08

.42 

.52

.20

.12

.21

.02

-.02

.48 

.50

.35

.30

.16

.21 

.08

.22

-.01

-.01

-.02

.09

.15

Dec.

0.75

.31

.40 

.32 

.14

.02

.21

.42

,14 

.03

-.11

-.15

-.15

-.13

.02

.28 

-.06

.08

.23

.35

.22 

.40

.82

.30

.06

.32

.12

.05 

.10

o Channel dry. 

Monthly discharge at station No. 49 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

o0.05

o.io

o.lO

.003

.090

.110

.180

.120

Run-off 

(total in 

acre-feet).

3.08

6.95

6. IS

.20

5.30

10.70

7.10

Mcnth.

1912 Continued.

July..........................

Mean 

feet.

0.02

.04

.04

1O

.13

.13

.15

.09

Run-oft 

(total in 

acre-feet).

1.00

2.60

2.40

7.30

8.30

7.70

9.10

68.40

o Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50.

Discharge measurements at station No. SO at %,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.)

Date.

Sept. 28.. ....................

Oct. 23... ....................

Gaga 

height.

Feet. 

0.39

qc

1.31

Discharge.

Sec.-ft. 

0.07

(U

3.00

Date.

Oct. 25.......... .............

Nov. 19......................

Dec. 10.......................

Gage 

height.

Feel. 

0.46

.79

.40

Discharge.

Sec.-ft. 

0.21

.45

.15

NOTE. Bed of stream of sand and gravel; shifting slightly. One channel at all stages.
ISLAND OF HAWAII. 299

Daily gage Tieight, in feet, at station No. SO at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonotf, and Kuznetsofl, observers.}

Day.

1...............

2...............

3...............

4...............

................

6.. .............

7...............

8...............

9...............

10............... 

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18............... 

19...............

20...............

21...............

22...............

23...............

24...............

25

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

Q.41

.40

.36

.35

.32

.32

.34

.39

.34

.34 

.32

.31

.31

.30

.29

.29

.29

.25 

.25

.25

.25

.25

.25

.25

.25

.26

.30

.29

.25

.24 

.24

Feb.

0.24

.24

.24

.24

.24

.22

.22

.21

.21

.21

.23

.41

.33

.26

.24

.22

.21 

.35

.72

1.15

1.55

1.68

1.31

1.20

.85

.80

.90

.80

Mar.

0.85

.81

.72

.52

.45

.45

.52

.72

.82

.73 

.98

1.02

.98

1 05

.78

.61

1.06

1.51 

1.30

.70

.67

.44

.78

.54

.44

.44

.40

.35

.34

.71 

.98

Apr.

0.50

.52

.59

.89

.76

.96

1.70

1.34

1.02

.93

.84

.79

.71

.54

.81

.61

.88

.90

.78

.91

.88

.75

.71

.69

.92

.96

.72

.60

.58

.54

May.

0.69

.74

.79

1.02

.94

.72

.65

.62

.60 

.59

.59

.69

.60

.58 

.55

.58

.55

.52

.46

.44

.42

.43

.44

.42

.42

.45

.42

June.

0.45

.42

.38

.38

.38

.38

44

.44

.49

.48

.45

.51

.46

......

.40

.40

.48

.71

.69

.82

.66

.60

.55

July.

0.65

.69

2.00

.82

.60

.60

.54

.53

.52

.81 

1.01

.74

.60

.79

.53

.50

.51

.52

.48

.48

.48

.46

.58

.80

.67

.64

.59

.52

.61

.58 

.50

Aug.

0.47

.40

1.15

.67

.46

.41

.61

.41

.72

.68 

.56

.49

.68

.70

.81

.65

.46

.74 

.76

.65

.51

.39

.39

.51

.36

.64

.79

.79

.72

.95 

.90

Sept.

1.05

.92

1.35

1.52

.80

.67

1.01

.46

.51

.44 

.39

.88

.59

.58

.46

.72

.49

.51 

.36

.48

.60

.62

.50

.41

.39

.38

.36

.34

.54

.96

Oct.

0.78

.76

.75

.72

.72

.70

.71

.71

.75

.79

.78

.78

.74

.86

.90

.92

1.08

.78 

.82

1.18

.76

1.60

1.19

.92

.68

1.05

1.59

1.36

1.22

1.01 

.98

Nov.

0.82

.84

1.28

.78

.76

.60

.53

.65

1.28

1.49 

1.00

.79

.76

.60

.48

1.09

1.25

1.12 

1.00

.80

.76

.80

.98

.90

.72

.60

.88

.86

.79

.88

Dec.

1.42

1.22

1.39

.76

.52

.44

.43

.44

.44

.40 

.38

.35

.35

.35

.34

.46

.34

.32 

.45

.66

.42

.73

1.34

.96

.43

.59

.40

.25

.28

Daily discharge, in second-feet, at station No. SO at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

W.. ............ .

11...............

12...............

13...............

14...............

15...............

Sept.

0.46

.46

1 04

Oct.

0.46

.22

1.70

2.78

.56

.53

.92

.77

.65

.50

.30

.18

.18

.10

4fi

Nov.

0.05

.05

.13

.18

.14

44

.28

. .28

.34

.16

.14

.13

.42

.24

.80

Dec.

0.10

.10

.05

.05

.10

.10

.10

.10

.30

.15

.14

.12

.80

.56

3.50

Day.

16...............

17...............

18...............

19...............

20

91

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

01

Sept.

0.62

.38

1.00

.46

44

94

1.45

.84

1.25

.53

84

.65

.88

.34

DA

Oct.

0 18

4A

.21

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.05

.05

Nov.

0.24

.68

.32

1.12

.28

2 QA

3.38

3.80

2.60

.88

.18

.14

.16

.15

.10

Dec.

1.82

1 4A

1.20

1.20

1.12

.15

.12

.05

.05

.22

.05

.21

.10

.14

.05

.05
300 WATER RESOURCES OF HAW AH, 1912.

Daily discharge, in second-feet, at station No. 50 at 2,700-foot level, near Hilo, Hawaii^

for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.05

.05

.05

.05

.05

Feb.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.30

2.00

4.40

5.20

3.00

2.30

.65

.50

.80

.50

Mar.

0.65

.50

.30

.10

.05

.05

.10

.30

.60

.40

1.10

1.30

1.10

1.40

.50

.15

1.50

4.20

2.90

.30

.25

.05

.50

.10

.05

.05

.05

.05

.05

.30

1.10

Apr.

0.10

.10

.15

.80

.40

1.00

5.30

3.10

1.30

.90

.60

.50

.30

.10

.50

.15

.70

.80

.50

.80

.70

.40

.30

.30

.90

1.00

.30

.15

.15

.10

May.

0.30

.40

.50

1.30

.95

.30

.20

.20

.20

.15

.15

.15

.15

.20

.30

.20

.15

.15

.10

.15

 .10

.10

.10

.05

.05

.05

.05

.05

.05

.05

.05

June.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.10

.10

.10

.10

.10

.10

.10

.05

.05

.05

.10

.20

.20

.30

.30

.60

.20

.15

.10

July.

0.20

.30

7.10

.60

.15

.15

.10

.10

.10

.50

1.25

.40

.15

.50

.10

.10

.10

.10

.10

.10

.10

.10

.15

.50

.25

.20

.15

.10

.15

.15

.10

Aug.

0.10

.05

2.00

.25

.10

.05

.15

.05

.30

.30

.10

.10

.30

.30

.50

.20

.10

.40

.40

.20

.10

.05

.05

.10

.05

.20

.50

.50

.30

1.00

.80

Sept.

1.40

.90

3.20

4.20

.50

.25

1.25

.10

.10

.05

.05

.70

.15

.15

.10

.30

.10

.10

.05

.10

.15

.20

.10

.05

.05

.05

.05

.05

.10

1.00

Oct.

0.50

.40

.40

.30

.30

.30

.30

.30

.40

.50

.50

.50

.40

.70

.80

.90

1.60

.50

.60

2.20

.40

4.70

2.20

.90

.30

1.45

4.60

3.30

2.40

1.25

1.10

Nov.

0.60

.60

2.80

.50

.40

.15

.10

.20

2.80

4.00

1.20

.50

.40

.15

.10

1.65

2.60

1.80

1.20 .50'

.40

.50

1.10

.80

.30

.15

.70

.70

.50

.70

Dec.

3.60

2.40

3.40

.40

.10

.05

.05

.05

.05

.05

.05

.05

.05

.10

.20

.10

.10

.10

.10

.20

.05

.40

3.10

1.00

.05

.15

.05

.05

.05

.05

.05

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near this station .

Monthly discharge at station No. 50 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

September 13-30.. ............

December ....................

1912.

April.................. .....

Mean 

discharge 

in secondfeet.

0.70 

.40

.69

.45

.05

.71

.75

Run-oft 

(total: in 

acre-feet).

"""24." 60

41.20

28.00

3.07

40.80

40.00

44.60

Month.

1912 Continued. 

May..........................

July..........................

Mean 

discharge 

in secondfeet.

0.22 

.12

.46

.31

CO

1.13

.94

.52

.53

Run-off 

(total in 

acre-feet).

13.50 

7.14

28.30

19.10

OA Qrt

69.50

55.90

32.00

385.00

Discharge measurements at station No. 51 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.] "" "~~~ " ' -

Date.

Aug. 20....... ................

Sept.28......... ..............

Nov.7.. ......................

Gage 

height.

Feet. 

0 84

.74

Discharge..

Sec.-ft. 

0.09

.02

.13

Date.

Nov.19... ....................

Gage 

height.

Feet. 

0.90

.80

Discharge

Sec.-ft. 

0.44

.2C

NOTE. Bed of stream of silt, sand, and gravel; probably shifting. One channel at all stages.
ISLAND OF HAWAII. 301

Daily gage height, in feet, at station No. 51 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12. ....... 

13...............

14............... 

15...............

16............... 

17...............

18...............

19...............

20............... 

21...............

22...............

23...............

24...............

25...............

26_.. ............

27............... 

28...............

29...............

30...............

31...............

Jan.

0.80

.81 

.80

.80

.78

.75 

.74

.74

.74

.74

.74

.74

.72

.72

.71

.71

.70

.70

.72 

.70 

.70

.69

Feb.

6.69

.68

.68

.68

.68

.68

.66 

1.05

.82 

.74

.71 

.70

.......

.90

.88

Mar.

1.02

.85

.84

.80

.79

.85

.91

.92

1.40

1.35 

1.48

1.44

"i.'iiT

1.47

1.02

1.21 

.86

.80

.88

.90

.89

.83 

.82 

.79

.89

1.70

Apr.

1.30

1.29

1.11 

1.01

1.52

1.12

1.05

1.02 

.99

.90 

.91

.90

.95

.91 

.93

1.01

.96

1.05

1.19

.99 

.95

May.

1.05

.79

.79

.......

.78

.73

.......

.79

.86

.79

""."79"

June.

0.79

.78

.77

.......

.78

.85

.81

.81

1.01 

.91

July.

0.85

.93

.95

.97 

.90

.82

1.16

""."96"

1.00

""."83*

.82

.81

.89

.89

.85 

.82 

.87

.82

.80

Aug.

0.80

1.65

1 14

.93 

""."96"

.84

.95

.90

.86

.90 

1.01

""."82*

Q1

.80

.80

.84

.79

.79

.87

Sept.

1.60

.96

.98 

1.05

" .88

.86

.80

.90

.88

.90

.82

.89

.84

.80

.80

.80

.89

.79

.78

.75

.74 

.74 

.74

Oct.

0.82

.80

.78

.76 

.74

.74

7Q

.76

.80 

.79

.88

.80 

1.12

.90

<W

1.10

1.08

1.37

1.04

su

.95

1.65 

1.16 

1.33

1.11

Nov.

1.36

.88

""."so"

.81

1.06

1.60

1.01

.90 

.92

.82 

.80

1.20 

1.32

.98

.98

.86 

.87

.84

1.00

.80

.80

.80 

.96

.87

.80

Dec.

0.80

.78 

.80

.85

.80

.80

.78

.75

.72

.75 

.80

.91 

.77

.80

.90

1.03

.84

1.09

1.56

1.20

.86

1.18

""."82 

.83

Monthly discharge at station No. 51 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

February. ....................

April.........................

Mean 

discharge 

in secondfeet.

o.50

0.50

.10

.14

.71

.71

Run-off 

(total in 

acre-feet).

24.60

29.80

30.80

6.20

8.10

43 60

42.50

Month.

1912 Continued. 

May..........................

July..........................

Mean 

discharge 

in secondfeet.

0.29

.23

.33

.35

43

.56

.54

- .46

.40

Run-off 

(total in 

acre-feet).

17.60

12.10

20.20

21.60

25.40

34.50

32.00

28.00

292.00

a Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near station No. 50.

Discharge measurements at station No. 52 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

1 [E. O. Christiansen, hydrographer.]

Date.

Aug. 20....... ................

Sept. 28. ......................

Gage 

height.

Feet. 

0.76

.34

Discharge.

Sec.-ft. 

9.13

2.84

Date.

Nov.19...... .................

Dec. 10. ......................

height.

Feet. 

1.58

1.10

Discharge.

Sec.-ft. 

49.3

20.4

NOTE. Bed of stream of cobbles and some large bowlders. Section at gage is quite rough. Station is 

probably permanent. One channel at all stages.
302 WATER RESOURCES OP HAWAII, 1912.

Daily gage height, in feet, at station No. 52 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1. ....... .......

2...............

3...............

4...............

5...;...........

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21.... ...........

22...............

23...............

24...............

25............... 

26...............

27...............

28............... 

29...............

30...............

31...............

Jan.

0.60

.00

.61

.62

.42

.42 

.41 

.41

.38

.30

.15

.12

.11

.10

.09

.09

.08 

.08

.08

.06 

.05

.06

Feb.

-0.20

- .22

- .70

- .70

- .71

- .72

- .75 

.56 

.52

.22

.05

1.00 

1.21

.......

Mar.

1.46

1.18

.91

.82

.68

.82

.91

.96

1.22

1.98 

2.06 

2.22

1.96

2.25

1.16

1 OS

1.11

1.08

1.12

.96 

.86

.78

.64 

.54

.62

2.80

Apr.

1.43

1.49

1.76

1 91

3.36

2.15

2.35

1.58 

1.39

1 IS

1.23

1.40

1.35

1.37

1.33

1 4Q

1.52

2.10

1 Qfi

1.98

1.91

May.

2.10

1.40

1.28

.86

.00

4S

.90

.60

.58

June.

0.42

.23

.66

.......

.40

.80

1.41

1.50

1.41

July.

1.00

1.11

1.12

1.11

1.08

.82

2. 28 "i.'ig"

1.74

.84

.78

.78

.79 

.69

.75

.69 

.63

.54

.49

Aug.

0.40

2.08

1.29

91

.64

.59

.62

.64

.61 ""."si"

1.12

.64

.95

.00

.49

78

.64 

.51

1.20

Sept.

i on

1 Ql

1.72

2.38

1.45

1.35

1.00

1.52 

1.29 

1.10

.98

.96

.87

.81

.69

.00

.00

.54

4Q

.40

.36

.34 

.31

Oct.

0.71

.70

.00

fa

.46

.46

.64

.57

1.30 

.82 

1.01

1.08

2.71

1.34

1.78

2.11

2.12

3.14

2.16

1.55 

1.41

3.76

2.70 

2.59

2.16

Nov.

3.42

1 84

1.12

1 13

1.88

4.16

2.57

1.91 

1.73 

1.35

1.13

1.84

2.85

1.80

2.26

1.00

1.44

1.42

1.56

1.12 

1.06

.97

1.11 

1.33

.98

Dec.

1.15

1.10

1.30

1.70

1.35

1.11

.95

.87 

.78

.85

.94

1.22

.99

.81

1.30

2.15

1.28

2.45

3.81

1180 

2.68

1.35 

1.28

Daily discharge, in second-feet, at station No. 52 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1... .........

2............

3............

4............

5............

6............ 

7... ......... 

8............

9............ 

10............

Oct.

78.0

76.2

68.1

173.0

128.0

92.4 

64.5 

62.7

60.9 

45.6

Nov.

6.8

11.0

16.4

24.0

34.0

47.2 

93.5

CO A

42.6 

30.5

Dec.

12.8

U o

10.7

6.4

6.6

6.6 

6.4 

10.7

14.3 

10.7

Day.

11............

12............

13............

14............

15............

16............ 

17............

IS

19............ 

20............

Oct.

35.2

27.0

19.8

14.3

14.3

14.0 

14.0

 to 7

13.7 

11.6

Nov.

21.0

14.3

23.0

20.6

24.0

27.0 

37.0 

50.4

70.8 

93.5

Dec.

9.7

56.0

164.0

354.0

623.0

111.0 

132.0 

118.0

139.0 

139.0

Day.

21............

22............

23............

24............

26.............

26... .. ....... 

27............ 

28............

29............ 

30............ 

31............

Oct.

9.4

8.4

7.6

6.8

6.1

5.6 

5.1

4.8

4.5 

4.3 '.0

Nov.

528.0

337.0

365.0

314.6

88.0

44.0 

22.0

17.8

17.0 

14.0

Dec.

55.2

17.0

15.5

55.2

40.5

37.0 

21.0 

37.0

40.5 

37.0 

31.0
ISLAND OF HAWAII. 303

Daily discharge, in second-feet, at station No. 52 at 2,700-foot level, near Hilo, Hawaii,

for 191%.

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

9............... 10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

%..... ...........

22

23...............

24...............

25...

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

6.00

6.00

6.00

6.00

6.40

6.40

6.60

6.80

5.80

4.80

3.80

3.80

3.60

3.60

3.30

2.50

2.00

2.00

1.40

1.20

1.20

1.10

1.10

1.10

1.00

1.00

1.00

.90

.90

.90

.90

Feb.

0.20

.20

.20

.20

.20

.20

.10

.10

.10

.10

.10

.10

5.80

5.10

1.90

1.40

.90

.50

.30

2 00

250 00

400.00

500.00

300.00

52.00

26.00

20.00

20.00

20.00

Mar.

30.00

41.00

25.00

14.00

12.00

8.00

12.00

13.00

14.00

16.00

27.00

86.00

95.00

114.00

104.00

94.00

84.00

118.00

24.00

83.00

21.00

20.00

22.00

19.00

16.00

13.00

10.00

7.20

5.40

6.80

211.00

Apr.

100.00

50.00

39.00

43.00

65.00

70.00

500.00

400.00

333.00

105.00

132.00

50.00

36.00

25.00

27.00

30.00

34.00

37.00

34.00

35.00

32.00

41.00

45.00

21.00

50.00

84.00

86.00

79.00

40.00

50.00

May.

50.00

60.00

60.00

80.00

99.00

80.00

50.00

4n nn

40.00

37.00

34.00

30.00

25.00

20.00

15.00

12.00

9.20

6.40

6.00

5.50

5.00

4.50

9.20

14.00

10.20

6.40

6.20

6.10

5.00

4.00

4.00

June.

3.80

3.00

2.50

2.50

2.00

1.90

4.80

7.60

7.00

6.40

5.70

5.00

4.40

3.80

3.60

3.50

5.00

7.00

9.00

11.00

15.00

19.00

24.00

29.00

33.00

37.00

dd ftrt

37.00

30.00

24.00

July.

17.00

21.00

90.00

50.00

22.00

21.00

20.00

16.00

12.00

10.00

120.00

60.00

25.00

63.00

40.00

20.00

12.00

11.00

10.00

10.00

10.00

10.00

10.00

10.00

10.00

8.20

9 on

8.20

7 00

5.40

4.70

Aug.

4.10

3.50

96.00

30.00

12.00

9.50

7.00

6.20

6.80

7.00

6.80

6.60

8.bO

11.00

22 00

7.00

7.00

11.00

15.00

10.00

6.40

5.60

4.70

10.00

7 00

4 95

26.00

20.00

15.00

10.00

15.00

Sept.

200.00

250.00

463.00

540.00

79.00

61.00

136.00

40.00

34.00

26.00

17.00

45.00

30.00

21.00

16.00

15.00

13.00

11.00

8.20

7.20

A dfl

6.40

5.40

4.70

4.10

3.50

3.10

2.90

2.50

4.00

Oct.

6.00

8.70

8.60

8.40

6.40

6.10

4.30

4.30

5.60

7.00

5.90

31.00

12.00

17.00

18.00

20.00

193.00

35.00

10.50

22.00

22.00

22.00

283.00

106.00

48.00

33.00

424.00

191.00

171.00

106.00

100.00

Nov.

250.00

200.00

346.00

100.00

72.00

50.00

22.00

22.00

76.00

531.00

167.00

79.00

62.00

34.00

22.00

72.00

221.00

69.00

119.00

52.00

39.00

38.00

48.00

35.00

22.00

19.00

16.00

21.00

32.00

16.00

Dec.

150.00

200.00

70.00

40.00

23.00

21.00

31.00

60.00

34.00

21.00

15.00

13.00

10.00

13.00

15.00

27.00

17.00

11.00

31.00

105.00

30.00

147.00

440.00

200.00

69.00

187.00

100.00

34.00

30.00

20.00

10.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 52 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October. .....................

1912.

April.........................

Xfav

Mean 

discharge 

in secondfeet.

35.30

83.10

75.10

3.20

55.40

40 80

89.10

26.90

Run-off 

(total i» 

acre-feet).

2,180

A. fun

4,630

3,190

2,510

5,300

1,650

Month.

1912 Continued. 

June .........................

July..........................

Mean

in secondfeet.

13.00

24.00

13.30

68.50

62.60

95.10

70.10

46.60

Run-off 

(total in 

acre-feet).

774

1,480

818

4,080

3,850

5,660

4*310

33,800
304 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 53 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Sept. 28............... .........

Gage 

height.

Feet. 

0.47

.38

Discharge.

Sec.-ft. 

0.01

0

Date,

Nov. 7..........................

Gage 

height.

Feet. 

0.47

48

Discharge.

Sec.-ft. 

0.04

.03

NOTE. Bed of stream of sand and gravel; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 53 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Knznetsoff, observers.]

Day.

1.. .............

2...............

3...............

5...............

6............... 

7...............

8...............

9...............

10...............

11............... 

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

22............... 

23...............

24............... 

25...............

26...............

27...............

28...............

9Q

30...............

31...............

Jan.'

0.44

.44

.44

.45

.40 

.40

.38

.38

.35 

.35

(a)

(a) 

(a)

(«) 

(«)

(«) 

(a)

(a)

(»)

(»)

(«)

(«)

Feb.

(a)

(a)

(a)

(a)

(a)

0.55

.45

.40

.40 

.40

.......

.......

""."53"

.42

Mar.

0.52

.51

.41

.45

.42

4fi

.56

.52

.79 

1.30

on

.99

"Vee"

.98

.. .76

.74 

.66

.64 

.68

""."55"

.54

4Q

.45

.49

Apr.

O £Q

.82

.61

.66

.62

.61 

.60

.58

.50

.54

Kft

.60

.54 

sfi

.64 

.63

.64

7O

.73

.73

May.

1.61

.56

""."55"

.41

.41

.......

.41

.43

.38

.30

June.

0.20

.21

.30

.......

.34

.35

.31

.......

.......

.58

.61

.58

July.

0.48

.53

.58

.51 

.50

.50

.70

.50

.61

""."78"

.70

.74

.......

""."56"

.50

.51

.47

.49

.45

.40

Aug.

0.40

.99

.59

.54

""."53"

.48

.50

.52

""."49"

.52

.64 

""."44"

.55

.42 "Vio"

.40

4rt

.39

4Q

Sept.

0.51

.53 

.59

.48

.45

.50 

.52

.50

.50

.44

.48 

.45

.44

.41

42

.43 

.41

.40

.40

.39

.38

.39

Oct.

0.44

.44

.42

.41 

.40

.40

.43

.41 

.48

.43

.49

.43

.50

.54

.69

.71

.52 

.50

.54

.66

Nov.

a 52

""."44"

.46

.64

"Vse"

.55

.50

.48

.81 

.92

.70

.69

.60

.55

.58 

.64

"".62

.52

.52

.64

.61

.54

Dec.

a 60

.53 

.55

.61

.60

.52

.48 

.45

40

.41

.46

.56 

.43

.47

.58

.80

.54

.88

.95 

.56

.89

.50

.50

a Channel dry.

Daily discharge, in second-feet, at station No. 53 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. .......... 

2............ 

3............

5............ 

6............

7............

8............ 

9............ 

10...........

Oct.

"6~35' 

.30

.26 

.22

.18 

.15 

.12 

.10

Nov.

0.05 

.05 

.05 

.10

.10 

.10

.15 

.18 

.13 

.10

Dec.

0.01 

.01 

.01 

.01

.03 

.03

.05 

.05 

.10 

.05

Day.

11............ 

12............ 

13............ 

14............

15............ 

16............

17............ 

18............ 

19............ 

20............

Oct.

0.10 

.05 

.05 

.05

.05 

.05

.05 

.05 

.05 

.05

Nov.

0.10 

.05 

.16 

.10

.10 

.10

.10 

.10 

.12 

.14

Dec.

0.05 

.15 

.30

.48

.62 

.42

.50 

.42 

.53 

.53

Day.

21............ 

22............ 

23............ 

24............

25............ 

26............

27............ 

28............ 

29............ 

30............ 

31 ...........

Oct.

0.05 

.05 

.05 

.05

.05 

.05

.OS 

.05 

.05 

.05 

.05

Nov.

0.13 

.12 

.12 

.11

.11

.05

.05 

.05 

.05 

.03

Dec.

0.35 

.15 

.15 

.35

.28 

. 26

.23 

.23 

.28 

.28 

.28
ISLAND OF HAWAII. 305

Daily discharge, in second-feet, at station No. 53 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1..... ..........

2............... 

3...............

4...............

5...............

6...............

7...............

8............... 

9............... 

10...............

11............... 

12............... 

13............... 

14............... 

15...............

16............... 

17............... 

18...............

19...............

20...............

21............... 

22...............

23...............

24...............

25............... 

26...............

27............... 

28............... 

29............... 

30...............

31...............

Jan.

.......

.......

.......

Feb.

.......

.......

0.10

Mar.

0.05

.05 

05

.05

.05

.05

.05

.05 

.10 

.05

.35 

1.10

.50 

.65 

.40

.25 

.15 

.60

30

.25

.15

.15

.20

.10

.05 

.05

.05 

.05 

.05 

.05

-.25

Apr.

a is

.10 

.10

.40

.10

.15

.35

.30 

.20 

.10

.10

.10 

.10 

.05 

.05

.10 

.10 

.10

.10

.05

.05 

.15

.13

.15

.20 

.25

.25 

.25 

.20

May.

.......

1.55

"".'(&

""."65"

.......

.......

 "" 

June.

.......

'".'."'.

.......

0.05

.10 

.05

July.

a 05

.05 

.05

.05

.05

.05

.05

'.05 

.05 

.05

.20 

.10

.10 

.10 

.10

.20 

.30 

.20

.20

95

.20 

.10

.10

.20

.05 

.05

.05 

.05 

.05 

.05

.05

Aug.

0.05

.10

.65

.10

.05

.05

.05

.05 

.05 

.05

.05 

.05 

.05 

.05 

.15

.10 

.05 

.05

.05

.05

.05

.05

05

05

.05 

.05

.15 

.10 

.10 

.05

.10

Sept.

a 40

.50 

1.00

1.30

.05

.05

.10

.10 

.10 

.05

.05 

.05 

.05 

.05 

.05

.05 

.05 

.05

.05

.05

.05 

.05

.05

.05

.05 

.05

.05 

.05 

.05 

.05

Oct.

.......

"a 65"

.05

.20

"".'26"

.05

.05 

.05

"Vis"

Nov.

0.05

.10 

.20

.10

.05

.05

.05

.10 

.15 

.40

.20 

.10 

.05 

.05 

.05

.35 

.60 

.20

.20

.10

.05 

.10

.15

.10

.05 

.05

.05 

.15 

.10 

.05

Dec.

0.40

.90 

.20

.10

.10

.10

.10

.10 

.10 

.05

.05 

.05 

.05 

.05 

.05

.10 

.05 

.05

.10

.35

.05 

.45

1.50

.55

.10 

.50

.30 

.05 

.03 

.05

.05

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 53 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October 3-31..................

December. ...................

1912.

May..........................

Mean 

discharge 

in secondfeet.

0.10

.10

.23

.03

.05

.20

.15

04

Run-off 

(total in 

acre-feet).

5.52

5.75

14.30

1.84

2.88

12.30

8.93

2 4.fi

Month.

1912 Continued.

July..........................

August .......................

September ...................

Mean 

discharge 

in secondfeet.

0.02

.10

.09

.16 

.05

.13

.22

.10

Run-off 

(total in 

acre-feet).

1.19

6.15

5.53

3! 07

7.74

13.50

75.10

Discharge measurements at station No. 54 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20.......................

Sept. 28....... ...............

Gage 

height.

Feet. 

0.81

.67

Dis= 

charge.

Sec.-ft. 

0.60

.09

Date.

Nov. 7.. ....................

Gage 

height.

feet. 

0.83

.83

Discharge.

Sec.-ft. 

0.60

.75

NOTE. Bed of stream of gravel and bedrock; only siightly shifting. One channel at allstages. 

14694° WSP 336 14 20
306 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 54 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

2.. .............

3...............

4...............

5...............

6...............

7...............

8...............

9

10...............

11...............

19

13...............

14............... 

15...............

16...............

17...............

18...............

19...............

20...............

21............... 

22............... 

23...............

24...............

25...............

26...............

27...............

23...............

29...............

30...............

31...............

Jan.

0.69 

.69

.69

.70

.61 

.61

.60

.60 

.50

.48

.44

.44

.44 

.42 

.41

.41 

.40

.40

.41

.38

.36

.35

Feb.

(a) w

ftr(a)

0 86

.76 

.66

.60

.51

.......

""."95"

.78

Mar.

0.92

.90

.82

.78 

.75

.81

.89

.85

1.04 

1.10

1.29

1.31

1.04 

1.39

oo

1.14

.92 

.91 

.93

""."86"

.84

.79

.74

.72

.79

Apr.

0-99

1.17

.98 

.98

1

AQ

1.05 

93

95

.88 

so

""."95"

Q9

.89

.91 

.99 

.99

1.11

1.19

1.01

QQ

May.

1.32

OS

"O'OQ"

.......

.61

60

""."72"

.75

.70

.68

June.

0.61

.59

.70

.......

.82

.76

.80

.......

.98

1.08

OS

July.

0.80

.88

.92 

.83

.85

.80

1.19

.84

1.04

.81

.75

.74

""."si"

.81

.82

79

.80

.75

.71

Aug.

0.66

1.70

.95

.84

.82

.75

.80

.88

""."so"

.85 

1.04

.79

.90

.75 

""."TO"

.71 

.70

.65

.88

Sept.

1.01 

1.00

1.16

01

.89

.80 

.99

.91

.90

.81

.89

.84 

.82

.77

.75 

.79 

.74

.71

.68

.64

.62

.62

Oct.

0.84

.84

.80 

.78

.75

.74

S3

.80 

93

.88

.92

.90

'"."97"

1.06

1.32

1.10 

.90

.98

1.22

Nov.

0.97

.82

.86

1.12

"i.'os"

1.06

.92

.84

1.22

1.56 

1.08

1.12

.98

.93 

.94 

1.00 ""."Is"

.85

.82

1.02

1.02

.89

Dec.

0.90

.88

.90

1 00

.99

89

.81 

.80

.80

.80 

.86

.98

.84 

.84

1 04

1.26

.92 

1.35

1.58 

.98

1.45

on

.91

a Channel dry.

Daily discharge, in second-feet, at station No. 54 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...........

2. .......... 

3. ..........

4.... ....... 

5...........

6...........

7........... 

8...........

9...........

10...........

Oct.

"i7.'6"

13.8 

11.2

9.2

7.2 

5.4 

3.9

2.7

Nov.

0.2

.4 

.7

1.3 

2.3

3.5

4.7 

5.4 

3.7

2.4

Dec.

0.2

.1 

.1

.1

.1

.1

.1 

.3 

.3

.3

Day.

11...........

12........... 

13...........

14........... 

15...........

16...........

17........... 

18........... 

19...........

20...........

Oct.

2.0

1.2

.8

.4 

.4

.5

.5 

.5 

.5

.4

Nov.

1.3

.7 

2.9

1.3 

1.3

1.3

2.0 

2.6

3.7

4.7

Dec.

0.2

1.3

4.7

10.0 

21.0

10.6

11.5 

10.6 

12.4

12.4

Day.

21...........

22........... 

23...........

24........... 

25...........

26...........

27...........

28........... 

29...........

30...........

31...........

Oct.

0.4

.3 

.3

.3 

.2

.2 -.2 

.1 

.1

.1

.1

Nov.

4 5

4.3 

4.1

3.9

3.7

1.3

.7 

.5 

.4

Dec.

 > 7

.9 

.9

2.7 

2.7

2.4

2.4 

2.0 

2.7

9 7

2.7
ISLAND OF HAWAII. 307

Daily discharge, in second-feet, at station No. 54 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.20

.20 

.20 

.20

Feb.

(fl 

(a

(a 

(a 

(fl

a 

a 

a 

a 

a

fj

9!

20. 

40. 

50. 

35.

2.

5. 

3.

2. 

2.

I

40 

10

10 

10 

10 

10 

00

00 

Off 

00 

00 

00

40 

00 

00 

00

Mar.

1.80 

1.60 

1.30 

.70 

.40

.30 

.60 

.90 

1.20 

.90

3.50 

4.70 

9.70 

10.30 

8.00

5.80 

3.50 

12.70 

2.60 

5.70

1.60 

1.40 

1.70 

1.40 

1.00

.80 

.50 

.30 

.30 

.50 

16.00

Apr.

7.00 

4.00 

2.60 

6.40 

2.40

2.40 

12.00 

11.00 

10.00 

4.50

3.70 

1.70 

2.00 

1.10 

1.20

1.50 

1.70 

2.00 

1.60 

1.20

1.40 

2.60 

2.60 

4.90 

6.00

7.00 

2.90 

2.60 

2.00 

3.00

May.

3.00 

4.00 

5.00 

8.00 

10.60

8.00 

5.00 

4.00 

3.00 

2.40

3.00 

52.50 

2000 

5.00 

1.00

.50 

.30 

.30 

.30 

.30

.30 

.30 

.30 

.30

.30

.20 

.20 

.20 

.20 

.20 

.20

June.

0.20 

.20 

.20 

.20 

.20

.20 

.20 

.20 

.20 

.30

.40 

.50 

60 

.70 

.50

.35 

.40 

.40 

.40 

.50

.80 

1.10 

1.40 

1.70 

2.00

2.40 

4.30 

2.40 

2.00 

2.00

July.

0.50 

1.10 

20.00 

10.00 

1.60

.70 

.90 

.70 

.50 

.50

6.90 

3.00 

.80 

3.50 

1.00

.80 

.60 

.50 

.40 

.30

.30 

.40 

.50 

.60 

.60

.60 

.70 

.50 

.50 

.40 

.20

Aug.

0.60 

1.00 

25.00 

2.00 

.80

.80 

.70 

.40 

.50 

1.10

.80 

.50 

.70 

.90 

3.50

.50 

.50 

.90 

1.30 

.40

.40 

.30 

.20 

.20 

.20

.10 

1.10 

1.00 

.80 

.50 

.30

Sept.

2.50 

3.00 

6.00 

10.00 

2.90

2.70 

6.20 

1.40 

1.20

.80

.50 

2.60 

1.40 

1.30 

.60

1.20 

.80 

.70 

.40 

.30

.30 

.50 

.30 

.20 

.20

.20 

.20 

.20 

.20 

.50

Oct.

0.60 

.80 

.80 

.80 

.50

.50 

.30 

.30 

.50 

.70

.50 

1.70 

1.10 

1.60 

1.50

1.30 

4.00 

2.30 

3.90 

10.60

10.00 

9.20 

20.00 

4.70 

1.30

2.50 

50.00 

40.00 

25.00 

7.80 

5.00

Nov.

10.00 

15.00 

25.00 

14.00 

2.30

1.50 

.70 

1.00 

5.20 

12.00

11.00 

4.30 

3.90 

1.60 

.80

7.80 

19.40 

4.30 

5.20 

2.50

1.70 

1.90 

2.70 

1.90 

1.10

.90 

.70 

3.10 

3.10 

1.20

Dec.

12.00 

18.00 

14.00 

8.00 

1.30

1.10 

1.30 

2.70 

2.60 

1.20

.61 

.50 

.50 

.50 

1.00

2.40 

.80 

.80 

3.50

8.90

1.60 

11.50 

40.00 

20.20 

2.40

15.00 

20.00 

1.30 

1.40 

1.00 

1.00

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 54 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October 3-31. .................

1912.

January......................

May..........................

Mean 

discharge 

in secondfeet.

2.74

2.33

.39

.10

5.87

3

00

3.83

4.48

Run-off 

(total in 

acre-feet).

158.0

139,0

241.0

6.15

338.00

228

275

Month.

1912 Continued.

July..........................

The year. ..............

Mean 

discharge 

in secondfeet.

0.90

1.92

1.55

1.64

6.77

5.53

5.39

3.43

Run-off 

(total in 

acre-feet).

53.60

118

95.30 Q7 sn

416.00

329

331

2,490.00
308 WATER RESOITECES OP HAWAII, 1912.

Discharge measurements at station No. 55 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20.......................

Sept. 28.......................

&.

Feet. 

1.11

.97

Discharge.

Sec.-ft. 

0.21

0

Date.

Nov.?..... ...................

Dec. 11. ......................

a,

Feet. 

1.18

1.16

Discharge.

S" . 

j.28

.29

NOTE. Bed of stream of gravel and cobbles; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 55 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14............... 

15...............

16............... 

17............... 

18...............

19............... 

20...............

21............... 

22............... 

23...............

24...............

25...............

26...............

27............... 

28................

29...............

30...............

31...............

Jan.

1.00

1.00 

1 00

1.01

04

.94 .92-

.92 

.92

.92

.92 

.92

.92 

.91 

.90

on

.89

.89

.89 

.86 

.86

.86

Feb.

(a)

(a)

.......

(a)

(a)

(a)

(a)

(a)

1.12

1.05 

.98

.95 

.91

.......

1.28

1.10

Mar.

1.25

1.20

1.11

1.16

1.08 

1.14

1.21

1.15

1.36

1.40

1.51

1.61

"i.'si"

1 fiQ

1.26 

1.39

1.22 

1.03 

1 24

.88

1 1Q

1.12 

1.09 

1.06

1.16

Apr.

1.26

1 44

1.26

1.18

1 40

1.35

1.51

1.15

1.19

1 10

1.26 

1.25

1.23 

1.41 

1.39

1.37

1.43

1.39 

1.34

May.

1 48

.......

1.05

i n4

.......

1.02

OQ

"i.'oo"

1.10

1.00

""."98"

June.

n on

.84

.89

.95

1.00

"LOO"

1.21

1.31 

1.21

July.

1.11

1.22

1 28

1.16 

1.20

1.11

1 4.0

1.19

1.34

"i;i3-

1.10 

1.09

1.15

1.13

1.12 

1.09 

1.10

1.05

1.02

Aug.

1.02

1.62

1.28

1.20

"i'.iz

1.09

1.09

1.18

1.10

1.14 

1.26

1.10

1.08 "i.'oi"

1.05

1.02

1.01

1.11

Sept.

1 35

1.32 

1.45

1.26

1.21

1.10

1.29

1.29

1.27 

1.18

1.21 

1.19 

1.17

1.11

1.10 

1.11

1.08

1.01

1.00 

.99 

.99

Oct.

1.14

1.12

1.08

1.07 

1.03

1.04

1.10

1.07

1.22

1.16

1.22

1.19 

i.26"

1.36 

1.56

"i.'si"

1.43

1.27

1.31

1.48

Nov.

1 31

"i.'i?"

1.18

1.42

1.41

1.40

1.26 

1.19

1.51 

1.65 

1.42

1.46 

1.31

1.29 

1.29 

1.38

1.20.

1.18

1.15 

1.36 

1.35

1.20

Dec.

1.26

1.20 

1.20

1.30

1.25

1.20

1.16

1.10

1.09

1.10 

1.14

1.25 

1.04 

.1.11

1.30 

1.52

1.30 

1.64

1 64

1.31

1.55

L20

a Channel dry.

Daily discharge, in second-feet, at station No. 55 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1............

2............

3............

4............

5............

6............

7............ 

8............

9............ 

10............

Oct.

9 

""90"

8.00

6.80

5.60

4.40 

s An

2.42 

1.90

Nov.

0.01

.05 

.10

.46

1.00

1.76

3.40 

4.18

2.64 

1.45

Dec.

0.05

.01 

.01

.01

.01

.02

.02 

34

.58 

.34

Day.

11............

12............ 

13............

14............

15............

16............

17............ 

18............

19............ 

20............

Oct.

1.45

.70 

.40

.10

.10

.10

.10 

.10

.10 

.08

Nov.

0.70

.34 

2.05

1.00

1.00

1.00

1.45 

1.98

2.86 

3.96

Dec.

0.10

1.15 

3.52

6.80

11.60

.02

.05 

.03

.08 

.08

Day.

21............

22............ 

23............

24............

25............

26............

27............ 

28............

29............ 

30............ 

31............

Oct.

0.05

.01 

.01

.01

.01

.01

.01 

.01

.01 

.01 

.01

Nov.

3.40

2.64 

2.05

1.60

1.30

.58

.22 

.16

.10 

.08

Dec.

0.02

.02 

.02

.02

.02

.02

.02 

.01

.02 

.02 

.02
ISLAND OF HAWAH. 309

Daily discharge, in second-feet, at station No. 55 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2...............

3..........--..-

4.... ...........

5...............

6............... 

7...............

8...............

9............... 10...............

11...............

12...............

13...............

14............... 

15...............

16............... 

17............... 

18............... 

19...............

20...............

91

22...............

23.. ............ .

24...............

26...............

27...............

28...............

29............... 

30...............

31...............

Jan.

.......

.......

.......

.......

Feb.

a

a

a

a

a

a) 

a)

a)

a)

(a)

(a)

0.20

.10 

.10

.10 

.10 

.10 

.10 

.30

2.00

6.00

11.00

5.00 i on

.10

.10

.10

.10

Mar.

1.00

1.40

.70

.20

.40

.10 

.30

.60

.80

.40 

3.50

4.40

7.00

9.40 

7.30

5.20 

3.10 

11.00 

1.60 

4.20

1.00

1.10

1.30

1.10 

.80

.60

.20

.10

.10 

.50

8.00

Apr.

5.00

3.00

1.60

5.40 1 fin

.60 

10.00

9.00

8.00

4.40 

3.30

7.00

.40

.60 

.60

.50 

.80 

1.60 

1.60 i 4n

1.10

4.60

4.20

3.70 

4.40

5.10

4.20

3.10

1.00 

1.00

May.

1.00

2.00

3.00

4.00

6.30

5.00 

1.00

.50

.20

.10 

.10

.10

.10

.10 

.10

.10 

.10 

.10 

.10 

.10

.10

.10

.10

.10 

.10

.10

.10

.10

.10 

.10

.10

June.

.......

.......

.......

.......

0.80

2.40

.80

July.

0.20

1.00

5.00

3.00

1.90

.50 

.70

.40

.20

.20 

6.60

2.00

.60

3.10 

.60

.40 

.30 

.20 

.10 

.10

.10

.10

.20

.30

.30

.20

.10

.10 

.10

.10

Aug.

0.10

.20

9.70

1.90

.70

.40 

.20

.10

.10

.60 

.40

.10

.20

.30 

1.60

.10 

.20 

.30 

.50 

.30

.10

.10

.10

.10 

.10

.20

.20

.20

.10 

.10

.20

Sept.

2.00

3.00

5.00

7.00

3.30

2.60 

5.60

1.60

.80

.50 

.10

2.00

2.00

1.70 

.60

.80 

.60 

.50 

.20 

.20

.10

.20

.10

.10 

.10

.10

.10

.10

.10 

.10

Oct.

0.20

.30

.40

.20

.10

.10 

.10

.10

.10

.10 

.10

1.00

.50

1.00 

.80

.60 

2.00 

1.60 

3.50 

8.20

7.60

7.00

10.00

5.10 

1.70

2.40

11.00

10.00

8.00 

6.30

5.65

Nov.

5.00

5.00

6.00

4.00

2.40

.50 

.50

.60

4.90

9.00 

7.00

4.60

4.40

1.60 

.60

7.00 

10.00 

4.90 

5.80 

2.40

2.00

2.00

4.00

2.40 

.70

.60

.40

3.50

3.30 

.70

Dec.

4.00

8.00

5.00

3.00

1.60

.70 

.70

2.20

1.40

.70 

.50

.10

.10

.10 

.30

1.40 

.60 

.20 

2.20 

7.30

2.20

10.00

11.00

10.00 

2.40

8.00

4.00

.80

.70 

.50

.50

o Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 55 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October 3-31.. ................

1912.

January

May

Mean 

discharge 

in secondfeet.

1.56

1.45

.81

.10

.94

2 46

3.29

.81

Run-off 

(total in 

acre-feet).

89.50

8fi zf\

49.80

6.15

 54.10

1 *\J. ftrt

196.00

49.80

Month.

1912 Continued. 

June..........................

July..........................

October......................

The year. ..............

Mean 

discharge 

in secondfeet.

0.30

.94

.63

1

017

3.09

3.53

2.91

1.70

Run-off 

(total in 

acre-feet).

17.90

57.80

38.70

81.50

190.00

210.00

179.00

1,230.00
310 WATEE KESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 56 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Sept. 28......................

height.

Feet. 

0.54

.40

Discharge.

Sec.-ft. 

0

0

Date.

Nov.7........................

Dec. 11.......... .............

height.

Feet. 

0.41

46

Discharge.

Sec.-ft. 

0

0

NOTE. Bed of stream of sand and silt; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]-

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18............... 

19...............

20............... 

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28............... 

29.. ........... ..

30...............

31...............

Jan.

0.51

.51

.52

.54

(°)

(°)

(O)

(a)

(0)

(a)

"(a)"

(0)

a

a

a

a

°)

(a

(a

(a 

(a

(a

Feb.

(a)

(a)

(°)

(°)

(°)

a

a

a

a

a

(a)

(a)

.65

.......

Mar.

.62

.62

.52

.52

.55

1.84

.64

.61

.72

.69

.89

.99

.66

1.03

.71

.72 

tf.62

.61

.64

.64

.62

.60

.54 

.52

10

Apr.

.72

.52

.68

.68

.70

.68

.63

.65

.61

.62

.64 

.68

.61 

.69

.70

.68

.70

79

7?

.70

May.

0.92

.65

.61

.56

(«)

.......

.52

5?

.45

.40

June.

0.38

.30

.30

.46

.50

.......

.51

.58

.68

.58

July.

0.50

.61

.65

.51

.58

.55

.79

.59

.70

.65

"".'55'

.54

.60

.59

.58

.57 

.57

.55

.53

Aug.

0.52

1.05

.68*u

.55

.55

.57

*u

.48

.60

.70

.54

""."62"

.54

.54

.51

.52

.51

.58

Sept.

0.65

.70

73

.67

.65

.58

.69

.67

fid

.54

.55

.52

.51 

.51

.50

.50

.50

.50

.50

.42

.40 

.40

1

Oct.

O AA

.42

.42

.42

.41

.41

.41

.40

.45

.41

.42

.52 

.53

.63

.60

.54

.43

.50

.61

Nov.

0.52

.41

.44

.60

.55

.54

.49

.44

.69

.72

.61

.58

.51 

.51

.51

.54

.46

.45

.45

.57 

.55

.47

Dec.

0.47

.48

.52

.52

.50

4Q

.44

.43

.42

.44

.48

.53

.49

.45 

.54

.62 

.51

.64

.67

.53

1.10

.50 

.50

a Channel dry.

Daily discharge, in second-feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1..... .......

2............

3............

4............

5............

6............ 

7............

8............ 

9............

10............

Oct.

......

"ofse"

.24

Nov.

0.10

.14

.18

.24

.32

.40 

.60

.65

.52

D

0

ec.

a

a

a

a

a

3

3.01

Day.

11............

12............

13............

14............

15............

16............ 

17............

18............

19............

20............

Oct.

0.18

.12

.05

.01

.02

.05 

.06

.08 

.10

.10

Nov.

0.20

.12

.56

.28

.24

.24 

.32

.40

.44

.52

Dec.

0.01

.20

.60

1.10

3.38

1.00 

1.22

1.05 

1.22

1.22

Day.

21............

22............

23............

24............

25............

26............ 

27............

28............ 

29............

30............

31............

Oct.

o.io

.10

.10

.10

.10

.10 

.02

.02 

.02

.02

.02

Nov.

0.44

.40

.36

.32

.28

.03 

.01

.01 

.01

.01

Dec.

0.40

.28

.20

.40

.10

.10 

.05

.05 

.10

.10

.10

Channel dry.
ISLAND OF HAW AH. 311

Daily discharge, in second-feet, at station No. 56 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2............... 

3...............

4............... 

5...............

6. ............. .

7...............

8...............

9...............

10...............

11...............

12............... 

13...............

14...............

15...............

16...............

17...............

18. .............. 

19...............

20...............

21............... 

223"!"!""!!!!- 

24............... 

25. ..............

26............... 

27. .............. 

28. ..............

29............... 

30............... 

31...............

Jan.

.......

0.10

.......

F

?

f

0

1 

5

7 

1

eb.

a)

a)

a)

a

a

a

a

"1

a)

a)

« )

a)

3

.40

.20 

.00 

.50 

.50 

.50

.20 

.10 

.10 

.10

Mar.

0.20

.30 

.30

.20 

.20

.10

7.30

4.00

40

.20

.70

.60 

1.60

2.20

1.60

1.00

.40

2.50 

.60

.70

.30 

.20 

.40 

.40 

.40

.30

.20 

.10 

.10 

.20

3

KA

Apr.

1.50

1.00

.70

.60

.50

.50

4.00

3.00

2.50

.60

.50

.30

.40

.20

.30

.40

.60

.40 

.50

.20

.60 

.60 

.50 

.60

.80

1.00 

.80 

.60 

.50 

.40

May.

.......

"LSO"

.40

.20

.10

.......

""."io"

June.

.......

.......

.......

.......

0.20 

.50 

.20

July.

0.20

.20 

.60

.50

.40

30

.20

.20

.10

.10

1.00

.50 

on

.60

.50

.50

.40

.30 

.10

.10

.10 

.10 

.20 

.20 

.20

.20 

.20 

.10 

.10 

.10 

.10

Aug.

0.10

.10 

2.60

.50

.40

.20

.10

.10

.10

.40

.30

.30 

.30

.20

.60

.20

.10

.20 

.30

.20

.10 

.10 

.10 

.10 

.10

.10 

.20 

.20 

.10 

.10 

.10

Sept.

1.00

2.00 

3.00

5.00 

.40

.60

.70

.50

.40

.30

.20

.60

.50

.60

.10

.10

.10

.10 

.10

.10

.10

.10 

.10 

.10 

.10

.10 

.10 

.10 

.10 

.20

Oct.

.......

.......

"o.'io"

.30

'"."26"

""."io"

""."26"

Nov.

.......

0.20

.10 

.10

.60

.70

.20

.20

""."io" 

""."io"

.10

Dec.

......

0.10

""."io

.30

"".'46 

""."so

.10 

2.90

o Channel dry.

NOTE. Daily discharge determined from poorly denned rating curve. Discharge for days for which 

gage_ heights are missing estimated by means of rainMl diagram prepared from rainMl record at camp near 

station No. 50.

Monthly discharge at station No. 56 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

D ecember ....................

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

0.09

.29

.42

.05

.57

1.01

JJ4

.30

Kun-off 

(total in 

acre-feet).

4.11

17.30

25.60

3.07

32.80

62.10

50.00

18.40

Month.

1912 Continued.

July..........................

August .......................

September. ...................

Mean 

discharge 

in secondfeet.

0.15

.28

.28

.58 

.50

.40

.40

44

Kun-off 

(total in 

acre-feet).

8

00

17.20

17.20

34.50 

30.70

24.60

323.00

Discharge measurements at station No. 57 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20... ....................

Sept. 28. .....................

Gage 

height.

Feet. 

0.85

.75

Discharge.

Sec.-ft. 

0.05

0

Date.

Nov. 7.. ......................

Gage 

height.

Feet. 

0.88

QQ

Discharge.

Sec.-ft. 

0.12

.12

NOTE. Bed of stream of sand and silt; shifting. One channel at all stages.
312 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 57 at %,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, (Joorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

in

n...............

12...............

13............... 

14...............

15.. ....... ......

16...............

17...............

18...............

19

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

90

30...............

31...............

Jar

0.'

.(

.(

(a

(a

(a

(a

(n

(a

(n

(a

(n

}a

(a

(a

I.

rs

rs

rs

n

n

JO

m

w

iO

Feb.

00

00

(a)

00

(a)

00(a)

0.89 

.79

.74

.72

.71

on

.79

Mar.

0.80

.90

.86

.81

.80

on

91

Q<>

1.01

1.01 1.11

1.21

.77

1.21

.94

.97

01

.89

91

91

.88

.85

.79

.76

.83

Apr.

0.88

1.10

91

91

Qfi

.98

01

.91

89

.90

.91

97

01

<u

1 00

97

.98

1.07

.98

.96

May.

1.20

.81

.80

.76

.81

.78

.81

.78

.75

June.

0.70

.61

.64

""."75"

.77

.76

.81

95

.81

July.

 0.85

.93

.95

.88

.90

.82

1.02

.90 

.98

.84

.82

.81

.88

.88

.88

.81

.83

.81

.80

Aug.

0.80

1.20

.93

.91

.88

.82

.88

89

.84

""."89"

.92

.83

.90

.82

.81

.94

.90

.80

.84

Sept.

0.97

.95

1.00

.91

.88

.81

.91

.88 

.87

89

.87

.84

.82

.82

.83

.81

.80

.80

.78

.74

.72

Oct.

0.86

.84

.82

.82

.80

.80

CO

.81

.90

.86 

.90

.90

.93

.99

1.12

1.08

1.01

on

.90

1.00

Nov.

0.93

.88

.90

1.00

1.02

1.00 

.93

on

1.08

1.21

1.02

1.03

.95

.94

.93

OS

90

.90

.89

.98

.97

.91

Dec.

-

0.90

on

.90

.91

91

90

.88

.85

.82 

.85

.86

.91

.88 .88'

.95

1.18

.96

1.29

1.24

<u

1.20

.92

.90

a Channel dry.

Daily discharge, in second-feet, at station No. 57 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ........... 

2............ 

3............

3............ 

6............

7............

8............

9............

10............

Oct.

......

......

"6."25~

.28

Nov.

0.03 

.05 

.10

.11

.15 

.18

.40

.49 

.32

.20

Dec.

0.01 

.01 

.01

.01

.02 

.01

.03

*05

.10

.05

Day.

11............

12............ 

13............

14............

15............

16............

17............

18............

19............

20............

Oct.

0.20 

.13 

.10

.05

.05 

.05

.05

.05 

.05

.05

Nov.

0.12 

.05 

.25

.15

.15 

.15

.20

.25 

.32

.40

Dec.

0.05 

.22 

.61

1.08

2.40 

.35

.46

.35 

.46

.46

Day.

21............

22............ 

23............

24............

25............

26............

27............

28............ 

29............

30............

31............

Oct.

0.05 

.05 

.05

.05

.02 

.02

.02

.01 

.01

.01

.01

Nov.

0.40 

.40 

.40

.38

.38 

.05

.02

.05 

.05

.01

Dec.

0.13 

.10 

.10

.10

.05 

.05

.05

.05 

.05

.05

.05
ISLAND OF HAWAII. 313

Daily discharge, in second-feet, at station No. 57 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.... ...........

2...............

3...............

4...............

5...............

6...............

7. ..............

8...............

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

16...............

17...............

18...............

19...............

30...............

21............... 

22............... 

23............... 

24...............

25............... 

26...............

27.... ...........

28...............

29...............

30...............

31...............

Jan.

0.05

.05

.05

.05

.......

.......

Feb.

(«

(0

(«

(o

(a

(«

(a)

0.15 

.05

(a)

*rt

(a)

(a)

(a)

.20

.50 

1.00 

1.40 

.80

.15 

.10

.10

.10

ao

Mar.

0.05

.05

.15

.10

.05

.05

.15

.15

.15

.05

.45

.45

.75 

.05

.05

.05

.05

.05

25

.30

.15 

.15 

.15 

.15

.15 

.15

.10

.10

.10 

.10

.80

Apr.

0.30

.20

.15

.70

.15

.15

.90

.80

.70

.30

.35

.15

.15 

.15

.15

.15

.15

.15

.30

.15

.25 

.40 

.30 

.35

.60 

.90

<JE

.30

.20 

.10

May.

0.20

.30

.40

.60

1.00

.60

.30

.10

.05

.05

.05

.05

.05 

.05

.05

.05

.05

.05

.05

.05

.05 

.05 

.05 

.05

.05 

.05

.05

.05

.05 

.05

.05

June.

"6."05~

.05

.05

.05

25

.05

July.

0.10 .20-

.40

.30

.25

.15

.15

.10

.05

.05

..45 .30"

.15

.35

.20

.10

.05

.05

.05

.05

.05 

.05 

.05 

.20

.15 

.15

.15

.05

.05 

.05

.05

Aug.

0.05 .'05

1.00

.20

.15

.15

.15

.05

.15

.15

.10

.10

.10 

.15

.20

.10

.05

.10

.15

.10

.05 

.05 

.05 

.25

.15 

.05

.10

.10

.10 

.10

.10

Sept.

0.40

.50

.60

.70

.30

.25

.40

.15

.15

.10

.05

.15

.15 

.10

.15

.10

.10

.10

.05

.05

.05 

.10 

.05 

.05

.05 

.05

.05

.05

.05 

.10

Oct.

0.10

.10

.10

.10

.05

.05

.05

.05

.10

.10

.05

.15

.10 

.15

.15

.15

.50

.20

.35

.75

.70 

.65 

1.10 

.45

.15 

.15

1 40

1.00

.70 

.40

.20

Nov.

0.30

.20

1.00

.40

.20

.20

.15

.15

.40

.45

.40 

.20

.15

.65

1.00

.45

.50

.25

.25 

.20 

.35 

.20

.15 

.15

.15

.35

.30 

.15

Dec.

0.40

1.00

.30

.20

.15

.15

.15

.15

.15

.15

.15

.10

.05 

.10

.10

.15

.15

.15

.25

.95

.30 

1.35 

2.50 

1.15

.25 

1.00

.40

.20

.15 

.10

.10

a Channel dry.

NOTE. Daily discharge determined from poorly denned rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 57 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

Mav

Mean

discharge 

in secondfeet.

0.07

.21

.24

.02

.16

.24

qq

.15

Bun-ofl 

(total in 

acre-feet).

3.20

12.30

14.90

1.23

9.20

14.80

19 60

9.22

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.05

.15

.14

.17

.33

.32

.40

.21

Run-off 

(total in 

acre-feet).

2.98

9.22

8.61

10.10

20.30

19.00

24.60

149.00
314 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 58 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.)

Date.

Aug. 20. ......................

Sept. 28.......................

Gage 

height.

Feet. 

0.75

.60

Discharge.

Sec. feet. 

0.08

0

Date.

Nov.7........................

Dec. 11....... ....... .........

Gage 

height.

Feet. 

0.80

.76

Discharge.

Sec.-ft. 

0.16

.10

NOTE. Bed of stream of sand and silt; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2...............

5............... 

6...............

7...............

8...............

g

10...............

11............... 

12...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

22...............

24...............

25...............

26...............

28...............

OQ

30...............

31...............

Jan.

0.70 

.70

.70

.72

.62 

.62

.61

.61

.58

.55

(a) 

(a)

(a

(a

(a

(a

(a

(a)

(a )

(a)

(a)

Feb.

(a)

w

(a)

(a)

(a)

(a) 

(a)

0.74

.65

.60

.55

.51

.......

.81

.70

Mar.

0.85

.82

.81

.72 

.74

.83

.59

.81

.96 

.96

1.19

1.26

.92

1.25

.85 

1.01

.82

.80

.85

01

.82

.76

.72

69

.76

Apr.

0.82

1.02

.92 

.94

.89

.72 

.92

.91

.78

.78

01

.92

.88

.89

.96

Q7

1.01

1.19

1.11

1.09

May.

1.19

.80

"".78

.69

.68

.68

.71

.67

.60

June.

0.50

.48

.50

.......

.60

.68

""."76"

.78

.88

.78

July.

0.72

.83

.88

.77

.80

.78

.99

.93

.89

.82

.72 

.71

.80

.80

7Q

.73

.78

.75

.70

Aug.

0.69

1.25

.87

.82

.79

.74

.80

.81

""75"

.80

.85

.74

.80

.72

.70

.70

.68

.74

Sept.

.90

1.02

.84

.81

.78 

.90

.86

.83

.80

.81

.80

.79

.75

.74

.74

.72

.70

.66

.64

.61

.60

Oct.

0.78

.78

.74 

.74

.72

.70

.71

.70

.82

.78

.82

.80

.86

.91 

1.10

1.04

.98

.83

.78

1.03

Nov.

*

0.92

.83

.83

1.02

"i.'oi"

1.00

.90

.84

1.14

1.26

.88

1.02 

.95

04

.93

1.00

.88

.85

.84

.98

.98

.89

Dec.

0.88

.83

.85

.90

.90

.89

.86 

.82

.80

.82

.86

.91

.84

.80

1.00 

1.22

.92

1.36

1.22

on

1.19

.88

.89

a Channel dry.

Daily discharge, in second-feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

i. ......:...

2........... 

3. .......... 

4...........

5...........

6........... 

7........... 

8...........

9...........

10...........

Oct.

......

o.'eo

.42

Nov.

0.05

.05 

.10 

.15

.22

.30 

.78 

1.04 

.66

.36

Dec.

0.05

.03 

.03 

.02

.03

.03 

.02 

.05 

.10

.05

Day.

11...........

12........... 

13........... 

14...........

15...........

16........... 

17........... 

18........... 

19...........

20...........

Oct.

0.28

.20 

.12 

.10

.10

.10 

.10 

.10 

.10

.05

Nov.

0.20

.10 

.42 

.25

.25

.28 

.30 

.36

.60

.78

Dec.

0.03

.28 

1.04 

2.02

6.22

1.74 

1.95 

1.88 

1.95

1.95

Day.

21...........

22........... 

23........... 

24...........

25....... ...

26........... 

27........... 

28........... 

29...........

30........... <M

Oct.

0.05

.05 

.05 

.05

.05

.05 

.05 

.05 

.02

.02 

.01

Nov.

0.66

.54 

.48 

.42

.30

.25 

.10 

.10 

.05

.05

Dec.

0.84

.60 

.42

.54

.36

.30 

.30 

.30 

.36

.30 

.30
ISLAND Otf HAWAH. 315

Daily discharge, in second-feet, at station No. 58 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2...............

3...............

4...............

5............... 

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13............... 

14...............

16.....'..........

16...............

17...............

18............... 

19...............

20...............

21...............

22...............

23............... 

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.05 

.05

.05

.10

-------

Feb.

(«

a

a

a

a) 

a)

a)

a\ 

a)

°)

(«)

(a)

0.15 

.05

.05

.05

.05

.05 

.05

.30

1.00

3.00

4.00 

2.00

.85

.05

.05

.05

.05

Mar.

0.20

.60

.40

.35

.10 

.15

.50

.40

.40

.35

1.30

1.30

3.00 

3.60

1.50

1.20

1.05

3.50 

.60

1.65

.40

.30

.60

.40

.35

.40

.20

.10

.05

.20

3.50

Apr.

0.90

.60

.40

1.75

1.05 

1.20

4.00

2.50

1.00

.85

.10

1.05

.95 

.25

.25

.40

.60

.95 

1.05

.80

.85

1.30

1.40 

1.65

2.00

3.00

2.40

2.25

1.00

1.00

May.

1.50

1.50

1.50

2.00

3.00 

2.80

2.00

1 00

.50

30

in

.25

.20 

.15

.10

.05

.05

.05 

.05

.05

.05

.05

.05 

.05

.05

.05

.05

.05

.05

.05

.05

June.

.......

.......

0.05

.......

.05

.......

.25

.80

.25

July.

0.10

.50

1.00

.90

.80 

.20

.30in

.25

.30

1.55

1.30

1.10

.85

.50

.50

.40

.30 

.10

.05

.10

.15

.20 

.25

.30

.30

.25

.10

.25

.15

.05

Aug.

0.05

.05

3.50

.70

.40 

.30

.251 «;

.30

.35

.25

.15

.20 

.30

.60

.10

.15

.20 

.30

.10

.10

.10

.05 

.05

.05

.15

.20

.15

.10

.10

.10

Sept.

1.00

2.00

3.00

4.00

.95 

.90

1.75

11

.35

.30

.25

.90

.65 

.50

.30

.35

.30

.25 

.15

.15

.15

.15

.10 

.05

.05

.05

.05

.05

.05

.15

Oct.

0.30

.25

.25

.25

.15

.15

.10

.05

.05

.05

.05

.40

.25 

.40

.40

.30

1.00

.65 

.95

2.30

2.10

1.90

3.50 

1.45

.50

.25

4.50

4.00

3.00

1.80

1.50

Nov.

1.20

1.00

1.00

1.00

1.05 

.80

.50

.50

1.75

4.00

3.00

1.65

1.60 

.90

.55

2.60

3.60

.80 

.75

.25

.20

.10

.60 

.20

.80

.60

.55

1.45

1.43

.85

Dec.

1.00

3.00

.80

.80

.80 

.50

.60

.90

.90

.85

.65

.40

.30 

.40

.65

.95

.55

.30 

1.60

3.25

1.05

4.40

4.00 

3.25

.90

3.00

.80

.85

.70

.50

.50

a Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 58 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

March........................

April.........................

May.........................

Mean 

discharge 

in secondfeet.

0.12 

.34

.78

.02 

.41 

.92 

1.25 

.58

Run-off 

(total in 

acre-feet).

5.40 

20.20

47.90

1.23 

23.60 

56.60 

74.40 

35.70

Month.

1913 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.05 

.43 

.31 

.65 

1.06 

1.38 

1.26

.69

Run-off 

(total in 

acre-feet).

2.98 

26.40 

19.10 

38.70 

65.20 

82.10 

77.50

504.00

Discharge measurements at station No. 59 at 2,700-foot level, near Hilo, Hawaii, in 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20.. .....................

Gage 

height.

Feet. 

0.71

.58

Discharge.

Sec.-ft. 

0.14

0

Date.

Dec. 11. ......................

Gage 

height.

Feet. 

0.74

.74

Discharge.

Sec.-ft. 

0.98

.43

NOTE. Bed of stream sand, gravel, and small cobbles; shifting. One channel at ail stages.
316 WATEB BESOUECES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 59 at %,700-foot level, near Hilo, Hawaii, for 191%. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

3...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

16...............

17...............

18............ ..

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

2^.. .............

2)...............

33.......... .

31...............

Jan.

0.62

.62

.62

.64

.62

.62

.60 

.60

.54

.49

.48

.45

.45

.44

.42

.42

.41

.41

.42

.38

(a)

(a)

Feb.

(a)

(a)

(«)

(«)

(a)

(a)

(a)

0.72 

.60

.50

.46

.41

.85

.71

Mar.

0.86

.80

.72

.72

.68

.75

.81

.78

.82

.91

1.06 

1.19

.84

1.21

.81

.79

.92

.73

.77

.80

.79

.76

.69

66

.72

Apr.

0.79

.98

.88

.88

.86

.88

.85

.84 

.90

.93

.84

.85

.88

.94

90

.90

1.05

1.22

1.16

1.15

May.

1.16

.78

.66

.68

.55

.61

.62

.57

.55

June.

0.51

4Q

.50

"'.~60'

.63

.69

.78

.88

.78

July.

0.70

.81

.85

.71

.78

.72

.99

.80 

.90

.88

.70

.69

.76

.74

.62

.70

.71

.68

.64

Aug.

0.61

1.25

.82

.81

.74

.70

.72

.76

.71

""."76"

.83

.70

.79

.68

.64

.64

.62

.60

.70

Sept.

0.90

.87

1.00

.81

.80

.75

.84

.79 

.81

.72

.79

.75

.71

.70

.69

.70

.65

.64

.61

.60

.59

.59

Oct.

0.72

.71

.68

.68

.64

.62

.67

.64

.75

.72 

.76

.74

.83

.89

1.02

.99

.95

.82

.80

.98

Nov.

0.83

.74

.75

.96

.92

.91.

.82

.77

1.06

1.28

.92

.95

.87

.84

.83

.90

.78

.75

.72

.88

.87

.77

Dec.

0.93

.75

.78

.83

.80

.78

.73

.70

.69 

.70

.71

.82

.76

.70

.82

.95

.84

1.08

.81

.87

.86

.82

.81

a Channel dry.

Daily discharge, in second-feet, at station No. 59 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ..........

2........... 

3........... 

4...........

5...........

6...........

7...........

8...........

9........... 

10...........

Oct.

'...'.'.

"i."32"

Nov.

0.05

.11 

.18 

.36 

.56

.84

1.53

2.70

1.66 

.92

Dec.

0.11

.11 

.05 

.10 

.10

.10

.10

.17

.20 

.17

Day.

11...........

12........... 

13........... 

14........... 

15...........

16...........

17...........

18...........

19... ....... 

20...........

Oct.

0.92

.60 

.44 

.28 

.28

.24

.24

.20

.20 

.17

Nov.

0.48

.20 

1.08 

.60 

.60

.60

.76

1.00

1.24 

1.53

Dec.

0.12

.40 

1.00 

2.05 

10.20

2.57

2.96

1.92

2.96 

2.96

Day.

91

22........... 

23........... 

24........... 

25...........

26...........

27...........

28...........

29........... 

30........... 

31...........

Oct.

0.12

.11 

.10 

.10 

.05

.05

.05

.05

.05 

.05 

.05

Nov.

1.32

1.24 

1.16

1.08 

1.00

.36

.28

.24

.17 

.12

Dec.

1.24

1.08 

1.08 

.76 

.60

.56

.52

.52

.76 

.68 

.60
ISLAND OF HAWAII. 317

Daily discharge, in second-feet, at station No. 59 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...... .........

2...............

3...............

4...............

5..............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18............... 

19............... 

20...............

21...............

22............... 

23............... 

24............... 

25...............

26...............

27... ............

38...............

29...............

30...............

31...............

Jan.

0.10

.10

.10

.10

.10

.10

.05

.05

.......

Feb.

a

a

a

a

(a

(a

(°

(a

(a

(a

(a)

(a)

0.30

.05

.05

.05

.05

.05 

.05 

.20

2.00

5.00 

6.00 

3.00 

1 nn

.25

.10

.10

.10

Mar.

0.60

1.10

.60

.30

.30

.20

.40

.50

.70

.50

.80

1.55

3.50

5.20

3.00

1.50

.90

5.45 

.70 

.55

1.65

.30 

.50 

.50 

.60

.55

.45

.20

.15

.30

2.50

Apr.

1.00

.80

.55

2.40

1.25

1.25

4.00

3.00

2.50

1.10

1.25

1.00

.90

1.40

1.80

1.50

2 20

.90 

1.00 

1.25

1.90

1.40 

1.40 

3.35 

4.40

5.60

4.80

4.65

3.00

2.00

May.

2.00

2.00

3.00

4.00

A en

3.50

2.00

1.00

.80

.50

.30

.15

.15

.20

.20

.20

.10

.05 

.05 

.05

.10

.10 

.10 

.10 

.10

.05

.05

.05

.05

.05

AC

June.

6.05

.10

"""."20"

.......

.50

1.25

.50

July.

0.20

.70

2.50

1.50

1.00

.25

.50

.40

.30

30

2.60

1.60

.60

1.40

1.30

1.30

1.25

.60 

.20 

.20

.20

.30 

.30

.40 

.45

.35

.10

.20

.25

.15

.10

Aug.

0.10

.05

6.00

.75

.70

.40

.35

.20

.30

.45

.40

.25

.40

.45

.85

.30

.20

.40 

.55 

.90

.20

.10 

.10 

.10 

.10

.05

.20

.20

.10

.10

.10

Sept.

0.80

1.00

2.50

4.00

1 4rt

1.15

2.70

.70

.60

.50

.40

.90

.55

.70

.30

.55

.40

.25 

.20

.20

.20

.20 

.10 

-10 

.10

.05

.05

.05n*>

.20

Oct.

0.20

.30

.30

.25

.15

.15

.10

.10

.10

.15

.10

.40

.30

.45

.40

.35

1.30

.85 

1.30 

2.95

2.80

2.60 

3.00 

2.05 

.75

.60

6.00

4.00

4.00

2.45

2.00

Nov.

2.00

2.50

3.00

1.00

.85

.35

.40

2.20

5.00

2.50

1.65

1.55

.75

.50

3.50

6.40

1.65 

2.05 

1.15

.90

.85 

1.40 

1.00 

.50

.40

.30

1.25

1.15

.50

Dec.

2.00

3.00

2.00

2.00

1.80

.40

.50

.85

.60

.50

.30

.20

.20

.20

.25

.75

.45

.20 

.75 

2.05

.90

3-15 

5.00 

.70 

1.15

1.10

.90

.75

.70

.50

.50

a Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 59 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

0.26

.77

1.18

.05

.63

I

ns

2.12

QQ

Run-off 

(total in 

acre-leet).

11.20

45.40

72.70

3.07

36.20

71.30

126.00

51.00

Month.

1912 Continued.

July..........................

August . ....

Mean

discharge 

in secondfeet.

0.15

.69

.48

.70

1.30

1.58

1.13

.90

Run-off 

(total in 

acre-feet).

8.93

42.40

29.50

41.70

79.90

94.00

69.50

654.00
318 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 60 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Sept. 28.. ....................

Gage 

height.

Feet. 

0.55

34

Discharge.

Sec.-ft. 

0.03

0

Date.

Dec. 11. .....................

Gage 

height.

Feet. 

0.56

.54

Discharge.

Sec.-ft. 

0.04

.03

NOTE. Bed of stream sand, gravel, and small cobbles; probably shifting. One channel at all stages.

Daily gage height, in feet, at station No. 60 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1.. .............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan

fl.'

,*

fo1

a]

a

°3

w

ft(°:

(a

a

a

ct

a

(a

ft(«'

'

.

W

k

L4

tf

Feb.

(«)

(»)

(a)

(a)

(a)

(«)

<»)

0.50

.45

.40

.32

f«)

.60

.52

Mar.

0.65

.68

, .66

.55

.61

.64

.62

.70

.70

.96

1.03

.......

1.05

.66

.70

.62

.61

.63

.64

.62

.61

.56

.53

.56

Apr.

0.66

.86

.66

fiO

.69

.68

.65

.66

.61

.60

.66

.66

.68

an

.75

.73

.81

.98

.89

.85

May.

0.93

.56

.51

.41

.39

.46

.51

.40

.39

June.

fl ^R

.35

.41

.51

.50

.58

.58

.70

.58

July.

0.51

.59

.62

.56

.55

.58

.71

.61

.69

.58

.56

.61

.67

.55

.51

.57

.54

.50

Aug.

0.48

.89

.66

.63

.59

.55

.50

60

.50

.60

.66

""."55"

.60

.51

.48

.48

.44

.40

.50

Sept.

0.66

.63

.71

.60

.58

.55

.61

.68

.60

.53

.61 

.55

.52

.50

.48

.48

.45

.42

.40

.38

.34

.34

Oct.

0.50

.54

.50

.50

.48

.46

48

.44

 .58

.47

.58

.58

.66

.66

.76

.72

.68

.59

60

.78

Nov.

0.62

.56

.60

.72

.70

.66

.60

.50

.75

.84

.71

.70

.65

64

.64

.68

.60

.59

.58

.69

.67

-.60

Dec.

0.49

.54

.58

.42

.60

.59

.56

.50

.48

.50

.52

.64 

.59

.52

.61

.75

.67

.85

.80

.64

.64

.61

.63

a Channel dry.

Daily discharge, in second-feet, at station No. 60 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ..........

2........... 

3........... 

4........... 

5...........

6........... 

7........... 

8...........

9........... 

10...........

Oct.

......

"o.'so"

Nov.

0.01

.01 

.05 

.10 

.10

.26 

.50 

.68 

.50 

.38

Dec.

0.01

.01 

.01 

.01 

.01

.01 

.01 

.01 

.05 

.01

Day.

11...........

12........... 

13........... 

14........... 

15...........

16........... 

17........... 

18........... 

19........... 

20...........

Oct.

0.14

.10 

.10 

.03 

.03

.03 

.03 

.05 

.05 

.03

Nov.

0.22

.10 

.30 

.22

.18

.14 

.14 

.14 

.50 

.98

Dec.

0.01

.14 

.74 

1.66 

6.02

2.50 

2.90 

2.50 

2.90 

2.90

Day.

21...........

22........... 

23........... 

24........... 

25...........

26........... 

27........... 

28........... 

29...........

30...........

Of

Oct.

0.01

.01 

.01 

.01 

.01

.01 

.01 

.01 

.01 

.01 

.01

Nov.

0.86

.80 

.74 

.68 

.62

.14 

.02 

.02 

.01 

.01

Dec.

1.66

1.52 

.62 

1.38 

1.04

.56 

.42 

.42 

.62 

.56

Kf\
ISLAND OF HAWAII. 319

Daily discharge, in second-feet, at station No. 60 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22............. .

23...............

24............

25...............

26...............

27...............

28...............

29............. .

30...............

31...............

Jan.

fg\

(<*)

(o)

(°)

(o)

\a)

(°)

'

(«)

(a)

a

a

a

a

(a)

(a)

^ '

Feb.

o\

>o\

,«)

a)

a)

a)

a\

^a\

0.1

Mar.

0.30

.30

Af\

.30

.10

.05

.10

.20

.30

.20

.50

.50

2.70

1.00

.50

.30

2,90

.30

CA

.20

.10

.20

.20

OA

.20

.10

.10

.10

.10

2.00

Apr.

0.80

.50

.30

1.50

.30

.50

2.50

9 nn

1.50

.50

.40

.30

OA

.10

.10

.20

.40

30

.30

40

.50

.80

.70

1.20

1 QA

2.40

1.70

.80

on

May.

O Art

.10

June.

0.10

.10

CA

.10

July.

0.10

.10

.30

.20

.20

.10

.05

.10

.10

.10

60

.30

.10

Crt

.40

aft

.30

.20

.10

.10

.10

.10

.10

.10

.10

.40

.05

.10

.10

.10

.10

Aug.

0.10

.10

1.70

.30

.20

.10

.10

.05

.10

.10

.10

.10

.10

.10

.30

.05

.05

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

Sept.

0.80

1 00

1 5ft

OA

.20

60

.10

.10

.10

.05

.10

40

.10

.10

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

Oct.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.70

on

.30

QA

1.10

.60

1.50

.40

.10

.10

S

on

2.00

2.00

1.00

.70

Nov.

1.00

1.00

o Art

1.00

.10

.10

.10

.60

O CA

O Aft

.50

.30

.10

.10

.80

1.40

60

.50

OA

.30

.30

40

.20

.10

.10

.10

.50

.40

.10

Dec.

0.70

1.00

en

.20

.10

.10

.10

.20

.10

.10

.10

.10

.10

.10

.10

.30

.10

.10

.10

QA

.40

1.40

3.00

1.10

30

.30

.20

.10

.20

.10

.10

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well denned except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 60 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October 10-31. ................

1912.

AprU. ....... .................

Mean 

discharge 

in secondfeet.

0.05

.31

1.02

.01

.05

.83

.20

Run-oft 

(total in 

acre-feet).

1.98

18.70

62.90

.61

2.88

34 40

49.40

12.30

Month.

1912 Continued.

July..........................

The year. ..............

Mean 

discharge 

in secondfeet.

0.10

.18

.16

«>O

.54

.59

.39

.32

Run-off 

(total in 

acre-feet).

5.95

11.10

9.84

16.70

33.20

35.10

24.00

235.00

Discharge measurements at station No. 61 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20............ ...........

Sept. 21.......... .............

Gage 

height.

Feet. 

0.33

.20

Discharge.

Sec.-ft 

0

Date.

Nov.7... .....................

Dec. 11. ......................

height.

Feet. 

0.21

.24

Discharge.

Sec.-ft. 

0.01

.01

NOTE. Bed of stream of silt and sand; shifting. One channel at all stages.
320 WATEK KESOUBCES OF HAW AH, 1912.

Daily gage height, in feet, at station No. 61 at 2,700-foot level, near Hilo, Hawaii, for

1912.

[Bomin, Biltkov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

\. ....... .......

2............... 

3...............

4...............

5............... 

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13............... 

14............... 

15...............

16...............

17.... ............

18.. ...... .......

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27............... 

28............... 

29...............

30...............

31...............

Jan.

.......

0.35 

.35

.35

.38

(0)

.......

(0)

.......

Feb.

(«)

(0)

0.46 

.40 

.30

(0)

40

.33

Mar.

6.42 

.40

.62

.35 

^i

.35

40

40

.48

.46

.79 

.79

.43

.81

.43

.46

11

.52

11

.41

.40

.38 

.30 

30

.47

Apr.

"6." 44"

so

.58 

60

v\

11

40

.48 

.40 

.46

.46

.52

.53

17

.49

.47

60

.76

1.06 

1.03

May.

.......

1.25

.82

«1

.35

.31

.30

01

^ft

""."28"

June.

0.30

.28

.29

""."46"

df\

.28

.31

.41 

.31

July.

0.35

.47

.50 

so

4n

OQ

41

.39 

.41

.42

34

.32

v>

.35

.26 

.31 

.35

.28

.21

Aug.

0.30 

.60

43

.42

38

.35

07

.38

.36

"""37" 

.40

.33

.39

.31

.30

30

.29

.28

.31

Sept.

.......

0.42 

.41

.50

.40 v>

 >4

OQ

.39 

.40 

.35

.38

.35

.32

.30

.29

.29

.28

.24

.22

.22 

.21 

.21

Oct.

0.30

39

.35

.28

.28

.26

.36

34

34

.32 

.34

.34

.38

.40

.50

.48

.44

.36

.40

.51

Nov.

.......

0.35

91

.22

.41

40

.45 

.28 

.24

.44

.55

.44

.39

.30

.30

.29

.34

.25

.25

.24 

.38 

.34

.27

Dec.

0.24

99

99

.28

.28

OA

.2201

.20 

.21 

.82

.29

.22

.20

.30

.46

.40

.53

.61

.40

.50

""."SO 

.32

o Channel dry. 

Monthly discharge at station No. 61 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.... .....................

May...... ....................

Mean 

discharge 

in secondfeet.

oQ.06

o.OS

o.l5

0.000

.005

.17

v>

.08

Run-off 

(total in 

acre-feet).

3.69

4.76

9.22

.00

.30

10.70

18.80

4.90

Month.

1912 Continued.

July..........................

The year.. .............

Mean 

discharge 

in secondfeet.

0 07

.10

.10

.12

.16

.15

.11

.12

Run-off 

(total in 

acre-feet).

4.00

6.00

6.10

6 on

9.90

8.90

6.90

83.40

o Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near station No. 50.
ISLAND OP HAWAII. 321

 e measurements at station No. 62 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.J

Date.

Aug. 20. ......................

Sept. 28... ...................

Gage 

height.

Feet. 

1.19

R4

Discharge.

See.-fi. 

3.25

.47

Date.

Nov.7.. ....... ...............

Gage 

height.

Feet. 

1.25

.1.23

Discharge.

Sec.-ft. 

4.66

3.64

NOTE. Bed of stream of cobbles and bowlders. Some bedrock exposed. Section rough near gage; 

station probably permanent. One channel at all stages.

Daily gage height, in feet, at station No. 62 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9............... 10...............

11...............

12...............

13............... 

14. ..............

15...............

16...............

17...............

18...............

19............... 

20

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28............... 

29............... 

30...............

31...............

Jan.

1.02

1.02

1.02

1.05

.94

Q4

.92 

.92

.85

.80

.75 

.74

.74

.72

.71

.71

.70

.70

.71

.66 

.65 

.65

Feb.

(»)

(»)

(a)

(a)

(a)

(a)

(a)

1.15 

1.10

.90

.......

1.50

1.30

.......

Mar.

I

KK

1 4fl

1.25

1.08

l 1>?

1.21

1.46

1.40

1.41

1 79

1.87 

1.99

1.76

1 Qfi

1.49

L86

1 45

1.41

1.47

1.36

1.30

1.15

1.13 

1.11

1 10

Apr.

1.51

1.58

1.50

1.47

1.85

1.75

1.59

1.52 

1.35

1.29

1.39

1.40 

L41

1.42

1.64

1.62

1 71

1.70

1.66

1.68

May.

1.84

1 4fl

1.12

.98

on

L02

L 14

.99

.95

June.

n on

89

. .88

Q1

.92

"i."6i"

L58

1.70

1.58

July.

1.28

1.37

1.40

1.28

1.31

1.20

1.94

1.33

1.68

1.67

i.i5

1.14

1 91

1.19

1

OK

1.17 

1.15 

1.08

1.01

Aug.

0.92

2.60

1.55

1.35

1.18

1.14

1.18

1.21

1.14 "L'so"

1.57

1.15

1.36

1.09

i.66

1.04

L02

.96

L35

Sept.

1 60

1.61

2.01

1.41

1.33

1.25

1.46

1.28 

1 25

1.23

1.34

1.20

1.18

1.10

1.01

1.05

1.00

OS

.91

.87

.84 

.81

Oct.

1.11

1.20

1.10

1.08

1.02

1.00

1.14

1.10

1.42

1.20 

1.36

1.34

1.62

1.72 

2.32

1.86

1.92

1.34

L21

"i'ie"

Nov.

1.54

1.25

1.30

1.82

1.78

1.80 

1.43

L29

2.14

2.72

1.80

1.87 

1.49

1.46

1.50

1.56

L32

1.26

1.21

1.48 

1.66 

1.30

Dec.

1.35

1.30

1.40

1.60

1.45

1.30

1.16

1.16

1.10 

1.11

1.30

1.50

1.40

1.20

1.50 

2.15

1.62

2.42

2.82

1.80

2.40

1.36 

1.32

a Channel dry.

Daily discharge, in second-feet, at station No. 62 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1.. .......... 

2............

3............

4............ 

5............

6............

8............

9............ 

10............

Oct.

......

------

is-'eo"

Nov.

1.38 

2.62

7.80 

12.00

16.80

26.20

40.60

28.00 

18.00

Dec.

1.38 

1.38

1.20

1.20 

1.20

1.29

1.38

2.23

3.40 

2.23

Day.

11............ 

12............ l<l

14............ 

15............

16............

17............

18............

19............ 

20............

Oct.

10.20 

7.20

5.00

3.40 

3.40

3.60

3.60

3.80

3.80 

3.01

Nov.

10.20 

4.40

12.80

11.30 

9.84

8.40

11.30

14.00

19.60 

26.20

Dec.

1.92

7.80

19.20

35.80 

85.00

34.00

46.00

35.80

47.80 

48.40

Day.

21............ 

22............

23............

24............ 

25............

26............

27............

28............

29............ 

30............

31............

Oct.

2.36 

2.10

1.92

1.74 

1.56

1.38

1.20

1.05

.90

.80

.70

Nov.

24.50 

23.00

22.00

21.00 

20.00

12 00

9.12

3.40

2.62 

1.38

Dec.

22.50 

3.40

3.40

22.50 

12.80

8.40

5.40

5.00

12.80 

12.40

12.00

14694° WSP 336 14
322 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 62 at 2,1/00-foot, level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.40 

1.40 

1.40 

1.40 

1.40

1.40 

1.40 

1.60 

1.40 

1.20

.90 

.90 

.80 

.80 

.50

.35 

.30 

.30 

.25 

.25

.25 

.20 

.15 

.15 

.15

.15 

.15 

.10 

.10 

.10

.10

Feb.

(«

° 

(°

(° 

(°

(°

a 

a 

a 

a

£2. 

2.

ML

40. 

80. 

90. 

50. 

12.

5. 

4.

4. 

4.

)

1

75 

10 

70

10 

10 

10 

10 

00

00 

00 

00 

00 

00

40 

00 

00 

00

Mar.

6.00 

12.00 

8.40 

4.40 

1.90

2.75 

3.60 

7.00 

11.00 

8.40

8.80 

24.00 

29.00 

36.00 

30.00

26.00 

23.00 

35.00 

11.60 

29.00

10.00 

8.80 

11.00 

9.00 

7.20

5.40 

2.75 

2.50 

2.20 

3.30 

36:00

Apr.

20.00 

15.00 

12.00 

12.00 

12.00

11.00 

60.00 

50.00 

40.00 

28.00

22.00 

16.00 ia oo

6.90 

5.20

8.00 

12.00 

8.10 

8.40

a 80

9.10 

18.00 

17.00 

20.00 

20.00

20.00 

18.00 

19.00 

15.00 

18.00

May.

19.00 

19.00 

19.00 

20.00 

27.00

22.00 

15.00 

12.00 

10.00 a40

5.40 

2.40 

2,00 

1.60 

1.40

1.10 

1.00 

.70 

1.00 

1.00

1.00 

1.40 

4.00 

2.60 

2.00

1.15 

1.00 

.95 

.90 

.80 

.70

June.

0.70 

.70 

.70 

.70 

.70

.65 

.65

.65 

.70 

.70

.70 

.70 

.70 

.75 

.80

.80 

.90 

1.00 

1.20 

1.30

1.60 

2.00 

2.00

aoo

6.00

12.00 

20.00 

15.00 

12.00 

9.00

July.

3.60 

7.50 

15.00 

11.00 a40

5.00 

5.70 

4.50 

3.40

a 40

33.00 

15.00 

6.30 

19.00 

14.00

12.00 

19.00 

10.00

2.75 

2.60

aoo

3.00

aoo 

aoo

3.60

3.30 

4.40

aoo

2.75 

1.90 

1.30

Aug.

1.00 

.80 

73.00 

14.00 

6.50

5.00

a 15

2.60 

3.10

aeo 

a 10

2.60 

4.50 

5.40 

15.00

aoo

2.75 

5.00 

7.20 

3.00

2.00 

1.60 

1.20 

1.60 

1.40

1.00 

6.90 

6.00 

5.00 

4.00 

5.00

Sept.

25.00 

30.00 

50.00 

85.00 

16.00

moo

38.00 

8.80 

6.30 

5.40

4.40 

11.00 

5.00 

4.40 

4.00

6.60 

3.40

a 10

2.10 

1.70

1.30 

1.65 

1.20 

1.10 

.90

.75 

.60 

.50 

.40 

5.00

Oct.

3.00 

2.20 

3.00 

3.40 

2.10

1.90 

1.40 

1.20 

1.00 

2.60

2.10 

9.10 

3.40 

7.20 

7.00

6.60 

35.00 

17.00 

21.00 

56.00

60.00 

29.00 

85.00 

32.00 

6.60

3.60 

90.00 

60.00 

50.00 

47.00 

48.00

Nov.

50.00 

60.00 

40.00 

70.00 

14.00

10.00 

4.40 

5.40 

26.00 

60.00

50.00 

24.00 

25.00 

9.50 

5.20

45.00 

80.00 

25.00 

29.00 

12.00

11.00 

12.00 

14.00 

10.00 

6.00

4.60 

3.60 

11.00 iaoo

5.40

Dec.

25.00 

40.00 

15.00 iaoo

6.90

5.40 

8.40 

16.00 

10.00 

5.40

2.90 

2.90 

2.10 

2.25 

5.40

12.00 

8.40

a 40

12.00 

46.00

17.00 

62.00 

90.00 

86.00 

25.00

61.00 

30.00 

7.20

aoo

5.00 

5.00

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 62 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

October 10-31.................

1912.

AprQ........ .................

Mean 

discharge 

in secondfeet.

3.46

H.20

16.10

.68

10.50

13.40

18.10

Run-off 

(total in 

acre-feet).

152

847

895

41.80

604 00

824.00

1 080 00 ?

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

6.63

3.28

7.53

6.45

11.30

22.50

17.30

20.70

11.50

Run-off 

(total in 

acre-feet).

408.00

195.00

463.00

397.00

ft*79 ftf\

1,380.00

1,030.00

1,270.00

8,360.00

Discharge measurements at station No. 63 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20.. .....................

Sept. 28.. ....................

Gage 

height.

Feet. 

0.45

.40

Discharge.

Sec.-ft. 

0.05

0

Date.

Nov. 7.. ......................

Dec. 11.......................

Gage 

height.

Feet. 

0.47

.48

Discharge.

Sec.-ft. 

0.10

.03

NOTE. Bed of stream of sand aud silt; shifting. One channel at all stages.
ISLAND OF HAWAII. 323

Daily gage height, in feet, at station No. 63 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2

5...............

6. .............. 

7...............

9

10...............

11...............

12

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20............... 

21...............

99

24...............

25...............

26...............

27............... 

28...............

29...............

30...............

31...............

Jan.

0.51

.51 

.51

.52

.48

.48

.48

.50

.50

.50

.50 

.50

.48

.46

.46

.45

.45

.45 

.42

.40

.40

Feb.

0.40

.40

.40

.40

.40

.40

.40

.52

.49

.42

.41

.40

.52 

.48

.......

Mar.

0.61

.52

.51

.48

.45 

48

.56

.55

.54

.52

.69

.84

.52

01

.53

.55

.51

.48

.52

CO

.51

.49 

.44

.42

.49

Apr.

0.50

.74

.54

.55

.55

.54

.57

.54

.51

.51

.51

.59

.65

.64

.71

.71

.80

.92

.88 

.85

May.

1.02

.55

.50

.45

.43

.......

dc

.47

.48

""."45"

June.

0.40

.30

.37

.40

.32

.40

.41

.55 

.41

July.

0.42

.53

.58

.45 

.50

49

.60

.50

.55

KA

.48

.46

CA

.50

.50

4Q

.52

.50

4S

Aug.

0.45

.53

.57 

""."56"

.58

.50

.51

4Q

.50

.53

4S

.50

.44

.45

.47

AK

.42

.48

Sept.

0.51

.54 

.61

.50

.49

.44

.50

.50

.54

.51

.51

4Q

.48

.46

.44

4ft

.42

.42

.42 

.41

.41

Oct.

0.46

.48

.46

.43

.42

.44

.47

.43

.48

.46

.50

.49

.52

.57

.60

.58

.54

.48

.47

.59

Nov.

0.52

.......

.50

.62

.54

.55

.50

.48

.62

.64

.56

.55

.52 

.52

CO

.58

.50

.50

.48

.55

.50

Dec.

0.50

.42 

.59

. .52

.51

.49

.46

.44

.44

.44

.50

.56

40

.48

.50

.60 

.50

.65

.51

.60

"".50

.52

Monthly discharge at station No. 63 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

. 1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

o0.04

a. 10

a. 12

.002

.003

.01

.01

.006

Run-off 

(total in 

acre-feet).

2.46

5.95

7.38

.10

.20

on

on

.40

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.005

.07

.08

no

.12

19

.10

.05

Run-off 

(total in 

acre-feet).

0.30

4 fift

5.00

5 Qft

7.50

6.90

6.10

a Estimated.

Nora;. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near station No. 50.

Discharge measurements at station No. 64 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20.......................

Sept. 28. .....................

Gage 

height.

Feet. 

0.58

.40

Discharge.

See.-ft. 

0.01

0

rate.

Nov. 7........................

Dec. 11. ......................

height.

Feet. 

0.08

.40

Discharge.

Sec.-ft. 

0.03

.03

NOTE. Bed of stream of sand and silt; shifting. One channel at all stages.
324 WATEE KESOURCES OP HAW AH, 1912.

Daily gage height, in feet, at station No. 64 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.)

Day.

1. ..............

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

U.... ...........

12............... 

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20............... 

21...............

99

231..............

24.... ........... 

25...............

26...............

27............... 

28...............

29...............

30...............

01

Jan.

0.34

.34 

.34

.45

.40 

.40 

.40

.40

.35

.25

.05

.05

.05 

.04

.02

.02 

.00

.00'

.00 

.00 

.00

.00

Feb.

0.00

.00

.00

.00

.00

.00

.00 

.50

.45

.42

.36

.34

.......

""."so"

.46

Mar.

0.58

.52

.44

.45

.45 

.51

.61

.50

.51

.53 

.64

.72

.51

.76

.51

.55

.51 

48

.52

"".51

.50

.48 

.46

A 1}

.42

Apr.

0.49

.69

.55

.60

.54

.53 

.52 

.52

.48

.48

.50

.52

.59

.61

.62

.62

.74

.94

.86 

.86

May.

1.05

.50 

""."46"

.32

.35

""."si"

.37

.31 '".'so'

June.

0.29

.20

9d

.......

.30

94

.40

.......

.41

.50 

.41

July.

0.40

.51

.55

.44 

49

.40

.52 

""."48"

.50

.30

.20

.19

.......

.41

.39 

.30 

.32

.25

.20

Aug.

0.41

.59

.58

49

.46

.50

.51 

""."49"

.50

.52

.48

.49

.44

49

.45 

.44

.32

.49

Sept.

0.49

.50

.48

.46

.43 

.49 

.48

.53

.50

.50

.46

.30

.20

.20 

in

.18

.09

.05

.03 

.02 

.02

Oct.

a si

.42

.32

.30

.28

11

.42

.40 

.48 

.46

.50

.49

.50

.50

.56

" " " " KA

.45 

.41

.42

.28

Nov.

0.12

10

.16

.31

""."27" 

.30

.14

.10

.57

.65

.40

.48

.36

.32 

.36

.44

9Q

.25

.23 

.47 

.48

.31

Dec.

0.44

.41dfi

.50

.50

.48

.39 

.31 

.30

.35

.40

.54

.50

.38

.45

.62

.50

.78

""."52

.70

""."57 

.54

Monthly discharge at station No. 64 at 2,700-foot level, near Hilo, Hawaii, for

Month.

1911.

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

aO.06 o.l6

003

.003

.20

.20

08

Run-off 

(total in 

acre-feet).

3.69

9.51

24 60

.20

.20

12.10

11.90

5.10

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.07

.06

.09

19

.16

.15

.13

.11

Run-off 

(total in 

acre-feet).

4.00

4.00

5.50

7.10

9.70

7.10

7.90

74.80

a Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50.
ISLAND OF HAWAII. 325

Discharge measurements at station No. 65 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20...... .................

Sept. 28. .....................

Gage 

height

Feet. 

1.56

1.39

Discharge.

Sec.-ft. 

0.18

0

Date.

Nov. 7... .....................

Dec. 11. ......................

Gage

Feet. 

1.54

1.54

Discharge.

Sec.-ft. 

0.19

.18

Bed of stream of sand, gravel and silt; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.}

Day.

1...............

2...............

5...............

6...............

7...............

8...............

9...............

10............... 

11...............

12...............

13................

14...............

15............... 

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24............... 

25...............

26...............

27............... 

28...............

29...............

30...............

31...............

Jan.

1.50

1.50

1.50

1.55

1.50

1.50

1.50

1.50

1.50 

1.50

1.50

1.50 

1.50

1.49

1.49

1.49 

1.48

1.48

1.49 

1.46 

1.45

1.45

Feb.

1.75

1.40

1.35

1.32

1.32 

1.32

1.31

1.60

1.58

1.52 

1.51

1.50

.......

"i.'so"

1.39

Mar.

1.58

1.50

1.42

1.48

1.51

1.62

1.62

1.61 

1.61

1.67

1.68

1.94

1.56 

1.98

1.66

1.66 

1.62

1.58

1.65

"i.~56~ 

1.60

1.49 

1.44 

1.41

1.48

Apr.

1.59

1.70

1.68

1.64

1.64 

1.62

1.68

1.46

1.59

1.58

"i."54~

1.70

1.63 

1.67

1.63

1.64

1.79

1.73 

1.68

May.

1.88

1.35

1.33

1.29 "i.'oi"

.......

1.46

1.60

1.48

"i."49~

June.

1.40

1.29

1.31

.......

1.50

1.45

1.51

"i'.51 

1.68

1.51

July.

1.52

1.61

1.68

1.52

1.60

1.51

1.70

1.59

1.65

1.59

1.52

1.51

"i.'ei"

1.59

1.60 

1.54 

1.54

1.52

1.50

Aug.

1.47

1.68

1.64

1.59

1.54

1.60

1.61

1.59

1.60

1.64

1.55

1.61

1.52

1.50

1.53 

1.51

1.45

1.58

Sept.

1.65

1.59

1.71

1.60

1.59

1.57

1.61

1.59

1.57

1.55 

1.61

1.57 

1.54

1.50

1.50

1.52

1.51

1.49 

1.44

1.42 

1.41 

1.41

Oct.

1.50

1.58

1.54

1.52

1.51

1.51

1.53 

1.51

1.60

1.54

1.60

1.60 "Tee"

1.68

1.80

1.72

1.70 

1.63

1.60

1.70

Nov.

1.62

1.54

1.60

1.74

1.68

1.68

1.60

1.55 

1.78

1.90 

1.69

1.63

1.62 

1.62

1.63

1.66

"i'.58 

1.58

1.56 

1.67 

1.68

1.60

Dec.

1.58

1.58

1.58

1.61

1 60

1.58

1.55

1.54

1.54

1.55

1.58 

1.62

1.52 

1.54

1.60

1.72 

1.58

1.86

"i.'ei

1.90

"i."58 

1.60

Daily discharge, in second-feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1.... ........

2........^...

3............

4............ 

5............

6............

7............ 

8............ 

9............ 

10............

Oct.

......

'6."54'

Nov.

0.16

.19 

.25

.31 

.37

.47

.96 

1.38 

1.10

.82

Dec.

0.10

.10 

.10

.10 

.10

.16

.13 

.37

.54 

.37

Day.

11............

12............ 

13............

14............

1^... .........

16............

17............ 

18............ 

19............ 

20............

Oct.

0.37

.28 

.22

.16 

.16

.19

.22 

.25 

.25 

.25

Nov.

0.54

.34 

.96

.68 

.54

.40

.47 

.54 

.61 

.75

Dec.

0.25

1.10 

2.12

3.24

5.72

1.80

2.44 

1.96 

?.44 

2 52

Day.

21............

22............ 

23............

24............

25............

26............

27............ 

28............ 

29............ 

30............

31............

Oct.

0.25

.25 

.25

.25 

.25

.25

.25 

.22 

.19 

.16

.13

Nov.

0.68

.61 

.54

.47 

.37

.13

.13 

.10 

.10 

.13

Dec.

0.75

.25 

.25

.75 

.10

.10

.10 

.10 

.22 

.16

.10
326 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 65 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. .............

2...............

3. ..............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.1

.1

.1

.1

.1

.1

1

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

Feb.

0.1

.1

.1

1.4

.1

.1

1

.1

.1

.1

.1

.1

.4

.2

.1

.1

.1

.3

1.0

2.0

2.8

3.4

2.0

- .1

.1

.1

.1

.1

Mar.

0.1

.3

.1

.1

.1

.1

.5

.5

.5

.5

.5

.9

1.0

9 O

1.0

.5

.3

3.2

.8

.8

.5

.3

.8

.4

.3

.4

.1

.1

.1

.1

2.0

Apr.

1.0

.7

.4

1.1

1.0

.7

3.0

2.5

2.0

.7

.5

1.0

.1

.4

.3

.8

1.5

.2

1.1

.6

.9

.6

.7

1.0

1.4

1.7

1.3

1.0

.5

.8

May.

1.0

1.0

1.5

2.0

2.4

2.0

1.0

.4

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.8

.4

.2

.1

.1

.1

.1

.1

June.

0.1

.1

.1

.1

.1

1.0

.1

July.

0.2

.5

1.5

1.2

1.0

.2

.4

.2

.1

.1

1.1

.7

.4

.8

.6

.4

.4

.3

.2

.1

.2

.3

.4

.8

.5

.4

.4

.2

.2

.2

. .1

Aug.

0.1

.1

1.5

1.0

.7

.2

.4

.2

.4

.5

.4

.4

.4

.4

.7

.2

.2

.3

.5

.2

.2

.2

.1

.2

.1

.1

.3

.3

.2

.2

.1

Sept.

0.8

1.0

2.0

3.0

.8

.4

1.2

.4

.4

.4

.3

.5

.4

.3

.2

.5

.3

.2

.1

.1

.1

.2

.1

.1

.1

.1

.1

.1

.1

1.0

Oct.

0.5

.1

.2

.3

.2

.2

.1

.1

.1

.2

.1

.4

.2

.4

.4

.4

1.5

.8

1.0

l.J>

1.5

1.2

3.0

1.1

.6

.4

3.5

2.5

2.0

1.1

1.0

Nov.

1.0

.5

2.0

.5

.5

.4

.2

.4

1.4

3.0

2.5

1.0

1.0

.4

.2

1.7

2.6

.10

.6

.5

.5

.6

.8

.6

.3

.3

.3

.9

1.0

.4

Dec.

1.0

2.0

.8

.6

.3

.3

.3

.5

.4

.3

.2

.2

.2

.2

.3

.5

.2

.2

.4

1.2

.3

2.3

3.5

2.5

.7

2.6

1.5

.3

.4

.2

.2

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 65 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October 10-31... ..............

1912.

May..........................

Mean 

discharge 

in secondfeet.

0.24

.50

09

.10

KA

64

Oft

.48

Run-off 

(total in 

acre-feet).

10.60

29.90

56.50

6.15

31.10

39.40

58.30

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.10

. .45

.35

SI

.87

.90

.79

.56

Run-off 

(total in 

acre-feet).

5.95

27.70

21.50

OH q/\

63.50

63.60

48.60

406.00

Discharge measurements at station No. 66 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20.......... .............

Sept. 28.......................

Gage 

height.

Feet.

(a)

Discharge.

Sec.-ft. 

0.05

(a)

Date.

Nov.7.. ......................

Dec. 11.. .....................

Gage 

height.

Feet. 

0.45

.44

Discharge.

Sec.-ft. 

0.02

0

a Channel dry. 

NOTE. Bed of stream of sand, gravel, and silt; shifting. One channel at all stages.
ISLAND OF HAWAII. 327

Daily gageheight, in feet, at station No. 66 at 2,700-foot level, nearHilo, Hawaii, for 1911-12. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

i.. ..........:..

2...............

3...............

4...............

5...............

6...............

7...............

8...............

10...............

11...............

12............... 

13............... 

14............... 

15...............

16...............

17............... 

18...............

19...............

20............... 

21...............

22............... 

23...............

24...............

25............... 

26...............

27...............

28...............

9Q

30...............

31...............

Jan.

0.45

.45

.45

.50

.45

.45 

.44 

.44 

.35

.35

-.10

-.10 

-.10

-.09

(0)

00

.00 

.00

00

.00

00

.00

Feb.

(0)

0.00

.00

00

00

.00

.00 

.42 

.30 

.10

-.25

-.50

.......

.......

.59 

.32

.......

Mar.

0.60

.60

.50

.48

.45

.48

.61

.60

.61

.66 

.89 

.96

.62 Qt;

.62

.63 

.61

.59

.62

.64 

.61

.59

.48 

.46

.47

Apr.

0.52

.55

59

.68

.70

.59

.65 

.64 

.55 

.56

""."62"

.60

.61 

.63

.61 

.63

.73

.81

.74

.70

May.

O.S5

.58

.53

.42

""."42"

.......

.46

49

.44

.41

June.

0.30

.28

.30

""."46"

.36

.45

.......

.51

.60

.51

July.

0.50

.59

.61

.52

.55

.48

.65

""."55" 

.63

.61

.44

.42

.......

.49 

.50

.50

.46 

.48

.46

.40

Aug.

0.24

.61

.53

.50

.48

.53

.55

.52

""."52" 

.61

.46

.55

.40 "".'is'

.25

.12 

.11

.48

Sept.

0.59

.60

.72

.51 ui

.47

.58 

.54 

.58 

.54

.57

.49 

.44

.42

.46

.44 \*>

.40

.38

.36

.35 

.35

Oct.

0.44

.50

.48

.44

.40

.42

.48

.44

.56 

.52 

.70

.60

""."82"

.89

1.04

.93

.86

.62 

.60

.......

.90

Nov.

.43

.54

1.00

.80 

.86 

.54 

.46

1.02

1.11 

on

.82

.70

.68

.81 

so

.52 

.50

.48

.88 

.87

.52

Dec.

n ^ft

.50

64

.80

.68

K.A

.44

.40 

.40 

.46 

.52

.88

.62

4Q

.54

1.00 

.80

1.11

.80 

1.15

.51 

.65

. a Channel dry. 

Monthly discharge at station No. 66 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

December. . ..................

1912.

May.................

Mean 

discharge 

in secondfeet.

o0.02

». 06

a.05

.01

.01

09

.09

.04

Run-off 

(total in 

acre-feet).

1.23

3.57

3.08

60

.80

6

CA

5.30

2.40

Month.

1912 Continued.

July..........................

August. . .....................

September ...................

Mean 

discharge 

in secondfeet.

0.03

.04

.05

.05 

.07

.07

.06

.05

Run-off 

(total in 

acre-feet).

1.80

2.60

2.80

3.20

4.40

4.20

3.60

37.20

a Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge for 

periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50.
328 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 67 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 20.... ...................

Sept. 28......................

Gage 

. height.

Feet.

n jo

.24

Discharge.

Sec.-ft. 

0.09

0

Date.

Ncv 7

Gage 

height.

Feet. 

0.35

.36

Discharge.

Sec.-fl. 

0.11

.10

NOTE. Bed of stream of sand, gravel, and silt; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 67 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1... ............

2...............

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14............... 

15...............

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24............... 

25................

26...............

27............... 

28............... 

29...............

Of|

31...............

Jan.

0.40

.40 

.40

.40

.40

.40

.40 

.35

.35

.34

.34

.34

.34

.32

.32 

.31

.31

.31 

.25 

.22 

.21

Feb.

0.20

(a)

(a)

(a)

(a)

(a)

(a)

.34

.30 

.22

.21

.20

.......

49

.31

Mar.

0.50

.40

.34

.35

.31 

.35

49

.48

.48

.52

69

.79

.51

79

.51

.54 

.46

4fi

.48

4fi

Aa

.44 

.34 

.32 

.39

Apr.

0.36

4Q

.46

.52

.60

.52

.51

KA

.51 

.51

.50

.53

.58

.58 

.58

.61

.66

.72

.63 

.61

May.

0.68

.43

.41

.......

.26

.21

""."37"

.39

.39

""."39"

June.

0.35

.30

.34

.40

<*n

.39

.......

.48

.51

.48

July.

0.40

.49

.51

.45

.45

.40

.61

.45

.77

.62

.35

.34

"Mi"

.45

.45 

.40 

.41 

.38

.34

Aug.

0.31

.51

.48

""."42"

.41

.48

.49

.46

.47 

.45

.40

.50

.39

.32

.34 

.32

.29

.41

Sept.

0.63

.64 

.65

.49

Aa

.46

.51

.46

.48 

.46

.50

.47

.41

.40

.34 

.38

.32

.31

.30

.27 

.25 

.25

Oct.

0.41

.44

.40

.38 

.33

.35

.40

.38

.48

.44

.50

.50

.52

.57

.68

""."eo"

.57 

.42

.41

"".&

Nov.

0.52

""."46"

.42

.67

.52

.55

.42 

.36

An

.78

.56

.52

.47

.46

.48

.53 ""."ii"

.40

.38 

.55 

.54

dn

Dec.

(\ Aft

.40 

.40

49

.42

4A

.34

.30

.30

.38 

.40

.44

.40

.36

.42

.60

.45 

.69

""."50

.78

""."40 

.41

a Channel dry.

Daily discharge, in second-feet, at station No. 67 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ..........

3........... 

4...........

5...........

6........... 

7........... 

8...........

9........... 

10...........

Oct.

......

......

Nov.

0.15 

.20

.20 

.25 

.25

.30 

.40 

.35 

.30 

.30

Dec.

0.15 

.15

.15 

.15 

.15

.15 

.15

.15 

.20 

.15

Day.

11...........

1 9

13........... 

14........... 

15...........

16........... 

17........... 

18........... 

19........... 

20...........

Oct.

......

Nov.

0.25 

.25

.40 

.35 

.30

.25 

.30 

.30 

.30 

.30

Dec.

0.15 

.30

.50 

.75 

1.50

.90 

1.00 

.90 

1.05 

1.10

Day.

21........... 

22...........

23........... 

24........... 

25...........

26.v. ........ 

27...........

28........... 

29........... 

30........... 

31...........

Oct.

0.15 

.15

.15 

.15 

.15

.15 .15^

.15 

.15 

.15 

.15

Nov.

0.30 

.30

.30 

.30 

.25

.20 

.15 

.15 

.15 

.15

Dec.

0.85

.70

.60 

.85 

.70

.70 

.65 

.65 

.70 

.70 

.70
ISLAND OP HAW AH. 329

Daily discharge, in second-feet, at station No. 67 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. .............

2...............

3...............

4.............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14........... . 

15...............

16...............

17...............

18...............

19...............

20............... 

21...............

22............... 

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15

.15 

.10

.10

.10

.05

.05

.05 

.05

.05 

.05

.05

.05

.05

.05

.05

.05

.05

.05

Feb.

a

a

a

a

a

a

a

a

a

a

F\ (°)

0.05

.05 

.05

.05

.05

.05

.05

.20 

.35

.50 

.70

.40

.25

.05

.05

.05

.05

Mar.

0.15

.25it

.05

.10

.05

.10

.15

.25

.25

.25

.30

.55

.70 

.40

.30

.25

.70

.25

.30

.20

.20 

.25

.20

.20

.20

.20

.10

.05

.15

.50

Apr.

0.20

.15

.10

.25

.20

30

60

.50

.50

.40

.30

.25

.35

.25 

.25

.30

.40

.25

.30

.40 

.35

.35 

.40

.50

.50

.60

.45

.40

.30

.30

May.

0.55

.20

.15

05

.......

.10

it

.15

.15

June.

0.10

.05

.10

.15 

.05

.15

.......

.28

.25

.25

July.

ft it

OK

40

30

.25

.20

.20

.15

.15

.10

4n

.30

.20

.65 

.50

.45

.40

.30

.10

.10 

.10

.10

.20

.301t

.20

.20

.15it

.15

.10

Aug.

0.05

05

.50

.25

.20

in

.15

.15

.20

.25

.20

.20

.25

.25

.20

.30

.15

.20

.25

.20 

.15

.10 

.05

.10

.05

.05

.15

.10

.10

.10

.10

Sept.

0.30

Af\

60

.70

.45

.45

.45

.25

.25

.20

.20

.25

.20

.20 

.20

.25

.25

.15

.15

.10 

.10

.15 

.05

.05

.05

.05

.05

.05

.05

.20

Oct.

0.15

.15

.20

.20

.15

.15

.10

.10

.101 1

.15

.20

.20

.25 

.25

.25

.50

.30

.35

.50 

.40

.40 

.60

.35

It

.15-

.70

.60

.50

.45

30

Nov.

0.30

.20

.50

.30

.30

.20

.20

.15pin

.70

.60

.30

35

.15 

.10

.55

.65

.35

.30

.25

.20

.20 

30

.20

.15

.15

.15

.35

.30

.15

Dec.

0.40

tn

30

.30

.15

.15

.15

.25

.15it

.10

.05

.05

.15 

.15

.20

.15

.10

.15

.40 

.20

.55 

.70

KA

.25

.65

40

.15

IK

.10

.10

a Channel dry.

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near 

station No. 50.

Monthly discharge at station No. 67 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

March

April.........................

Mean 

discharge 

in secondfeet.

0.15

.26

.56

.10

.10

OK

.35

.20

Run-off 

(total in 

acre-feet).

3.28

15.80

34.80

6.15

5.75

15.40

20.80

12.30

Month.

1912 Continued.

July..... ...... ...............

Mean 

discharge 

in secondfeet.

0.15

.24

.17

.23

.29

.30

.25

.22

Run-off 

(total in 

acre-feet).

8.90

14.80

10.50

13.70

17.80

17.90

15.40

159.00
330 WATEE EESOUECES OF HAWAII, 1912.

Discharge measurements at station No. 68 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.] *

Date.

Sept. 28. .....................

Gage 

height.

Feet,. 

0.96

54

Discharge.

Sec.-ft. 

4.28

7Q

Date.

Nov.7. ......................

Gage 

height.

Feet.

1 9Q

1.15

Discharge.

Sec.-ft. 

5.66

5 1O

NOTE. Bed of stream of cobbles and bowlders with some exposed bedrock. Section near gage, rough. 

Station probably permanent. One channel at all stages.

Daily gage height, infect, at station No. 68 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1...............

3...............

4...............

5............... 

6...............

7...............

9...............

10............... 

11...............

12............... 

13............... 

14............... 

15...............

16...............

17............... 

18...............

19...............

20...............

21............... 

22...............

no

24...............

25............... 

26...............

27............... 

28...............

29...............

30...............

31...............

Jan.

0.80 

.80

.80

.81

7Q

.78 

.. .75 

.75 

.65

.55

.44

.44

.44 

.42 

.42

.42

.41 

.41

.42 

.40

10

.39

Feb.

0.20

.20

.15

.14

.11

.11

.10 

1.00 

.96 

.68

.41

.21

.......

i.75 

1.41

Mar.

1.90

1.60

1.40

1.10 

.91

1.05

1.66

1.65 

1 64

2.02 

2.12 

2.26

1.86 

2.29

1.69

1.84

1.64

1.57 

1.66

1.55 

1.41

1.25 

.94

no

98

Apr.

1.76

1.69

1.85 

1.90

2.14 

2.01

1.64 

1.79 

1.39 

1.41

"i.'ii"

1.51

1.56

1.58 

1.63 

1 64

1 79

1.80

1.79 

1.76

May.

1.94

1.60

1.21 

.90

""."si"

""."82"

.86

sn

""75"

June.

0.70

.68

.70

.......

""."79"

.72

1.18

1.78

1.91 

1.78

July.

1.32

1.41

1.48 

1.32

1.40

1.11

2.23 "i.li"

1.94

1.59

1.00

.99

1.14 

1.15

1.18 

1.12 

1.10

.96

.80

Aug.

0.70

1.77

1.71

1.09

1.04

1.17

1.15

1.12 "i.lo"

1.84

1.07

1.61

.93

""."77"

.79

.79 

.70

1.51

Sept.

1.87 

1.59

2.41

1.60

1.50

1.39

1.70 

1.47 

1.40 

1.21

1.46

1.20 

1.15

1.04

.78 

.81 

.74

.68

.60

.59 

.54 

.53

Oct.

1.01

1.18

.91

.87

.78

.77

1.01

QH

1.52 

1.26 

1.47

1.42

"i~76"

2.01

2.48

"2." is"

2.24

1.86 

1.71

2.48

Nov.

1.89

1.26

1.38

1.30

2.02 

2.08 

1.58 

1.30

2.71

3.00 

2.01

2.19

1.79

1.70 

1.76

1.88

1.39 

1.29

1.15 

1.68 

1.92

1.34

Dec.

1.34 

1.30

1.62

1.90

1.65

1.36 

1.15

1.00 

.90 

.99

1.35

1.80

1.61

1.22

1.80

2.52

1.90

2.72

1.77 

2.90 "i.'so

1.59

Daily discharge, in second-feet, at station No. 68 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1...........

2...........

4........... 

5...........

7. . ......... 

8...........

9...........

Oct. Nov.

2.82 

4.46

6.14

7.91 

10.00

11.10

13.40 

15.20 

12.50 

10.00

Dec.

4.46 

4.30

3.18

2.26 

2.47

2.54

2.54 

2.75 

3.03

2

7K

Day.

11...........

12...........

13...........

14...........

15...........

16...........

17........... 

18........... 

19........... 

20...........

Oct.

......

Nov.

8.00 

6.30

11.40

10.50 

9.80

9.00

10.40 

11.80 

12.90 

14.00

Dec.

2.47 

7.82

14.50

21.80 

24.90

13.50

15.50 

14.50 

15.50 

16.90

Day.

21........... 

22...........

23-. ........ -

24........... 

25...........

26...........

27........... 

28........... 

29........... 

30...........

31...........

Oct.

3.90 

3.58

3.34

3.10

2.89

2.68

2.47 

2.19 

1.91 

1.64

1.40

Nov.

13.80 

13.60

13.40

13.30 

13.20

9.20

5.02 

5.10

4.70 

4.62

Dec.

11.50

5.50

3.90

11.50 

8.20

7.28

7.10 

7.10 

8.20 

7.55

7.10
ISLAND OF HAWAII. 331

Daily discharge, in second-feet, at station No. 68 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1........ .......

2...............

3...............

4... ............

5...:...........

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

20...............

31...............

Jan.

2.40

2.40

2.40

2.40

2.40

2.40

2.40

2.50

2.40

2.40

2.30

2.30

2.00

2.00

1.40

.80

fin

.50

.40

40

.40

.40

.40

.40

.30

.30

.40in

.30

.30

.30

Feb.

0.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

3.90

3.60

1.60

.50

.30

.20

.20

5.00

10.00

15.00

20.00

15.00

10.00

7.20

10.00

10.00

10.00

Mar.

10.00

12.00

9.00

7.10

4.70

3.20

4.30

7.00

9.60

9

CA

9.40

13.00

14.00

16.00

15.00

13.00

12.00

16.00

10.00

11.00

9.40

8.70

9.60

9.00

8.50

7.20

5.90

3.40

3.30

3.70

15.00

Apr.

13.00

12.00

11.00

10.00

12.00

12.00

18.00

16.00

15.00

14.00

13,00

9.40

11.00

7.00

7.20

7.20

7.20

7.20

8.10

8.60

8.80

9.30

9.40

11.00

11.00

11.00

11.00

11.00

11.00

10.00

May.

11.00

11.00

11.00

11.00

12.00

13.00

15.00

14.00

13.00

9.00

8.00

5.60

4.00

4 00

4.00

3.10

5.00

2.70

2.70

2.60

2.50

2.50

2.60

2.80

2.60

2.40

2.20

2.00

2.00

1 80

1 80

June.

1.70

1.70

1.70

1.60

1.60

1.60

1.65

1.70

1.80

1.90

2.00

2.10

2.20

2.30

2.00

1.80

2 70

3.60

4.40

5.30

6.30

7.20

8.10

9.00

10.00

11.00

12.00

11.00

9.00

7 50

July.

6.50

7.20

7.40

7.60

7.80

6.50

7.10

6.00

4.80

5.00

15.00

11.00

7.20

12.00

10.50

9.50

8.90

6.40

3.90

3.80

4.00

4.00

4.00

8.00

5 DA

5.10

5.30 4 90

4.70

3 en

2.40

Aug.

2.00

1.70

15.00

11.00

10.00

5.00

4.60

4.20

5.30

5.10

5.00

4.90

6.00

7.10

11.00

6.00

4.50

6.80

9.10

5.00

3.30

3.00

2.20

2.30

2.30

1.70

8.10

5.00

4.00

3.00

3.00

Sept.

10.00

14.00

16.00

20.00

12.00

8.90

17.00

9.00

8.00

7 50

7.00

10.00

7.70

7.10

5.60

7.60

5.50

5.10

4.20

3.20

2.30

2.50

2.00

1.60

1.30

1.10

1.10

.80

.70

4.00

Oct.

3.00

4.00

4.60

5.30

3.20

2.90

2.30

2.20

3.10

4.00

3.50

8.20

6.00

7.70

7.60

7.30

20.00

11.00

13.00

18.00

18.00

15.00

20.00

15.00

12.00

10.00

20.00

20.00

20.00

18.00

12.00

Nov.

15.00

10.00

18.00

15.00

12.00

5.00

6.00

6.90

6.30

15.00

15.00

13.00

14.00

8.80

6.30

20.00

23.00

13.00

15.00

11.00

10.00

11.00

12.00

10.00

7.00

6.20

5.10

9.80

12.00

6.60

Dec.

10.00

15.00

10.00

10.00

6.60

6.30

9.20

12.00

9.50

6.80

5.10

3.90

3.10

3.80

6.70

11.00

9.10

5.60

11.00

18.00

12.00

20.00

25.00

18.00

11.00

22.00

15.00

8.00

8.90

5.00

5.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 68 at %,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

October 21-31.. ...............

1912.

April. . .......................

May..........................

Mean

discharge 

in secondfeet.

2.65 9 79

8 47

1.31

3.27

9

*M

10.70

5.97

Run-off 

(total in 

acre-feet).

57.60

582

520

8.06

100

Kf7A

637

367

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet*

4.55

6.61

<\ ISt

6.76

10.20

11.30

10.40

7.67

Run-off 

(total in 

acre-feet).

271

406

331

402

627

672

640

5,120

Discharge measurements at station No. 69 at %,700-foot level, nearHilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 21...... .................

Sept. 28...... .................

&,

Feet. 

0.71

R4.

Discharge.

Sec.-ft. 

1.28

.49

Date.

Nov.8.... ............:.......

Dec. 11..... ..................

Gage 

height.

Feet. 

0.80

.75

Discharge.

Sec.-ft. 

2.84

1.80

NOTE. Bed of stream of cobbles and bowlders with some exposed bedrock. Section near gage, rough, 

but probably permanent. One channel at all stages.
332 WATER RESOURCES OF HAW AH, 1912.

Daily gage height, in feet, at station No. 69 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomfu, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2............... 

3...............

E

6...............

7...............

8...............

9...............

10...............

11...............

12............... 

13...............

14...............

15............... 

16...............

17...............

18...............

19...............

20...............

21............... 

22...............

23...............

24...............

25...............

26............... 

27...............

28............... 

29...............

30...............

31...............

Jan.

.......

0.70

.70

.70

.72

.68

.68 

.68

.68

.65 

.64

.62

.62

.62

.61

.60

.60

.60

.60 

.60

.56 

.55

55

Feb.

.......

54

.54

.54

.52

.52

.51

.70

.65

.60 

.60

.59

.......

.81 

.69

.......

Mar.

0.92

.85

.82

.72

.70

.84

.86

.86

.84

1.02

.96

1.01

.94

1.04

.94

.96

.82 

80

84

.85

.84 

.81

.71

.68

79

Apr.

"ofss"

no

.88

91

1 00

QE

.98 

1.04

GO

.91

.89

.93

01

.96

no

96

1.10

1.10 

1.03

1.00

May.

.......

1.22

.72

.71

.62

.59

""65"

.71

.71

.68

June.

0.60

.60

.66

.......

.......

.70

.66

.70

.71

.88

.71

July.

0.75

.87

.88

.78

.81

.80

1.03 ""."si"

.91

.88

.72

.71

.81

.78 

.85

.72 

.73

.71

.70

Aug.

0.69

.84

.83

.79

.74

.80

.81

.80

.83

.87

.70

.81

.70

.68

.72

.70

.65 

.81

Sept.

.......

0.90

.87

1.08

.84

.80

.75

.84 

.81

.84

.80 

.83

.75

.72

.70

.68 

.70

.68

.66

.64 

.62

.63 

.62

Oct.

0.70

.72

.69

.68

.66

.66

.70

.68

.74 

.70

.80

.80

.88

.94

1.08

1.00

.92

.88

.......

1.10

Nov.

0.90

.76

.80

1.16

.98 

1.02

.84

.79 

1.22

1.40

1.02

1.00

.96

.90

.89

.94

.82

.81 

.81

.90 

.93

.83

Dec.

......

0.80

.80

.80

.90

.85

.85

.78

.76 

.70

.75

.78 

.90

.71

.72

.81

1.00

.82 

1.14

.87 

1.19

.81 

.80

Daily discharge, in second-feet, at station No. 69 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1.. ............

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

1.8

1.8

1.5

1.5

1.5

1.5

1.5

2.4

2.9

2.4

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

6.5

5.5

4.9

4.5

5.3

6.1

6.9

7.5

Dec.

1.8

5.3

9.2

14.6

26.0

18.2

20.0

18.5

20.0

21.5

Day.

21..............

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

7.1

6.7

6.5

6.3

6.1

3.1

2.7

2.9

2.4

1.8

Dec.

12.5

6.9

6.5

12.5

8.5

7.5

6.5

6.5

6.5

7.5

6.5
ISLAND OP HAWAII. 333

Daily discharge, in second-feet, at station No. 69 at 2,1/00-foot level, near Eilo, Hawaii,

for 1912.

Day.

1. ..............

2. ..............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24............... 

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.20

1.20

1.20

1.20

1.20

1.20

1.20

1.50

1.40

1.20

1 00

1.00

1.00

1.00

.70

.70

.60

.50

.40

.40

.40

30

.20

.20 

.20

.20

.20

.10

.10

.10

.10

Feb.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

1.20

.70

.20

.20

.20

.20

.20

1.50

10.00

18.00

20.00

12.00 

2.90

1.10

1.00

1.00

1 00

Mar.

3.00

4.90

3.60

3.10

1.50

1.20

3.40

3.60

3.80

3.80

3.40

6.90

5.70

6.70

6.20

5.80

5.30

7.30

5.30

5.70

3.10

2.70

3.40

3.50 

3.60

3.40

2.90

1.40

1.00

1.50

12.00

Apr.

6.00

4.00

3.60

4 90

4.10

4.70

12.00

11.00

10.00

6.50

5.50

6.10

7.30

6.30

4.70

4.50

4.50

4.30

5.10

4.70

5.70

5.10

5.70

8.50 

8.50

8.50

7.10

6.50

5.00

6.00

May.

6.00

7.00

8.00

10.00 19 nn

9.00

5.00

3.00

2.00

1.50

i M\

1.30

1.00

.80

.60

M\

sn

.20

.40

.50

.60

.70

2.50

1.40 

1.40

1 40

1.20

1.00

QA

60

.40

June.

0.20

.20

.20

.20

.20

.20

.50

QA

ftft

.80

.80

on

on

on

I- 00

1.00

1.00

1.20

1.20

1.00

.80

QA

1.00

1.10 

1.20

1.20

1.30

1.30

1.40

July.

2.00

4.00

12.00

7 00

4.10

2.40

2.90

2.80

2.70

2.50

7.10

5.00

2.90

4.70

4.50

4.30

4.10

2.80

1.50

1.40

1.50

1.50

2.00

3.00 

2.90

2.40

3.60

1.50

1.60

1.40

1.20

Aug.

1.20

1.10

5.00

3 40

3.20

2.90

2.60

1.80

2.70

2.90

2.80

2.70

3.00

3.20

4.00

2.00

1.20

2.00

2.90

2.00

1.20

1.10

1.00

1.50 

1.20

.70

2.90

2.00

1.80

1.50

2.00

Sept.

4 00

5.00

8.00

10.00

A. Itfl

4 00

8.10

3 40

2.70

2.40

2 nn

3 An

2.90

3 40

2.70

3.20

2.00

1.50

1.20

1.10

1.00

1.20

1.00

.80 

.70

60

.40

.50An

.60

Oct.

0 90

1.20

1 40

1.50

1.10

1 00

80

on

i nn

1 00

1 «n

2.70

2.70

2 7ft

9.00

4.10

5.30

8.10

8.00

6 90

14.00

6.50 

A on

4.10

20.00

16.00

19 Afl

8.50

5.00

Nov.

6.00

6.00

12.00

6.00

4.50

S

oft

2 7ft

10.00

15.00

19 ftft

6.10

6 90

3 An

2.60

12.00

17.00

6.90

6.50

5.70

4.50

4 30

S

on

4.20 

3.10

2.90

2.90

4.50

3.20

Dec.

Q Art

19 flft

10.00

6

f\f\

2.70

2

7f\

2 7ft

A en

3.60

3.60

2 40

2 in

1.20

i on

9 1ft

4

CA

1.30

1 50

S on

6.50

9 50

17.00

11.00 

A. nn

11.00

10.00

2.90

2 7ft

2.00

2.00

NOTE. Daily discharge determined from, rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 69 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1Q19

May..........................

Mean 

discharge 

in secondfeet.

5.15

8.45

.71

2.50

4.15

6 21

2.66

Run-off 

(total in 

acre-feet).

184.00

518.00

43.70

144.00

256.00

Q7ft ftft

164.00

Month.

1912 Continued.

July..........................

The year...............

Mean 

discharge 

in secondifeet.

0.94

3.33

9 94

2.76

5.01

6.22

5.09

3.49

Run-off 

(total in 

acre-feet).

55.90

205.00

m AA

164.00

308.00

370.00

313. 00

2,530.00
334 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 70 at 2,700-foot level, near Hilo, Hawaii, in 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 21.. .....................

Gage 

height.

Feet. 

0.75

.73

Discharge.

Sec.-ft. 

0.49

.17

Date.

Nov.8 .......................

Dec. 11..... ..................

Gage 

height.

Feet. 

0.97

on

Discharge.

Sec.-ft. 

0.93

.28

NOTE. Bed of stream of gravel with some small cobbles; probably shifting. One channel at all stages.

Daily gage height, in feet, at station No. 70 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Biltkov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

2..........----

5....- ...... ....

6.. ...... -------

7...............

g

10.. ...:...,--.-

11.....--.....---

19

14....... ........ 

15.........------

16.. ...... -...-- -

17.........--.---

1Q

19........--.--.-

20...........----

01

22.... .......... -

23...............

f)A

25...............

26....... ...-----

27

28.........-.-.--

90

30..-....--....--

31...............

Jan.

.......

0.80

.80

.80

.81

.75

.74

.74

.74 

.71

.71

.70

.70

.70

.69

.68 

.68

.66

.66

66

.65 

.64

.64

Feb.

.......

0.62

.61

.60

.60

.59

.59

.56

.75

.70 

.65

.64

.61

.......

.90

.71

.......

Mar.

0.95 

.90

.88

.80

.78

.86

.86

.84

.86

1.08

1.32

1.36

.94

1.34

.88

.92

.86

.87

.84

.85

.93

.87

.82 

.79

.88

Apr.

"6.~98~

1.15

.99

.79

1.06

1.09

1.04

1.08

.90 

.90

.95

.99

1.04

1.04

1.03

1.04 

1.19

1.31

1 28

1.26

May.

.......

1.39

.95

.89

.......

.68

.78

.76

"".'78"

.75

.70

June.

0.64

.59

60

.70

60

.78

.......

.78

on

.74

July.

0.80

.91

.95

.82

.88

.81

1.04

.89

1.01

.85

.78

.76

-------

.82

.79

.83

.78 

.75

.74

.70

Aug.

0.70

.95

.90

.88

.78

.87

.89

.86

.84 

.85

.79

.86

.74

.72 

.75

.74

.71

.84

Sept.

.......

1.00

.97

1.09

.96

.91

.87

.94

.89

.90 

.86

.90

.88

.86

.85

.83

.84

.81 

.79

.77

.74

.72 

.72

Oct.

0.80

.84

.81

.80

.78

.74

.80

.78

.86

.82

.90

.88

.90

1.02

1.21

1.02 "i.'ii"

1.02

.94

.......

1.21

Nov.

.......

0.94

.94

QK

1.10

1.12

1.14

1.01 

.94

1.28

1.41

1.13

1.12

1.10

1.02

1.06

.95

.92

Q9

1.02 

1.02

.98

Dec.

......

0.95

.95

.52

1 00

Qi

.91

.92

on

.88

.90

Ql

1 rtrt

.81

.90

1.00

» 1.10

1.02

1.19

.80

1.18

1.00

97

Daily discharge, in second-feet, at station No. 70 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. .............

2..............

3..............

5..............

7..............

8..............

9..............

10..............

Nov. Dee.

0.8

.6

.4

.4

.4

.6

.8

.6

Day.

11..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

1.4

1.4

1.3

1.2

1.3

1.4

1.6

1.9

Dec.

0.5

1.2

1.5

5.6

2.6

2.8

2.8

2.8

2.8

Day.

21..............

22..............

23..............

24..............

25..............

26.... .........

27..............

28..............

29..............

30..............

31..............

Nov.

1.9

1 Q

1.8

1.8

1.8

1.0

.9

1.0

.9

.8

Dec.

0.9

.6

.6

.6

.6

.4

.4

.6

.5

.4
ISLAND OF HAWAII. 335

Daily discharge, in second-feet, at station No. 70 at % ,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9..............

10...... .........

11..............

12. ..............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21.- .............

22. ..............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.40

.40

.40

.40

.40

.40

4fl

.45

.40

.30

.15

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

'.05 .10

.05

.05

Feb.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.15

.10

.10

.05

.05

.05

.10

1.00

2.00

3

AA

4.50

2.00

.80

.10

.10

.10

.10

.......

Mar.

0.50

1.05

.80

.70

40

.35

.65

.65

.65

.56

.65

1.80

3

qtr

3 fin

9 ftfl

1.50

1 ftA

1.50

.70

on

.60

.70

.55

60

60

.95

.70

Kf\

otr

.70

3.00

Apr.

2.00

1.50

1.20

2.20

1 9^

.35 <t <y\

3.00

2.50

1.65

1.85

1.55

1.80

.80

.80

.90

1.00

1.05

1.55

1.55

1.50

1.55

1.45

2.30

3.25

3.05

2.90

1.50

May.

2.00

2 00

2.00

3.00

S

ee

3.00

2.00

1.20

1 00

1 05

80

.75

60

40

.20

.10

.20

.35

Qf\

Ort

.30

QA

en

.35

<tn

30

.20

.10

.10

.10

.10

June.

0.05

.05

.05

.05

.05

.05

.05

.05

.05

05

.05

.10

.10

.10

.10

.05

.10

.10

.20

.35

.35

.35

.35

.35

.35

.35

.80

.20

.20

.20

July.

0.40

.85

2 no

1.50

1.05

%n

.70

60

.45

.50

1.55

1.20

7C

1 Ql

1.00

on

60

.403*;

.25

.30

40

Wl

.80

.50

.35

.55

.35

.25

.20

.10

Aug.

0.10

.10

1.50

1.05

80

.70

.70

OK

.70

.75

.70

.65

60

.55

60

.40

.35

an

.66

OA

.20

.20

.15

.25

.20

.10

.55

.40

<tn

.20

.20

Sept.

1.00

o nn

3.00

4.00

1 3ft

1.15

1 fi*\

1.10

.85

80

.70

1 00

.75

.80

.65

.80

.70

65

.60

60

.55

.55

.45

.35

.30

.30

.20

.15

.15

.40

Oct.

0.40

40

.50

.55

.45

Aft

oc

OR

40

40

oe

.65

Kf\

Rft

.80

.70

1.50

.80

1.45

2.65

1.50

1 45

3.00

1.95

1.45

1.00

4.50

4.00

3.00

2.55

2.00

Nov.

2.00

2.00

3.00

2.00

1 fifi

1.00

1.00

1.05

3.50

3.00

2.00

O 1 K

1.35

1.00

3.05

3.95

2.10

2.00

1.90

1.55

1.40

1.65

1.30

1.05

.90

.90

i 4n

1 40

1.20

Dec.

2.00

3.50

2.00

1.50

1.05

1.05

1.10

1 3ft

1.00

.85

.90

.80

.70

.80

.85

1.30

.45

.80

30

1.90

1.40

2.45

4.00

3.00

.40

2.40

3.00

I

Ort

1.15

.50

.50

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record atcamp near 

station No. 50.

Monthly discharge at station No. 70 at 2,700-foot level, near Hilo, Hawaii, for 1911-1912.

Month.

1911.

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

1.40

1.15

.19

.51

1 05

1

*7C

on

Run-oft 

(total in 

acre-feet).

50.40

71.10

11.70 90 ^ft

64 60

105.00

55.30

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.18

.68

.47

.92

1.31

1.79

1 43

.93

Run-oft 

(total in 

acre-feet).

10.70

41.80

QQ Qrt

54.70

80.60

107.00

87.90

678.00

Discharge measurements at station No. 71 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 21................ .......

Sept. 28.. ....................

Gage 

height.

Feet. 

0.61

60

Discharge.

Sec.-ft. 

0

Date.

Dec. 11. ......................

height.

Feet. 

0.65

.60

Discharge.

Sec.-ft. 

0.05

.07

NOTE. Bed of stream of silt, sand and gravel; shifting. One channel at all stages.
336 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 71 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsoff, observers.}

Day.

1... ............

2. .............. 

3...............

4... ............

5............... 

6...............

7.. .............

8...............

10...............

11............... 

12...............

13............... 

14...............

15...............

16...............

17...............

18...............

19

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27............... 

28............... 

29...............

30...............

31...............

Jan.

.......

0.65 

.65

.65

.68

.65 

.64

.64 

.64

.64

.64

.64

.64

.64

.62

.61

.61

.60

60

.61 

.58 

.55

.54

Feb.

.......

W (°)

(a)

(a)

(°)

(a) 

(a)

0.60 

.60

.59

.59

.59

on

70

Mar.

0.71 

.70

.60

.65 

.62

.76

.83

.81

.88 

98

.94 

1 fn

1.11

1.11

Q1

1.03

.90

OK

on

.80

7*>

.67 

.64

A*>

.68

Apr.

"6." 77"

.88

.75 

1.08

.74

.71

.74

.72 

.71

.75

.78

7O

7O

70

on

.82

on

01

.89 

.85

May.

1.08

.78

""."73"

.60

.58

.65

.68

.62 "".W

June.

0.58

.50

cn

.......

°60~

.52

.60

.61

.70 

.61

July.

0.62

.71

.78 

.75

.70

.68

.72

.71 

.71

.70

.64

.65

.69

.54

.65 

.60

.62

.61

.59

Aug.

0.58

.68

.65

.64

.62

.68

.71

"~".~68"

""w"

.67

.53

.62

.64

.61

.65

.64

fin

.65

Sept.

.......

0.69 

.69

.78

.69

.65

.61 

.68

.62 

.64

.61

.64

.61

.59

.58

.58

.61

.64

.64

.62

.61 

.61 

.60

Oct.

0.63

.67

.62 

.62

.60

.61

.60

.57 

.62

.61 

.63

.63

.68

.72

.88

.72

.72

.66

.63

.74

Nov.

.......

0.71

.67-

.62

.76

""."76"

.71

.64

.64

.76

.85

.72

.70

.70

.67

.66

.70

.64

.64

.62 

.66 

.65 .62'

Dec.

......

a 62

.60

.60

.62

.62

.61

.60 

.60

.54 

.59

.60

.62

.52

.60

.62

.70

.66

.75

.65

.82

"".'62 

.62

a Channel dry.

Daily discharge, in second-feet, at station No. 71 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. .............

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

.05

.05

.05

.10

.10

.10

.10

.10

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

on

Nov.

0.10

.10

.10

.10

.10

.10

.10

.10

Dec.

0.10

.15

.15

.35

1.00

.30

.40

.30

.40

.45

Day.

21..............

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

Dec.

0.30

.30

.30

.30

.25

.25

.25

.25

.25

.25

.25
ISLAND OF HAWAII. 337

Daily discharge, in second-feet, at station No. 71 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ...... ........

2............... 

3...............

4...............

5............... 

6...............

7...............

8............... 

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

16. .............. 

17............... 

18............... 

19............... 

20...............

21............... 

22............... 

23...............

24. ..............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

0.10

.10 

.10

.10

.10 

.10

.10

.10 

.10

.10

.10

.05

.05 

05

.05

.05 

.05 

.05 

.05 

.05

.05 

.05 

.05

.05

.05 

.05

.05

05

.05

.05 

.05

Feb.

(°)

(°) 

(o)

(a)

(a) 

a)

a)

a) 

a)

a)

(a)

(a)

0.05 

.05

.05

.05 

.05 

.05 

.06 

.10

.30 

.50 

.70

.60

.40 

.20

.20

.10

.10

Mar.

0.10

.10 

.10

.05

.05 

.05

.15

.20 

.25

.20

OA

.40

.35

.45

.50

' .50

.50 

.50 

.30

.45

.30 

.25 

.30

.20

.20 

.10

.10

.05

.05

.10 

.50

Apr.

O on

.20 

.15

OA

.15 

.50

fin

.50 

.40

.15

.10

.15

.10 

.10

.15

.15 

.20 

.20 

.20 

.20

.20 

.20 

.20

30

.30 

.30'

30

.25

.20

.10

May.

0.10

.20 

.30

.40

.50 

4n

30

.20 

.20

.20

.20

.15

.10 

.10

.10

.05 

.05 

.05 

.05 

.05

.05 

.05 

.20

.10

.10 

.05

.05

.05

(\^

.05 

.05

June.

0.05

-------

""."65"

05

.05

.10

.05

July.

0.05

.10 

.20

.20

.20 

.15

.10

.10 

.10

.10

.10

.10

.10 

.10

.10

.10 

.10 

.10 

.05

.05

.05 

.05 

.05

.10

.10 

.10

.10

.05

.05

.05 

.05

Aug.

0.05

.05 

.20

.10

.10 

.10

ns

.05

.10

.10

.10

.10

.10 

.05

.10

.10 

.10 

.10 

.05 

.05

.05 

.05 

.05

.10

.05 

.05

.10

.10

.10

.10 

.10

Sept.

0.30

.40

.60

.10 

.10

.20

.10 

.10

.10

.05

.10

.05

05

.05

.05 

.05 

.05 

.05 

.05

.05 

.05 

.05

.05

.05 

.05

.05

.05

.05

.05

Oct.

0.10

.05 

.10

.10

.05 

.05

.05

.05 

.05

.05

.05

.05

.05 

.05

.05

.05 

.30 

.20 

.10 

.10

.20

.30 

.60

.30

.10 

.05

.70

.50

.30

.15 

.10

Nov.

0.10

.10 

.10

.10

.10 

.10

.10

.05 

.15

.30

.20

.10

.10 

.05

.05

.15 

.30 

.10 

.10 

.10

.10 

.10 

.10

.10

.05 

.05

.05

.10

.05

.05

Dec.

0.20

.50 

.20

.10

.05 

.05

.05

.05

.05

.05

.05

.05

.05 

.05

.05

.05 

.05 

.05 

.05 

.10

.10 

.15 

.30

.10

.05 

.20

.20

.05

.05

.05

.05

a Channel dry.

NOTE. J5aily discharge determined from poorly denned rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near 

station No. 50.

Monthly discharge at station No. 71 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

0.10

.24

.07

.12

.25

Q>t

.15

Run-off 

(total in 

acre-feet).

3.57

14.70

4.30

6.90

15.40

14.30

9.22

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.05

.10

Aft

.12

.16

.11

.10

.13

Run-off 

(total in 

acre-feet).

2.98

6.15

4.92

7.14

9.84

6.55

6.15

93.80

14694° WSP 336 14
338 WATER RESOURCES OF HAWAII, 1912.

Discharge measurements at station No. 72 at 2,700-foot level, near Hilo, Hawaii, in 1912, 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 21.......................

Sept. 28.. ....................

Gage 

height.

Feet. 

0.91

.88

Discharge.

Sec. -ft. 

0

Date.

Nov.8..... ..................

Dec. 11.......................

Gage 

height.

Feet. 

1.00

.96

Discharge.

Sec.-ft. 

0.04

0

NOTE. Bed of stream of silt, sand, and gravel; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 72 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.)

Day.

1...............

2....... :......

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14............... 

15.. . ....... ..

16...... ........

17...............

18.............. 

19............... 

20...............

21............... 

22............... 

23............... 

24............... 

25...............

26...............

27............... 

28............... 

29...............

30

31...............

Jan.

0.98

.98 

.98

1.00

.98

.98

.96

.95 

.95

.95

"".'94' 

.94

.94 

.92 

.91 

.91 

.90

.90

.90

.88 

.85

84

Feb.

(a)

(0)

(a)

(a)

(0)

(°)

(0)

0.92

.90

.84

(a)

(a)

"i.'oo'

.88

Mar.

1.00

.96

.95

.92 

1.08

- OS

1.02

1.09

1.16

1.35

1.42

.99

1.42 

1.12 

1.15

1.11 

1.07 

1.11 "i.'oi"

1.01

.96 

.93 

.91

QQ

Apr.

95

1.05

1.26

1.00

1.05

1 04

1.03

1.00 

1.01

1.02 

1.03 

1.03

1.06 

1.11 

1.14 

1.20

1 30

1.21 

1.21

May.

1.38

OS

.93

.88

.si

""."96" 

"".'95"

.90

"".'89"

June.

0.82

.79

QA

.90

.77

----- 

.68

.90

.68

July.

0.95

1.07

1.09

1.05 

1 00

Q1

1.07

1.00

1.01

.79

"".72 

.71

""92" 

.99

.94 

.92 

.95

QO

on

Aug.

0.90

i.09

1.05

""."99"

95 i no

1.06

1 00

.99 

1.01

.92

"".'99'

.90

""."88"

.92 

.90

.85

.95

Sept.

1.08

1.07 

1.11

1.02

.99

 .96

1.03

.99

1.00 

' .97

.99

.97

.94 

.91

.89 

.91 

.90 

.90

.90

.89 

.89 

.93

Oct.

0.96

1.00

.94

.90

.88

.89

.98

.94

1.02

1.00

1.02 

1.02

1.08 

1.15 

1.28

"i.'io" 

"i.'io"

.98 

.94

1.10

Nov.

1.00

""."99"

1.00

1.15

1.08

1.16

1.01 

.99

1.12

1.25

1.10 

1.08 

1.08

1.02 

1.02 

1.09 "i.'oo

.98

.99 

1.03 

1.04

1.01

Dec.

1.00

1.00 

1.00

1 00

1.00

1.00

.96

.95

.95

.96 

1.00

1.02

1.00

1.00 

1.00 

1.12

1.02 

1.20

"i.'os

1.09 "i.'oo

1.00

a Channel dry. 

Monthly discharge at station No. 72 at 2,700-foot level, near Hilo, Hawaii,for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

a.15

.02

.02

.15

.15

.06

Run-off 

(total in 

acre-feet).

5.95

9.22

1.00

1.20

9.30 8 90

4.00

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.05

.07

.08

.09

.12

.11

.10

.09

Run-off 

(total in 

acre-feet).

3.00

4.20

4.80

5.40

7.50

6.70

5.90

61.90

o Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50.
ISLAND OF HAW AH. 339

Discharge measurements at station No. 73 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 21.......................

Gage 

height.

Feet. 

0.74

.60

Discharge.

See.-ft. 

0.39

0

Date.

Nov.8... .....................

Dec. 28. ......................

Gage 

height.

Feet.

O OQ

.84

Discharge.

Sec.-ft. 0 40

1 00

NOTE. Bed of stream of silt, sand, and gravel; shifting. One channel at all stages.

Daily gage height, in feet, at station No. 73 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Biliikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1..... ..........

2...............

3...............

4...............

5...............

6...............

7............ ..

8...............

9...............

10...... ....... .-

11...............

12...............

TO

15...............

16............... 

17...............

18...............

19...............

20............... 

21..............

22...............

00

24...............

25............... 

26...............

27...............

28...............

29...............

30

31...............

Jan.

.75

.75

80

.70

.70

.68

.68

.65

.65

.65

.64 

64

.64

.62

.62

.61 

.61

.62

.58

.56

.55

Feb.

0:55

.55

.52

.52

.51

.51

.50

.75

64

.62

.61 

60

.......

.97 

.84

Mar.

1.08

1.01

.94

.80

.75

.86

.86

.84

.86

1.15

1.51

1.56

"".'96'

1.56

.83

1.02 

.82

.80

.82

.85 

1.00

.98

.79

.76

<Sfi

Apr.

1.09

1.42

1.14

1.24

1.40

1.30

1.37

1.28

.90

.94

.95

.98

.98 

.98

.98

.98

1.00

1.08

1 03

1.01

May.

1.15

.81

.79

.60

.56

.......

.65

.66

.62

.60

June.

0.55

.50

.53

.60

.51

.73

.81

.91

.81

July.

0.78

.87

on

.88

.83

7"?

1.11

.85

.99

on

.79

.78

.74 

.80

.75

.72

.75

.72

.68

Aug.

0.68

.92

.88

.84

80

.90

.91

.89

.88

.97

""."78"

.88

.72

.72

.75

.74 

.65

.85

Sept.

1 00

1.00

1.09

.91

.89

.86

.97

94

.95

.90

.94

.88

.81

.76

.74

.75

.69

.66

.64

.64

.61

.64

Oct.

0.79

.80

.74

.72

.68

.66

.70

.67

.84

SO

.87

.84

.85

1.01

1.30

1.08

1.06

.82 

.76

1.18

Nov.

0.95

.81

.85

1.25

1.01

1.16

.88

.82

1.35 

1.51

1.16

1.02

1.01

.95

.94

99

.84 

.82

.82

1.00

1.00

.85

Dec.

O QO

.82

.85

94

.91

.81

.78

.75

.70

79

.75

.90 

80

.82

.91

1.16 

.92

1.20

.84 

1.00

.83

.84

Daily discharge, in second-feet, at station No. 73 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ...... ....... 

2. .............

3..............

5..............

6..............

7..............

8..............

10..............

Nov.

........

Dec.

0.1 

.1

.1

.1

.1

.1

.1

.2

.2

.2

Day.

11.............. 

12..............

13..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

........

1.2

9

.8

.7

.8

1.0

1.1

1.2

Dec.

0.1

.4

.8

1.2

3.6

1.7

2.0

1.7

2.1

2.2

Day.

21.............. 

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

1.2 

1.2

1.2

1.1

1.1

.5

.2

.2

.2

.2

Dec.

1.0

.7

.6

1.0

.6

.5

.5

.5

.6

.6
340 WATER RESOTTBCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 73 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12............... is.............:.

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.4

.4

.4

.4

.4

.4

.5

.3

. .2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

Feb.

0.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.4

.1

.1

.1

.1

.1

.1

.5

1.0

2.5

4.0

2.5

1.1

.6

.5

.5

.5

Mar.

1.0

1.5

1 O

1.0

.5

.4

.7

.7

.7

.6

.7

1 R

O E

3.7

2.8

1.9

1.0

3.7

.6

1.3

.6

.5

.6

.6

.6

1 9

1.1

.5

.7

3.0

Apr.

*> n

i a

1.6

O A

1.8

*> *>

4 0

3.5

q A

2.9

*> A.

O R

2.3

.8

1.0

1.0

1.0

1.0 1.1 1.1

1.1 1.1 1.1

1 9

1.4

1.5

1 *\

1 9

1.0

1.5

May.

1.5

1.5

1.5

1.5

1.8

1.5

1.0

.5

.5

.5

.5

.5

.5

.5

.5

. .5

.4

.3

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

June.

0.3

'.5

.8

.5

July.

0.4

.71 <>

1.0

.7

.6

.4

.3

1.0

.6

1.2

1.0

g

.8

.6

.5

.4

.4

.5

.9

.3

.5

.4

.3

.4

.3

Aug.

0.1

1.5

Q

.7

.6

.5

.8

.7

1.1

.5

.4

.5

.7

.4

.3

.1

.6

.5

.2

Sept.

1.5

2 n

3 A

4.0

1 9

1 *>

1.6

.8

.8

.7

1.1

1.0

1.0

.8

1.0

.5

.4

.4

.3

.1

.1

.1

.1

.1

.1

.5

Oct.

0.5

.5

.5

.5

.3

.1

.1

.5

.7

.7

.6

1.2

.6

1 9

2 4

2.5

1.5

3.5

1.4

.6

.4

.3

.3

1.9

1.0

Nov.

9 n

1.5

0 A

1.0

1.0

.5

<j o

4 n

3.5

1 9

1 R

.7

.6

2.6

3.4

1.8

1

0

1 9

1.0

1.0

1 o

1.0

.6

.6

.61 <>

1.2

.6

Dec.

2.0

3

F

2.5

1.5

.6

.6

.6

1.0

.5

.4

.4

.3

.4

.8

.5

.6

1.8

.9

2 n

3.5

2.0

.6

1 9

1.0

.6

.6

.5

.5

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 73 at 2,700-foot level, Jnmr Hilo, Hawaii, for 1911-1%.

Month.

1911.

1912.

April. ........................

May..........................

Mean 

discharge 

in secondfeet.

0.82

.80

.21

.55

1.26

1.76

.55

Run-off 

(total in 

acre-feet).

29.50

48.50

12.90

31.60

77.50

105.00

00 Oft

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.10

.63

.55

.88

.83

1.43

1.07

.82

Run-off 

(total in 

acre-feet).

5.95

38.70

00 Qf\

52.40

51.00

85.10

65.80

KQ4 nn

Discharge measurements at station No. 74 at 2,700-foot level, near Hilo, Hawaii, in 191%. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 21. .....................

Gage 

height.

Feet. 

1.78

Discharge.

Sec.-ft. 

5.45

1.48

Date.

Nov.8 .......................

Dec. 28. .....................

Gage 

height.

Feet. 

2.04

2.12

Discharge.

Sec.-ft. 

10.7

13.6

NOTE. Bed of stream in exposed bed rock. Section near gage fairly smooth. Permanent. Onechannel 

at low stage, two channels at intermediate stages, and one channel at high stages.
ISLAND OF HAWAII. 341

Daily gage height, in feet, at station No. 74 at$,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

1. ..............

2...............

3...............

4...............

5............... 

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24............... 

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.60 

1.60

1.60

1.65

1.50 

1.50

1.50

1.48

1.40

1.38

1.35

1.32

1.31

1.30

1.30

1.30 

1.30

1.30

1.30 

1.28

1.26

1.25

Feb.

1.20

1.20

1.18

1.18

1.16

1.15 

1.14

1.68

1.58

1.44

1.38

1.34

"2."20"

1.91

Mar.

2.28

2.18

2.10

1.88 

1.75

1.92

1.91

1.91

1.96 

2.52

2.59

2.69

2.47

2.66

1.99

2.27

1.98

1.86

2.01 "i.'n"

1.99

1.82 

1.74

1.71

1.79

Apr.

1.96

2.00

2.29 

2.16

2.21

2.40 

2.10

2.09

2.08

2.09

1.60

1.61

1.64

1.62

1.63

1.57

1.70

1.71

1.70 

1.74

May.

2.02

1.75

"i.'ei"

1.81

1.78

1.61

1.72

1.60 "i.'so"

June.

1.40

1.33

1.52

.......

1.60

1 4fl

1.70

2.08

2.21

2.08

July.

1.82

1.93

1.98 

1.91

1.90

1.88

2.58

1.90

2 20

1.81

1.68

1.66

"i.'sg"

1.81

1.83 

1.80

1.75

1.68

1.61

Aug.

1.56

2.10

1.90

1.80

1.81

1.80

1.81

"L'so"

1.94

2.00

i.si

1.98

1.78

1 Pf>

1.67 

1.65

1.61

1.94

Sept.

2.40 

2.00

2.64

2.20

2 ftA

1.79 

2.18

1.97

1.90

1.77

1.97

1.89

1.80

1.78

1.64

1.66

1.59

1.56

1.50

1.45

1.44

1 49.

Oct.

1.76

1.82

1.77 

1.68

1.62

1.65

1.72

1.70 

2.00

1.73

1.94

2.05

2.06

2.34

2.82

2 55

2.62 

2.15

1.88

2.60

Nov.

2.36

2.02

9 14

"2." 44"

2.50

2.18

2.01

2.67

3.22

2.34

2.64

9 97

2.23

2.23

2.43

"~2."6i"

1.98

1.90 

2.01

2.20

1.94

Dec.

2.00 

1.95

2.08

2.30

2 14,

2.00

1.88 

1.80

1.71

1.74

1.85

2.10

1.98

1.90

2.10

2.80

2.05

2.85

"i.'ss

1.92

"2."i2

2.19

Daily discharge, in second-feet, at station No. 74 at %,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. .............

2.;............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

3.64

3.36

3.08

2.80

3.08

3.08

3.08

4.06

4.52

4.06

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

14.40

12.30

13.50

14.40

16.50

18.60

60.00

24 80

Dec.

3.08

9.84

21.00

35.20

66.00

20.40

22.50

20.40

23.40

26.00

Day.

21..............

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

sn

31..............

Nov.

23.40

22.20

21.00

20.10

19.20

9.60

9.20

7.60

4.20

4.06

Dec.

9.60

3.50

3.36

9.60

5.80

2.80

1.80

1.80

5.80

4.20

. 2.80
342 WATER EESOUECES OF HAW AH, 1912.

Daily discharge, in second-feet, at station No. 74 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ....... .......

2...............

5...............

6...............

7...............

8...............

g

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

la

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.80

2.80

2.80

2.80

2.80

2.80

2.80

3.50

3.00

2.40

1.80

1.80

1.80

1.70

1.10

1.00

.90

on

.80

.70

.60

.60

.60

.60

.60

.60

.60

.50

.50

.40

.40

Feb.

0.40

.40

.30

.30

.30

.30

.30

.30

.30

.20

.20

.20

3.90

2.60

1.40

1.00

.80

.70

.40

1.00

20.00

40.00

56.00

30.00

15.00

7.80

6.00

5.00

5.00

Mar.

11.00

17.00

14.00

12.00

7.20

5.00

8.00

7.90

.7.80

7.80

8.80

25.00

28.00

32.00

29.00

26.00

23.00

9.40

17.00

9.20

6.90

9 an

7.10

4.40

9.40

6.20

4.80

4.40

5.60

30.00

Apr.

15.00

11.00

o on

9.60

18.00

14.00

30.00

28.00

25.00

15.00

21.00

12.00

12.00

12.00

12.00

9.00

6.00

2.80

2.90

3.40

3.10

3.20

2.50

4.20

4.30

4.40

4.20

4.80

4.50

5.00

May.

5.00

6.50

5.00

8.00

10.00

8.00

7.00

6.00

5.00

5.00

4.00

3.40

4.00

4.60

5.30

6.00

5.80

5.50

5.10

4,70

3.80

2.90

3.70

4.50

3.60

2.80

2.30

1.80

1.60

1.40

1.20

June.

1.10

1.00

.90

.90

.80

.75

1.30

2.00

2.10

2.20

2.40

2.60

2.70

2.80

2.00

1.10

1.90

2.60

3.40

4.20

5.50

6.80

8.10

9.40

10.70

12.00

15.00

12.00

10.00

8.00

July.

6.20

8.20

25.00

18.00

9.20

7.80

7.60

7.40

7.20

7.00

27.00

15.00

7.60

15.00

12.00

9.00

6.00

5.00

3.90

3.60

4.40

5.20

6.00

6.70

7.40

6.00

6.30

5.80

5. 00

3.90

2.90

Aug.

2.00

2.40

15.00

12.00

7.60

6.70

5.80

6.00

5.80

6.00

5.90

5.80

7.10

8.40

9.60

5.00

6.00

7.60

9.20

6.00

5.50

4.30

3.10

3.80

3.50

2.90

8.40

8.00

7.50

7.00

7.00

Sept.

18.00

20.00

30.00

35.00

21.00

9.60

30.00

15.00

9.60

7.60

5.60

14.00

9.00

7.60

5.30

9.00

7.40

5.80

5.50

4.40

3.40

3.60

2.70

2.40

2.10

1.80

1.40

1.40

1.20

2.00

Oct.

3.60

5.20

5.70

6.20

5.30

3.90

3.10

3.50

4.00

4.50

4.20

9.60

4.70

8.40

8.00

11.00

15.00

11.00

19.00

37.00

32.00

26.00

38.00

29.00

14.00

7.20

56.00

40.00

30.00

28.00

25.00

Nov.

25.00

25.00

30.00

25.00

20.00

15.00

10.00

10.00

19.00

40.00

30.00

22.00

24.00

14.00

10.00

31.00

53.00

19.00

30.00

14.00

16.00

16.00

22.00

16.00

10.00

9.20

7.60

10.00

15.00

8.40

Dec.

12.00

20.00

11.00

10.00

9.60

8.60

12.00

18.00

13.00

9.60

7.20

5.80

4.40

4.80

6.70

12.00

9.20

7 60

12.00

36.00

11.00

38.00

45.00

28.00

6.70

8.00

10.00

13.00

15.00

10.00

10.00

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. 

Discharge for days for which gage heights are missing estimated from diagram prepared from record of 

daily rainfall at the camp near station No. 50.

Monthly discharge at station No. 74 at 2,700-foot level, near Hilo, Hawaii, for 1911-1912.

Month.

1911. 

November 13-30 ..............

December ....................

1912.

April.........................

May.......................

Mean 

discharge 

in secondfeet.

17.50

10.80

1.52

6.90

13.70

10.30

4.63

Run-oft 

(total in 

acre-feet).

628.00

663.00

93.50

397.00

842.00

613.00

285.00

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

4.54

8.62

9.71

16.10

19.90

13.70

9.66

Run-off 

(total in 

acre-ieet).

270.00

530.00

398.00

578.00

990.00

1,180.00

842.00

7,040.00

Discharge measurements of station No. 75 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 21.......................

Sept. 28.... ...... .............

Gage 

height.

Feet. 

0.92

.80

Discharge.

Sec.-ft. 

0.19

Date.

Nov.8..... ...................

Gage 

height.

Feet. 

0.99

1.01

Discharge.

Sec.-ft. 

0.3f

.5f

NOTE. Bed of stream of gravel and small cobbles; probably shifting.
ISLAND OF HAWAII. 343

Daily gage height, in feet, at station No. 75 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

1... ............

2............... 

3...............

4...............

5............... 

6...............

7...............

8...............

9...............

10...............

11...............

12............... 

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25........

26............... 

27...............

28...............

29...............

30...............

31...............

Jan.

.......

0.90 

.90

on

.92

.90

.90

.88

.88

.85

.84

.80

.80

80

.74

.78

.78

 .75

.75 

.75

.72

.70

.69

Feb.

.......

0.69

.69

.70

fiQ

.69

.69

.68 

.91

.84

.76

.74

.72

1.00

.83

Mar.

1.10 

1.05

1 00

.91 

.90

.98

.94

.92

.99

1.06 

1.06

1.08

Qfi

1.14

1.02

1.08

1.01

.98

1.02

.91

1.03 

.96

.89

.87

.96

Apr.

O OQ

QQ

1.06 

1 09

1.15

1.10

1.09 

1.05

.98

94

.92

99

1.01

i n<\

1.05

1.07

1.10

1.20 

1.24

1.16

May.

.......

1.29

1

AA

.91

.86

.85

.90

.92

.90

07

June.

0.81

.79

.81

.88

.76

.80

.90 

1.00

.90

July.

0.95

1.07

1.09 

1.05

1.00

.95

1.13 "i.'oi"

1.07

.92

.84

.82

.96

1 01

98

92

89

88

86

Aug.

0.86

1.02

1.01

1.00

.94

1 00

1.01

.98

1.00

1 03

1 04

1 fifi

on

QQ

.91

.90

.82 

.98

Sept.

-------

1.03 

1.03

1.14

1.00

OR

.92

1.01 

.99

.98

.95

1.00

.97

.94

.92

.88

.91

on

SO

.84 

.82

81

.82

Oct.

0.92

94

.91 

.90

.85

.86

.90

.87

.98 

.95

1.00

.99

1.02

1.10

1.08

1.12

1.04

1.00

1.19

Nov.

.......

1.04

.95

.99

1.22

1.10 

1.12

1.01

.97

1.20

1.12

1.10

1.08

1.04

1.03

1.09

1.01

.99 

.98

1.06

1.06

.98

Dec.

......

1.00 

1.00

1.00

1.08

1.00

1.00

.96

.95 

.94

.95

1.00

1.08

.98

1.00

1.14

1.28

1,00

1.01

1.00

Daily discharge, in second-feet, at station No. 75 at %,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. .............

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

0.10

.10

.10

.10

.10

.14

.18

.30

.50

.30

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

0.60

.55

.50

.60

.75

2.68

1.00

Dec.

0.14

.85

2.13

3.89

5.32

1.80

2.35

2.02

2.35

2.90

Day.

21..............

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

1.00 i no

.95

95

.95

.42

.26

.26

.10

.10

Dec.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10
344 RESOURCES OF HAWAII, 1012.

Daily discharge, in second-feet, at station No. 75 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...... ......... 

2................

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20............... 

21...............

22............... 

23............... 

24...............

25............... 

26...............

27...............

28...............

29............... 

30...............

31...............

Jan.

0.10

.10

.10

.20

.10

.10

.10

.10

.......

.......

.......

.......

Feb.

(a)

aS

a)

a)

£

(a

(a 1

(a

(a)

(a)

0.10

(a)

(«)

(O)

(a)

.20 

1.50

2.50 

3.00 

2.00

.50 

.10

.10

.10

.10

.......

Mar.

0.50 

1 00

.50

.50

.10

.10

.40

.40

9A

.20

KA

.80

.80

on

.70

.50

30

1.30

.60

.90 

60

.40 

.60 

.40

.10 

.60

.30

.10

.10 

.30

2.00

Apr.

0.70

.10

.10

80

1 00

2.00

1.80

1.70

1 00

1.00

.80

.40

.30

.20

.20

KA

.60 

.80

.80 

.90 

1.00

1.40 

1.80

2.20

1.50

1.00 

1.20

May.

1.20 

1.40

1.60

2.00

2.80

2 on

1.50

.90

.70

50

.30

.10

.10

.10

.10

.10

.10

.10

.10

.10 

.10

.10 

.20 

.20

.20 

.10

.10

.10

.10 

.10

.10

June.

.......

0.10

.......

.10

.50

.10

.......

July.

0.30 

.90

2.00

1.30

1.00

.80

.50

.40

30

.40

1.20

.90

.60

.90

60

.40

.20

.10

.10

.10 

.10

.10 

.10 

.20

.30

.60

.40

.20

.10 

.10

.10

Aug.

0.10 

.10

.80

.60

60

.50

.50

.30

.50

60

.50

.40

.50

.50

.60

.60

.70

.60

.50

.30 

.10

.10 

.10 

.10

.10 

.10

.40

.30

.20 

.10

.20

Sept.

0.60 

.80

1.00

1.40

.60

.60

1.30

.50

- .30

.20

.60

.50

.40

30

.50

.40

.30

.20

.10

.10 

.10 

.10

.10 

.10

.10

.10

.10 

.20

Oct.

0.20 

.20

.20

.30

.10

.10

.10

.10

.10

.10

.10

.40

.30

.50

. 50

. 50

.80

.60

1.00

.90 

.90

.90 

2.00 

1.20

.70 

.50

3.00

2.00

2.00 

1.70

1.50

Nov.

1.50 

1.00

2.00

1.00

.70

.50

.30

.50

2.00

3.00

2.00

1.00

1.20

.60

.40

1.80

2.00

1.20

1.00

.90 

.70

.60 

1.00

.80

.60 

.50

.40

.80

.80 

.40

Dec.

1.00 

2.00

1.00

.70

.50

.50

.50

.90

.50

.50

.30

.30

.30

.30

.50

.90

.40

.50

1.30

1.50 

2.70

3.00 

3.00 

2.50

50 

1.00

.80

.60

.50 

.30

.20

o Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 75 at 2,700-foot level, near Hilo, Hawaii, for 1911-1%.

Month.

1911. 

November 14-30. .............

1912.

March........................

April.........................

May..........................

Mean 

discharge 

in secondfeet.

0.74

.87

.08

.35

.54

03

.56

Run-off 

(total in 

acre-feet).

25.10

53.00

4.92

20.10

33.20

55.30

34.40

Month.

1912 Continued,

July..........................

Mean 

discharge 

in secondfeet.

0.20

.49

 >7

.39

.76

1.04

.95

.56

Run-off 

(total in 

acre-feet).

11.90

30.10

99 SJA.

23.20

46.70

61.90

58.40

403.00

Discharge measurements at station No. 76 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 21.... ...................

Sept. 28.. ....................

Gage 

height.

Feel.- 

0.85

.75

Discharge.

Sec.-ft.

.26

Date.

Nov.8... .....................

Dec. 28..... ..................

Gage 

height.

Feet. 

0.98

1.01

Discharge.

See.-ft. 

0.98

1.25

NOTE. Bed of stream of small bowlders and cobbles. Section fairly smooth. Channel permanent. 

One channel at all stages.
ISLAND OF HAWAII. 345

Daily gage height, infect, at station No. 76 at 8,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, BelayefE, Selitonott, and Kuznetsofl, observers.]

Day.

1.... ...........

3.. ............ -

4.... .......... -

5...............

6...............

7..............

g

10...............

11...............

12............... 

13...............

15...............

16...............

17...............

18...............

19

20...............

21...............

22...............

23...............

24...............

25...............

26............... 

27...............

28...............

29...............

30...............

31...............

Jan.

0.80

.80

.80

84

.78

.78 

.75 

.75

.70

.68

.66

.66

.66

.65

.65

.65

64

.64 

.66

.62

.60

.60

Feb.

0.55

.55

.55

.54

.54

.52

.52 

.82

.78

.70

.68 .64*

.95

.81

Mar.

1 05

1.02

.94

.82

.81

.88

.85

.85

.85

1.11 

1.16 

1.22

1.05

1.24

.86

OS

.81

.86

.86

.82

1.01

.94

.84

.82

.88

Apr.

0.90

1.20

1.06

1.38

1.49

1.43

1.39 

1.20 

.91

.91

.90

91

.99

.98

1.01

1.03

1.15

1.21 

1.21

1.15

May.

1.28

.98

.93

on

.81

so

.81

.79

.78

June.

0.75

.68

.70

"" 7Q

.70

.80

.90 

1 00

.90

July.

0.88

QQ

1.01

.98

.93

.88

1.10

""."92"

1 (U

QQ

Of

.80

.89

.91 

.90

.88

89

.89

.81

Aug.

0.86

.98

.92

.91

.88

.93

.95

.92

1.05

.88

.99

.85

.81

.85

82

.78 

.94

Sept.

1.09

1.11

1.18

QQ

.95

.91

1.01 

.99 

.98

.95

.89

.88

Q4.

.82

.84

.82

.81

.80

.78

.75

.80

Oct.

0.90

.91

.89

.85

.83

.84

.85

.82

.95 

.92

.98

.92

.96

1.08

1.16

1.18

1.06

1.02

1.41

Nov.

1.08

.94

QQ

1.40

1.19

1.28 

1.03

Qfi

1.23

1.20

1.16

1.09

1.07

1.10

.99

.98 

' .96

1.12

1.12

1.00

Dec.

0.92

.95

.99

1.01

1.00

.98

.94

.95 

.89 

.95

.99

1.11

1.04

1.09

1.22

1.32

.95

1.01

1.01

Daily discharge, in second-feet, at station No. 76 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. .............

2..............

3..............

4..............

5..............

6..............

7..............

~8. .............

9..............

10..............

Nov. Dec.

0.29

.28

.28

.28

.33

.33

.36

.48

.57

.45

Day.

11..............

12..............

13..............

14......... ...

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

1.31

1.42

1.20

1.42

1.75

12.20

3.65

Dec.

0.30

.90

2.30

4.18

9.56

3.05

3.80

3.05

4.56

6.12

Day.

21..............

22..............

23..............

24..............

25..............

26..............

27. ...........

28..............

29..............

30..............

31..............

Nov.

3.50

3.20

2.90

2.60

2.30

1.14

V7

.57

.36

in

Dec.

1.20

60

.54

1.20

QA

.60

60

60

.90

.72

.60
346 WATER RESOURCES OF HAWAII, 1912.

.Daily discharge, in second-feet, at station No. 76 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...............

2...............

3...............

4...............

5...............

6..............

7...............

8...............

9..............

10...............

11............ .

12..............

13..............

14..............

15..............

16...............

17..............

18...............

19..............

20..............

21...............

22..............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30..............

31...............

Jan.

0.30

, .30

.30

.30

.30

.30

.30

.40

.40

^n

.30

.30

.25

.25

.20

.20

.20

.20

.20

.20

.20

.15

.15

.15

.15

.15

.20

.10

.10

.10

.10

Feb.

0.10

.10

.10

.10

.10

.10

.10

.10

.05

.05

.05

.05

.35

.30

.20

.20

.15

.15*;n

2 00

5.00

8 Aft

10.00

6.00

.90

.35

.30

30

.30

Mar.

1 00

1.75

1.40

.85

.35

.35

.55

CA

.45

.45

45

2 m

3.20

4.20

3 40

2.60

1.75

4 40

.55

1.10

.35

.55

.55

45

.35

1.30

.85

40

.35

.55

8.00

Apr.

4 00

1 00

.60

3

0ft

1.80

5.85

9 00

9 00

8.00

o AA

7 90

5.90

3.80

.65

.65

i nn

9 nn

60

.65

1.15

1.10

 f Oft

1.55

1.75

9 nn

4.00

4.00

3.05

1.00

1.00

May.

2.50

2.50

3.00

4 00

4.80

4.00

3 Aft

9 nn

1.50

1.10

i nn

.80

.70

60

CA

OK

.35

OK

.35

30

30

.30

.30

.35

.30

.30

.30

.35

.30

.30

.30

June.

0.25

.25

.25

.20

.20

.20

.20

.20

.20

.20

.20

.30

.30

.30

.30

.20

.20

.20

.30

Oft

.30

40

40

.50

.50

.60

1.20

.60

.60

.50

July.

0.55

1.15

4.00

2.50

1.30

1.10

.80

.70

.55Kft'

2.30

1.50

.75

1.65

1.50

1.30

1.15

.80

.35

.30

.40

sn

.50

.90

.60

.65

.60

.55

.60

.60

.35

Aug.

0.30

.50

3.00

1.10

.75

.70

.65

.55

.80

QA

.80

.75

1.10

1.75

1.75

.60

.55

.SO

1.15

CA

.454n

.35

.45

.35

.30

.85

.80

.70

.60

.70

Sept.

3.00

4.00

7.00

9 nn

2.45

3

OA

1.15

.90

.80

.65

1.30

1.15

1.10

.90

.90

.60

.55

.40

40

.35

40

.35

.35

.30

.30

.30

.25

.30

.90

Oct.

0.70

.60

.70

.65

.60

45

40

40

40

.45

.35

.90

.75

1.10 i nn

.75

2.50

QK

2.05

2

1ft

2.20

3.20

9 nn

3.50

1.85

1.40

10.00

8.00

9.00

8.00

4.00

Nov.

5.00

3.00

8.00

4 Aft

2

1ft

1.00

QK

1.10

1.80

10.00

9 nn

3.65

5.30

1.55

.95

6.95

8.50

4.35

3.80

S

oft

2.20

i QC;

2

°.n

1.60

1.15

1.10

.95

2.60

2.60

1.20

Dec.

A nn

7 Art

1.00

3 Art

7C

on

1.15

1

0ft

1.10

.85

on

60

QA

1.15

2 AX

1.65

2.20

4.20

5.20

6.10

9 nn

10.00

2.00

on

3.00

2.00

1.50

1.30

1.30

1.30

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from- diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 76 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

November 14-30........ . .

1912.

February. ......

Mean 

discharge 

in secondfeet.

1.61

.23

1.24

1.46

S on

1.20

Run-off 

(total in 

acre-feet).

79.90

88.90

14.10

71.30

89.80

190 00

73.80

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.34

1.00

sn

1.52

2.51

3.59

2.58

1.64

Run-off 

(total in 

acre-feet).

20.20

61.50

49.20

90.40

154.00

214.00

159.00

1, 190. 00

Discharge measurements at station No. 77 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E.G. Christiansen, hydrographer.]

Date.

Aug. 21. ......................

Sept. 28........

Gage 

height.

Feet. 

0.65

60

Discharge.

Sec.-ft. 

0.10

.06

Date.

Nov.8.... ....................

Dec. 28. ......................

Gage 

height.

Feet. 

0.68

.68

Discharge.

Sec.-ft. 

0.17

.17

NOTE. Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at 

all stages.
ISLAND OF HAWAII. 347

Daily gage height, in feet, at station No.77 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

fBomin, Billkov, Goorko^ Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

1...............

2...............

3...............

5...............

6............... 

7...............

8...............

9...............

10...............

11............... 

12............... 

13...............

14...............

15...............

16............... 

17...............

18...............

19...............

20...............

21...............

22............... 

23...............

24............... 

25...............

26...............

27............... 

28...............

29...............

30...............

31...............

Jan.

0.71

.71

.71

.74

.70 

.70 

.68

.68

.65

.65

.64

.64

.64

.64 

.64

.64 

.62

.62

.62 

.60

.56

.55

Feb.

0.50

.50

.49

.48

.48

.46 

.46

.68

.60

.52

.51 

.50

"i.'isi"

.99

Mar.

i.ij.

1.20

1.13

1.02

1.02 

1.15

1.19

1.18

1.21 

1.30

1.44

1.51

"i.'ii"

1.42

1.24

1.28

1.22

1.20 

1.24 "i.'ie"

1.21

1.16 

1.12

1.08

1.16

Apr.

1.22

1.46

1.29 

1.31

1.39

1.34 

1.35 

1.25

1.23

1.21

1.20

1.28

1.31

1.34

1.42 

1.44

1.50 

1.55

1.53 

1.55

May.

1.70

1.30

"i."23"

1.01

i on

.90

.91

.89 """so"

June.

0.78

.71

.71

.81

.74

.81

.......

.98

1.02 

.98

July.

1.02

1.13

1.18

1.15 

1.10

1.00

1.20 "I.li"

1 19

""."99'

.98

.96

.......

"i.'oi"

1.03

1.02 

1.01

1.05

.96

.98

Aug.

0.98

1.10

1.04

QA

.90

.64

.65

""."62"

64

.71

""."62"

.66

.66 ""."el"

.65 

.62

60

.65

Sept.

1.21

1.22 

1.26

1.11

.98

.74 

.80 

.79

.78

.74

.75 

.72

.70

.69

.62

.64 

.62

.62 

.62

.62 

.61

.62

Oct.

0.70

.66

.65

.64

.62

64

.64

.62 

.70 

.66

.70

.69

.86

.94

.79

.78 

.72

.68

.84

Nov.

0.75 

""."76"

.70

.89

""so"

.80

.74

.70

.90

.84

.79

.80

.74

.72 

.76

""."76" 

.70

.69 

.73

.72

.70

Dec.

0.70

.70 

.69

.72

.68

.62

.61 

.60 

.60

.61

.62

.68 

.60

.64

.72

.84

""."so

""."76

.68

Daily discharge, in second-feet, at station No. 77 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1....... .......

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

1.6

1.5

1.4

1.0

1.2

1.2

1.3

1.2

1.2

1.2

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

0.5

.4

.4

.8

1.3

3.1

1.3

Dec.

1.1

2.2

3.3

4.4

5.3

3.4

3.7

3.6

3.9

4.3

Day.

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

1.5

1.8

2.0

2.3

2.4

2.3

2.2

2.3

2.1

1.7

Dec.

2.4

1.6

1.6

2.2

1.9

1.7

1.6

1.6

1.9

1.7

1.6
348 WATER RESOURCES OP HAW AH, 1912.

Daily discharge, in second-feet, at station No. 77 at 2,700-foot level, near Hilo, Hawaii,

for 1912. x

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.20

.20

.20

.20

.20

.20

.20

.30

30

.20

.20

.20

.20

.20

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

Feb.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.20

.10

.10

.10

.10

.10

.20

1 00

2.00

3.50

5.00

3.50

2.5

1.5

1.0

1.0

1.0

Mar.

2.0

2.5

2.8

2.4

1.7

1.7

2.5

2.6

2.7

2.6

2.9

3.4

4.2

4.7

3.0

2.0

2.4

4.1

s n

3.3

2.9

2.8

3.0

2.8

2.6

2.9

2.6

2.3

2.1

2.6

4.0

Apr.

3.0

3.0

2.9

4.4

3.3

3.5

5.0

4.5

4.0

3.9

3.6

3.7

3.1

3.0

2.9

2.9

2.8

2

O

3.3

3.5

3.6

4.1

4.2

4.6

4.8

4.9

4.8

4.9

3.0

3.0

May.

3.5

4.0

4.0

4.5

5.8

5.0

5.0

4.5

4.0

3.4

3.2

3.0

2.5

2.0

2.0

1.7

1.6

1.6

1.4

1.3

1.2

1.0

1.5

1.1

1.0

1.0

.8

.5

.4

.4

.3

June

0.4

.4

.3

.2

.2

.2

.2

.2

.2

.3

.4

.5

.6

.6

.4

.3

.3

.4

.5

.6

.7

.9

1.0

1.2

1.4

1.5

1.7

1.5

1.6

1.6

July

1.7

2.4

4.0

3.0

2.7

2.5

2.2

1.9

1.6

1.8

2.8

2.5

2.3

2.7

2.0

1.8

1.5

1.5

1.5

1.4

1.4

1.5

1.6

1.7

1.7

1.8

1.7

1.7

1.9

1.4

1.5

Aug.

1.5

1.5

4.0

2.2

1.8

1.5

1.2

1.0

.1

.1

.1

.1

.1

.1

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.2

.1

.1

.1

Sept.

3.0

4.0

5.0

6.0

2.9

2.9

3.2

2.3

1.5

1.0

.3

.5

.5

.4

.3

.4

.3

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.1

.1

.5

Oct.

0.4

.2

.2

.1

.1

.1

.1

.1

.1

.1

.1

.2

.1

.2

.2

.2

1.7

.8

1.2

1.0

1.0

.5

3.0

.4 >

.2

6.0

4.0

2.0

.7

.5

Nov.

0.5

.5

3.0

1.0

.4

.2

.2

.2

1.0

5.0

3.0

.5

.5

.3

.2

1.0

3.0

.7

.5

.5

.3

.3

- .4

.3

.2

.2

.3

.3

o

Dec.

2.0

3.5

.5

1.0

.2

.2

.2

.3

.2

.1

.1

.1

.1

.1

.1

.2

.1

.1

2.0

.7

3.0

5.0

3.0

.5

1.0

.3

.2

.2

.2

.2

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 77 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

November 14-30. ............

1912.

Mean 

discharge 

in second 

feet.

1.67

2.18

.15

.83

2.81

3 7ft

2.36

Run-off 

(total in 

acre-feet).

56.40

134.00

9.22

47.70

173.00

145.00

Month.

1912 Continued.

July..........................

October. .....................

Year......................

Mean, 

discharge 

in second 

feet.

0.68

1.99

.55

1.21

.83

.83

.83

2.11

Run-off 

(total in 

acre-feet).

40.50

122.00

00 Ort

72.00

51.00

49.40

51.00

1,010.00
ISLAND OP HAWAII. 349

Discharge measurements at station No. 78 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Sept. 28. ...................

Gage 

height.

Feet. 

0.88

.80

Discharge.

Sec. ft. 

0.06

.05

Date.

Nov.8.. ..............:.......

Dec. 28. ......................

Gage 

height.

Feet. 

0.90

.90

Discharge.

Sec.jt. 

0.14

.14

NOTE. Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at all

Daily gage height, in feet, at station No. 78 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]

Day.

1...............

2...............

3...............

5............... 

6...............

7...............

8...............

9...............

10............... 

11...............

12...............

13...............

14...............

15............... 

16...............

17...............

18...............

19...............

20............... 

21...............

22...............

23............... 

24............... 

25...............

26............... 

27............... 

28............... 

29...............

30...............

31...............

Jan.

0.85 

.85

.85

.89

.75

.75

.74

.74

.74 

.74

.74

.74 

.74

.72

.71 

.71 

.70

.70 

.68 

.65 

.64

Feb.

0.61

.61

.60

fio

.60 

.60

.59

.85

.80

.74 

.71

.70

.......

""."93" 

.80

Mar.

1.00

1.00

.92

.88 

.85

.91

.94

.92 

.96

1.01

1.12

1 1Q

.99

1.22

.99

1.03 

.91

.91

.94 """gi"

.96 

.91

.86

Si

.go

Apr.

0.98

1.01

.98 

^.99

1.00 

.98

1.02

1.02

.90

.91

.90

.91

.90 

.94

.95

1.01 

1.12

1.21

1.19 

1.18

May

1.29

.85

.80

.76

.88.

.......

.81

""."82"

.80

""."78"

June

0.70

.68

.67

.......

.69

.69

.80

.98 

1.02

.gs

July

0.88

.97

1.00 

.98

.92

.90

1.21

.95

.99

.98

.86

.85

""."iii"

.92 

.92 

.90 

.92

.88

QA

Aug.

0.82

.99

.96

.91

.86

.92

.94

.90

.92

.94

.89

.92

.88

.84 

.84 

.81

.80

.89

Sept.

0.99 

1.01

1.11

.94

on

.88

.94

.90

.89

.84 

.90

.89

.88

.86

.84

.86

.84 

.82

.81 

.80 

.80 

.80

Oct.

0.87

.90

.88 

.86

.82

.82

.85 

.82

.94

.91

.94

.92

 .96

1.01

1.05

"L04

.98

.88

1.10

Nov.

0.95

.89

.90

1.17

1.00

1.08

1.03

.90 

1.11

1.05

1.01

1.02

.95

.96

1.02 ""."gi"

.91 

.91 

1.00 

1.00

.92

Dec.

0.91 

.90

Q1

1.05

.92

.91 

.90

.89

.85

SQ

.92 

1.00

.90

.95

1.02

1.18

""."95

""."96 

.90
350 WATER RESOURCES OP HAWAII, 19l2.

Daily discharge, in second-feet, at station No. 78 at 2,700-foot level, near Hilo, Hawaii,

for 1911-12.

Day.

1911. 

1.............. 

2. .............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Day.

1912. 

1...............

2............... ^.:... ..........

4...............

5............... 

6...............

7...............

8.--.-...-......

9...............

10. ..............

11...............

12...............

13............... 

14...............

15. ..............

16...............

17...............

18. .............. 

19...............

20...............

21............... 

22. .............. 

23...............

24...............

25............... 

26...............

27...............

28. ..............

29...............

30............... 

31...............

Nov.

........

Jan.

0.10 

.10

.10

.10

.05

.05

.......

.......

Dec

0.1 

.1

.1

.1

.0

.0

.1.1.1

.1

Feb.

0.10 

.05

.......

.20 

.05

.......

0 11. 

0 12.

0 13.

0 14.

(5 15.

15 16.

0 17.

0 18.

0 19.

0 20.

Mar.

0.30

.50

.50

.20

.10 

.10

.10

.20

.30

.20

.30

.60

1.50 

2.10

1.50

1.00

.50

2.40 

.50

.75

.10 

.10 

.30

.20

.10 

.30

.10

.10

.10

.10

2

CA

Day.

1911.

Apr.

0.20

.30

.40

.60

..40 

.50

2.00

1.50

1.00

.60

.40

.70

.70 

.10

.10

.10

.20

.10 

.10

.10

.30 

.30 

40

1.50

2.00 

2.30

2.10

 2.00

.50

1.00

...... .

May.

1.50

1.50

2.00

2.50

3.10 

2.50

1.00

.50

.20

.10

.10

.05

.05 

.05

.05

.05

.10

.10 

.10

.10

.05 

.05 

.05

.05

;05 

.05

.05

.05

.05

.05 

.05

Nov.

0.50

.42

.30

.42

.66

2.40

.66

June.

......

0.05

.40

.70

.40

Dec.

0.05 

.38

1.48

2.80

4.70

.50

1.75

.50

1.75

2.70

July.

0.10

.40

.70

.60

.50 

.40

.20

.10

.10

.10

2.30

1.50

.30 

.50

.40

.40

.40

.30 

.10

.10

.10 

.10 

.10

.10

ao

.20

.20

.10

.20

.10 

.10

21..

22..

23..

24..

25..

26..

27..

28..

29..

30..

31..

Aug.

0.05

.05

.80

.50

.30 

.20

.10

.10

.20

.30

.20

.10

.20 

.20

.30

.20

.10

.10 

.20

.20

.10 

.10 

.10

.10

.05 

.05

.10

.10

.05

.05 

.10

Day.

1911.

Sept.

0.50

.60

1 00

2.00

.50 

.60

1.40

.30

.10

.10

.10

.30

.10 

.10

.10

.10

.10

.10 

.10

.10

.10 

.10 

.10

.05

.05 

.05

.05

.05

.05

.25

>

Oct.

0.10

.10

.10

.10

.10 

.10

.05

.05

.10

.10

.05

.30

.10 

.30

.20

.20

.50

.30 

.60

.70

.80 

.90 

1.50

.80

.40 

.10

3.00

2.00

1.70

1.30 

1.00

fov.

0.74 

.82

.90

.9*

1.14

.10

10

.10

.10

.10

Nov

1.0

.5

2.0

.5

.3 

.2

.1

.1

1 Q

3.0

2.0

.5

1.1

.7

.1

1.4

2.0

.9 

.6

.7

.3 

.3

.7

.4

.1 

.1

.1

.5

.5

.2

0

0

0

0

0 

0

0

0

0

0

0

0

0 

5

0

0

0

0 

0

0

0 

0 

0

0

0 

0

0

0

0

0

Dec.

0.42 

.10

.10

.26

.10

.10

.10

.10

.26

.18

.10

Dec.

1.50

2.50

1.80

.70

.10 

.10

.10

.90

.20

.20

.10

.10

.10 

.10

.20

.50

.10

.30 

.70

1.00

2.00 

2.50 

3.00

2.50

.30 

.50

.30

.10

.10

.10 

.10

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 78 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

0.61

.62

.05

.20

C7

.75

w

Run-off 

(total in 

acre-feet).

20.80

3.07

H CA

44 60

32.00

Month.

1912 Continued.

July..........................

Mean

in secondfeet.

0.10

.35

.17

.27

.57

.76

.74

.42

Run-off 

(total in 

acre-feet).

5.95

21.50

10 40

16.10

35.00

45.20

45.50

306.00
ISLAND OP HAWAH. 351

Discharge measurements at station No. 79 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.J

Date.

Aug. 21... ....................

Sept. 29.......................

Gage 

height.

Feet. 

0.78

.65

Discharge.

Sec.-ft. 

0.28

.31

Date.

Nov.8..... ...................

Dec. 28. ......................

&,

Feet. 

0.87

.98

Discharge.

Sec.-ft. 

0.94

1.36

NOTE. Bed of stream of sand, gravel, and small cobbles; probably slightly shifting. One channel at 

all stages.

Daily gage height, in feet, at station No. 79 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsofi, observers.]

Day.

1..... ..........

2... ............

3.- .............

4.. ..............

5...............

6...............

7...............

8...............

10...---.........

11...............

12............... 

13...............

15...............

16...............

17............... 

18...............

1Q

20............... 

21...............

22...............

23...............

24...............

25...............

26...............

27. ..............

28. .............. 

29...............

30...............

31...............

Jan.

0.80

.80

80

.81

.80

.80

.78

.78

.70

.65

.60

.60 

.60

.59

.58

.58 

.56

.56

.56

.54 

.51

.50

Feb.

0.50

.50

.51

.51

v\

.50

.50 

.80

.71

.64

.61

.60

.......

"i.'oo"

.83

.......

Mar.

1.12

1.05

.95

.82

.81

.85

.84

.84

.81

1.20 

1.21

1.25

1.18 

1.28

.86

1.25 

.81

80

.83

""."85" 

1.00

.96

.84 

.81

.88

Apr.

1.12

.95

1.15

1.15

1

AQ

1.04

1.29 

1.01

on

.89

""."96"

.91

.91

.94

1 00

1.02

1.10 

1.25

1.25

1.22

May.

i.35

90

.86

fif\

""."es"

.77

.80 

.79

.74

June.

0.60

.57

.59

.......

.65

.58

.72

1.01

1.10

1.01

July.

0.82

.92

.98

.95

.90

.82

1.01

""."95"

1.10

1.00

.92

.91

""."84" 

.95

.85

.82 

.84

.78

.75

Aug.

0.71

1.00

.89

.88

.85

.90

Q1

.89

.90

.98

.81

.92

79

.74

.76 

.75

.70

.88

Sept.

1.09

1.10

1.11

1.04

.95

.84

.91 

.89

.88

.85

.85

.81

.78

.75

.72

.75

.71

.70 

.64

.64

.62 

.65

Oct.

0.72

.79

.76

.74

.70

.70

.72

.69

.81 

.78

.82

.81 "i.'oi"

1.12

1.25

1.30 

1.10

.98

1.51

Nov.

1.08

.86

.86

1.39

1.26 

1.30

1.00

.90

1.46

"i."29"

1.28

1.19 

1.18

1.06

1.10

""."96" 

.86

.82

1.05 

1.09

.95

Dec.

0.90

.90

QQ

.92

.92

90

.84

.83 

.79

.82

.92

1.01

.92 

.95

1.06

1.20

"i.'oo

'

.96 

.95

Daily discharge, in second-feet, at station No. 79-at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1..............

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

0.30

.30

.30

.25

.30

.30

.35

.40

.40

.40

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

0.63

.68

.70

7C

80

.75

1 d.(\

Dec.

0.30

.55

.80

1.05

1.40

80

1 rm

80

1.00

1.40

Day.

21..............

23..............

24..............

25..............

OR

27..............

28..............

30..............

31..............

Nov.

1.40

1.35

1.35

1.35

1.35

1.10

.45

.40

.35

Dec.

0.65

.45

.40

.60

.55

di

41

.45

.55

.50

.45
352 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 79 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

28...............

29...............

30...............

31...............

Jan.

0.70

.70

.70

.70

.70

.70

.70

.70

.70

.70

.70

.70

.60

.60

.40

.30

.30

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.10

.10

.10

.10

Feb.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.70

.40

.30

.20

.20

.20

.80

1.00

2.00

3.00

3.50

2.50

1.40

.80

1 00

1.00

2.00

Mar.

2.00

1.90

1.60

1.20

.80

80

80

on

.80

.80

.70

2 9fl

2.20

2.40

100

1.80

2 in

2.50

on

2.40

on

.70

.80

80

80

1.40

1.20

on

.80

.90

2.00

Apr.

2.00

2.00

1.90

1.20

2.00

2.00

3.50

3.00

2.50

1.80

1 60

2 fin

1.40

1.00

I nn

1.00

1.50

1.00

1 00

1 00

1.20

1 40

1.50

1.80

2.00

2.40

2.40

2.30

1.50

2.00

May.

2.00

2.00

2.00

2.00

2.80

1.50

1.50

1.50

1.00

1.00

1.00

on

.80

.70

.50

.40

4ft

.40

.50

.40

4ft

60

1.50

.70

.70

.70

60

.50

.70

.50

.30

June.

0.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

.20

30

30

.30

on

.20

.20

.20

9K

,50

.70

on

1.00

1.30

i 4n

1 80

1.20

1.00

July.

0.80

1.10

3.00

2.00

1.30

1.20

1.00

80

.80

.80

1.40

1.30

1.20

1.80

1.60

1.50

1 40

1.30

1.10

1.00

1.10

1.10

1.20

1.50

80

1.20

80

on

.80

.60

.50

Aug.

0.40

.40

2.00

1.40

1.00

.90

.90

80

1.00

1.00

1.00

1.00

1.00

1.00

1.30

1.00

.70

.90

1.10

on

.70

60

.50

60

.50

.40

on

.80

.70

.60

.70

Sept.

1.20

1.50

2.00

2.50

1.80

1.80

1.80

1 60

1.20

1.00

.80

1.00

1.00

.90

.80

.80

.70

.60

.50

.50

.50

.50

.40

.40

4ft

.30

.30

.20

.30

1.20

Oct.

1.00

.50

.70

.70

60

.50

.40

4ft

.40

.50

.40

.70

60

.80

on

.70

2.00

1.40

1 90

2.00

9 9ft

2.40

3.00

2.60

1.80

1.30

3.50

3.50

3.50

3.40

3.00

Nov.

3.00

2.00

3.00

2.00

1.70

.90

.90

.90

3.00

3.50

3.50

2.60

1.40

1.00

3.20

3.00

2.60

2.50

2.20

1 60

1.80

1.50

1.00

.90

Of\

1 60

1.80

1.20

Dec.

2.50

3.00

1.00

2.00

1.00

1.00

1.40

1.10

1.10

1.00

.80

on

.70

.80

1.10

1.40

1.10

1.20

1.60

2.80

2.20

2.50

3.50

3.50

1 4ft

2.00

1.50

1.20

1.20

1.00

.80

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 79 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

D on

CO

.04

.77

1 ^11

1 7R

no

Run-off 

(total in 

acre-feet).

30.10

35.40

2.46

44.30

on en

106.00

fit} on

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.56

1 1Q

Sfi

.92

1.52

1.99

1.55

1.15

Run-off 

(total in 

acre-feet).

33.30

73.20

52.90

54.70

93.50

118.00

QC On

815.00

Discharge measurements at station No. 80 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 23... ...................

Gage 

height.

Feet. 

0.82

.70

Discharge.

Sec.-ft. 

0.35

.02

Date.

Nov.8.... ....................

Dec. 28....- .................

Gage 

height.

Feet. 

1.16

1.29

Discharge.

Sec.-ft. 

1.63

2.12

NOTE. Bed of stream of gravel, small cobbles; some bed-rock exposed. Station probably only slightly 

shifting. One channel.
ISLAND OF HAWAII. 353

Daily gage height, in feet, at station No. 80 at %,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

1. ..............

2...............

3...............

4...............

5. ..............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

16...............

17...............

18...............

19...............

20............... 

21...............

22............... 

23...............

24............... 

25...............

26............... 

27...............

2g. ..............

29...............

30

31...............

Jan.

.90

on

.94

.85

.85

.84

0,4

.70

.52

.50

.45 

.45

.44

.42

Af\

.40 

.41

.36 

.34

34

Feb.

(a)

(«)

(«)

(«

(«)

(«)

(a)

0-88 

.79

.......

"i."37"

.98

Mar.

1.31

1.25

1.05

.82

.95

.98

.98

.99

1.45

1.52 

1.55

1.36

1.59

1.01

1.40 

.96

.91

.98

Q8

1.22 

1.17

.99 

.97

1.08

Apr.

1.62

1.52

1.38

1.39

1.48

1.39

1.11

1.12

1.29

1.22

1.31

1.36 

1.37

1.40 

1.45

1.51

1.58 

1.53

1.49

May.

1.58

1.10

.99

.88

.78

-------

.80

.81

.78

.70

June.

0.68

.60

.61

......

.64

.82

.......

1.01 

1.12

1.01

July.

0.95

1 nfi

1.10

1.05

1.01

.91

1.02

1 97

1 1ft

QQ

.80

no

.97 

.94

.91 

.92

.88

.82

Aug.

1.19

1.10

1.01

.99

1.02

1.04

""t>A

1.01

.90

1.04

""."82"

.85 

.84

.71 

.92

Sept.

1.43

1.44

1.50

1.36

1.06

1.02

1.21

1.19

1 18

1.14

1.14

1.00

.98

.88

.89 

.84

.83

.71 

.70

.69 

.70

Oct.

0.88

.91

.86

.84

80

.79

.80

.98

.94

.92

1.18

1 ^fi

1.51

1.58

1.16

.......

1.71

Nov.

i A.n

1 19

1.18

1.52

1.58

1.61

1.23

1.72

1.59

1 17

1.48 

1.40

1.40 

1.52

1.18 

1.11

1.36 

1.40

1.21

Dec.

1.25

1.18

1.28

1.26

1.25

1.16

1.11

1.10 

1.11

1.15

1.31

1.16

1.05

1.20

1.40

"i.'ii

1.29 

1.28

« Channel dry.

Daily discharge, in second-feet, at station No. 80 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

1.16

.92

.76

.60

.64

.64

.68

80

.96

80

Day.

11..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov

1.88

2.00

o on

5.00

Dec.

0.60

1.96

2.68

3.75

1.88

2.40

1.88

2 80

Day.

21..............

22..............

23..............

24..............

25..............

28..............

27..............

28..............

29

30..............

01

Nov.

3.05

3.00

3.00

2.96

2.96

1.96

1.48

1.48

1.72

1.40

Dec.

1.48

1.00

1.00

1.48

1.08

1.00

1.00 i.ro

1.08

1.00

14694° WSP 336 14
354 WATER RESOURCES OF HAW AH, 1912.

Daily discharge, in second-feet, at station No. 80 at %,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. ...... .......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24... ............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

0.60

.60

.60

.60

.60

.60

.60

.75

.60

.50

.45

.45

.40

.40

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05 

.05

Feb.

(«)

a)

a)

a)

0)

(a

(a

(a

(a

w

w(°)

0.55

.30

.05

.05

.05

.05

.05

.20

2.00

3.50

4.50

3.00

2

0C

90

.80

.70

60

.......

Mar.

2.60

2 00

2

OE

2 on

1.20

.35

SO

80

.90

90

.95

2

CA

3.10

3.25

3.00

2.70

2.45

3

AfL

1.04

2.60

.85

.65

.90

QA

Qft

i on

1.70

.95

on

1.30 

2.50

Apr.

3.00

3 An

3.60

3.10

2.50

2.55

4 00

3.80

3.50

2 on

2.55

1.45

1 KA

1.90

1.15

1 40

1.65

i Qft

2.45

2

CA

2 60

2.80

3 AC

3

OA

3 Aft

3

1 C

2 95

2.80

2.90

May.

3.00

3 on

2.50

3 no.

S

jn

3.00

2 60

1.40

.05

.85

.65

.55

40

OK

.25

30

OA

.30

SO

OK

30

OC

.15

.05

.05

.05 

.05

June.

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.10

.15

.20

.30

oc

1ft

.50

60

.70

80

1.05

1.55

1.05

1.00

.90

July.

0.80

1 oc

3.00

2

0A

1 40

1.20

1.05

.85

.65

.60

3 nn

1.50

1.10

2 00

1 80

1.70

1 9ft

.55

.30

OA

40

.50

.60

.70

on

.75

.65

.70

.55 

.35

Aug.

0.30

.30

2.00

I

fJC

1 4ft

1.20

1.05

Qt

1.10

1.15

1.10

1.00

1 nn

.95

1

f*K

80

60

.90

1.15

.60

CA

40

qc

.45

40

.10

.65

CA

40

.30 

.50

Sept.

2.50

3.00

3.50

4.00

2.70

2.75

3 nn

2.45

1.25

1.20

1.10

1 ftp*

1.75

1.70

1.55

1.55

i sn

1.00

.95

.75

.55

.60

.40

40

.30

.10

05

.05

.05

.20

Oct.

0.60

.55

.60

.65

.50

.40

.30

9A

.30

.35

.30

 )()

7C

.85

An

.70

2.00

1.70

2 on

9 *>ft

2 Oft

3 AC

4.30

3 Aft

2 60

1.65

4.50 i M

4.30

4.05 

3.00

Nov.

2.00

2.50

3.00

2 sn

2.60

2.20

1.75

1.70

3.10

4.30

4.20

q An

3.55

2.45

1 95

4.10

3.80

3.45

3.35

2.90

2.60 9 fin

3.10

2.50

1 QA

1.70

1.45

2.46

2.60

1.85

Dec.

2.00

3.00

2.60

2.30

2.00

1.70

1.80

2.10

2.05 9 nn

1.65

1.46

1.40

1.45

1.60

2.25

1.65

1.20

1.80

3.00

2.60

3.00

4.00

3.00

1.55

2 (VI

2.10

2.15

2.10

1.00 

1.00

a Channel drv.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 80 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

November 14-30. ... ..........

December ....................

1912.

March.. .. ......

April.........................

Mean 

discharge 

in secondfeet.

2.34

1.36

.28

.67

1.68

1.10

Run-off 

(total in 

acre-feet).

82.30

83.50

17.20

qo en

103.00 i EC nn

67.60

Month.

1912 Continued.

.July..........................

Mean 

discharge 

in secondfeet.

0.35

1.12

QA

1.42

1.75

2.73

2.05

1.38

Run-off 

(total in 

acre-feet).

20.80

68.90

49.20

84.50

108.00

162.00

126.00

1,000.00
ISLAND OF HAWAII. 355

Discharge measurements at station No. 81 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

flfinf 9Q

Gage 

height.

Feet. 

0.70

.68

Discharge.

Sec.-ft. 

1.83

.73

Date.

Nov. 8.......................

Dec. 28. ......................

Gage 

height.

Feet. 

0.91

.97

Discharge.

Sec.-ft. 

3.90

3.93

Bed of stream of sand and gravel with some small cobbles; station shifting. One channel at all stages.

Daily gage height, in feet, at station No. 81 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

1.. .............

3...............

4...............

5.. .............

6...............

7...............

8...............

9...............

10...............

11...............

12.. ............. 

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24.. .............

25...............

26:.............. 

27...............

28...............

29...............

30...............

31...............

Jan.

0.70

.70

.70

.72

.70

.70 

.70

.70

60

.50

.44

.44

.44

.44

.44

.42

.42 

.42

.38

.35

.35

Feb.

0

00

.31

.31

.31

.32

.31

.31 

.70

.60

48

.44in

1.10

.92

Mar.

1.20

1.10

1.09

.81

.75

.82

.82

.81

.87

1.36

1.14

1.08

1.14

.98

1 <ift

.86

.88

.85

1.10 

1.03

.82

.78

.86

Apr.

1.16

1.19

1.19

1.22

1.20

1.12

1.14 

1.30

.98

.89

88

.89

89

.88

.92

.94

1.00

1.10 

.99

.96

May.

1.10

.88

.79

.88

.80

.70

.71

.70

.68

June.

0.60

.58

.60

.69

.61

on

1.08 

1.10

1.08

July.

0.88

.97

1.00

.98

.92

.91

1.11

""."92"

1.19

.98

.96

.82

.89

.84

.81

.82

.76

.70

Aug.

0.65

1 08

.96

.86

.85

.90

.91

.89

.92

.98

.81

1.01

.70

.74

.71

.65 

.89

Sept.

1.24

1.25

1.28

1.14

1.00

.96

1.08

1.03

.99

.99

.92

.82

.80

.72

.74

.71

.66

.61

.58

.54

.58

Oct.

0.81

.81

.78

.69

.66

.66

.71

.69

.86

.82

.90

.90

1.06

1.22

1.42

1.52

1.24

1.08

1.78

Nov.

1.35

.90

.91

1.88

1.32 

1.42

1.05

92

1.75

1.38

1.38

1.33

1.20

1.17

1.22

.95

.91

.88

1.11

1.19

1.01

Dec.

0.90

.90

.90

.98

.90

.86

.81

.80

.79

.81

.85

1.10

1 00

1.02

1.18

1.30

1.05

.99

1.00

Daily discharge, in second-feet, at station No. 81 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1. .............

2..............

3..............

4. .............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

2.3

2.1

1.9

1.0

1.3

1.3

1.3

1.8

2.1

1.8

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

5.0

12.6

5.2

8.2

11.2

32.0

13.4

Dec.

1.5

11.4

16.0

8.2

10.6

8.2

10.6

12.2

Day.

21..............

92

23..............

24..............

25..............

26..............

27...............

28..............

29..............

30..............

31..............

Nov.

13.4

10 o

13.2

13.0

13.0

10.0

3.4

3.4

3.3

2.4

Dec.

3.4

2.8

2.3

3.4

3.2

2.8

2.7

2.7

2.5

2.5

2.5
356 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 81 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1...............

2....... ........

3...............

4...............

5...............

6...............

7...............

8. ..............

9...............

10...............

11...............

12...............

13...............

14...............

15. ..............

16. ..............

17...............

18. ..............

19...............

20. .............. 

21...............

22...............

23...............

24. ..............

25...............

26...............

27...............

28. ..............

29. ..............

30. ..............

31...............

Jan.

1.40

1.40

1.40

1.40

1.40

1.40

1.40

1.60

1.50

1.50

1.40

1.40

1.40

.70

.30

30

.20

on

.20 

.20

9ft

.20

.20

.10

.10

.10

.10

.10

.10

.10

Feb.

0.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

.10

1.40

.70

.30

.20

.10

.10

.10

2.00 

14.00

20 00

26.00

18.00

7.00

3.70

3.00

3.00

Mar.

6.00

9.00

7.00

6.80

1 80

2.50

2

K.(\

3 m

19 f\t)

7 80

6.60

7 ^ft

8.50

9 Af\

7 80

4 70

11.00 

3.00

2.70

3.20

3.00

9 sri

7.00

5.60

2.50

2.10

3.00

15.00

Apr.

10.00

9.00

8.20

8.80

8.80

9.40

18.00

16.00

9.00

7.40

7.80

11.00

4.70

3.30

3.30

3.20

3.20

3.30

3.30 

3.20

3.70

4.00

5.00

7.00

4 80

4.40

3.00

4.00

May.

5.00

5.50

5.00

6.00

7.00

6.00

5.00

4.00

3.20

2.70

2.20

2

Af\

2.70

3.00

3.20

2-80

2.30

2 00

1.70

1 40

1.40

1.50

1.50

1 4/i

1 40

1.30

1.30

1 00

.80

June.

0.70

.70

.70

.60

.60

.60

.70

.70

.70

.80

.90

1.20

1.30

1.00

.80

1.00

1.50

2

K.f\

3.40 

4.00

5.00

5.00

6.00

6.60

7.00

6.60

5.00

4.00

July.

3.20

4.50

8.00

6.00

5.00

4.70

3.70

3.60

3.60

5.40

7.20

5.40

3.70

8.80

7.70

6.50

5.40

5.00

4.40 

4.00

3.60

3.20

2.80

2.50

3.30

2.70

2.40

2.50

1.90

1.40

Aug.

1.20

1.10

8.00

6.60

4.40

3.70

3.00

2.80

3.40

3.60

3.40

3.30

3.50

3.70

4.70

3.60

2.40

3.80

5.20

2.00 

1.80

1 60

1.40

1.80

1.50

1.10

3.30

3.00

2.50

2.00

3.00

Sept.

9.00

10.00

16.00

18.00

9.80

10.00

11.00

7.80

5.00

4.70

4.40

6.60

5.80

5.60

4.80

4.80

3.70

2.50

2.30

2.00 

1.60

1.80

1.50

1.10

1.00

.80

.60

.50

.60

4.00

Oct.

3.00

2.40

2.40

2.40

2.10

1.30

1.10

1.10

1.30

1.50

1.30

3.00

2.50

3.40

3.40

3.40

10.00

6.20

11.00 

12.00

20-00

15.00

10.00

6.60

26.00

25.00

22.00

21.00

Nov.

20.00

19.00

18.00

15.00

12.00

8.00

3.40

3.60

25.00

26.00

25.00

11.00

13.00

6.00

3.70

22.00

13.00

13.00

12.00 

9.00

8.40

9.40

7.00

4.20

3.60

3..20

7.20

8.80

5.20

Dec.

12.00

18.00

10.00

6.00

3.40

3.40

3.40

4.70

3.40

3.00

2.40

2.30

2.20

2.40

2.80

7 00

5.00

5.40

8.60

15.00 

11.00

25.00

16.00

6.00

9.00

6-00

4.80

5.00

4 00

3.00

NOTE. Daily discharge determined from rating curve fairly well denned except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 81 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

)

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

10.30

4.43

.75

3.58

R 00

2.86

Run-off 

(total in 

acre-feet).

348

252

46.10

206.00

339.00

416. 00

176.00

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

2.49

4.41

3 1 1

5.24

8.64

12.00

7.36

1 94

Run-off 

(total in 

acre-feet).

148.00

271.00

191.00

312.00

531.00

714.00

453.00

3,800.00

Discharge measurements at station No. 82 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Sept. 29......................

Gage 

height.

Feet. 

0.60

.53

Discharge. -

Sec.-ft.

Date.

Dec. 28. ......................

Gage 

height.

Feet. 

0.64

.60

Discharge.

Sec.-ft. 

0.08

0

NOTE. Bed of stream of silt, sand, and gravel; shifting. One channel.
ISLAND OF HAWAII. 357

Daily gage height, in feet, at station No. 82 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

IBomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1...... .........

2...............

3......... ......

4...............

5............... 

6...............

7...............

8...............

9...............

10.. .............

11...............

12...............

13...............

14. ..............

15...............

16...............

17...............

18...............

19. ..............

20...............

21...............

22...............

23...............

24...............

25 . .

26...............

27...............

28............... 

29...............

30. ..............

31...............

Jan.

0.60 

.60

.60

.65

.60

.60

60

.60

.58

.55

.55

.55

.55

.54

;52

.52

.51

.51

.52

.45

49

40

Feb.

J.>

(«)

(a)

(a)

(a)

(a)

(a)

0.62

.61

.59

fa)

(a)

.80

.68

Mar.

0.88

.85

.92

.72 

.65

.72

.73

.74

.59

.76

.69

.58

.71

.59

.46

.80

.42

.41

.48

.76

.82

.77

.62 

.59

.68

Apr.

0.71

.94

.85 

.89

.73

.71

.76

.84

.71

.71

.75

.75

.75

.74

.80

.85

.98

1.00

.95

.89

May.

1.20

.78

.75

.88

.73

.60

.61

60

.58

June.

0.55

.50

.51

.60

.56

.60

.68

.71

.68

July.

0.60

.71

.75 

.72

.68

.62

.85

.70

.78

.70

.64

.65

.64

.71

.65

.61

«o

.61

.60

Aug.

0.61

.71

.68

.64

.61

.70

.71

.69

.72

.75

.62

.70

60

.62

.61

.58

.68

Sept.

0.90 

.91

.95

' .88

.79

.75

.85

.78

.76

.72

.72

.66

.60

.59

.58

.59

.55

.54

.52

.51

.51 

.54

Oct.

0.60

.60

.59 

.58

.56

.56

.59

.55

.68

.65

.69

.70

.74

.82

.90

.88

.81

.76

.:.....

.98

Nov.

0.85

.61

.68

.80

.85

.70

.64

.96

.88

.80

.76

.74

.74

.82

.65

.62

.62

.79

.78

.68

Dec.

0.72 

.68

.68

.70

.70

.65

.64

.61

.60

.62

.68

.76

.70

.71

.84

1.00

.75

.62 

.62

a Channel dry. 

Monthly discharge at station No. 82 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

May..........................

Mean 

discharge 

in secondfeet.

a 0.10

o.lO

.01

.01

.09

.09

.04

Run-off 

(total in 

acre-feet).

5.95

6.15

.60

.80

5.60

E Af\

2.40

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.03

.04

.05

.05

.07

.07

.06

.05

Run-off 

(total in 

acre-feet).

1.80

2.60

2.80

3.20

4.40

4.20

3.60

37.40

a Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall 

record at camp near station No. 50.

Discharge measurements at station No. 83 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 23.. .....................

Sept. 29.... ..................

Gage 

height.

Feet. 

0.85

.80

Discharge.

Sec.-ft. 

0

Date.

Nov.15... ....................

Gage 

height.

Feet. 

0.80

.64

Discharge.

Sec.-ft. 

0.02

0

NOTE. Bed of stream of silt, sand, and gravel; shifting. One channel.
358 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, at station No. 83 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2............... 

3...............

4...............

5...............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14. ..............

15............... 

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26. .............. 

27...............

28............... 

29...............

30...............

31...............

Jan.

0.90

.90 

.90

.91

.88

.88

.88

.88

.85 

.84

.80

.80

.80

70

.78

.78

.76

.76 

.76

.74 

.71

.70

Feb.

(«)

(«)

W

n(a)

(a)

(»)

0.90

.80

.71 

.66

.00

.90

.79

Mar.

0.90 

.96

.90

.81

.80 

.96

.94

.92

.95

on

.96

1.01

.88

i no

.96

QQ

.95

01

.97

.94

.91 

.96

.82 

.79

.88

Apr.

0.95

1.08

.99

1.10

1.20

1.10

1.06

QQ

.90

.90

.90

.91

Q1

Q<t

QE

.91

1.01

1.10 

1.00

.99

May.

1.20

.89

70

.88

.87

.89

.90

.88

.80

June.

0.70

.65

.70

.76

fiQ

.74

.81 

.90

.81

July.

0.85

.93

1.00

.95 

.90

.81

1.00

01

08

.85

.80

7Q

.82

.90

.84

.81

.84

.82

.81

Aug.

0.82

1.05

.98

"".91

.90

.90

.91

on

.92

.96

.89

.93

.86

.89

.88

.82 

.91

Sept.

0.88

.90 

.98

94

.90

.78

on

.88

.86

.83 

.84

.83

.80

.76

.75

01

.80

.80

.80 

.80

.80 

.80

Oct.

0.82

.84

.82

.81 

.80

.81

.80

.78

.80

.79

.80

.81

.91

.99

.89

.82

.81

.80

84

Nov.

0.81

""."so"

.80

.81

.81

.80

.80 

.84

.88

.84

.81

. .81

.78

.81

.70

.69 

.69

.73

.72

.70

Dec.

0.70

.60

.68

.72

.69

.62

.65

64

.54

.61

.65 

.70

.61

.65

.72

.81

.90

.68 

.68

o Channel dry. 

Monthly discharge at station No. 83 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

oQ.03

o.05

.003

.003

.02

no

.006

Run-off 

(total in 

acre-feet).

1.78

3.08

.20

.20

1.00

1.00

.40

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.007

.006

.006

.010

.010

.010

.010

.01

Run-off 

(total in 

acre-feet).

0.40

.40

40

.60

.80

.60

.60

6.60

a Estimated.

NOTE. Mean monthly discharge estimated directly from gage heights and measurements. Discharge 

for periods for which gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp near station No. 50.
ISLAND OF HAW AH. 359

Discharge measurements at station No. 84 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen,hydrographer.]

Date.

Aug. 23........ ...............

Sept. 29.. .....................

Gage 

height.

Feet. 

0.22

.23

Discharge.

8ec.-ft. 

0

Date.

Kov.15.... ...................

Dec. 29. ......................

height.

Feet. 

0.34

.30

Discharge.

See.-ft. 

0.08

.06

NOTE. Bed of stream of silt, sand, and gravel; shifting. One channel.

Daily gage height, in feet, at station No. 84 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayefl, Selitonott, and Kuznetsoff, observers.]

Day.

1. ..............

2............... 

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19............... 

20...............

21...............

22............... 

23...............

24...............

25...............

26............... 

27............... 

28...............

29...............

30. ..............

31...............

Jan.

0.30

.30

.30

.31

.25

.25

.24

.24

.22

.21

.18 

.15

.15

.15

.12

.12

.11

.11 

.11 

.09

(0)

(0)

Feb.

.......

(°) W

(°)

(°)

(0)

(a)

(a)

0.30

.24

(0)

(°) M

------

.31 

.26

Mar.

0.35 

.35

.32

.30

9ft

.35

.36

.35

.36

.44

46

.50

.41

.55

.40 

.45

.32

.33 

.36

.36

.35 

.32

on

.28

.34

Apr.

" "6."50"

.60

.58

.61

.70

.65

.61

.51

.32

.40

.45

.51 

.55

.61

.58 

.61

.65

.70 

.61 

.61

May.

.......

0.90

60

.58

.39

.28

.28

.30

.25 

""."26"

June.

0.15

.11

.20

90

.20

""."22"

.......

.35 

.41 

.35

July.

0.25

.34

.38

^a

.30

90

.45

01

.38

.32

.32 

.31

.......

.30

.32 

.31

90

^11

.29

99

Aug.

0.26

.42

.39

.31

.30

.32

.34

.31

1A.

.36

.29

.32

""."25"

9ft

.25

.22 

.32

Sept.

0.39

4ft

.44

.38

.34

.31

.34

.31

.31

.29

.32

.30

.29

.28 

.25

.26 

.25

.25

.24 

.22 

.22

.23

Oct.

0.25

.28

.26

.24

.22

.24

.25

.22

.30

.28

.31

.32

.41

.49

.49

.42

.35 

.30

.55

Nov.

.......

0.38

.31

.32

.40

.42

.35

.34

.53

.44

.40 

.38

.38

.36

.38

.34

.31 

.31

.38

.38

.34

Dec'.

......

0.31

vi

.30

.32

00

31

.31

.30sft

.34

.39

.46

.41

.44

.55 

.68

.41 

""."36

.30

a Channel thy.

Daily discharge, in second-feet, at station No. 34 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. .............

2.............. 

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

0.05

.05 

.05

.05

.05

.05

.05

.05

.05

.05

Day.

11..............

12.............. 

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20.. J. ..........

Nov.

0.30

.22

99

.27

.33

.45

.37

Dec.

0.05

.16

OJ

.52

.73

.60

.67

.72

.73

.82

Day.

91

22..............

OQ

24..............

25..............

26..............

97

28..............

9Q

30..............

31..............

Nov.

0.37

.36 ^id

.33

.32

.28

.05

.05

.05

.05

Dec.

ft 79

.60 

.45

.63

.60

.60

.52

.52

60

.57

.52
360 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 84 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

\..... ..........

2. ..............

3...............

4...............

5...............

6...............

7...............

8............... 

9...............

10. ..............

n. ..............

12...............

13............... 

14...............

15...............

16. ..............

17...............

18........:......

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26. ..............

27...............

28...............

29...............

30. ..............

31...............

Jan.

0.05

.05

.05

.05

.05

.05

Feb.

0.05

Mar.

0.10

.10

.10

.05

.10

.10 

.10

.10

.10

.20

.25 

.30

.20

.20

.15

.40

.15

.20

.05

.10

.10

.10

.10

.10

.05

.05

.05

.10

.70

Apr.

0.50

.40

.30

AK

.40

.45

.70

.65 

.65

.60

.50

.45

.30 

.05

.15

.20

.20

.20

.30

Af\

.45

.40

.45

.50

.50

.60

.45

.45

.30

.30

May.

0.30

.30

.50

.70

.90

.80

.60

.50 

.50

.45

.40

.40

.30 

.20

.20

.15

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

June.

" '6.~05"

.10

.15

.10

July.

0.05

.10

.30

.20

.15

.15

.05

.05 

.05

.10

.20

.10

.05 

.15

.10

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Aug.

0.05

.05

.05

.20

.15

.10

.05

.05 

.05

.10

.10

.05

.10 

.10

.10

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

Sept.

0.20

.30

.40

.60

.15

.15

.20

.15 

.10

.10

.05

.10

.05 

.05

.05

..05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.05

.20

Oct.

0.10

.05

.05

.05

.05

.05

.05

.05 

.05

.05

.05

.05

.05 

.05

.05

.05

.50

.15

.30

30

.30

.30

.60

.20

.10

.05

.90

.80

.60

.40

.20

Nov.

0.30

.40

.50

.20

.15

.10

.05

.05 

.05

.10

.15

.15

.20 

.10

.10

.35

.30

.20

.15

.15

.15

.10

.15

.10

.10

.05

.05

.15

.15

.10

Dec.

0.30

.60

.40

.10

.05

.05

.05

.05 

.05

.05

.05

.05

.05 

.10

.15

.25

.15

.25

.40

.50

.70

.80

.90

.60

.15

.20

.10

.05

.05

.05

.05

NOTE. Daily discharge determined from poorly defined rating curve. Discharge for days for which 

gage heights are missing estimated by means of rainfall diagram prepared from rainfall record at camp 

near station No. 50.

Monthly discharge at station No. 84 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911.

1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

0.28

39

.02

.05

.15

.41

.26

Run-off 

(total in 

acre-feet).

9.32

24.20

1.23

2.88

9.22

94 4fl

16.00

Month.

1912. Continued.

July..........................

Mean 

discharge 

in secondfeet.

0.05

.09

.07

.12

.21

.16

.24

.15

Run-off 

(total in 

acre-feet).

2.98

5.53

4.30

7.14

12.90

9.52

14.80

111.00
ISLAND OF HAW AH. 361

Discharge measurements at station No. 85 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 23......................

Sept. 29......... .............

Gage 

height.

Feet. 

0.75

.72

Discharge.

Sec.-ft.

1.47

.38

Date.

Nov.15..... ..................

Dec. 29. .....................

Gage 

height.

Feet. 

0.85

.80

Discharge.

Sec.-ft. 

2.96

2.04

NOTE. Bed of stream of sand and small cobbles; probably slightly shifting. One channel.

Daily gage height, in feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsofl, observers.]

Day.

1...............

3...............

5.............. 

6...............

7...............

8.... ......... ..

9..-......--..-. 10...... ........ -

11...... .........

12...............

13...............

14...............

15..............

16...............

17.......:.......

18........--..-..

W

'

20...............

21,. .............

22.............. 

23..............

24..............

25..........-.---

26.............. 

27........---...

28.............. 

29..........-.--.

30...............

31...............

Jan.

0.75 

.75

.75

.80

.71

.71

.70

.70

.70

.70

.70

.70

.70

.69 

.68

.68

.66

.66 

.66

.64 

.62

.61

Feb.

0.61

.61

.65

.65

.61

.61

.60

.72

.71

.69

.69

.69

.......

.90

.81

.......

Mar.

1.00

.95

.96

.80 

.78

.85

.89

.88

.87

.98

1.12

1.18

.82

1.20

.85

.85

.82

.80 

.86

.88

.91 

.88

.80

.78

.86

Apr.

1.00

1.00

1.02 

1.16

1.18

1.18

1.09

.98

.83

.81

.90

Q1

.91

QA

.98 

.99

1.10

1.25 

1.18

1.12

May.

1.38

98

.88

fiQ

.87

.75

.81

.79

.78

June.

0.70

.70

.71

.80

.78

.80

.......

.80

Qfl

.80

July.

0.88

.87

.90

.88

.83

.80

1.07

.85

1.02

.91

.84

.86

-------

.81

.82 

.82

.79 

.81

79

.78

Aug.

0.72

.98

.94

.81

80

.88

QQ

.85

.88

.94

80

on

""."75"

.76

.74

.71

Kft

Sept.

0.96 

.98

1.01

.94

.91

.88

.90

.88

.86

.82

.84

.82

.80

.78

.75

.78 

.75

.74

.72 

.72

.71

.72

Oct.

0.80

.81

.79

.76

.75

.75

.74

.71

.82

.81

.85

.84

.98

' 1.09

1.05

.95

.84

.......

1.21

Nov.

0.96

.82

.84

1.01

1.08

.91

.84

1.18

1.11

1.02

.96

.95

.91

.96

.88

.84 

.82

.95 

.96

.85

Dec.

6.85 

.80

.85

.98

.90

.88

.75

.80

.79

.81

.92

.95

.84

.90

1.01

1.11

.95

.88 

.80

Daily discharge, in second-feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. .............

2.............. 

3.............. 

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov.

........

Dec.

1.04

1.04 

1.04 

1.04

1.38

1.38

1.20

1.74

2.28

1.74

Day.

11..............

12.............. 

13.............. 

14..............

15..............

16. ............

17..............

18..............

19..............

20..............

Nov.

"~3.W

5.40

5.40

5.80

6.20

18.90

14.90

Dec.

1.20

2.46 

3.72 

5.60

iq Afl

4.26

6.20

6.20

9.22

Day.

21..............

22.............. 

23.............. 

24..............

9^

26..............

27..............

28..............

29. ............ -

30. ............ .

31..............

Nov.

14 90

14.70 

14.50 

14.30

14.30

10.10

2.10

2.10

1.92

1.04

Dec.

2.10 

1.74 

3.00

2.28

2.10

2.10

2.10

2.46

2.10

2.10
362 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 85 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11.... ...........

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

1.20

1.20

1.20

1.20

1.20

1.20

1.20

2.10

1.20

1.20

.55

.55

.40

.40

.40

.40

.40

.40

.40

.40

.40

.30

 .25

.25

.10

.10

.10

.10

.10

.10

.10

Feb.

0.05

.05

.05

.05

.05

.05

.05

.05

05

.05

.05

.05

.70

.55

.30

sn

in

30

1.00

3.50

8.00

12.00

H *£\

9.00

8.90

2.25

4.00

4.50

5.00

.......

Mar.

5.00

5.80

4 80

5.00

2.10

1.70

3.00

3.50

3 7ft

3

CA

3.35

5 Of)

8.30

9 AC

7 00

4 00

O Eft

10.10

3.00

s net

2.50

2.10

3 9ft

2.50

3.50

4.10

3 eft

2 10

1.70

3.20

-10.00

Apr.

7.00

6.00

5

QA

5

QA

6.20

9 20

H en

13.00

12.00

9

fiC

9.65

7.70

5 no

2 Cft

2

0A

2 Eft

5.00

3 90

4.10

4.10

4.60

5.00

5 eft

7 on

10.00

11.20

9

ftc

8.30

6.00

6.00

May.

7 00

8 no

6.00

9 00

14.10

11.00

5.00

5.60

5.00

^ nn

4.00

3 Cft

3.00

2 Aft

1.00

Oft

Cft

3.35

2.00

1.00

1.00

1.20

3 fin

2 tfi

2.00

1.90

i sn

1.70

1.80

1.40

1.00

June.

0.40

.40

.40

.40

.40

.40

.50

.55

.60

.60

.60

.60

.60

2.10

i on

1.70

1 Rft

1.90

2.00

2.10

2.10

2 1ft

2.10

2.10

2.10

2.10

S on

2.10

2.50

2.50

July.

S sn

3.35

6.00

4.00

3.90

3

CA

2.60

2.20

2

1ft

2.10

7.20

>; nn

3.00

6.20

5.00

4.00

4.10

3.50

2.80

3.20

2.00

3 Art

4 00

3.00

2.30

2.50

2

cft

1 90

2.30

1.90

1.70

Aug.

1.50

.70

7 00

5.00

4.60

3.00

2.30

2.10

3.50

3.70

3.30

3.00

3.30

3 Cft

4 60

2 ftft

2.50

3.90

9 »n

2.(XL

1.201

1.20

1.40

1.00

.60

2

1ft

4.00

3.00

2.50

3.00

Sept.

. 5.00

6.00

9 fin

13.00

5.00

6.00

4.60

» Sfl

3.50

3.90

3.50

3.20

2.50

2 Sfl

2 ^n

2.10

1.70

1.40

1.20

1.70

1.20

1.00

.80

.70

. .70

.55

.70

4.00

Oct.

3.00

2.10

2 Cft

2.30

1.90

1.40

1.20

1.20

1.00

1.00

.55

2.56

2.30

3.06 9 on

2.80

4.00

5.00

6.50

6.00

6.50

7

£C

9 ftft

6.80

4.80

2.80

H CA

18.00

11.00

10.30

8.00

Nov.

8 m

5.00

10.00

6.00

i nn

2 nn

2

CA

2.80

5.00

14.00

12.00

6.00

7.45

4.10

9 Sfl

9 fit

12.00

8.10

6.20

5 no

4.80

4.10

S on

4.20

3.50

2.80

2

<y»

4.80

5.00

3.00

Dee.

7.00

12.00

5.00

6.00

3.00

9 in

3.00

5.00

3.90

3

KA,

1.20

i on

0 OA

4.25

4.80

2.80

3 on

6.00

9 nn

8.10

10.00

H CA

12.00

4.80

7.00

5.00

3

CA

2.10

2.00

1.00

NOTE. Dally discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 85 at 2,700-foot level, near Hilo, Hawaii, for 1911-1%.

Month.

1911. 

November 14-30 ..............

.1912.

April.........................

May..........................

Mean 

discharge 

in secondfeet.

8.85

3 1ft

.62

2.44

4.27

7 00

3.70

Run-off 

(total in 

acre-feet).

299

192

38.10

140

263

417

228

Month.

1912 Continued.

July.........................

Mean 

discharge 

in secondfeet.

1.45

3.37

2 7Q

3.38

4.76

5.78

5.12

3.72

Run-off 

(total in 

acre-feet).

86.30

207

201

293

344

315

2,700

Discharge measurements at station No. 86 at 2,700-foot level, near Hilo, Hawaii, in 1912. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 23.......................

Sept. 29... .................

Gage 

height.

Feet. 

1.54

1.46

Discharge.

Sec.-ft. 

2.29

.68

Date.

Nov.15.. ....................

Gage 

height.

Feet. 

1.69

1.68

Discharge.

Sec.-ft. 

6.31

5.90

NOTE. Bed of stream of sand and small cobbles; probably slightly shifting. One channel.
ISLAND OF HAW AH. 363

Daily gage height, in,feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomin, Bilikov, Goorko, Belayeff, Selitonott, and Kuznetsoff, observers.]

Day.

\.. .............

2.. .............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12. ..............

13...............

14...............

15............... 

16...............

17. ..............

18...............

19...... .........

20............... 

21...............

22...............

23...............

24...............

25..

26...............

27............... 

28............... 

29...............

30...............

31...............

Jan.

1.52

1.52

1.52

1.52

1.45

1.45

1.44

1 44

1.42 

1.41

1.40

1.40 

1.40

1.38

1.38

1.38

1.36

1.36

1.36 

1.35 

1.34

1.34

Feb.

1.28

1.28

1.25

1.25

1.24

1.24

1.22

1.50

1.48

1.40 

1.36

1.32

.......

1.65

1.51

Mar.

1.82

1.75

1.70

1.58

1.75

1.71

1.71

1.77

1.85

.......

1.78

1.85

1.90 

1.84

1.78

1.86

1.66

1.71

1.66 

1.59 

1.56

2.01

Apr.

1.70

1.70

1.80

1.90

2.30

9 78

I

co

1 sn

1.70

1.71

1.83

1.%

1.95 

1.96

2.04

2.05

2.15

2.15

2.08 

1.90

May.

2.29

1.80

1 70

1.71

1 «7

.......

1.52

1.60

1.50 " i.'io

June.

1.38

1.30

1.50

1.60

1.45

1.50

1.58

1.71 

1.58

July.

1.59

1.69

1.71

1.68

1.65

i.60

1.90

1.61

1.80

1.68

1.56

1.52

1.61

1.60

1.62 

1.59 

1.51

1.51

1.50

Aug.

1.60

1.74

1.68

1.59

1.54

1.60

1.65

1.60

1.68

1.78

1.59

1.72

1.54

1.55

1.54

1.50

1.71

Sept.

1.84

1.75

1.95

1.72

1.69

1.66

1.70

1.64

1.62

1.61 

1.68

1.64

1.60

1.58

1.55

1.56

1.52

1.51

1.50

1.49 

1.48 

1.46

Oct.

1.60

1.59

1.55

1.54

1.51

1.50

1.64

1.52

1.64

1.59

1.61

1.62

1.72

1.82

1.95

1.98

1.72

1.68

2.01

Nov.

1.78

1.68

1.69

1.90

1.91

1.74

1.70 

2.08

1.89

1.92

1.78 

1.76

1.76

1.75

1.70

1.68

1.65 

1.78 

1.80

1.70

Dec.

1.70

1.68

1.70

1.88

1.70

1.65

1.59

1.53

1.48

1.48

1.53 

1.72

1.59

1.61

1.72

1.85

1.69

"i.~72 

1.69

Daily discharge, in second-feet, at station No. 86 at 2,700-foot level, near Hilo, 'Hawaii,

for 1911,

Day.

1. .............

2..............

3..............

4. .............

5..............

6..............

7..............

8..............

9..............

10..............

Nov.

........

Dec.

3.22

9 *tft

2.28

1.84

1.84

1 84

1.B2

3.46

4.26

3.46

Day.

11.............. 

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

911

Nov.

6.60

14.60

12.00

11.60

10.80

30.00

10.80

Dec.

2.28 14 an

31.60

48.00

81.20

32.40

38.00

36.00

40.00

45.20

Day.

21.............. 

22..............

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

10.80 

11.20

11.60

12.00

12.00

7.88

5.10

5.10

5.25

4.26

Dec.

6.00 

2.50

2.50

.10

.10

.10

.10

.10

.10

.10

.10

Daily discharge, in second-feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

T., .............

%...............

9...............

10...............

11...............

12...............

13............... 

14...............

15...............

Jan.

1.60

1.60

1.60

1.60

1.60

1.60

1.60 1 60

1.25 i at

.60

60

.30 

.30

.20

Feb.

(0)

(0)

(0)

fa)

(°)

a

a

a

a

W(°)

1.40 

1.20

.10

Mar.

6.00

10.00

8.20

6.60

5.00

3.50

8.20

7.50

6.80

ft on

7.70

12.00

20.00 

15.00

10.00

Apr.

15.00

10.00

6.60

6.60

10.00

14.00

35.00

35.00

30.00

30 00

49.00

14.00

10.00 

6.60

6.80

May.

20.00

20.00

25.00

25.00

30.00

30.00

15.00

13.00

11.00

10.00

10.00

10.00

9.00 

8.00

7.00

June.

0.10

1 ATI

"S.'TO'

July.

3.60

5.00

10.00

8.50

6.80

5.40

5.10 4 on

3.70

i (\n

14.00

8.00

3.80 

10.00

8.00

Aug.

1.00 i An

15.00

7.20

5.60

4.50

3.00

1.80

3.70

5.10

4.40

3.70

4.60 

5.60

8.70

Sept.

15.00

20.00

30.00

40.00

11.00

8.20

15.00

6.90

5.70

5.00

4.50

6.60

4.30 

4.00

3.80

Oct.

4.40

3.70

3.40

3.00

2.60

1.80

1.50

1.40

1.60

1.80

1.60

4.30

3.00 

3.80

3.90

Nov.

20.00

25.00

30.00

12.00

7.90

6.00

5.60

5.70

8.00

40.00

30.00

14.00

14.00 

7.20

6.60

Dec.

15.00

25.00

10.00

15.00

6.60

5.40

6.60

13.00

6.60

5.10

3.00

1.70

.80 

.80

1.70
364

Daily cfa

WATER RESOURCES OP HAWAII, 1912.

in second-feet, at station No. 86 at 2,700-foot level, near Hilo, Hawaii, 

for 1912 Continued.

Day.

16...............

17.. ...... .......

18...............

19.. ........ .... .

20...............

21...............

22.. .............

23............... 

24............... 

25.......-..-.--.

26..............

27..............

28..............

29.......-.-----. 

30............... 

31... ........ ....

Jan.

0.10

.10

.10

.10

.10

.10

.10

.10 

.10 

.10

.10

.10

.05

.05 

.05 

.05

Feb.

0.10

.10

.10

.10

2.00

20.00

40.00

50.00 

30.00 

5.10

i nn

2.00

3.00

3.00

Mar.

9.00

7 on

15.00

12.00

14.00

11.00 7 on

12.00 

9.00 

5.20

a Oft

E Oft

2.10 

17.00

OK Aft

Apr.

8.00

9 ftfi

11.00

15.00

15.00

15.00

18.00

19.00 

23.00 

"w nn

23.00

20 00

14.00

12.00 

15.00

May.

6.80

Q Kft

12.00

15.00

10.00

K f\(\

1.60

10.00 

3.70 

2.50

1 40

1 flft

.10

.10 

.10 

.10

June.

0.60

1.40

.......

9 on

6.80

2.90

July.

6.50

5.40

4.00

2.60

1.60

2.00

2.00

2.00 

4.00 

3.80

3.70

4.00

2.40

1.50 

1.50

Aug.

3.00

3.00

4.80

6.90

2,00

2.00

2.00

1.80 

2.50 

1.80

1.40

6.80

6.00

5.00 

4.00 

3.00

Sept.

5.60

4.30

3.70

2.90

2.70

2.50

2.60

1.60 

1.50 

1.40

1.40

.90

.80

.70 

5.00

Oct.

4.00

15.00

6.90

10.00

10.00

12.00

15.00

30.00 

16.00 

7.00

5.40

50.00

40.00

30.00 

17.00 

15.00

Nov.

20.00

30.00

13.00

14.00

8.70

8.40

8.40

8.20 

7.40 

6.60

5.40

5.10

8.70

10.00 

6.60

Dec.

6.90

3.00

3.80

7.00

15.00

12.00

20.00

35.00 

20.00 

5.70

8.00

7.50

7.00

5.70 

3.00 

3.00

Monthly discharge at station No. 86 at 2,700-foot level, near Hilo, Hawaii, for 1911-12.

Month.

1911. 

November 14-30. .............

1912.

February. ....................

May..........................

Mean 

discharge 

in secondfeet.

10.70 

13.10

.63 

5.51 

9.55 

17.30 

10.40

Run-off 

(total in 

acre-feet).

359

808

38.7 

317.0 

587.0 

1,030.0 

640.0

Month.

1912 Continued.

July..........................

Mean 

discharge 

in secondfeet.

1.00

4.78 

4.24 

7.25 

10.50 

13.10 

9.00

7.76

Run-oft 

(total in 

acre-feet).

59.5 

294.0 

261.0 

4B1.0 

646.0 

780.0 

553.0

5,640

a Channel dry.

NOTE. Daily discharge determined from rating curve fairly well defined except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Discharge measurements at station No. 86A at 2,700-foot level, near Hilo, Hawaii, in 1912.

Date.

Aug. 23

Hydrographer.

..... do-...-......-.--.--.....................----.--......-.-- ............

Gage 

height.

Feet.

0.31

Discharge.

Sec.-ft.

0

NOTE. Bed of stream of sand and silt; shifting. One channel.

Daily gage height, in feet, at station No. 86A at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Fataeff and Crevotapoff, observers.]

Day.

1. .............

2..............

3..............

4. .............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dec.

0.35

.32

.30

.31

.31

.30

Day.

11..............

13..............

14..............

15..............

16.. ............

17..............

1 S

19..............

20..............

Nov.

0.40

.41

.38

Dec.

0.30

.30

.30

.30

.30

.30

.30

.30

.31

Day.

21..............

22..............

23.. ............

24..............

25..............

26..............

27..............

28..............

29..............

30.............. 

31..............

Nov.

0.36

.34

.38

.34

.32

.32

.38

.38

.35

Dec.

0.35

40

.32

.31
ISLAND OF HAWAII. 365

Discharge measurements at station No. 87 at 2,700-foot level, near Hilo, Hawaii, in 191%. 

[E. O. Christiansen, hydrographer.]

Date.

Aug. 23... ....................

Gage 

height.

Feet. 

1.05

.83

Discharge.

Sec.-ft. 

1.08

.44

Date.

Nov.15... ....................

Gage 

height.

Feet. 

1.18

1.21

Discharge.

Sec.-ft, 

1.74

1.96

NOTE. Bed of stream of gravel and cobbles, with some small bowlders; probably permanent. One 

channel.

Daily gage height, in feet, at station No. 87 at 2,700-foot level, near Hilo, Hawaii, for 1912. 

[Bomm, Bilfljov, Goorko, Belayefl, Selitonott, and Kuznetsofl, observers.]

'Day.

1...............

3...............

4. ..............

5...............

6...............

7...............

8...............

9...............

10............... 

11...............

12...............

13. ..............

14. ..............

15...............

16...............

17...............

18. ..............

19...............

20............... 

21...............

22............... 

23. ..............

24. ..............

ne

26...............

97

28...............

no

30. ..............

31...............

Jan.

1 00

1.00

1 00

1.02

QA

.90

.88

.88

.82

.81

.80

.80 

.80

.79

.78

.78 

.76

.76 

.78

.74

.75

.74

Feb.

0.55

.54

.54

.52

.52

.52

.51

1.10

.98

.82

.76

.71

.......

"i."2i"

.99

Mar.

1.60

1.46

1.12

1.10

1.28

1.25

1.25 

1.29

1.55

1.61

1.68

1.50

1.76

1.35

1.60 

1.32

1.30 

1.35

1 ia

1.41 

1 an

1.37

1.36

1.87

Apr.

1.60

1.55

1.55

1.58

1.60 

1.45

1.21

1.18

1.24

1.25

1.19

1.20

1.20 

1 10

1.33 

1.39

1.58

1.55 

1.49

1.38

May.

1.68

1.10

1.09

i nn

1.09

1.00

1.11

1.00

.98

June.

0.90

.88

.90

.......

1.10

1.05

1.20

.......

.......

1.31 

1.41

1.31

July.

1.15

1.13

1.28

1.22

1.20

1.12

1.71

1.43

1 60

1.42

1.30

1.29

.......

"i."24"

1.22 

1.25

1.11

1.09

1.05

1.02

Aug.

0.98

1.54

1.41

1.15

1.10

1.15

1.16

1.15

1 30

1.41

1.10

1.36

~".~95~

.96 

.94

.93

1 34

Sept.

1.52

1.44

1.74

1.55

1.38

1.32

1.41

1.35

1.32

1.21

1.26

1.18

1.15

1.12

.96

.99 

.95

.92

.89

.86

.85

.84

Oct.

1.15

1.12

1.05

1.02

.98

.96

1.01 

.98

1.20

1.14

1.21

1.24

i.si

1.61

1.72

i.70 

1.35

1.21

1.78

Nov.

1.36

1.11

1.20

.......

1.59

1 60

1.40

1.19

1.71

1.69

1.61

1.45 

1.44

1.21 

1.42

1.15

1.11

1.44

1.48

1.21

Dee.

1.18

1.12

1.18

1.32

1.30

1.15 

1.10

1.08

.99

1.11

1.24

1.38

1.22

1.12

1.34

1.41

"i.'so

1.22

1.20

Daily discharge, in second-feet, at station No. 87 at 2,700-foot level, near Hilo, Hawaii,

for 1911.

Day.

1. ....... ......

2..............

3..............

4..............

5..............

6..............

7..............

8..............

9..............

10..............

Nov. Dee.

0.81

.75

.75

.75

.87

.87

84

.90

1.10

.90

Day.

11..............

12..............

13..............

14..............

15..............

16..............

17..............

18..............

19..............

20..............

Nov.

3.05

4 98

4.30

4.74

16.60

5.96

Dec.

0.84

4.10

7.00

14.70

4.50

5 QA

4.74

6.48

10.80

Day.

21..............

99

23..............

24..............

25..............

26..............

27..............

28..............

29..............

30..............

31..............

Nov.

5.96

5.83

5.70

5.58

5.58

2.78

1 49

1.42

.90

.87

Dec.

1.10

.84

.75

5.46

5.10

4.50

4.50

4.50

5.10

4.74

4.50
366 WATER RESOURCES OF HAWAII, 1912.

Daily discharge, in second-feet, at station No. 87 at %,700-foot level, near Hilo, Hawaii,

for 191%.

Day.

1........ .......

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.90

.90

.90

.90

.90

.90

.90

1.00

.80

.80

.60

.60

.55

.55

.45

.40

.40

.40

.40

.40

.40

.40

.35

.35

.30

.30

.35

.30

.30

.30

.30

Feb.

0.20

.10

.10

.05

.05

.05

.05

.05

.05

.05

.05

.05

1.30

.85

.45

.30

.20

.10

.10

1.00

5.00

7.00-

8.00

6.00

2.00

1.85

1.80

1.70

1.60

Mar.

3.00

5.70

4.50

4.10

1 in

1.30

2.45

2.35

2.25

2.25

9 m

5.10

5.85

6.70

4.00

4.00

4

cn

7.85

3.05

5.70

2.80

2.60

3.05

9 4n

1.80

3.60

3.50

3.25

9.50

10.00

Apr.

8.00

6.00

A. 5fl

4.50

4.50

5.50

8.00

7 00

6.00

A ftf

4.00

1.95

1.80

2.20

2.25

2.10

9 ftfl

1.85

1.90 1 on

1.85

2.85

3 An

5.50

5.00

A. W1

4 40

3.30

3 nn

3 nn

May.

3.00

2.00

4.00

5.00

6.75

5.00

4.00

3.00

2.00

1.30

1.30

1.25

1.10

1.00

1.00

.90

1.10

1.25

1.10

1.00

.90

.90

1.20

1.35

1.10

.90

.90

.85

.80

.80

.70

June.

0.60

.60

60

60

60

.55

.60

.60

.70

.80

.90

1.00

1.20

1.30

1.20

1.10

1.30

1.50

1.70

1.90

2.00

2.20

2.30

2.40

2.50

2.70

3.60

2.70 9 4n

9 ftfl

July.

1.60

1.50

5.00

4.00

2.45

2.05

1.90

1.60

1.40

1.20

7.15

5.40

3.80

5.70

5.00

4.30

3.70

3.10

2.60

2.55

2.40

2.40

2.30

2.30

2.20

2.05

2.25

1.35

1.25

1.10

1.00

Aug.

0.80

.85

8.00

5.00

3.60

2.60

1.60

1.30

1.60

1.65

1.60

1.60

2.10

2.60

3.60

2.40

1.30

2.20

3.15

2.50

2.00

1.50

.75

.80

.70

.70

2.95

2.00

1.80

1.50

2.00

Sept.

3.50

4.00

6.00

7 00

4.75

3.90

7.55

5.10

3.30

3.00

2.80

3.60

3.05

2.80

1.95

2.30

1.75

1.60

1.40

1.10

.80

.85

.75

.65

.60

.60

.50

.50

.50

.80

Oct.

1.20

1.60

1.50

1.40

1.10

1.00

.85

.80

.90

.95

.85

1.90

1.55

1.95

2.10

2.20

3.40

4.60

5.85

6.00

6.00

7.30

10.00

7.00

3.05

1.95

10 00

10.00

10.00

8.10

6.00

Nov.

6.00

7.00

8.00

6.00

3.15

2.20

1.35

1.90

3.00

9.00

8.00

5.60

5.70

3.50

1.85

7.15

8.00

6.85

7.00

4.00

3.90

1.95

3.70

2.80

1.90

1.60

1.40

3.90

4.30

1.95

Dec.

4.00

7.00

5.00

3.00

1.80

1.40

1.80

2.80

2.60

1.60

1.30

1.20

.85

1.35

2.20

3.30

2.05

1.40

2.95

4.00

3.60

4.00

7 QO

6.00

4.50

5.00

3.00

2.05

1.90

1.00

1.00

NOTE. Daily discharge determined from rating curve fairly well denned except for flood stages. Discharge for days for which gage heights are missing estimated from diagram prepared from record of daily 

rainfall at the camp near station No. 50.

Monthly discharge at station No. 87 at 2,700-foot level, near Hilo, Hawaii, for 1911-1$.

Month.

1911.

1912.

April.........................

May........... ...... .

Mean 

discharge 

in secondfeet.

i 79

3 c.f\

.56

1.38

4.01 3 91

1.85

Run-off 

(total in 

acre-feet).

I'M

220

34.40

79.40

247

00 O

114

Month.

1912 Continued.

July..........................

September. ...................

Mean 

discharge 

in secondfeet.

1.47

2.79

2.15

2.57

3.91

4.42

2.97

2.66

Run-off 

(total in 

acre-feet).

87.5

172

139

153

240

263

180

1,940.0
ISLAND OF HAWAH. 367

Monthly discharge at stations Nos. 1-18 and 25-87 at 2,700-foot level, near Hilo,

Hawaii, for 1912.

[Drainage area, about 75 square miles.]

, Month.

January

March......................................................

May........................................................

June.......................................................

July........................................................

August. ....................................................

December. .................................................

Discharge in 

second-feet.

Mean.

30.25 

248.95 

258.81 

435.17 

182.20 

61.72 

146.54 

97.19 

254.05 

401.44 

474.07 

385.17

247.15

Per 

square 

mile.

0.403 

3.320 

3.450 

5.800 

2.430 

.823 

1.950 

1.300 

3.390 

5.350 

6.320 

5.140

3.300

Run-off.

Depth in 

inches 

on drainage area.

0.46 

3.58 

3.98 

6.47 

2.80 

.92 

2.25 

1.50 

3.78 

6.17 

7.05 

5.93

44.89

Total in 

acre-feet.

1,790 

14,300 

15,900 

25,900 

11,200 

3,640 

9,020 

6,970 

15,100 

24,100 

28,300 

23,700

179,000

NOTE. The above table gives the combined discharge in second-feet and run-off in acre-feet for 

the 81 stations at the 2,700-foot level above Hilo, Hawaii.

HAMAKUA GROUP OF STREAMS. 

KAWAINUI RIVER, NEAR WAIPIO, HAWAII.

Location. One hundred feet above intake of New Hamakua ditch and 6£ miles

southwest of Kukuihaele.

Records available. July 20,1911, to December 31, 1912.

Gage. Vertical staff; read twice daily, at 6 a. m. and 5 p. m.; datum unchanged. 

Channel. Practically permanent. 

Discharge measurements. Made by wading at low water and from footbridge 10

feet below gage during high water. 

Accuracy. No discharge rating has yet been obtained. 

Cooperation. Station maintained in cooperation with Hawaiian Irrigation Co.

Daily gage height, in feet, of Kawainui River near Waipio, Hawaii, for 1912.

Day.

2...............

3...............

4...............

5...............

6...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

Jan.

1.30

1.25

1.20

1.20

1.20

1.20

1.68

2.30

1.70

1.35

1.20

1.20

1.29

1.10

1.00

1.00

1.00

1.00

1.00

1.00

Feb.

0.80

.80

1.40

1.95

1.00

.85

.80

.80

.80

.80

.82

.80

1.45

.90

.80

.80

.80

.80

2.05

2.95

Mar.

2.30

2.60

2.40

2.20

2.15

2.05

2.20

1.95

2.00

2.25

2.55

2.45

2.15

1.90

1 85

1.70

2.15

2.30

2.15

2.20

Apr.

2.60

2.30

3.30

2.90

2.40

2.35

2.80

2.90

2.50

2.50

2.10

2.20

2.15

2.10

2.25

2.05

2.15

1.95

1.90

2.22

May.

2.10

2.20

2.20

2.35

2.20

2.20

1.90

1.85

1.80

1.80

1.70

1.70

1.70

1.70

1.60

1.80

1.90

1.90

1.85

1.80

June.

1 45

1.40

1.30

1.15

1.00

1.00

1.25

1.55

2.25

2.35

2.15

2.20

2.10

2.05

1.95

2.35

2.20

1.95

2.15

2.10

July.

2.00

1.90

1.85

2.05

2.00

2.05

2.45

2.05

2.00

1.95

2.00

1.95

2.20

2.15

1.95

1.95

2.00

2.00

1.90

1.90

Aug.

1 60

1.65

1.65

1.40

1.25

1.20

2.05

1.75

2.15

2.25

1.95

2.50

2.15

2.30

2.45

2.15

1.80

2.20

1.95

1.60

Sept.

0.90

2.10

2.55

2.70

2.05

2.05

2.00

2.05

1.80

1.30

1.05

.90

.92

.90

1.90

.95

.85

.80

.80

.80

Oct.

2.30

2.20

1.95

1.15

.95

.80

.80

.80

.80

.80

.80

.80

.80

.80

.80

.80

.80

.80

.80

.80

Nov.

2.00

1.40

1.05

.95

.80

.80

.80

.80

2.40

3.60

2.10

2.40

2.40

1.95

1.80

3.20

3.15

2.90

2.55

2.00

Dec.

3.65

2.05

1.90

1.70

1.50

1.40

1.35

1.95

2.00

2.05

1.60

1.30

1.20

1.00

1.00

1.00

.90

.95

1.20

1.45
368 WATEB BESOURCES OP HAWAII, 1912.

Daily gage height, in feet, of Kawainui River near Waipio, Hawaii, for 1912 Continued.

Day.

21...............

22...............

23...............

24...............

25.. .............

26...............

27.. .............

28...............

29...............

30...............

31...............

Jan.

1.00

.95

.95

.95

.95

.90

.90

.90

.80

.80

.80

Feb.

4.05

2.30

1.70

1.8Q

1.85

1.70

1.40

2.80

2.35

.......

Mar.

2.15.

1.95

2.25

2.00

2.25

2.35

2.10

1.85

1.80

3.85

3.70

Apr.

2.00

2.05

1.95

2.45

2.15

2.30

2.35

2.00

1.95

1.90

May.

1.80

1.70

1.65

1.90

1.65

2.00

2.15

2.00

2.10

1.85

1.75

June.

2.00

1.90

2.20

2.15

1.95

2.15

2.00

1.85

2.00

2.05

July.

1.90

1.95

2.05

2.25

2.00

1.95

1.90

1.80

1.75

1.70

1.70

Aug.

1.40

1.15

1.00

.90

.90

1.45

1.95

1.20

.95

.90

.90

Sept.

0.80

.80

.80

.80

80

.80

.80

.80

.80

1.70

Oct.

0.80

.95

2.30

2.35

.95

1.70

2.50

2.25

2.05

1.95

2.25

Nov.

1.90

1.95

2.20

1.90

1.70

1.70

1.80

1.70

2.05

2.20

Dec;

1.85

1.70

2.10

2.00 i on

2.05

1 60

1.65

1.80

1 45

1.35

WAIPIO RIVER BELOW KOIAWE STREAM, NEAR WAIPIO, HAWAII.

Location. About 50 feet below junction of Koiawe and Waipio Rivers, and about

5 miles southwest of Kukuihaele.

Records available. July 20, 1911, to December 31, 1912. 

Gage. Vertipal staff; datum unchanged. 

Channel. Probably slightly shifting. 

Discharge measurements. Made by wading at low water and from footbridge at

gage during high water.

Accuracy. No discharge rating has yet been obtained. 

Cooperation. Station maintained in cooperation with the Hawaiian Irrigation Co.

Daily gage height, in feet, of Waipio River below Koiawe Stream, near Waipio, Hawaii,

for 1912.

Day.

1. ..............

2...............

3...............

4...............

6............... 

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30..;.......,....

31...............

Jan.

0.95

.90

.90

.90

.90

.90 

1.40

2.60

1.05

.95

.90

.90

.90

.90

.85

.85

.85

.85

.85

.85

.85

.81

.85

.90

.85

.85

.85

.85

.85

.85

.85

,Feb.

0.85

.85

.90

.90

.85

.85

.85

.85

.85

.85

.85

.85

2.50

1.00

.95

.90

.90

.90

2.10

4.10

5.50

1.70

.95

90

90

.90

2.80

3.60

2.40

.......

Mar.

1.70

3.00

2.60

1.70

1.40

1.50 

1.80

1.10

.90

1.70

2.50

3.50

2.80

1.10

.95

2.40

2.90

1.15

2.50

1.80

1.10

2.40

2.30

2.90

1.05

1.00

.95

4.50

4.00

Apr.

2.25

2.30

4.20

5.10

2.30

2.80 

4.10

4.20

3.40

3.90

2.40

2.50

1 90

2.50

1.30

1.25

2.40

1.90

1.35

1.25

2 7fl

1.40

3.60

2.40

1 ^

1.25

May.

1.10

2.30

1.60

3.20

1.90

2.00 

1.20

2.40

1.50

1.20

1.00

.95

.95

90

.90

.90

1.00

.95

1.25

1.35

2.10

1.00

.95

1 60

1.25

1.40

1.60

1.80

1.35

1.25

1.00

June.

0.95

.95

.90

.90

.90

.88 

.88

1.05

2.20

4 30

3.50

2.50

1.90

1.50

1.30

3.00

2.20

1.40

1.30

1.15

1.20

1.05

.95 i oft

1.05

2.60

1.60

1.00

1 30

July.

0.90

.90

.88

1.60

2.20

2.60 

3.80

1.40

1.80

.90

2.10

1.05

4.50

1.50

1.05

1.60

1.40

1.05

.95

.90

.90

90

.90

9 Sfi

1.10

1.00

.90

.90

.90

.90

.90

Aug.

0.90

.90

.90

.90

.90

,.90 

.90

1.45

2.70

2.00

1.30

1.00

1.05

.95

1.50

.92

.92

3.70

1.20

.95

.92

on

.85

.82

H9

3.80

3.00

.95

.42

.90

.85

Sept.

0.85

1.50

3.00

4.10

.95

.90 

.95

.85

.90

.85

.85

.90

.90

.92

.90

1.20

.92

.90

.85

.90

.90

.85

.85

.85

.82

.85

.82

.82

.82

1.50

Oct.

1.10

1.40

1.20

.95

.90

.90

.85

.82

.82

.82

.82

.82

.85

.82

.82

.82

.82

.82

.85

.82

.82

.82

2.20

2.70

1.20

1.60

2.70

1.30

1.40

1.20

3.50

Nov.

1.10

1.00

.95

.92

.90

.90 

.90

.90

5.50

4.50

1.60

6.00

2.50

1.30

.90

4.30

3.50

4.50

2.00

3.00

1.50

1.00

1.00

1.00

.95

.95

.92

.90

.90

1.10

Dec.

3.60

1.40

1.00

.95

.92

.90 

.90

1.20

1.15

1.05

1.00

.95

.90

.90

.90

.90

.90

.90

on

.90

.90

1.10

1.05

1.10

1.25

1.05

1.00

.95

.92

.92
ISLAND OP HAWAII. 369

WAIPIO RIVER BELOW WAIMA STREAM, NEAR WAIPIO, HAWAII.

Location. About 400 feet below junction of Waima Stream and Waipio River, and

about 4 miles southwest of Kukuihaele. 

Records available. July 20, 1911, to December 31, 1912. 

Gage. Vertical staff; read once daily, at 7 a. m.; datum unchanged. 

Channel. Probably slightly shifting. 

Discharge measurements. Made by wading at low water and from footbridge 100

feet above gage at high water.

Accuracy. No discharge rating has yet been obtained. 

Cooperation. Station maintained in cooperation with the Hawaiian Irrigation Co.

Daily gage height, in feet, of Waipio River below Waima Stream, near Waipio, Hawaii,

for 1912.

Day.

1.. .............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20............... 

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

0.50

.50

.50

.50

.50

.50

.75

1.25

60

.50

.50

.50

.50

.50

.50

.50

.50

.50

.50

.50 

.50'

.50

.50

.50

.50

.50

.50

.50

.50

.50

.50

Feb.

0.50

.50

.50

.50

.50

.50

.50

.50

.45

.45

.45

.45

1.30

.55

.45

.45

.45

.45

1.10

3.25 

4.45

.90

.50

.50

.50

.50

1.55

2.55

1.60

Mar.

0.85

1.60

1.30

.80

.70

.75

1.00

.70

.50

.85

1.30

1.90

1.25

.80

.55

.50

1.25

1.50

.60

1.30

.95

.55

1.10

.75

1.15

1.55

.60

.50

.50

3.70

3.25

Apr.

1.15

1.10

3.30

4.30

1.20

1.55

3.15

3.30

1.85

2.50

1.25

1.00

1.20

.70

1.20

.65

.90

.65

.60

1.25 

.95

.70

.70

1.45

.70

2.30

1.30

.80

.60

.60

May.

0.55

1.20

1.00

1.70

.90

1.00

.60

1.25

1.00

.62

.52

.50

.52

.50

.50

.50

,55

.50

.60

.70 

1.15

.52

.50

.85

.60

.75

.92

.95

.70

.60

.50

June.

0.50

.50

.50

.50

.50

.50

.50

.62

1.10

3.40

2.20

1.30

.80

.75

.60

1.60

1.20

.60

.95

.60 

.65

.50

.50

.90

.50

1.35

.65

.50

.50

.60

July.

0.50

.50

.50

.78

1.25

1.35

2.40

.72

.85

.50

1.25

.85

3.55

.85

.52

.85

.75

.55

.50

.50

.50

.50

.50

1.30

.50

.50

.50

.50

.50

.48

48

Aug.

0.48

.50

.50

.50

.50

.50

.50

.50

1.35

1.05

.52

.80

.62

.55

.80

.50

.50

2.00

.70

.52 

.50

.50

.48

.48

.48

2.00

1.75

.55

.50

.50

Sept.

0.48

.70

1.60

2.90

.60

.50

1.00

.50

.50

.48

.48

.48

.48

.48

.48

.60

.50

.50

.48

.48 

.48

.48

.48

.48

is

.48

.48

.48

.48

.80

Oct.

0.55

.80

.65

.50

.50

.48

.48

 4.8

.48

.48

.48

.48

.48

.50

.50

.50

.50

.48

.60

.50 

.48

.48

1.10

1.45

.50

.85

1.45

.65

.75

.52

1.80

Nov.

0.65

.50

.50

.50

.50

.48

48

.48

4.10

3.00

1.20

4.70

1.40

.60

.50

2.80

2.00

2.90

1.35

.80 

.75

.62

.70

.52

.50

.50

.50

.48

.58

.70

Dec.

1.90

1.20

.55

.50

.50

.50

.50

.70

.55

.70

.50

.50

.48

.48

.48

.48

.48

.48

.48

.48 

.48

.50

1.10

.60

.55

.62

.50

.48

.50

.48

.48

NEW HAMAKUA DITCH AT WAIMA STREAM, NEAR WAIPIO, HAWAII.

Location. In the Waima Branch of Waipio Gulch, and about 8 miles west of Kukuihaele, Hawaii. Gage set in flume crossing Waima Stream. 

Records available. May 1 to December 31,1912. 

Gage. Vertical staff; read twice daily, at 6 a. m. and 5 p. m. 

Channel. Smooth and regular (in ditch flume).

The following discharge measurement was made by C. H. Pierce: 

February 6, 1912: Gage height, 35.5 inches; discharge, 56.2 second-feet. 

14694° WSP 336 14 24
370 WATER RESOURCES OF HAWAII, 1912.

Daily gage height, in feet, of New Hamakua ditch at Waima Stream, near Waipio, Hawaii,

for 1912.

Day.

1....................................

2....................................

3....................................

4....................................

5....................................

6....................................

7....................................

8....................................

9....................................

10. ...................................

11....................................

12....................................

13....................................

14....................................

15....................................

16....................................

17....................................

18....................................

19....................................

20....................................

21.............................!......

22....................................

23....................................

24....................................

25....................................

26....................................

27....................................

28....................................

29....................................

30....................................

31....................................

May.

4.30

4.30

4.30

4.30

4.30

4.30

4.30

4.30

4.30

4.30

4.28

4.25

4.30

4.25

4.19

4.21

4.28

4.26

4.30

4.30

4.30

4.24

4.12

4.24

4.28

4.22

4.30

4.30

4.26

4.30

4.22

June.

4.11

4.02

3.96

3.91

3.86

3.85

3.95

4.30

4.30

4.20

4.20

4.20

4.20

4.20

4.20

4.20

4.20

4.20.

4.20

4.20

4.20

4.16

4.10

4.20

4.21

4.20

4.30

4.21

4.15

4.26

July.

4.19

4.16

4.10

4.16

4.30

4.30

4.41

4.58

4.70

4.39

4.45

4.65

4.55

4.70

4.40

4.45

4.50

4.48

4.15

4.02

3.98

4.28

4.30

4.50

4.16

4.10

4.05

3.94

3.91

3.82

3.79

Aug.

3.78

3.94

4.20

3.90

3.80

3.78

4.16

4.10

4.75

4.85

4.28

4.71

5.00

4.72

5.06

4.32

4.20

4.60

4.65

4.05

3.92

2.82

3.78

3.72

3.70

4.40

4.48

4.58

3.96

3.80

Sept.

3.70

4r28

5.30

5.20

4.81

4.38

4.68

4.30

4.34

4.00

3.88

3.82

3.80

3.95

3.94

4.59

4.15

3.85

3.79

4.06

4.48

3.94

3.78

3.71

3.66

3.65

3.68

3.62

3.60

4.25

Oct.

4.52

4.55

4.30

3.94

3.75

3.65

3.61

3.60

3.59

3.58

3.58

3.59

3.66

4.76

3.89

3.69

3.69

3.75

4.61

3.72

3.62

3.75

5.20

5.30

4.10

4.60

5.30

4.20

4.20

4.20

4.20

Nov.

4.14

3.81

3.71

3.69

3.80

3.75

3.65

3.86

4.15

4.20

4.20

4.20

4.20

4.20

4.10

4.20

4.20

4.20

4.20

4.20

4.20

4.20

4.20

4.16

4.12

4.06

4.14

4.01

4.18

4.10

3.95

Dec.

4.20

3.65

4.09

4.00

3.92

3.85

4.18

4.20

4.15

4.18

3.98

3.86

3 70

3.75

3.72

3.69

3.66

3.72

3.69

4.08

3.78

4.00

4.20

4.20

4.04

4.20

3.98

3.88

4.10

3.99

3,95

NEW HAMAKUA DITCH AT MAIN WEIR, NEAR KTTKTTIHAELE, HAWAII.

Location. Near head of ditch about 500 feet south of office of Hawaiian Irrigation

Co. (Ltd.), at Kukuihaele. This ditch diverts all run-off from the headwaters of

the Wapio Basin below the upper Hamakua ditch. 

Records available. July 18, 1910, to December 31, 1912. 

Gage. Automatic clock register; datum unchanged. 

Discharge. Measured by weir consisting of six 5-foot panels, sharp crested, and

with a good stilling basin above. Discharge measurements made in ditch below

weir have checked weir discharge to within 2 per cent. 

Cooperation. The records for this weir have been furnished the Geological Survey

by the Hawaiian Irrigation Co. (Ltd.).

Daily discharge, in million gallons, of New Hamakua ditch at main weir, near Kukuihaele,

Hawaii, for 1912.

Day.

i. ...........I..

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

Jan.

35.6

34.6

33.9

33.3

32.9

32.4

34.3

37.6

37.6

35.0

Feb.

29.6

29.3

30.0

35.3

32.1

30.9

30.5

30.0

29.9

29.6

Mar.

38.6

38.8

38.7

38.6

38.6

38.8

38.6

38.6

38.8

38.8

Apr.

38.8

38.7

38.9

39.0

38.9

39.1

39.0

39.0

38.9

38.3

May.

38.7

38.7

38.9

39.0

38.7

38.8

36.2

36.6

36.3

36.3

June.

36.2

36.2

35.7

35.0

34.5

34.2

34.8

35.4

35.2

35.2

July.

37.0

36.8

35.7

35.3

37.8

37.8

37.7

42.2

42.9

40.8

Aug.

31.0

32.5

34.9

31.7

30.4

30.0

33.6

39.3

42.0

44.5

Sept.

31.1

39.3

47.3

48.9

45.8

41.8

44.5

41.6

41.1

36.1

Oct.

41.6

40.4

39.2

34.4

31.5

30.1

29.5

29.1

29.0

29.0

Nov.

34.5

33.0

31.3

31.3

32.1

31.7

30.7

32.3

35.1

34.8

Dec.

33.9

35.4

34.2

34.0

34.2

34.2

34.6

34.2

34.6

34.5
ISLAND OF HAWAII. 371

Daily discharge, in million gallons, of New Hamakua ditch at main weir, near Kukuihaele, 

Hawaii, for 1912 Continued.

Day.

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

33.3

32.6

32.2

32.0

31.8

31.4

31.1

31.0

30.8

30.6

30.5 v\ <;

30.3

31.0

30.7

30.2

30.0

9Q Q

29.8

29.6 

29.7

Feb.

90 R

30.1

36.5

35.5

31.6

30.5

30.2

29.8

35.4

38.3

37.9

37.8

38.3

38.6

38.9

38.6

38.8

38.4

38.4

Mar.

38.9

38.7

38.8

38.7

38.7

37.8

37.8

37.9

37.9

37.9

38.2

38.0

38.2

38.4

38.6

38.5

38.7

38.6

37.4

39.1 

39.3

Apr.

OQ Q

38.5

38.5

38.8

38.8

38.7

38.9

41 Q

38.6

38.8

38.7

38.5

38.7

38.9

39.0

38.9

38.9

38.6

38.8

38.8

May.

36.4

36.4

36.2

36.3

36.2

36.5

36.5

36.3

36.2

36.1

36.2

36.1

36.1

36.3

36.1

36.4

36.6

36.6

36.3

36.2 

36.4

June.

35.3

35.5

34.0

34.8

35.1

34.8

35.8

34.8

35.0

35.2

34.8

34.8

34.8

35.4

36.4

36.1

36.9

36.7

36.0

37.5

July.

30 Q

42.2

41.6

41.9

4fl R

38.4

38.4

39.0

36.5

34.8

34.1

36.8

37.8

41.2

37.2

35.4

33.8

33.2

32.0 

31.1

Aug.

38.5

43.0

45.6

43.8

46.6

39.0

36.8

39.4

43.4

35.9

34.0

32.2

31.1

30.2

30.5

36.5

40.9

43.6 ti ?

33.2 

32.5

Sept.

35.1

34.0

33.0

33.8

34.6

32.5

37.2

33.4

32.3

34.8

36.9

34.2

31.7

31.1

29.9

29.9

29.9

90 *i

29.3

34.6

Oct.

28.8

29.5

29.5

36.3

33.0

30.1

29.5

30.1

38.7

31.1

29.5

32.0

49.1

50.7

37.4

39.8

50.6

34.9

35.3

35.1 

34.9

Nov.

34.8

34.8

34.8

3*. 8

34.4

34.2

34.2

33.8

33.8

33.6

34.2

34.0

33.8

34.2

34.2

34.2

33.6

33.8

34.2

34.2

Dec.

33.8

32.5

32.3

32.3

32.3

31.7

30.1

31.7

31.7

34.0

31.7

34.2

34.5

34.9

34.9

34.9

34.2

33.0

34.5

34.2 

34.2

NOTE. The weir record includes the total flow of the ditch exclusive of water sent over the wasteway 

a few hundred feet above when it is not needed.

Monthly discharge of New Hamakua ditch at main weir, near Kukuihaele, Hawaii, for 1912.

Month.

March. . ......................

April.........................

May..........................

July..........................

Mean 

discharge 

in million 

gallons.

32.1

33.8

38.5

38.9

36.8

35.4

37.6

Run-off 

(total in 

million 

gallons).

QQfi

981

1,190

1,170

1,140 i ftfin

1,170

Month.

Mean 

discharge 

in million 

gallons.

36.8

35.8

34.8

33.7

33.6

35.7

Run-off 

(total in 

million 

gallons).

1,140

1,080

1,080

1,010

1,040

13,100

KOHALA GKOUP OF STEEAMS. 

KOHALA DITCH NEAR KOHALA, HAWAII.

Location. The Kohala Ditch Co. maintains three weirs, which measure the discharge carried by Kohala ditch. This ditch picks up and delivers to the plantations on the north coast of Hawaii all the run-off at low and medium stages between 

the Honokane Gulch and the northwest point of the island below the 2,000-foot 

contour. The Kehena ditch collects most of the water above the 2,000-foot contour.

The Awini weir is in the east branch of Honokanenui Gulch at an elevation of 

1,880 feet, and is on the southeast side of the gulch.

The Niulii weir is about 3J miles south of Niulii, Kohala District, at an elevation of 1,000 feet, and is about 5 miles below the Awini weir.

The Hawi weir is about 1J miles south of the Hawi Mill near the lower end of 

the ditch.

Records available. Daily records of the flow of the Kohala ditch at the Awini and 

Niulii weirs have been kept by the Kohala Ditch Co. since July 1, 1907. No 

daily record has been kept of the flow at the Hawi weir, which is used mainly as 

a check on deliveries of water between Niulii and Hawi. The Niulii weir measures the amount of water shown by the Awini weir, and also the inflow from the 

Honokanenui. The record for the Honokanenui is arrived at by subtracting the 

flow at the Awini weir from the flow at the Niulii weir.
372 WATER RESOURCES OF HAWAII, 1912.

Gages. Vertical staffs graduated to imndredths and set in at the weirs. 

Discharge measurements. Each weir consists of three 5-foot panels with end 

contractions, sharp-beveled steel crest, and very slight velocity of approach.

Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii,

for 1907.

Day.

1.....

2..... 

3. .

4. .

5. .

6. .

7. .

8. . 

9. . 

10.....

11.....

12..... 

13..... 

14..... 

15.....

July.

7.90

4.77 

15.70

4.39

4.03

4.03

9.29

2.99 

.89 

.17

"is.'eo"

14.10

4.77

Aug.

10.50

6.59 

4.03

20.70

19.50

12.50

19.50

18.30 

20.70 

20.70

20.70

18.90 

14.60 

20.70 

20.70

Sept.

5.16

4.77 

3.32

.5.16

2.99

4.39

10.50

4.03 

2.99 

7.02

5.76

9.76 

10.50 

3.32 

 7.46

Oct.

16.90

15.70 

12.50

12.00

21.90

21.90

21.90

20.70 

16.90 

20.10

18.90

14.10 

9.76 

11.50 

18.30

Nov.

19.50

16.30 

21.90

21.90

19.50

16.90

12.50

10.50 

21.90 

16.90

11.50

11.50 

10.50 

9.29 

13.00

Dec.

10.50

9.29 

8.36

8.36

7.90

12.50

10.50

9.29 

8.36 

6.59

6.59

5.16 

11.50 

16.90 

12.50

Day.

16.....

17..... 

18.....

19.....

20.....

21.....

22.....

23..... 

24.....

25.....

26.....

27..... 

28..... 

29..... 

30..... 

31.....

July.

0.89

"2." 66"

20.70

11.00

20.70

20.70

18.90 

16.90 

10.50

6.59

8.36 

19.50 

15.70 

11.00

4.77

Aug.

21.90

15.20 

10.50

12.50

12.50

16.30

1160

9.29 

4.39 

7.46

21.90

20.70 

20.70 

18.90 

11.50 

7.46

Sept.

8.82

4.77 

5.76

3.67

12.00

10.50

21.90

21.90 

20.70 

16.90

13.00

20.70 

20.70 

17.40 

13.60

Oct.

11.50

21.90 

2L90

21.90

21.90

21.90

21.90

20.70 

16.90 

11.00

9.76

16.30 

21.90 

17.40 

15.70 

18.90

Nov.

11.50

10.50 

9.29

8.82

12.50

12.00

14.60

20.10 

20.70 

15.20

14.60

16.90 

21.90 

15.20 

12.00

Dec.

......

..:...

12.50 

16.90 

21.90 

21.90 

21.90

Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii,

for 1908.

Day.

1... ............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14.... ...........

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

20.70

20.70

20.70

15.70

13.00

11.50

10.50

8.82

7.90

7.02

6.59

6.17

5.76

5.76

21.90

20.70

15.70

12.50

12.50

15.70

12.50

9.76

7.46

6.59

6.17

5.76

7 4fi

7.02

12.50

20.70

21.90

Feb.

16.90

20.70

18.30

20.70

20.70

20.70

20.70

20.70

15.70

12.50

9.29

8.82

8.36

11.50

10.50

11.50

10.50

9.29

8.82

8.82

7.46

6.59

5.16

4.77

4.03

4.03

3.67

3.67

Mar.

9 OQ

4.77

4.03

4.03

3.67

7.46

16.90

12.50

7.46

5.76

4.77

4.03

3.32

3.32

3.32

7.46

11.00

6.59

6.59

5.76

4.77

4.77

3.67

3.67

3.32

3.32

2.66

2.66

2.05

2.05

2.05

Apr.

5.76

19 Kft

18.30

18.30

14.60

n «;ft

7 46

10.50

15.20

15.70

16.90

18.30

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

18.30

16.90

14.60

11.50

10.50

7.46

6.59

6.59

5.76

May.

5.76

8.36

9.29

19.50

18.30

20.70

20.70

20.70

20.70

20.70

20.70

18.30

14.60

13.60

12.50

11.50

15.70

15.70

16.90

15.70

14.60

13.60

16.90

15.70

18.30

18.30

18.30

16.90

16.90

15.70

14.60

June.

12.50

10.50

9.29

11.50

13.60

15.70

14.60

13.60

16.90

15.70

15.70

18.30

18.30

20.70

On 7n

20.70

19.50

18.30

20.70

20.70

20.70

20.70

20.70

20.70

20.70

19.50

18.30

16.90

14.60

15.70

July.

18.30

20.70

20.70

20.70

20.70

19.50

19.50

15.70

16.90

20.70

19.50

18.30

16.90

20.70

19.50

18.30

16.90

18.30

20.70

19.50

18.30

18.30

15.70

15.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

Aug.

20.70

20.70

19.50

18.30

18.30

20.70

20.70

20.70

19.50

18.30

18.30

16.90

18.30

20.70

20.70

20.70

19.50

18.30

16.90

15.70

13.60

12.50

13.60

18.30

20.70

20.70

20.70

19.50

18.30

20.70

20.70

Sept.

20.70

20.70

19.50

18.30

16.90

15.70

14.10

13.60

13.00

15.70

20.70

20.70

19.50

18.30

18.30

19.50

18.30

20.70

20.70

20.70

20.70

19.50

18.30

16.90

15.70

15.70

14.60

16.10

15.70

14.60

Oct.

13.60

12.50

11.50

9.29

8.36

13.60

15.70

14.60

13.60

12.50

11.00

9.29

7.46

7.46

20.70

20.70

19.50

20.70

18.30

15.70

20.70

19.50

18.30

16.90

15.70

14.60

13.60

12.00

11.50

10.50

7.46

Nov.

6.59

6.17

5.76

4.77

5.16

20.70

19.50

19.50

15.70

13.60

10.50

9.76

8.82

7.46

5.16

5.16

4.77

5.76

9.29

19.50

13.60

11.00

8.82

8.36

15.20

16.90

20.70

20.70

20.70

20.70

Dec.

9n 7fi

20.70

20.70

19.50

18.30

20.70

20.70

20.70

20.70

20.70

19.50

18.30

15.70

14.60

14.10

13.60

20.70

20.70

20.70

20.70

20.70

19.50

18.30

16.90

20.70

20.70

19.50

18.30

16.90

15.70

14.60
ISLAND OF HAWAII. 373

Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii,

for 1909.

Day.

1...............

o

3...............

4...............

5...............

6...............

7...............

g

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

is

19............... a)...............

21...............

22...............

23...............

25...............

26...............

27...............

28...............

29............... 

30............... 

31...............

Jan.

14.10

14.10

13.60

13.60

13.60

12.50

11.50

9.29

8.36

7.46

6.59

5.76

4.77

4.03

3.67

3.32

2.99

2.99

2.99

2.99

2.99

20.70

20.70

20.70

20.70

20.70

20.70

19.50 

19.50 

20.70

Feb.

20.70

19.50

18.30

16.90

15.70

20.70

19.50

18.30

15.70

14.60

13.60

20.70

19.50

18.30

16.90

15.70

20.70

20.70

19.50

18.30

18.30

20.70

20.70

20.70

20.70

20.70

20.70

20.70

Mar.

20.7

20.7

20.7

20.7

20.7

20.7

20.7

19.5

18.3

18.3

20.7

20.7

19.5

18.3

18.3

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

19.5 

18.3 

16.9

Apr.

16.30

15.70

20.70

20.70

20.70

20.70

20.70

18.90

18.30

16.90

16.30

16.30

15.70

15.20

14.60

14.10

13.60

13.10

12.00

11.00

9.76

8.82

8.36

7.90

7.46

6.59

6.17

5.76 

5.76

May.

4.77

4.39

4.03

16.90

20.70

20.70

19.50

10 OA

16.90

16.90

15.70

14.60

14.10

20.70

19.50

18.30

16.90

15.70

14.60

14.60

14.10

13.60

12.50

10.50

8.36

20.70

20.70

20.70

20.70 

19.50 

18.30

June.

13.60

11.50

9.29

8.36

7.46

6.59

15.70

14.60

13.60

11.50

9.29 8-36

7.46

20.70

18.30

16.90

15.70

14.60

12.50

10.50

8.36

6.59

5.76

14.10

12.50

10.50

9.76

8.82

7.02 

8.36

July.

16.30

13.60

12. CO

8.82

5.76

4.77

9.29

20.70

19.50

16.96

15.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

18.30

20.70

20.70

20.70

20.70

20.70 

20.70 

20.70

Aug.

19.50 is so

15.70

14.60

13.60

12.50

11.50

12.50

11.50

10.40

9.76

9.29

8.82

8.36

8.36

7.90 7 on

7.46

7.02

6.59

5.76

5.16

4.39

5.76

7.02

-6.59

5.16

8.36

12.50 

11.00 

7.46

Sept.

5.16

5.16

4.03

3.66

2.99

2.99

2.35

2.35

2.35

2.05

2.05

4.39

8.82

19.50

13.60

8.82

6.17

14.60

20.70

14.10

10.50

6.17

8.82

15.70

15.70

14.60

21.90

14.60

13.60 

12.00

Oct.

8.82

10.90

13.60

11.50

11.00

10.50

9.29

7.46

6.59

4.03

3.32

6.59

10.50

9.29

6.17

5.16

4.77

3.32

3.32

3.32

2.66

7.46

14.60

14.10

11.00

7.46

4.77

4.03

4.03 

3.67 

5.76

Nov.

7.02

4.77

8.36

8.36

8.36

7 4fi

5.16

7.46

9.76

9.76

9.29

12 00

12.00

9.76

8.36

7 fi9

5.16

5.16

4.77

4.03

3.32

3.32

2.66

2.66

9.26

7.46

4.77

3.32 

2.66

Dec.

3.32

2.99

2.66

2.66

2.05

2.05

1.77

1.50

1.50

1.50

1.50

1.50

1.50

1.50

1.24

1.24

3.32

20.70

20.70

20.70

20.70

20.70

20.70

15.20

11.50

20.70

15.20

12.50

12.00 

9.76 

8.36

Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii,

for 1910.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18......-..--..--

1Q

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28

29............... 

30............... 

31...............

Jan.

6.59

6.17

6.17

6.17

7.90

15.70

11.50

9.29

8.82

11.50

12.50

13.60

19.50

19.50

18.30

17.40

18.30

20.70

19.50

18.30

18.30

18.30

18.30

18.30

18.30

18.30

18.30

18.30

18.30 

18.30 

18.30

Feb.

18.30

19.50

18.30

16.90

15.20

14.60

13.60

13.60

12.50

12.00

11.50

12.50

15.70

13.60

12.50

11.50

11.50

11.00

10.50

9.29

10.50

15.70

15.70

13.00

11.50

9.76

8.36

7.90

Mar.

8.36

15.20

16.90

16.30

16.30

13.60

12.50

12.50

11.50

9.29

7.46

6.59

6.17

5.76

4.77

4.03

3.32

3.32

16.90

18.30

18.30

16.90

15.70

16.90

18.30

16.90

14.60

14.60 

16.90 

20.70

Apr.

19.50

17.40

16.90

13.60

12.50

16.30

14.60

16.90

16.30

14.60

13.60

12.50

10.50

9.29

14.60

20.70

20.70

20.70

19.50

16.30

13.60

10.50

12.50

10.50

8.36

7.02

7.46

8.36 

8.36

May.

20.70

19.50

18.90

18.30

19.50

18.90

20.70

20.70

19.50

19.50

18.90

18.30

16.90

15.70

19.50 is oft

16.90

10 on

16.90

14.60

n

CA

8.36

6.59

5.52

4.77

4.39

4.03

"4.03 

4.03 

9.76

June.

18.30

17.40

16.30

14.60

1C Qrt

18.30

17.40

19.50

19.50

18.30

16.30

15.70

20.70

19.50

20.70

20.70

20.70

20.70

20.70

is so

16.90

18.30

19.50

18.30

16.30

15.20

14.60

14.60

14.60 

14.10

July.

14.10

14.60

14.60

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

19.50

19.50

20.70

20.70

W KA

16. SO

15.20

14.60

14.10

12.50

12.50

20.70

20.70

19.50

16.90

15.70 

15.70 

15.20

Aug.

15.70

15.70

20.70

19.50

19.50

17.40

20.70

20.70

19.50

19.50

18.90

18 90

20.70

19.50

16.30

8.36

7 80

20.70

20.70

20.70

20.70

19.50

17.40

16.30

15.20

IQ Art

12.50 

11.50 

10.50

Sept.

8.36

7.46

6.17

5.76

4.39

3.67

2.99

2.66

2.35

2.05

2.05

2.05

2.05

2.05

2.05

5.76

5.76

5.16

4.39

3.32

2.66

2.66

2.05

2.05

2.05

2.05

2.05

2.05

1.50 

4.03

Oct.

19.50

19.50

11.50

10.50

11.00

11.00

20.70

20.70

19.50

18.30

11.50

11.00

7.90

6.59

6.59

6.59

6.17

4.39

4.39

4.03

10.50

11.00

8.36

7.46

5.16

4.39

4.77

20.10 

10.50 

7.46

Nov.

5.16

4.77

4.77

4.02

3.67

4.03

2.66

2.66

2.66

2.05

2.99

9 QQ

2.05

2.05 9 m\

1.77

5.16

20.70

20.70

15.20

15.20

15.20

21.90

20.70

15.70

11.00

9.76

9.29

20.70 

20.70

Dec.

21.90

21.90

20.70

20.70

20.70

20.70

20.70

20.10

18.30

IR on

12.50

12.50

12.00

10.50

10.50

9.76

8.82

8.82 7 on

6.59

6.17

6.17

6.17

6.17

8.82

7 4.R

7.46

7.46

7.46 

6.17 

6.17
374 WATER RESOUECES OF HAW AH, 1912.

Daily discharge, in million gallons, of Kohala ditch at Awini weir, near Kohala, Hawaii,

for 1911.

Day.

1...............

2...............

3................

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

15.70

Ofi 7fi

18.90

20.70

20.70

19.50

16.90

13.00

13.00

13.00

1O An

13.00

10 CA

12.50

12.50

ID Aft

14.60

14.60

12.50

10.50

10.50

9 76

9 76

12.50

14.60

10 V\

19.50

20.70

19.50 

19.50

19.50

Feb.

21.90

91 Aft

21.90

21.90

91 Oft

21.90

21.90

21.90

21.90

21.90

91 on

20.70

10 V\

18.90

IQ on

IQ on

Ifi Qfi

16.30

16.30

15.70

14.60

13.00

12.50

11.00

9 76

12.50

20.70

.......

Mar.

15.70

19 t\ft

19 %f\

12.00

12 00

n v»

10.50

9 76

n tfl

11.50

10.50

10.50

9

OQ

8.36

8 ^A

7 QA

20.70

16 90

16.90

15.20

13.60

1 o An

19 ftfi

m KA

9 76

8.36 

7.02

20.70

Apr.

18.30

17.40

 10 QA

Ifi QA

14 60

14.60

14.10

14.10

10 an

19 Xf\

12 50

19 f\n

11 50

10.50

9 29

9 9Q

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

IQ V)

18.30 

16.90

May.

19.50

18.30

16.90

16.90

16.90

19.50

20.70

20.70

20.70

1ft °*ft

ifi on

IB °.A

20.70

20.70

20.70

20.70

19.50

19 50

W Vl

IQ OA

15.70

19 f\ft

10.50

9 9Q

8 36

B sfi

7.46

7 Af,

7.46

June.

7.5

16 9

IQ O

18.3

IQ o

19.5

20.7

20.7

20.7

20.7

20.7

20.7

on 7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

on 7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7 

20.7

July.

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

on 7fi

20.70

20.70

20.70

19.50

19.50

16.90

16 90

15.70

14.60

11.50

11.50

in f^ft

8.36

7.46

6.59

5.76 

5.76

5.76

Aug.

4.77

4.77

4.03

3.67

3 R1

3.21

3.21

3.21

5.76

4.77

4 77

4.77

9 7ft

9.76

9.76

9 7A

10.50

10.50

10.50

12.50

12.50

10 f*fi

13.00

13.50

13.50

1°. fj\

13.50 lo KA

14.10 

14.10

14. 10

Sept.

18.3

18.3

18.3

20.7

18.3

20.7

20.7

19.5

19.5

20.7

20.7

19.5

18.3

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7

20.7 

20.7

Oct.

18.30

18.30

18.30

20.70

19.50

18.90

18.30

16.90

16.90

15.70

15.70

15.70

14.60

13.60

13.60

13.60

12.50

11.50

9.76

9.76

9.29

9.29 7 on

7.90

7 4fi

R TO

6.17

5.76

5.76 

6.59

6.59

Nov.

5.16

4.77

4.77

7 4fi

8.82

9.29

10.50

12.50

10.50

9.29

10.50

10.50

9 90

10.50

12.50

10.50

20.70

20.70

20.70

20.70

20.70

IQ 5/1

18.30

18.30

18.30

16.90

15.20

15.20

15.70 

15.70

Dec.

10.50

9 9O

8. 36

7.46

7 46

7 AK

7.90

8.36

8.36

7.46

7 dR

5.76

1O Aft

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

19.50

12.50

11.00

9.29

8.82

8.82

8.82 

8.82

9.76

Daily discharge, in million gallons, of Kohala, ditch at Awini weir, near Kohala, Hawaii,

for 1912.

Day.

1.... ...........

2...............

2...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

7.46

6.59

5.76

4.77

A. "to

4 03

12.00

11.50

10.50

8.36

6 v>

6.17

4.77

A. 77

4.03

3.32

2.66

2.66

2.05

2.05

2.05

3.32

2.66

2.05

1.77

1.77

1.77 

1.50

Feb.

1.50

2.66

5.16

3.32

9 C\K

1.77

I

Cft

1 AH

2.99

3 Q9

9.29

10.50

7 46

5.16

3.07

3

00

4.03

10.50

20.70

20.70

18.30

17.40

17 40

17.40

20.70

20.70

Mar.

20.70

20.70

20.70

20.70

19 50

19.50

IQ *tf\

IQ QA

IQ on

1C Qfi

IQ OA

20.70

20.70

20.70

19.50

10 KJ\

is °,ft

20.70

20.70

20.70

20.70

20.70

19.50

19.50

19.50

20.70

20.70

20.70

IQ t^ft

20.70 

20.70

Apr.

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

19.50

10 £ft

IQ V»

19.50

IQ t\ft

19.50

19.50

18.30

1 Q Qft

IQ OA

18 30

IQ OA

18.30

1ft °.fi

18.30

IQ OA

18.30

May.

15.70

OA 7ft

20.70

20.70

19.50

19.50

16.90

16.90

16.90

ifi on

14.60

IQ CA

13.60

12.50

10.50

9 76

10.50

10.50

10.50

9.76

12.50

10.50

8 89

S

CO

9 29

10.50

15.70

15.70

12.50

10.50 

10.50

June.

9.29

9 29

7.90

7.02

6.17

5.16

5.16

7

QA

12.50

20.70

20.70

20.70

18.30

ifi on

16.90

20.70

20.70

16.90

19.50

16.90

15.20

14.10

14.10

15.70

14.10

14.10

12.50

11.50

12.50

14.10

July.

12.50

13.00

14.10

13.00

10 nn

18.90

20.70

20.70

18.30

16.30

14.10

11.50

11.50

13.60

11.50

9.76

8.82

8.82

7.90

7.90

7.90

7.90

8.82

11.00

9.29

8.36

8.36

7.90

7.90

7.02 

6.17

Aug.

2.99

2.99

3.32

3.32

2.99

2.99

2.99

2 QQ

16.90

16.90

15.70

15.70

16.90

16.90

15.70

13.00

10.50

9.29

11.50

7.90

7.02

5.16

5.16

3.32

3.32

2.66

4.39

9.29

7.02

6.59 

5.16

Sept.

5.16

15.70

20.70

20.70

16.90

15.70

15.70

15.70

15.70

12.50

11.50

12.50

10.50

8.36

9.29

12.00

9.29

9.29

9.29

10.50

10.50

10.50

8.36

5.76

5.76

5.76

3.32

2.66

2.66

7.02

Oct.

11.00

9.76

9.29

9.76

7.90

5.76

4.03

2.99

2.99

2.99

2.99

2.99

2.66

7.90

7.90

6.59

5.16

4.77

7.46

7.46

7.46

5.76

16.90

16.90

19.50

20.70

20.70

20.70

16.90

12.50 

12.00

Nov.

12.00

12.00

9.76

8.36

9.29

8.36

8.36

7.46

10.50

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

20.70

19.50

18.30

13.00

12.50

11.50

11.00

11.00

11.50

11.50

Dec.

20.70

18.30

15.20

11.00

10.50

8.82

12.50

16.90

15.70

12.50

10.50

8.36

8.82

8.82

8.82

8.36

7.90

8.82

8.36

11.00

9.29

9.29

9.29

20.70

20.70

20.70

18.90

12.50

15.70

12.00 

12.50

NOTE. This weir measures discharge in flowing streams when eombined flow is less than 20 million 

gallons (except for seepage gains or losses).
ISLAND OF HAWAII. 375 

of Kohala ditch at Awini weir, near Kohala, Hawaii, for 1907-1912.

Month.

1907. 

July......................................................

September ...............................................

October ..................................................

November ...............................................

The period. ........................................

1908.

February. . ..............................................

May......................................................

July......................................................

September ...............................................

October.......................................... . ....

November............. ........ .. .

December. ... ..................................

The year............. ..................... ........

1909. 

January........................................ .. ....

February......................... . March. . ....................................... ....

April.............................................. ......

May........... ......... ..... .

June.............................. .. ... ....

July......................................................

August... . ....................................... ......

September........................ ......... .

October........................................ ....

November.... .............

December................................................

The year... ........................................

1910. 

January........................................

February......................................... ......

March....... ................... . . .

April.............................. ... .......

May....................................................

June........ ........... ... .......

July............................... . . . ....;

August........................................ .....

September........................ ... ....

October. ...................................... November............ ...... ...

December. ........................

The year................................ . ... .

1911. 

January...........................

February......................... . ... ...

March ..

Aprfl.............................. . May......................................................

June......................................... . ..

July................................................ ...

August... . ...............................................

September......................... .. ......

October........................ .

November .......................

December. ..............

Theyear...... ..............

Discharge in million gallons.

Maximum.

20.70 

21.90 

21.90 

21.90 

21.90 

21.90

21.90 

20.70 

16.90 

20.70 

20.70 

20.70 

20.70 

20.70 

20.70 

20.70 

20.70 

20.70

21.90

20.70 

20.70 

"20.70 

20.70 

20.70 

20.70 

20.70 

19.50 

21.90 

14.60 

12.00 

20.70

21.90

20.70 

19.50 

20.70 

20.70 

20.70 

20.70 

20.70 

20.70 

8.36 

20.70 

21.90 

21.90

21.90

20.70 

21.90 

20.70 

20.70 

20.70 

20.70 

20.70 

14.10 

20.70 

20.70 

20.70 

20.70

21.90

Minimum.

0.17 

4.03 

2.99 

9.76 

8.82 

5.16

5.76 

3.67 

2.05 

5.76 

5.76 

9.29 

15.70 

12.50 

13.00 

7.46 

4.77 

13.60

2.05

2.99 

13.60 

16.90 

5.76 

403 

5.76 

4.77 

4.39 

2.05 

2.66 

2.66 

1.24

1.24

6.17 

7.90 

3.32 

7.02 

4.03 

14.10 

12.50 

7.90 

1.50 

4.03 

1.77 

6.17

1.50

9.76 

9.76 

7.02 

9.29 

7.46 

7.50 

5.76 

3.21 

18.30 

5.76 

4.77 

5.76

3.21

Mean.

9.84 

15.30 

9.98 

17.60 

15.00 

13.00

13.40

12.20 

11.80 

5.18 

14.90 

16.10 

17.20 

19.20 

18.80 

17.80 

14.10 

12.00 

18.80

15.00

11.50 

18.80 

20.10 

13.90 

15.70 

11.30 

17.90 

9.70 

9.31 

7.39 

6.73 

8.49

12.50

15.10 

13.10 

12.30 

10.40 

14.50 

 17.80 

17.90 

17.20 

3.43 

10.60 

9.08 

12.20

13.10

15.30 

18.40 

12.30 

16.70 

16.30 

19.80 

16.40 

9.08 

20.10 

12.60 

13.40 

12.70

15.20

Run-off 

(total in 

million 

gallons).

276 

474 

299 

545 

449 

239

2,280

378 

341 

161 

450 

500 

516 

595 

583 

533 

437 

360 

584

5,390

356 

527 

622 

418 

487 

338 

555 

301 

279 

229 

202 

263

4,620

469 

367 

383 

413 

449 

535 

555 

532 

104 

329 

272 

378

4,790

475 

515 

383 

502 

504 

596 

507 

281 

604 

391 

403 

393

5.550
376 WATER RESOURCES OF HAWAII, 1912.

Monthly discharge of Kohala ditch at Awini weir, near Kohala, Hawaii, for 1907-1912 

Continued.

Month.

1912.

February ............ ......... .... . . . . .........

Aprfl.. ...................................................

May......................................................

June. ....................................................

July............................ .......... ............

October. .................................................

The year................. .... .. ............

Discharge in million gallons.

Maximum.

12.00 

20.70 

20.70 

20.70 

20.70 

20.70 

20.70 

16.90 

20.70 

20.70 

20.70 

20.70

20.70

Minimum.

1.50 

1.48 

18.30 

18.30 

8.82 

5.16 

6.17 

2.66 

2.66 

2.66 

7.46 

7.90

1.48

Mean.

4.63 

8.85 

20.00 

19.60 

13.70 

13.90 

11.50 

8.08 

10.60 

9.43 

15.10 

12.70

12.30

Run-off 

(total in 

million 

gallons).

143 

257 

619 

589 

426 

417 

357 

251 

319 

292 

454 

393

4,520

Daily discharge, in million gallons, of Kohala ditch at HonoTcane weir, near Kohala,,

Hawaii, for 1907.

Day.

1................................ ... ..... .........

2.....................................................

3.............. .... ..... . . ...

4.......................... .... .. .. .........

5............................... .....................

6........................ . .... ... .. ........

7................................ ..... ..............

8

9.....................................................

10.......................... .. .. ... ........

11.......................... ... .. .. ..... ..

12................... .....

13.......................... .... ... .... .......

14............ ....

15. ..................................... .... ........

16.................... ... . .... .... ........

17.....................................................

18................... ... .

19................................ . .. ... ........

20........ .......

21.....................................................

22.................... .... ... . ... ... .. ..

23................................ .... ..... ........

24........ ....

25.....................................................

26......................;............... ..............

27.....................................................

28............. ... . . .. ...

29.......................... .... ... ... ........

30....... ... .

31.............. ..... ... ... ...

July.

13.20

12.50

5.41

16.70

15.50

17.10

11.90

16.60

13.00

12.40

11.90

21.10

7.58

7.05

11.70

11.60

11.90

13.10

.48

10.20

.48

.48

2.26

4.28

10.60

14.50

12.80

1.67

5.41

10.20

16.40

Aug.

10.60

14.50

17.10

.48

1.67

8.63

1.67

2.85

.48

.48

.48

2.26

6.50

.48

.48

5.96

10.60

8.63

8.63

4.85

6.50

11.90

16.70

13.70

.48

.48

2.26

9.65

13.70

Sept.

18.40

18.80

20.30

18.40

20.60

19.20

13.10

19.60

20.60

16.60

17.80

13.80

13.10

20.30

16.10

14.80

14.80

13.00

15.10

11.60

13.10

1.68

1.68

2.94

6.74

10.60

2.94

2.94

6.17

10.00

........

Oct.

6.74

7.87

11.10

11.60

1.68

1.68

1.68

2.94

6.74

3.54

4.72

9.51

13.80

12.10

5.31

12.10

1.68

1.68

1.68

1.68

1.68

1.68

2.94

6.74

12.60

13.80

7.31

1.68

6.17

7.87

4.72

Nov.

4.13

7.31

1.68

1.68

4.13

6.74

11.10

13.10

1.68

6.74

12.10

12.10

13.10

14.30

10.60

12.10

13.10

11.90

12.30

11.10

11.60

8.97

3.54

2.94

8.42

8.97

6.74

1.68

8.42

11.60

Dec.

13.10

14.30

15.00

13.60

14.00

11.10

11.50

12.70

12.80

11.40

10.60

11.30

12.10

6.74

11.10

15.70

13.20

11.90

11.90

11.20

11.20

11.20

11.20

11.20

13.90

12.50

11.10

6.74

1.68

1.68

1.68
ISLAND OP HAWAII. 377

Daily discharge, in million gallons, of Kohala ditch at Honokane weir, near Kohala,

Hawaii, far 1908.

Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

2.94.

2.94

2.94

7.87

10.60

12.10

13.10

14.80

15.70

16.60

11.40

10.30

10.70

10.70

1.68

2.94

7.87

11.10

11.10

7.87

11.10

13.80

13.70

12.20

11.80

12.20

10.50

10.20

4.72

2.94

1.68

Feb.

6.74

6.74

2.94

5.31

2.94

2.94

2.94

2.94

2.94

7.87

11.10

14.30

14.80

12.00

12.10

13.10

12.10

13.10

11.90

12.30

10.70

11.30

11.40

10.60

9.87

9.90

9.20

9.56

9.56

Mar.

9.55

9.16

9.90

9.90

10.30

IS. 70

6.74

8.63

11.30

9.98

9.87

9.90

9.21

9.21

9.90

12.10

11.00

9.89

9.14

8.88

9.16

9.16

8.86

8.86

9.21

9.21

8.52

8.52

8.48

8.48

8.48

Apr.

17.00

11.10

5.31

5.31

8.97

12.10

15.30

13.10

8.42

7.87

6.74

5.31

2.94

2.94

2.94

2.94

2.94

2.94

2.94

2.94

2.94

5.31

6.74

8.97

12.10

12.30

11.30

10.60

9.14

10.70

May.

10.70

10.40

12.70

4.13

5.31

2.94

2.94

2.94

2.94

2.94

2.94

5.31

8.97

10.00

11.10

12.10

7.87

7.87

6.74

7.87

8.97

10.00

6.74

7.87

5.31

5.31

5.31

6.74

6.74

7.87

8.97

June.

11.10

13.10

13.50

12.10

10.00

7.87

8.97

10.00

6.74

7.87

7.87

5.31

5.31

2.94

2.94

2.94

4.13

5.31

2.94

2.94

2.94

2.94

2.94

2.94

2.94

4.13

5.31

6.74

8.97

7.87

July.

6.99

4.62

4.62

4.62

4.62

5.82

5.82

9.55

8.43

4.62

5.82

6.99

8.43

4.62

5.82

6.99

8.43

6.99

4.62

5.82

6.99

6.99

9.55

9.55

4.62

4.62

4.62

4.62

4.62

4.62

4.62

Aug.

4.62

4.26

5.82

6.99

6.99

4.62

4.62

4.62

5.82

6.99

6.99

8.43

6.99

4.62

462

4.62

5.82

6.99

8.43

9.55

11.70

12.80

11.70

6.99

4.62

4.62

4.62

5.82

6.99

4.62

4.62

Sept.

4.62

4.62

5.82

6.99

8.43

9.55

11.20

11.70

12.30

9.55

4.62

4.62

5.82

6.99

6.99

5.82

6.99

4.62

4.62

4.62

4.62

5.82

6.99

8.43

9.55

9.55

10.60

8.43

9.55

10.60

Oct.

11.70

12.80

13.80

16.00

16.90

11.70

9.55

10.60

11.70

11.90

10.20

10.30

10.50

10.50

4.62

4.62

5.82

4.62

6.99

9.55

4.62

5.82

6.99

8.43

9.55

10.60

11.70

11.60

9.65

9.85

9.77

Nov.

12.20

10.30

9.98

9.87

10.60

4.62

5.82

5.82

9.55

11.70

9.85

9.78

7.66

9.02

9.48

9.48

9.87

10.70

11.90

5.82

10.00

9.35

9.18

9.64

10.10

8.43

4.62

4.62

4.62

4.62

Dec.

4.62

4.62

4.62

5.82

6.99

4.62

4.62

4.62

4.62

4.62

5.82

6.99

9.55

10.60

11.20

11.70

4.62

4.62

4.62

4.62

4.62

5.82

6.99

8.43

4.62

4.62

5.82

6.99

8.43

9.55

10.60

Daily discharge, in -million gallons, of Kohala ditch at Honokane weir, near Kohala,

Hawaii, for 1909.

Day.

1.... ...........

2...............

3...............

4...............

5...............

6............'...

7...............

8...............

9...............

10...............

11..............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22L...... ........

23...............

24...............

25...............

26...............

27...............

28..............

29...............

30...............

31...............

Jan.

11.20

11.20

11.70

11.70

11.70

12.80

13.80

13.10

11.90

12.80

12.90

13.00

13.80

14.00

13.20

13.60

12.40

12.70

12.70

12.70

12.70

12.70

4.62

4.62

4.62

4.62

4.62

4.62

5.82

5.82

4.62

Feb.

4.62

5.82

6.99

8.43

9.55

4.62

5.82

6.99

9.55

10.60

11.70

4.62

5.82

6.99

8.43

9.55

4.62

4.62

5.82

6.99

6.99

4.62

4.62

4.62

4.62

4.62

4.62

4.62

Mar.

4.62

4.62

4.62

4.62

4.62

4.62

4.62

5.82

6.99

6.99

4.62

4.62

5.82

6.99

ft QO

4.62

4.62

4.62

4.62

4.62

A ftO

4.62

4.62

4.62

4.62

A ftO

4.62

4.62

5.82

6 QQ

8.43

Apr.

8.99

9.55

4.62

4.62

4.62

4.62

4.62

5.82

6.41

6.99

8.43

8.99

8.99

9.55

10.10

10.60

11.20

11.70

12.30

13.30

14.30

1 C Kf\

16.50

16.90

16.50

14.50

13.70

IKIO

10.70

10.70

May.

13.20

12.10

12.50

6.74

4.62

4.62

5.82

6.99

8.43

8.43

9.55

10.60

11.20

4.62

5.82

fi QQ

8.43

9.55

10.60

10.60

11.20

11.70

10.30

U w

13 60

4.62

A CO

4.62

4.62

5 82

6 99

June.

5.99

7.28

7.94

10.40

11.30

12.20

0 V,

10.60

8.39

8.06

9.48

9 64

17.80

4.62

g gg

8 43

9

CK

10.60

1 9 ftfi

14.80

19 ftft

13.00

11.50

11.20

10 Oft

13.10

13.00

9

10

8

*79

10 40

July.

12.00

10.90

10.80

9.18

9.98

9.87

11.90

10.30

11.50

14.10

15.30

10.30

10.30

7.65

7.65

7.65

7.65

7.65

7.65

7.65

7.65

7.65

7.65

10.00

7.65

7.65

7.65

7.65

7.65

Aug.

8.85

10.00

12.60

13.70

14.80

15.80

16.80

15.80

16.80

1"? ftft

13.80

14.30

13.10

13 60

13 60

13.20

13.20 10 70

11.70

9

CQ

10.70 9 48

9

KA

10 (\f\

 in Kfl

11 40

10.60

15.20

11.90

11. CO

9.02

Sept.

10.60

10.60

9.90

9.56

9.55

9.55

9.51

9.51

10.20

10.60

11.90

10.30

14.80

21 30

15.60

10.70

10. 30

20.10

Oft OA

14.20

14.80

9 t;fi

13.10

15.30

15.30

14.60

16 40

14.80

11.60

Oct.

10.70

11.80

14.80

12.10

11.80

11.90

9.77

9.89

9.20

9.21

12.20

13.10

10.30

10.30

9 48

9.16

9.21

9 91

9 90

9 19

12.10

16.40

14.20

13.50

12.10

11.70

11.70

10.60

10.30

Q Oft

Nov.

12.50

11.00

15.20

15.20

14.40

10.50

10.60

13.70

14.70

14.70

15.20

11.20

16.30

16.30

14.70

19 fifi

10.20

10.60

9 48

9 16"

9 20

9.21

9 91

9 87

9 87

n on

10.50

9

07

& 91

9 10

D'ec.

9.21

9.55

9.19

9.19

8.48

8

AQ

8,12

7.76

7.76

7.76

7.76

7.76

7.76

7.76

7 40

7 40

9.21

12.20

14.10

12.20

16.10

46.20

14.10

13.10

10.60

13.10

11.10

11.60

9

7Q

10 40
378 WATEB BESOUECES OF HAWAII, 1912.

Daily discharge, in million gallons, of Kohala ditch at Honokane weir, near Kohala,

Hawaii, for 1910.

Day.

1...............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30............... 

31...............

Jan.

9.14

8.47

8.47

8.47

11.60

15.30

10.50

11.10

8.41

12.10

11.90

14.80

15.30

15.30

12.70

13.60

14.60

20.10

15.30

16.50

16.50

12.70

12.70

11.80

10.00

10.00

10.00

10.00

10.00

10.00 

10.00

Feb.

10.00

8.85

10.00

11.50

13.10

13.70

14.80

14.80

15.80

12.40

12.10

11.90

19.00

14.80

12.80

13.00

13.00

12.60

12.30

13.50

13.10

12.60

12.60

15.30

13.00

13.80

15.20

15.70

" """-

Mar.

16.10

15.80

14.10

12.00

12.00

14.80

15.80

15.80

12.10

12.70

H v\

13.70

13.40

13.00

12.50

12.50

12.80

12.40

12.40

17.90

16.50

16.50

 17.90

19.00

17.90

16.50

17.90

20.10

20.10

12.30

7.65

Apr.

8.- 85

10.90

11.50

14.80

15.80

1 9 ftft

1 3 7ft

U Vf\

12.00

13.70

14.80

15.80

13.90

U ^n

14.30

13.70

14.10

14.10

8.54

8.85

12.00

10 90

U vi

11.90

U Srt

15.80

15.30

15.20

16.10

May.

7.65

8.85

9 44

10.00

8.85

9 44

,7.65

7.65

8.85

8.85

9 44

10.00

11.50

1 9 fift

1^1 7ft

8.85

9 44

11.50

10.00

11.50

7.32

10.50

13.60

15.40

15.60

15.60

15.90

15.50

14.00

14.70

9.78

June.

10.00

10.90

12.00

13.70

9 44

10.00

in on

8.85

8.85

10.00

12.00

7.65

8.85

7 65

7.65

7.65

7.65

7.65

10.00

11.50

10.00

8.85

10.00

19 Aft

13.10

13.70

13.70

13.70

14.20

July.

17.60

17.10

17.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

12.30

11.10

11.10

12.30

14.90

16.00

16.60

17.10

17.60

19.20

19.20

11,10

11.10

12.30

14.90

16.00

16.00 

16.60

Aug.

16.00

16.00

11. 10

12.30

12.30

14.30

11.10

11.10

12.30

1 9 ^Ifl

19 on

12.90

11.10

11.10

12.30

1 ^ 4ft

11.90

10.40

11.60

22.20

14.20

11.10

12.30

14 Ifl

15.40

16.60

18.20

n an

11.30 

12.30

Sept.

12.80

10.50

11.80

9.98

11.30

11.00

11.70

12.00

12.30

12.60

12.60

11.90

11.20

11.20

12.60

12.20

10.70

10.60

10.30

9 91

9.19

9 in

9.13

9.13

9 1O

9.13

9

1<(

9.13

9 fl<i

12.50

Oct.

12.30

12.30

12.10

12.30

10.10

10.20

10.20

14.10

14.10

15.30

16.50

12.10

11.00

8

CQ

9 14

9 14

9 14

7.76

8.14

8,14

14.00

U vi

11.80

10.40

9.77

10.60

8.83

11.00

1 9 fift

11.50 

10.50

Nov.

10.60

9.87

9.87

9.20

8.86

9.90

9.19

9.19

9.19

9.13

10.20

10.20

9.80

9.13

9.13

8.12

12.10

14.10

11.10

14.90

14.90

14.90

20.90

20.10

16.00

12.60

13.00

11.90

22.20

18.10

Dec.

9.82

9.82

11.10

11.10

11.10

11.10

11.10

11.70

13.40

14.90

13.60

13.60

14.10

13.10

13.10

13.00

13.10

12.30

12.40

11.40

11.10

11.10

11.10

11.10

11.52

12.10

12.10

12.10

12.10

11.80 

11.80

Daily discharge, in million gallons, of Kohala ditch at Honokane weir, near Kohala,

Hawaii, for 1911.

Day.

1...............

3...............

4...............

5...............

6...............

7...............

8...............

9...............

10...............

11...............

12...............

13:..............

14...............

15...............

16...............

17...............

18...............

19............... 

20...............

21...............

22...............

23...............

24...............

25...............

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

16.0

11.1

12.9

11.1

11.1

12.3

14.9

18.7

18.7

18.7

18.7

18.7

19.2

19.2

19.2

18.2

17.1

17.1

19.2 

'14.8

13.1

13.0

22.0

19.2

17.1

12.3

12.3

11.1

12.3

12.3

12.3

Feb.

9.82

9 CO

9.82

9.82

9.82

9.82

9.82

9.82

9.82

9.82

11.10

11.10

12.30

12.90

13.40

13.40

14.90

15.50 

15.50

16.00

17.10

18.70

19.20

20.80

22.00

19.20

11.10

Mar.

16.00

n Qft

U on

12.40

12.40

12.10

12.10

12.30

11.40

i<i nn

13.00

13.10

11.50

10.30

10.40

10.40

10.10

11.10

12.30 

14.90

14.90

16.60

18.20

18.20

19.70

13.30

12.30

9.78

9.64

10.20

18.10

Apr.

i 1* 4

id ^

13.4

14.9

17.2

n

o

17.6

17.6

13.9

n o

n o

12.4

13.0

12.3

11.1

19 7

18.1

18.1

18.1

10 1

18.1

18.1

18.1

16.9

11.1

11.1

11.1

19 ^

13.4

14.9

May.

19 ^

13.4

14 9

U Q

14.9

14.9

19 ^

14 0

11.1 11.1

11.1

13.4

14 Q

13.4

11.1

11.1

11.1

11.1

12.3

19 ^

12.3

13.4

16.0

15.8

13.1

13.5

13.6

12.8

13.7

13.7

13.7

June.

21.7

19 9

18.5

13.4

13.4

12.3

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1 

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

July.

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

12.3

12.3

14.9

14 Q

16.0

17.1

13.8

13.8

13.9

14.4

14.5

14.5

13.8

13.8

13.8

Aug.

11.7

11.7

11.7

11.0

10.3

10.6

10.6

10.6

11.5

11.7

11.0

12.5

13.0

13.0

13.0

13.0

13.1

13.1

13.1

12.8

11.9

11.9

11.4

11.7

11.7

11.7

11.7

11.7

12.0

12.0

12.0

Sept.

13.4

13.4

13.4

11.1

12.3

13.4

11.1

11.1

12.3

12.3

11.1

11.1

12.3

13.4

11.1

11.1

11.1

11.1

11.1 

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

11.1

Oct.

13.40

13.40

13.40

11.10

12.30

12.90 i<i 4n

14.90

14.90

16.00

16.00

16.00

17.10

18.20

18.20

18.20

13.60

13.00

10.60 

10.60

11.10

11.10

10.10

10.10

10.50

9.89

10.30

9.98

9.98

9.89

9.89

Nov.

11.30

11.00

11.00

10.50

13.10

14.30

13.90

13.60

13.90

14.30

13.90

13.10

13.50

13.90

13.60

13.90

11.10

11.10

11.10 

11.10

11.10

12.30

13.40

13. 40

13.40

9.28

10.10

10.10

10.40

10.40

Dec.

13.90

14.30

13.60

12.90

12.90

12.90

14.00

13. BO

12.80 19 of>

12.90

9.98

10.90

11.10

11.10

11.10

11.10

11.10

11.10 

11.10

11.10

11.10

12.30

12.80

11.80

12.70

12.30

13.10

14.00

14.00

14.70
ISLAND OP HAWAH. 379

Daily discharge, in million gallons, of Kohala ditch at Honokane weir, near Kohala,

Hawaii, for 1912.

. Day.

1. ..............

2...............

3...............

4...............

5...............

6...............

7...............

8...............

9.... ...........

10...............

11...............

12...............

13...............

14...............

15...............

16...............

17...............

18...............

19...............

20...............

21...............

22...............

23...............

24...............

25.. . .

26...............

27...............

28...............

29...............

30...............

31...............

Jan.

14.50

13.70

13.80

14.00

14.40

12.50

12.50

12.40

13.00

11.50

11.20

11.40

11.10

11.00

11.00

9.90

9.90

9.90

9.90

9.87

9.87

9.80

9.80

9.80

13.20

12.00

11.20

10.80

10.80

10.10

9.69

Feb.

9.69

9.69

13.10

14.30

15.40

11.90

10.80

10.40

9.69

9.70

9.55

9.90

13.50

13.10

10.50

10.60

10.30

9.90

12.50

13.10

30.80

30.80

18.50

14.30

14.30

14.30

16.10

26.50

26.50

Mar.

11.10

11.10

11.10

11.10

12.30

12.30

12.30

13.40

13.40

13.40

13.40

11.10

11.10

11.10

12.30

12.30

13.40

11.10

11.10

11.10

11.10

11.10

12.30

12.30

12.30

11.10

11.10

11.10

12.30

11.10

11.10

Apr.

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

12.30

12.30

12.30

12.30

12.30

12.30

12.30

13.40

13.40

13.40

13.40

13.40

13.40

13.40

13.40

13.40

13.40

May.

16.00

11.10

11.10

11.10 19 <tn

12.30

n on

14.90

14.90

14.90

17.10

18.20

12.80

11.50

11.40

13.90

13.90

13.90

13.80

19.20

13.90

11.50

11.50

13.50

13.90

16.00

16.00

13.60

14.80

13.90

June.

12.70

12.70

11.60

10.20

10.30

10.60

10.60

12.40

13.60

11.10

11.10

11.10

13.40

14.90

14.90

11.10

11.10

14.90

12.30

14.90

16.60

17.60

17.60

16.00

17.60

17.60

13.60

12.10

10.30

11.20

July.

11.10

11.40

12.00

12.30

12.30

12.90

11.10

11.10

13.40

15.40

12.00

12.10

12.10

12.60

13.00

13.00

12.30

12.30

10.90

10.90

10.90

10.90

11.50

12.60

13.50

10.40

10.40

10.10

10.10

9; 46

9.56

Aug.

10.20

10.90

11.30

11.30

10.90

10.90

10.90

10.90

14.90

14.90

16.00

16.00

14.90

14.90

16.00

12.30

11.50

11.10

12.10

10.10

10.20

10.60

10.60

9.90

9.90

9.87

10.30

12.70

11.00

10.60

10.60

Sept.

10.60

16.00

11.10

11.10

14.90

16.00

16.00

16.00

16.00

11.90

11.30

11.90

11.50

11.20

11.10

14.10

12.70

10.30

11.10

10.60

11.50

10.60

10.40

9.98

9.98

9.98

9.21

9.19

9.19

10.20

Oct.

14.30

13.00

12.70

13.80

11.60

9.98

9.90

9.54

9.54

9.54

9.54

9.54

9.19

11.60

11.60

10.60

9.48

9.16

10.50

10.50

10.50

9.98

14.90

14.90

12.30

11.10

11.10

11.10

14.90

13.60

13.30

Nov.

13.30

12.40

12.20

10.40

11.10

10.40

10.40

10.50

12.30

11.10

11.10

11.10

11.10

11.10

11.10

11.10

11.10

-11. 10

11.10

11.10

11.10

12.30

13.40

13.10

12.80

13.00

12.60

12.60

13.00

13.00

Dec.

11.10

13.40

16.60

12.60

12.30

12.30

12.80

14.90

16.00

12.80

12.30

11.20

11.50

11.50

11.50

11.20

10.90

12.30

11.20

12.60

12.70

12.70

12.70

11.10

11.10

11.10

12.90

12.80

16.00

12.40

12.80

NOTE. The Niulii weir measures the discharge of the Honokane Stream, east and west branches, and 

also flow over Awini weir when the combined discharge is not over 30 million gallons (except for seepage

Monthly discharge of Kohala ditch at Honokane weir, near Kohala, Hawaii, for 1907.

Month.

July.....................................................

August. .....................................I...........

September. ..............................................

October. .................................................

December ................................................

The period....................... ..................

Discharge in million gallons.

Maximum.

21.10 

17.10 

20.60 

13.80 

14.30 

15.70

Minimum.

0.48 

.48 

1.68 

1.68 

1.68 

1.68

Mean.

10.30 

8.30 

13.20 

6.03 

8.46 

11.00

9.22

Run-off 

(total in 

million 

gallons).

320 

183 

395 

187 

254 

339

1,680
380 WATEE BESOTJBCES OF HAWAII, 1912.

Monthly discharge of Kohala ditch at Honokane weir, near Kohala, Hawaii, for 1908-1912.

Month.

1908.

March. ...................................................

April....................................................

May.....................................................

July.....................................................

December. ...............................................

The year. ..........................................

1909.

April....................................................

May.....................................................

July.....................................................

October. .................................................

December. ...............................................

The year. ..........................................

1910.

March..... ....

April.....................................................

May......................................................

July......................................................

August...................................................

1911.

May

July......................................................

The year. ..........................................

1912.

April.....................................................

May....

The year. ..........................................

Discharge in million gallons.

Maximum.

16.60 

14.80 

13.70 

17.00 

12.70 

13.50 

9.55 

12.80 

12.30 

16.90 

12. 20 

11.70

17.00

14.00 

11.70 

8.43 

16.90 

13.60 

17.80 

15.30 

17.80 

45.00 

16.40 

16.30 

46.20

46.20

20.10 

19.00 

20.10 

22.60 

15.90 

14.20 

19.20 

22.20 

12.80 

16.50 

22.20 

14.90

22.60

22.00 

22.00 

19.70 

18.10 

16.00 

21.70 

17.10 

13. 10 

13.40 

18.20 

14.30 

14.70

22.00

14.50 

30.80 

13.40 

13.40 

19.20 

17.60 

15.40 

16.00 

16.00 

14.90 

13.40 

16.60

30.80

Minimum.

1.68 

2.94 

6.74 

2.94 

2.94 

2.94 

4.62 

4.62 

4.62 

4.62 

4.62 

4.62

1.68

4.62 

4.62 

4.62 

4.62 

4.62 

4.62 

7.65 

8.85 

9.51 

9.16 

9.16 

7.40

4.62

8.41 

8.85 

7.65 

8.54 

7.32 

7.65 

11.10 

10.40 

9.03 

7.76 

8.12 

9.82

7.32

11.10 

9.82 

9.64 

11.10 

11.10 

11.10 

11.10 

10.30 

11.10 

9.89 

9.28 

9.98

9.28

9.69 

9.55 

11.10 

11.10 

11.10 

10.20 

9.46 

9.87 

9.19 

9.16 

11.10 

11.10

9.19

Mean.

9.36 

9.08 

9.52 

7.67 

7.05 

6.39 

6.12 

6.51 

7.49 

9.77 

8.64 

6.47

7.84

10.40 

6.65 

5.24 

10.20 

8.42 

10.40 

9.24 

12.80 

14.50 

11.20 

11.90 

11.20

10.20

11.70 

13.30 

14.80 

13.40 

11.10 

10.50 

13.80 

13.60 

10.80 

10.80 

12.30 

12.00

12,30

15.60 

12.80 

13.00 

14.70 

13.20 

12.20 

12.60 

11.90 

11.60 

12.90 

12.20 

12.40

13.00

11.40 

14.50 

11.80 

12.10 

14.10 

13.20 

11.70 

11.90 

11.90 

11.40 

11.70 

12.60

12.30

Run-off 

(total in 

million 

gallons).

290 

263 

295 

230 

219 

192 

190 

202 

225 

303 

259 

201

2,870

322 

186 

162 

306 

261 

312 

286 

397 

435 

346 

356 

347

3,720

362 

371 

459 

403 

344 

315 

429 

420 

325 

336 

368 

373

4,500

484 

372 

404 

442 

408 

366 

391 

369 

349 

400 

367 

3S5

4,740

355 

420 

366 

364 

436 

396 

364 

368 

356 

353 

352 

389

4.520
BAIN GAGING. 381

MISCELLANEOUS MEASUREMENTS.

Miscellaneous measurements on Hawaii in 1912.

Date.

Oct. 11

Dec. 5

July 15

Oct. 11

Dec. 5

July 15

Sept. 18

18

18

18

19

19

19

19

19

19

Oct. 9

9

9

12

10

10

9

10

10

Feb. 8

Dec. 14

Sept. 5

21

Oct. 19

Stream.

......do.......................

Plikihafl ., .

.....do.......................

.....do.......................

Fohakunanaka .......... .

Honolii.... .................

Kikola........ ..............

Kaleie.. .....................

Kapahehe. ............

Waiaama............... ...

Wat"1 ?*""-. ..,--. , - No. 1....... .................

Oo. 

Tailrace, Hilo Electric Light

Co.

Locality.

road, near Hilo.

road, near Hilo.

road, near Hilo.

.....do................................................

.....do................................................

.....do................................................

.....do................................................

.....do................................................

.....do................................................

.....do................................................

.....do................................................

Hilo. .. . ............................................

Discharge.

Sec.-ft. 

2.18

6.80

33.20

9.36

25.30

33.90

64.20

17.20

2.71

21.50

16.57

5.30

4.61

11.80

3.46

.33

3.87

4.06

8.43

8.25

4.16

5.35

6.57

.28

65.40

17.40

8.38

10.90

25.00

RAIN GAGING.

The yearly rainfall of the Hawaiian Islands is extremely variable, 

ranging from a few inches at several low-level leaward localities to 

more than 400 inches, usually at elevations above 2,000 feet and on 

the windward sides of the islands. Valleys lying on the same sides of 

the islands and within a few miles of each other may have a variation 

in mean annual precipitation of several hundred per cent. The rainfall may also vary greatly at different elevations in the same valley. 

As a rule, the zone of heaviest precipitation is on the windward sides 

of the islands, at elevations 2,000 to 3,000 feet above sea level.

Generally the daily rain gages maintained by the United States 

Weather Bureau are located at low levels. Lack of funds and the 

absence of inhabitants at high-level localities have prevented the 

maintenance of Weather Bureau stations at high levels, although 

daily records for a number of places, are furnished that bureau by 

occupants and caretakers of mountain houses, ranches, etc. The 

data furnished by the Weather Bureau are, therefore, generally of 

little value in their relation to stream run-off.

When high levels are accessible and, insofar as funds are available, 

high-level rain gages, which are read monthly or bimonthly, have
382 . WATER RESOURCES OF HAWAII, 1912.

been established by the Geological Survey and valuable records have 

been obtained. To accurately determine the precipitation of the Territory would require the installation of many more gages and the construction of many miles of trails.

Acknowledgment for cooperation in furnishing rainfall data is due 

to the following: Kauai E. A. Knudsen, Kekaha Sugar Co., Makee 

Sugar Co., Hawaiian Sugar Co., Koloa Plantation, Grove Farm Plantation, W. F. Sanborn, of Princeville ranch, and A. Menefoglio, of 

Kauai Electric Co.; Oahu E. E. Miller and F. Meyer; Maui George 

Gibb, E. Brecht, H. B. Penhallow, David Fleming, Honolua ranch, 

Hawaiian Commercial & Sugar Co., S. E. Hubbard, and E. Brecht; 

Hawaii Hawaii Mill Co., P. W. P. Bluett, James Henderson, George 

F. Whittemore, W. S. May, and C. F. dark.

The following tables show the precipitation at stations maintained 

by the Geological Survey and give precipitation data furnished from 

private sources which are not included in United States Weather 

Bureau records, to which those interested in further data are 

referred:
Precipitation at rainfall stations maintained during 1

KATJAI.

 , t f 

Station.

Aakukui, near Lthue....... ................................

Camp No. 7, Mesa, east of Waimea River near its mouth. . . .

Hiloa-Manawaiopuna divide ................................

Hukipo, mountain side northwest of Waimea drainage basin. 

TTft^Wia, TTahana-Malrnom* clraiTia-ge1 hftsfri . ,

Lehuamakanoi, Waimea drainage basin. ....................

Makaweli,on inesa between Waimea and Hanapepe Rivers.

Waiakoali....... ...........................................

Wainiha, power house ......................................

\

Elevation 

above 

sea 

level 

(feet).

350 

250 

150 

911 

530 

2.080 

400 

3,750

4,450 

4.023

3,550

3,950 

3,932

100 

3,500

1,200

2,100 

1,310 

850 

3,723 

3,130

2,589

2,748

3,500 

3,450

3,600

5,080

600 

700 

1,123 

125 

1,900 

525

Precip

Jan.

2.19 

2.00 

1.24 

3.20 

4.69 

6.14 

.35

1.58

4.97 

4.31 

.34 

5.40

5.40

4.20 

3.72 

5.12 

4.96 

5.09

Feb.

2.70 

1.15 

.74 

2.40 

4.25 

7.80 

.31

.87

4.73 

4.30 

.20 

10.40

4.20

3.80 

9.55 

4.98 

6.96 

6.61

Mar.

7.82 

.35 

00 

8.40 

6.42 

14.50 

.13

.09

6.79 

, 3.00 

.13 

10.80

1.60

11.20 

21.95 

11.47 

10.30 

19.57

Apr.

2.76 

.48 

00 

10.20 

8.45 

14.00 

.26

.30

10.10 

5.08 

.29 

4.70

3.40

9.66 

17.40 

9.30

7.88 

15.48

May.

2.33 

.57 

.23 

8.00

8.48 

18.80 

.08

.80

10.20 

6.77 

.07 

3.00

1.00

7.00 

14.19 

7.22 

6.15 

11.46

June.

2.04 

.37 

00 

7.80 

5.36 

11.00 

1.26

.39

6.41 

4.57

.' .94 

2.00

2.00

4.60 

2.02 

4.66 

2.26 

8.08

o Gage read irregularly; monthly distribution not known.

6 Record started July 26; 46 inches in August, September, and October; gage visited Jan. 

c Gage read irregularly; monthly distribution not known; Dec. 29,1911, to Feb. 15,1912, a 

<* Record started Mar. 8; gage read irregularly.
Precipitation at rainfall stations maintained during 1912 

OAHTT.

Station.

Palolo Valley ...............................................

Elevation 

above 

Sea 

level 

(feet).

3,100

2,100

1,300

1,200

800 

600

Preci

Jan.

3.4 

1.54

Feb.

11.0 

4.32

Mar.

i7.3 

6.92

Apr.

14.3 

4.31

May.

9.3 

3.87

June

4.6 

1.6

MAUI.

Camp Olinda.... . ...........................................

lao Tableland. ..............................................

KulaWainolu.. .............................................

KulaWaiohuli..............................................

Puukukui.. .................................................

Puukukui Slope.... ................................ T ........

Kailua.... . . ..............

Old nlantation office ........................................

4,250

4,100

 1, 500

1,720

830

1,500

3,000

3,400

2,500

4,500

700

5,000'

2,500

4,300

1,550

4,250

1,535

90

1,200

806

760

1,000

2,000

650

1,160

100

0-98

1.40

2.20

.24

1.66

1.50

1.77

12.80

4.09-

i.50

3.60

2.96

.00

1.42

2.58

1.56

2.63

.90

2.66

3.14

(o)

14.52

9.82

(c)

3.63

1.90

1.20

2.40

9.00

46.32

29.74

1.14

7.16

11.62

5.64

19.18

6.98

10.08

15-12

(c)

12.72

7.51

13.00

.00

.00

.00

.00

7.00

60.00

13.00

53i52

31.02

.15

4.52

21.90

7.03

21.38

1.24

12.37

16.63

(c)

15.06

7.90

16.14

.00

2.97

1.20

1.75

8.60

92.00

27.00

42.96

35.74

.n

4.33

22.43

6.48

32.17

2.64

13.85

22.70

1.38

1.40

.34

5.60

.00

.00

.00

.00

2.00

29.00

7.50

7.92

7.51

.00

2.12

5.81

4.33

11.83

1.81

6.26

8.35

.44

1.13

.51

4.57

.00

.00

.00

.00

2.00

25.00

7.00

12.43

9.25

.00

1.43

4.35

2.04

9.56

.65

5.22

5.63

.53
p^

0

10

390 

70 

50 

375 

600 

175

2.65 

.03 

.42 

.'»2 

.15 

.16 

.05

1.69 

3.17 

1.93 

2.56 

2.54 

2.56 

2.79

.00 

1.88 

.52 

.52 

1.66 

.93 

1.40

1.92 

3.11

.74 

1.50 

2.74 

1.57 

2.61

.00 

.00 

.00 

.00 

.58 

.00 

.07

.00 

.35 

.00 

.00 

.10 

.00 

.27

j HAWAII.

D 

H . , .--_. 

Do......................................................

Do......................................................

Do......................................................

Do......................................................

Do.......................................................

Do......................................................

Do......................................................

Do......................................................

Do......................................................

Hawaii Mill Co.'s office near Hilo.. . .........................

Upper Koiawe in Kohala....... .............................

15

50

500

1,000

1,500

2,000

2,700

3,000

3,500

4,000

4,500

5,000

1,000

1,850

1,040

4,080

1,000

3,200

1,400

1,030

930

4,200

4,000

3,800

0.93

0.6

1.0

1.2

1.8

1.74

0.76

0.64

0.75

1.91

4.06

1.26

2.05

1.47

2.51

11.50

17.0

18.0'

22.2

25.2

25.60

18.32

22.40

12.31

15.12

30.97

10.66

14.91

12.21

8.30

10. CO

14.6

(0

28.8

33.0

23.86

17.84

35.20

11.51

24.64

42.27

14.32

21.61

(a)

17.53

8.71

13.20

14.2

19.0

27.8

33.2

33.20

17.58

33.20

13.35

23.28

49.25

16.44

22.61

11.24

16.86

11.40

18.35

14.99

22.27

5.90

7.3

8.7

11.0

12.6

11.30

8.04

15.10

7.29

10.04

21.75

6.60

10.21

3.71

7.62

3.27

7.76

5.45

8.48

5.86

8.1

8.9

10.2

11.3

14.00

8.40

13.30

5.08

8.95

18.42

6.82

9.56

3.49

8.85

1.97

8.63

6.47

 9.80

o Gage read irregularly; monthly distribution not known. 

6 Lost.

c No record.

d Established Oct. 1.

e Receiver stopped w

/Abandoned.

INDEX.

A.

Accuracy of discharge measurements, degree

of............................... 24

Acre-foot, definition of...................... 17

Ah Lo flume, Kaneohe, Oahu, Waikalua

ditch at......................... 128

Akulikuli Spring near Kapaa, Kauai........ 84

Aleamai S tream near Hilo, Hawaii.......... 381

Alo division weir, near Huelo, Maui, Koolau

ditchat......................... 209

Alo Stream near Huelo, Maui............. 168-169

Altitude of islands.......................... 30

Anahola ditch at Kiokala, near Kealia,

Kauai........................... 89-90

Anahola River at Kiokala, near Kealia,

Kauai........................... 88-89

near Kealia, Kauai...................... 87-88

Anahola River basin (Kauai), measurements

in............................... 87-90

Area of islands.............................. 30

Authority for investigations................. 9

Awini weir, near Kohala, Hawaii, Kohala

ditchat....................... 372-376

B. 

Bailey, C. T., work of....................... 25

Book, H. L., work of........................ 25

Bridge station, definition of................. 15

 C.

Cable station, definition of.................. 15

Center ditch near Huelo, Maui............ 186-188

Center ditch region, Maui, measurements

in............................. 186-188

China ditch near Hanalei, Kauai........... 92-93

Christiansen, E. O., work of................. 25

- Climate, character of........................ 33

College of Hawaii, near Honolulu, Oahu,

Manoa Stream at................ 108

Cooperation with Hawaii.................... 10

Current meters, use of....................... 13-15

D.

Definitions of terms...............__...... 16-17

Discharge, definition of...................... 16

field methods of measuring.............. 11-16

office methods of computing............. 19-22

Discharge measurements, accuracy of........ 24

tables of, explanation of.............. 22,23-24

Dort, J. C., work of......................... 25

Dort, S.W., work of........................ 25

E.

East Maui, miscellaneous measurements on.. 209 

Eleele, Kauai, Eleele ditch at................ 98

Hanapepe ditch at and near............. 57-^0

seepage from......................... 99

18

Eleele, Kauai, Wahiaua Stream at.......

Equivalents, list of.......................

Everett ditch (Maui). See Palolo ditch.

F.

Field data, accuracy and reliability of....... 24

Field methods of measuring stream flow..... 11-16

G.

Gage, automatic, description of.............. 16

Gage heights, table of, explanation of........ 22-23

Gaging stations, classes of.............. 11,15,19-20

lists of................................... 25-29

Geography, description of................... 29-33

Goo, E. E., work of.......................... 25

Goo, R. M. S., work of....................... 25

H.

Haiku ditch at Peahi weir, near Huelo, Maui. 208 

Haipuaena Stream near Huelo, Maui...... 164-166

Hakenanahu Stream at Lihue, Kauai....... 98

Halehaku Stream at Lihue, Kauai ........ 98

near Huelo, Maui...................... 194-195

Halehaku Stream (North Fork) at Waimea,

Kauai........................... 98

Halehaku weir, near Huelo, Maui, New

Hamakuaditch at............... 199

Halekua Stream near Waimea, Kauai....... 50

Halona Stream in Upper Waiahole Valley,

Oahu............................ 128

Halona Stream (North Fork) in Upper

Waiahole Valley, Oahu.......... 128

Hamakua ditch region, Maui, measurements

in............................. 188-208

Hamakua group of streams, Hawaii, measurements on................... 367-371

Hamakuapoko, Maui, Kaluanui ditch near. 205-206 

Hanalei, Kauai, China ditch near..:......... 92-93

Hanalei River near...................... 91-92

Kauaditch at........................... 98

Kiaiakuaditch at....................... 98

Kiaiakua stream at..................... 98

Kuna ditch near ....................... 93-95

Hanalei River basin (Kauai), measurements

in............................... 91-95

Hanamaulu ditch near Lihue, Kauai.:...... 70-71

Hanamaulu River at Kapaia, near Lihue,

Kauai........................... 64-66

Hanamaulu River basin (Kauai), measurements in........................ 64-66

Hanapepe ditch near Eleele, Kauai (at Hanapepe Falls)...................... 57-58

near Eleele, Kauai (at Koula)........... 59-60

near Hanapepe, Kauai.................. 60-61

near Makaueli, Kauai, at Hanapepe weir. 98

387
388 INDEX.

Hanapepe Falls, near Eleele, Kauai, Hanapepe ditch near.................. 57-58

Hanapepe River at...................... 62

Hanapepe River (East Branch) at....... 55

Hiloa ditch at........................... 62-63

Hanapepe River (Kauai), Manuahi Stream

above........................... 98

Hanapepe River basin (Kauai), measurements in........................ 55-63

Hanapepe River (East Branch) at Hanapepe

Falls, near Eleele, Kauai........ 55

Hanapepe River at Hanapepe Falls, near

Eleele, Kauai.................... 62

at Koula, near Eleele, Kauai............ 55-57

Hanapepe weir, near Makaueli, Kauai, Hanapepe ditch at.................... 98

Hanawai Stream near Papaikou, Hawaii.... 381

Hanawai Stream, tributary of, near Hilo,

Hawaii.......................... 381

Hardy, W.V., work of...................... 25

Hawaii, gaging stations on................... 29

miscellaneous measurements on......... 381

precipitation on......................... 385

Hawaiian Archipelago, altitude of........... 30

area of................................... 30

climate of............................... 33

geography of............................ 29-33

Hawaii College. See College of Hawaii.

Hilo, Hawaii, Aleamai Stream near.......... 381

Hanawai Stream, tributary of, near...... 381

Hilo Electric Light Co. weir near........ 381

tailrace at........................... 381

Honolii River near................. 213-215,381

Kaieie Stream near...................... 381

Kalooa Stream near..................... 381

Kapue flume near....................... 381

Kapue Rivernear....................... 381

Kawainui River near.................. 215-216

Kikola Stream near...................... 381

Kumunuiakea River near............... 381

M^ili River near........ ..-/?............ 381

^rt /{^^/1StreamneFx--cX"- ------------- 381

~l ( '? 5 ;P04akl!'*^H*a^ver "ear- ------------- 381

'' Pukihae River near..................... 381

', records of..... 216-367

Wailuku River rfear................... 212-213

Hilo Electric Light Co. tailrace at Hilo, Hawaii.. ........................... 381

Hilo Electric Light Co. weir at Wailuku

River, near Hilo, Hawaii........ 381

Hilo group of streams, Hawaii, measurements

in............................. 212-367

Hiloa ditch at Hanapepe Falls, near Eleele,

Kauai........................... 62-63

Homestead, Kauai, Lawai Stream at........ 98

Honokahau, Maui, Honolua ditch near...... 158

Honokahau ditch above Honolua Stream at

Honokahau, Maui............... 162

at Honokawai weir, near Honokahau,

Maui.......................... 160-161

at intake, near Honokahau, Maui....... 158

near Honokahau, Maui................ 159-160

Honokahau Stream basin (Maui), measurements in....................... 159-161

Honokane weir, near Kohala, Hawaii, Kohala

ditch at....................... 376-380

Honokawai ditch near Lahaina, Maui....... 157

Honokawai Stream basin (Maui), measurements in........................ 157

Honokawai weir, near Honokahau, Maui,

Honokahau ditch at........... 160-161

Honolii River near Hilo, Hawaii, at Kaiwiki.. ........................ 213-215

near Hilo, Hawaii, below mouth of Kikola Stream..................... 381

Honolua ditch near Honokahau, MauL...... 158

Honolua Stream, Maui, Honokahau ditch

above........................... 162

Honolua Stream basin (Maui), measurements

in............................... 158

Honolulu, Oahu, Kahuawai Spring near.. 110-111 

Lulumaho ditch near.................. 113-114

Mahoe Spring at or near........... 104-105,128

Manoa Stream near (at College of Hawaii) 108 

(at upper end of valley)........... 106-107

(at Waialae road).................. 108-109

Nuuanu Stream at.................... 111-113

(at Luakaha weir)................. 115-116

Pauoa Stream near...................... 109

Pukele Stream near................... 104-105

Waiomea Stream at................... 100-102

(above Pukele Stream)............ 102-104

Honomu, Hawaii, Honomu Stream at....... 381

Kapahehe Stream near.................. 381

Makea Stream near...................... 381

Makoewai Stream near.................. 381

Honopou Stream near Huelo, Maui........ 193-194

' Hoolawaliilii Stream near Huelo, Maui.... 190-191

Hoolawanui Stream near Huelo, Maui..... 191-193

Hooleinakaunualihua ditch (Kauai) below

county road..................... 98

Hooleinakaunualihua Stream below county

road (Kauai).................... 98

Howard, E. J., work of...................... 25

Huelo,Maui, Alo Stream near. ........."... 168-169

Center ditch near...................... 186-188

Haiku ditch near........................ 208

Haipuaena Stream near............... 164-166

Halehaku Stream near................ 194-195

Honopou Stream near................. 193-194

Hoolawaliilii Stream near.............. 190-191

Hoolawanui Stream near.............. 191-193

Kailua Stream near..................... 189

Koolau ditch near....................... 209

Lowrie ditch near....................... 207

Nailiilihaele Stream near.............. 188-189

New Hamakua ditch near............. 200-204

at Halehaku weir.................... 199

near Nailiilihaele weir.............. 198

Old Hamakua ditch at................ 204-205

Oopuola Stream near.................. 171-172

Opana ditch near...................... 196-197

Opana Stream near...................... 196

Puohakamoa Stream near............. 166-167

Spreckels ditch near................... 172-186

Waikamoi Stream near................ 169-171

Huleia River basin (Kauai), measurements

in............................... 63-64

Huleia River near Lihue, Kauai.......... 63-64,98
INDEX. 389

i.

lao Stream basin (Maui), measurements in. 137-140 

lao Stream near Wailuku, Maui........... 137-139

Investigations, authority for................. 9

scope of................................. 10-11

Irwins flume, Kailua Valley, Oahu, Makawao

ditch at......................... 128

Kaapaa, Kauai, Kaehulua Stream near...... 80-81

Kaehulua Stream (North Fork) near.... 79-80

Kaehulua Stream (South Fork) near..... 81-82

Kaapua Falls (Kauai), Kalihiwai River near 98 

Kaehulua Stream at Kuhinoa weir, near

Kapaa, Kauai................... 80-81

Kaehulua Stream basin (Kauai), measurements in......................... 79-82

Kaehulua Stream (North Fork) at Kainahola

weir, near Kapaa, Kauai........ 79-90

Kaehulua Stream (South Fork) at Wainamuamu weir, near Kapaa, Kauai... 81-82 

Kahfckuloa, near Waihee, Maui, Kahakuloa

Stream at..................... 129-130

near Wailuku, Maui, Kahakuloa Stream

above........................... 162

Kahakuloa Stream basin (Maui), measurements in__................... 129-130

Kahanaiki Stream in Kailua Valley, Oahu... 128 

Stream near Waimanalo, Oahu.......... 121

Kahiliholo Stream at Kilauea, Kauai........ 98

Kahoma ditch near Lahaina, Maui........ 156-157

Kahoma Stream b^asin (Maui), measurements

in............................. 155-157

Kahoma Stream near Lahaina, Maui........ 155

Kahuawai Spring near Honolulu, Oahu..... 110-

111,128 

near Honolulu, Oahu, Pauoa Stream

below........................... 109

Kaieie Stream near Hilo, Hawaii............ 381

Kailua Stream near Huelo, Maui............ 189

near Waimanalo, Oahu................. 122

near Wong Leong ditch, Kailua Valley,

Oahu............................ 128

Kailua Valley, box flume ditch in........... 128

Kahanaiki Stream in.................... 128

Makawao ditch in....................... 128

Kaimi Stream near AVaimanalo, Oahu....... 124

Kainahola weir, near Kapaa, Kauai, Kaehulua Stream (North Fork) at..... 79-80

Kaiwiki, near Hilo, Hawaii, Honolii River

at.!........................... 213-215

Kalihiwai ditch at Kilauea, Kauai........... 98

Kalihiwai River, Kauai, above mouth...,... 98 

near Kaapua Falls....................... 98

Kilauea, Kauai.......................... 90

Kalihiwai River (West Branch), Kauai,

above confluence................ 98

Kalihiwai River basin, Kauai, measurements

in............................... 90

Kalooa Stream near Hilo, Hawaii........... 381

Kaluanui ditch at Puuomalei, near Hamakuapoko, Maui................ 205-206

Kamakalepo S tream near Waimanalo, O ahu. 123 

Kamenehune ditch near Waimea, Kauai..... 47-48

Kamooloa ditch at Lihue, Kauai............ 98

Kanaha ditch near Lihue, Kauai............ 76-77

Kaneha ditch near Kealia, Kauai........... 86-87

Kaneohe, Oahu, Kepo ditch at.............. 128

Old Waikalua ditch at.................. 128

rice-mill ditch at........................ 128

Waikalua ditch at....................... 128

waste ditch at........................... 128

Kapaa, Kauai, Akulikuli Spring near........ 84

Kapaa River near....................... 82-84

Konohiki stream near................. 113-114

Kuehulua stream near................... 80-81

Kuehulua stream (North Fork) near..... 79-80

Kuehulua stream (South Fork) near..... 81-82

Kapaa River at Kapahi, near Kapaa, Kauai.. 82-84 

Kapaa River basin (Kauai), measurements

in....................................... 82-87

Kapahehe Stream near Honomu, Hawaii..... 381

Kapahi, near Kapaa, Kauai, Kapaa River at. 82-84 

Kapahi ditch at......................... 85-86

Kapaia, near Lihue, Kauai, Hanamaulu

River at......................... 64-66

Kapaia Stream (East Branch), Kauai, below

county road..................... 98

Kapeha Stream near Pepeekeo, Hawaii...... 381

Kapue flume near Hilo, Hawaii............. 3S1

Kapue River near Hilo, Hawaii............. 381

Kauaula ditch near Lahaina, Maui........ 152-154

Kauaula Stream basin (Maui), measurements

in............................. 151-154

Kauaula Stream near Lahaina, Maui...... 151-152

Kaua ditch at Hanalei, Kauai............... 98

Kauai, ditch seepage and losses on.......... 99-100

gaging station on........................ 25-26

miscellaneous measurements on......... 98

pumped water on....................... 99

Kauaikanana Stream near Waimea, Kauai... 98 

Kawaikoi Stream near Waimea, Kauai....... 35-37

Kawamui River at Pepeekeo, near Hilo,

Hawaii........................ 215-216

near Waipio, Hawaii.................. 367-368

Kawi Stream near Lihue, Kauai............ 75-76

Keahua Stream near Lihue, Kauai.......... 75

Kealia, Kauai, Anahola ditch near.......... 89-90

Anahola River near..................... 87-88

Kaneha ditch near...................... 86-87

Keanae, Maui, Koolau ditch near.......... 162-164

Kekaha ditch near Waimoa, Kauai.......... 40-45

Kennedy, H. H., work of.................... 25

Kepo ditch at Kaneohe, Oahu............... 128

Kiaiakua ditch at Hanalei, Kauai........... 98

Kiaiakua Stream at Hanalei, Kauai......... 98

Kikola Stream near Hilo, Hawaii............ 381

near Hilo, Hawaii, Honolii Eiver below. 381 

Kilauea, Kauai, Kahiliholo Stream at....... 98

Kalihiwai ditch at........................ 98

Kalihiwai River near.................... 90

Kilauea River at......................... 98

Moloaa Stream at........................ 98

Papaa Stream at......................... 98

Poakuma Stream-at..................... 98

Waiule ditch at.......................... 98

Kiokala, Anahola ditch at................... 89-90

Anahola River at........................ 87-89

Kohala ditch at Honokane weir, near Kohala,

Hawaii........................ 376-380

near Kohala, Hawaii.................. 371-380

near Kohala, Hawaii (at Awini weir).. 372-376
390 INDEX.

Page.

Kohala group of streams, Hawaii, measurements on...................... 371-380

Koiawa Stream near Waipio, Hawaii, Waipio

River below..................... 368

Koola, Kauai, Omuu Stream at.............. 98

Poeloelo Stream at...................... 98

Waihohonu Stream at................... 98

Wilcoxditch near........................ 98

Konohiki Stream at Makakualele makai weir,

near Kapaa, Kauai.............. 78-79

at Makakualele mauka weir, near Kapaa,

Kauai........................... 77-78

Konohiki Stream basin (Kauai), measurements in......................... 77-79

Koolau ditch near Huelo, Maui.............. 209

Koolau ditch near Keanae, Maui.......... 162-164

Koolau ditch region, Maui, measurements in 162-164

Koula, near Eleele, Kauai, Hanapepe ditch at 59-60

Hanapepe R iver at...................... 55-57

Kuhinoa weir, near Kapaa, Kauai, Kaehulua

Stream at....................... 80-81

Kukuihaele, Hawaii, New Hamakua ditch

near........................... 370-371

Kumunuiakea River near Hilo, Hawaii....... 381

Kuna ditch near Hanalei, Kauai............. 93-95

L.

Lahaina, Maui, discharge of pumps at..... 209-211

Honokawai ditch near................... 157

Kahoma ditch near.................... 156-157

Kahoma Stream near.................... 155

Kauaula ditch near.................... 152-154

Kauaula Stream near.................. 151-152

Lahainaluna Stream near.............. 154-155

Launiupoko Stream near.............. 149-150

Lahainaluna Stream basin (Maui), measurements in....................... 154-155

Lahainaluna Stream near Lahaina, Maui.. 154-155 

Larrison, G. K., work of..................... 25

Launiupoko Stream basin (Maui), measurements in....................... 149-150

Launiupoko Stream near Lahaina, Maui... 149-150 

Lawai, Kauai, Lawai ditch at............... 98

Lawai Stream at........................ 98

Lawai Stream at Homestead, Kauai......... 98

Lihue, Kauai, Hakenanahu Stream at....... 98

Lihue, Kauai, Halehaku Stream at.......... 98

Lihue, Kauai, Hanamaulu ditch near........ 70-71

Hanamaulu River near.................. 64-66

Huleia River near.................... 63-64,98

Kamooloa ditch at....................... 98

Kanaha ditch near...................... 76-77

Kawi Stream near....................... 75-76

Keahua Stream near..................... 75

Lihue ditch near........................ 68-69

NawiliwilvStream near.................. 98

Puhi Stream near....................... 98

Uhau lole Stream near.................. 73-74

Wailua River (North Fork) near........ 71-73

Wailua River (North Fork, East Branch

of) near.......................... 74

Wailua River (South Fork) near......... 66-68

Linoli Springs near Ponolu, Hawaii......... 381

Lowrie ditch at Opana weir, near Iluelo,

Maui............................ 207

Luakaha weir in Nuuanu Valley, near Honolulu, Oahu.................... 115-116

Lulumaho ditch in Nuuanu Valley, near

Honolulu, Oahu............... 113-114

Lumahai River basin (Kauai), measurements

in............................... 95

Lumahai River near Wainiha, KauaL....... 95

M.

McCandless ditch in Waiahole Valley........ 128

Mahoe Springs, Oahu, Pukele Stream at or

near....................... 104-105,128

MailiRiver near Hilo, Hawaii............... 381

Makakualele makai weir, near Kapaa, Kauai,

Konohiki Stream at............. 78-79

Makakualele mauka weir, near Kapaa, Bauai,

Konohiki Stream at............. 77-78

Makaueli, Kauai, Hanapepe ditch near...... 98

Makawao ditch at Irwins flume, Kailua Valley, Oahu....................... 128

near Waimanalo, Oahu.................. 125

Makawao Stream near Waimanalo, Oahu.. 124-125 

Makaweli, Kauai, Olokele ditch near........ 50-52

Makaweli River basin (Kauai), measurements in......................... 48-55

Makaweli River near Waimea, Kauai........ 48-50

Makea Stream near Honomu, Hawaii........ 381

Makoewai Stream near Honomu, Hawaii.... 381

Maniania ditch near Wailuku, Maui....... 139-140

Manianiaula, near Waikane, Oahu, Waiahole

Stream at..................... 117-119

Manoa Stream at College of Hawaii, near

Honolulu, Oahu................. 108

at Waialae road, near Honolulu, Oahu. 108-109 

near Honolulu, Oahu.................. 106-107

Manoa Stream basin (Oahu), measurements

in............................. 106-111

Manuahi Stream (Kauai) above Hanapepe

River............................ 98

Martin, W. F., work of...................... 25

Maui, gaging stations on..................... 27-29

miscellaneous measurements on........ 162,209

precipitation on......................... 384

pumped water on...................... 209-211

Miner's inch, definition of................... 17

Miscellaneous measurements on:

Hawaii.................................. 381

Kauai................................... 98

Maui.................................. 162,209

Oahu.................................... 128

Mohihi Stream near Waimea, Kauai......... 38-39

Moloaa Stream at Kilauea, Kauai............ 98

N.

Nailiilihaele Stream near Huelo, Maui..... 188-189

Nailiilihaele weir, near Huelo, Maui, New

Hamakua, ditch at.............. 198

Nawiliwili Stream near Lihue, Kauai........ 98

New Hamakua ditch at Halehaku weir, near

Huelo, Maui..................... 199

at Nailiilihaele weir, near Huelo, Maui... 198" 

at Waima Stream, near Waipio, Hawaii. 369-370 

near Huelo, Maui...................... 200-204

near Kukuihaele, 'Hawaii.............. 370-371
INDEX. 391

North Waiehu Stream near Wailuku, Maui. 135-136 

No. 1 Stream near Hilo, Hawaii............. 381

Nuuanu Stream at Honolulu, Oahu... .. 111-113 

Nuuahu Stream basin (Oahu), measurements

in............................. 111-116

Nuuanu Valley, near Honolulu, Oahu,

Luakaha weir in............... 115-116

Lulumaho ditch in.................... 113-114

O. 

Oahu, artesian wells on.................... 128-129

gaging stations on....................... 26-27

miscellaneous measurements on......... 128

precipitation on......................... 384

Office methods of computing stream flow.... 13-22

Old Hamakua ditch at Opana weir, near

Huelo, Maui................... 204-205

Old Waikalua ditch at Kaneohe, Oahu...... 128

Olawalu, Maui, Olowalu ditch No. 1, near.. 147-149 

Ukumehame Stream near............. 146-147

Olokele ditch near Makaweli, Kauai......... 50-52

near Waimea, Kauai.................... 52-C3

Olowalu ditch No. 1, near Olowalu, Maui.. 147-140 

Olowalu Stream basin (Maui), measurements

in............................. 147-143

Omuu Stream at Koloa, Kauai.............. 98

Onomea Stream near Papaikou, Hawaii.....' 3G1

Oopuola Stream near Huelo, Maui......... 171-172

Opana ditch near Huelo, Maui............ 196-197

Opana Stream near Huelo, Maui............ 196

Opana weir, near Huelo, Maui, Lowrie ditch

at............................... 207

Old Hamakua ditch at................ 204-205

r.

Palolo(Everett) ditch near Waikapu, Maui. 144-146 

Palolo Stream basin (Oahu), measurements

in............................. 100-105

Papaa Stream at Kilauea, Kauai............ 93

Papaikou, Hawaii, Hanawai Stream near.... 3S1

' Onomea Stream near.................... 381

Pauoa Stream below Kahuawai Spring, near

Honolulu, Oahu................. 109

Pauoa Valley, Oahu, Kahuawai Spring in... 128 

Peahi weir, near Huelo, Maui, Haiku ditch at. 208 

Pepeekeo, Hawaii, Kapeha Stream near..... 381

Kawainui River at.................... 215-216

Pepeekeo Stream near................... 381

Waiaama Stream near................... 381

Pierce, C. H., work of....................... 25

Piihonua, near Hilo, Hawaii, stations at... 216-218 

Poakumu Stream at Kilauea, Kauai. ., ..... 98

Poeloelo Stream at Koloa, Kauai............ 98

Pohakea Stream near Waimanalo, Oahu... 122-123 

Pohakunanaka R iver near Hilo, Hawaii..... 381

Ponolu, Hawaii, Linoli Springs near......... 381

Poowaiomahaihai ditch near Waimea, Kauai 53-54 

Precipitation, records of................... 383-385

Puhi Stream near Lihue, Kauai............. 98

Pukele Stream, near Honolulu, Oahu, Waiomao Stream above........... 102-104

Pukele Stream at or near Mahoe Springs, near

Honolulu, Oahu........... 104-105,128

PuMhae Stream near Hilo, Hawaii.......... 381

Puohakamoa Stream near Huelo, Maui.... 166-167

Puuomalei, near Hamakuapoko, Maui, Kaluanui ditch at.................. 205-206

R.

Rain gaging in Hawaiian Islands.......... 381-385

Run-off, deflnitionof........................ 17

field methods of measuring.............. 11-16

office methods of computing............. 19-22

terms used in expressing................. 16

S.

Scope of investigations...................... 10-11

Second-foot, definition of.................... 16-17

South Waiehu ditch near Wailuku, Maui.... 162

South Waiehu Stream near Wailuku,

Maui.......................... 136-137

Spreekels ditch (West Maui) near Waihee,

Maui.......................... 134-13*

Spreekels ditch (East Maui) near Huelo,

Maui.......................... 172-186

Spreekels ditch region (East Maui), measurements in...................... 164-186

Stations, records at, on Hawaii Island..... 212-381

records at, on Kauai Island............. 34-100

on Maui Island.................... 129-211

on Oahu Island.................... 100-129

Btewart, J. B., work of...................... 25

Stone Dam ditch, near Kilauea, Ilauai, seepaseandlossfrom................ 99

Stream measurement, accuracy of........... 24

field methods of......................... 11-16

office methods of computing............. 10-22

T.

Tables, explanation of....................... 22-24

Terms, definitions of........................ 16-17

U.

Uhau lole Stream, below falls, Kauai........ 98

near Lihue, Kauai...................... 73-74

Ukumehame Stream basin (Maui), measurements in...................... 146-147

Ukumehame Stream near Olowalu, Maui.. 146-147 

Upper Waiahole Valley, Oahu, Halona

Stream in....................... 128

Halona Stream (North Fork) in......... 128

Uwau Stream in......................... 128

Wahi Streamin........................ 1-S

Waianu Stream in....................... 128

Uwau Stream in Upper Waiahole Valley,

Oahu............................ 128

V.

Velocity-area measurements, methods of

making.......................... 12-16

W.

Wahiaua Stream at Eleele, Kauai........... 68

Waiaama Stream near Pepeekeo, Hawaii.... 381

Waiahole Stream at Manianiaula, near Waikane, Oahu.................... 117-119

at Waiahole, near Waikane, Oahu..... 119-121

Waiahole Stream basin (Oahu), measurements in....................... 116-127
392 INDEX.

Page. 

Waiahole Valley,' Oalm, McCandless ditch,

in............................... 128

See also Upper Waiahole Valley. 

Waiakoali Stream near Waimea, Kauai_... 37-38 

Waialae road, near Honolulu, Oahu, Manoa

Stream at..................... 108-109

Waialae Stream near Waimea, Kauai........ 39-40

Waianu Stream in Upper Waiahole Valley,

Oahu............................ 128

Waiehu Tails, near Lihue, Kauai, Wailua

River (South Fork) above....... 66- 8

Waiehu Stream basin (Maui), measurements

in............................. 135-137

See also North Waiehu Stream; South

Waiehu Stream. 

Waihee, Maui, Kahakuloa Stream near.... 129-130

Spreckels ditch (West Maui) near..... 134-135

Waihee canal near..................... 132-133

Waihee Stream........................ 130-132

Waihee canal near Wailuku, Maui......... 134-135

Waihee Stream basin (Maui), measurements

in............................. 130-135

Waihi Stream in Upper Waiahole Valley,

Oahu............................ 128

Waihina canal, Eauai, seepage and loss from. 99 

Waihohonu Stream, at Eoloa, Kauai......... 98

Waikalua ditch at Ah Lo flume, Eaneohe,

Oahu............................ 128

at Kaneohe, Oahu....................... 128

See also Old Waikalua ditch. 

Waikamoi Stream near Huelo, Maui....... 169-171

Waikane, Oahu, Waikane Stream near.... 116-117

Waiahole Stream near (at Manianiaula) 117-119 

(at Waiahole)..................... 119-121

Waikane Stream basin (Oahu), measurements in....................... 116-117

Waikane Stream near Waikane, Oahu..... 116-117

Waikapu, Maui, Palolo (Everett) ditch

near........................... 144-146

South Side Waikapu ditch near....... 142-144

Waikapu Stream near................. 141-142

Waikapu Stream basin (Maui), measurements in....................... 141-146

Wailua River (North Fork) above mouth of

East Branch..................... 98

near Lihue, Kauai....................... 71-73

Wailua River (North Fork, East Branch of)

near Lihue, Kauai............... 74

Wailua River (South Fork) above Waiehu

Falls, near Lihue, Kauai........ 66-68

Wailua River basin (Kauai), measurements

in............................... 66-C7

Wailuku, Maui, lao Stream near........... 137-1C9

Kahakuloa Stream near................. 162

Maniania ditch near................... 139-140

North Waiehu Stream near............ 135-136

South Waiehu ditch near................ 1C2

Wailuku, Maui, South Waiehu Stream near 136-137 

Waihee canal near..................... 134-135

Wailuku River near Hilo, Hawaii......... 212-213

Hilo Electric Light Co. weir at.......... 381

Waimanalo, Oahu, Kahanaiki Stream near.. 121 

Kailua Streamnear_................... 122

Kaimi Stream near...................... 124

Kamakalepo Streamnear................ 123

Makawao ditch near..................... 125

Makawao Stream near................. 124-125

Pohakea Stream near.................. 122-123

, pump ditch near....................... 127-128

Waimanalo ditch near.................. 123-127

Wong Leong ditch near................ 125-126

Waimanu, Hawaii, Waimanu Stream near.. 381

Waimea, Kauai, Halehaku Stream (North

Fork) at......................... 98

Halekua Stream near.................... 50

Kamenehue ditch near.................. 47-48

Kauaikanana Stream near............... 98

Kawatkoi Stream near................... 35-37

Kekaha ditch near....................... 40-45

Makaweli River near.................... 48-50

Mohihi Stream near..................... 38-39

Olokele ditch near....................... 52-53

Poowaiomahaihai ditch near............. 53-54

Waiakoali Stream near.................. 37-38

Waialae Streamnear.................... 38-39

Waimea ditch near...................... 45-47

Waimea River at or near............. 34-35,98

Waimea River basin (Kauai), measurements

in............................... 34-48

Wainamuamu weir, near Kapaa, Kauai, 

Kaehulua Stream (South Fork) 

at............................... 81-82

Wainiha, Kauai, Lumahai River near...... 95

Wainiha canal near...................... 97-98

Wainiha River near.....:............... 95-97

Waiomao Stream above Pukele Stream,

near Honolulu, Oahu.......... 102-104

near Honolulu, Oahu.................. 100-102

Waipio, Hawaii, Kawainui River near..... 367-368

New Hamakua ditch near............. 369-370

Waipio River near (below Koiawe)...... 368

(below Waima)...................... 369

Waiuli ditch at Kilauea, Kauai.............. 98

near Kilauea, Kauai, seepage and loss

from............................. 99

Weir measurements, advantages and disadvantages of...................... 11-12

West Maui, miscellaneous measurements on. 162

White, G. Rework of....................... 25

Wilcox ditch near Koloa, Kauai....... 98

Wong Leong ditch, Kailua Valley, Oahu,

Kailu Streamnear............... 128

Wong Leong ditch near Waimanalo, Oahu. 125-126

Wood, B. D., work of....................... 25

AYork, division of............................ 24-25

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