Honolulu star-bulletin. [volume] (Honolulu [Oahu, Hawaii]) 1912-2010, 1913-10-23
Superintendent or HYDROGRAPHY
MAKES REPORT TO THE BOARD

L /. = { = J.
Extract from September report 81
superintendent 81 photography to the
board OF agriculture and forestry
Data received from al islands, ex.
|cept Hawaii by the hydrography divi.
|sion OF the board Of agriculture and
forestry show practically all streams
to have the lowest discharge record.
ed since the Inauguration Of the hy.
topographic work. On Oahu the city
watch supply has reached low point
that will necessitate further restric-
tons in the use OF water unless con-
siderable rainfall occurs within the
next few days. ALI streams on Oahu
are at minimum discharges exeept In
the case of the Waiahole stream. the
discharge OF which has been steadily
Increased BY the underground water
induced by the Waiahole tunnel. The
north and south branches OF the Kau-
konahua which supply Schofeld Bar
racks and the Wahiawa Water Com
pany's reservoir respectively have
dropped below all known or estimated
records. A measurement OF the south
fork on September Path showed dis
charge OF bnt "a Of million gallons
per day while on October / the north
fork discharge totaled SO million gal
Ions per day.
On Maui the bitches Of both East
and West Maui are below ali known
records, while on Kauai the same
condition occurs In q lesser percent
sge Of bitches. Insufficient rainfall
data has been received to make
comparison OF the rainfall and run-off
at this time.
Methods Of Investigation.
There are two methods or plans ofl
procedure under which the hydro
graphic investigation of this territory
may be carried forward with the
funds available One method consists
In covering large amount of terri
tory with q meager or limited amount
Of work and equipment The second
method Is to concentrate equiDment
and operations at those localities ii
which the work seems most immedi-l
ately needed and, a. soon as the ne
cessary equipment has been estab-
|isned and the investigation put in as !
nearly q self operating basis as DOS
sible, then to take up the work at 9th. |
or localities in the order Of It's Inn |
portance in relation to the utilization
operation and development Of water
usage
Previous to- August. 1912, the first
named method was adopted By the
ID charge Of this work An
snort was made 10 obtain at lesst
little fnforma ion 6f "a genera Ea-
lure to al perennial sire ans, dilchss.
plants, rainfall, ETC., on the.
stands b auai, Oahu, Maui and Ha-
vaii. Consls iug the limited funds
available, q rem liable amount OF
iata. of general b. We was collect.
d and has been publb. S>in Water
supply Paper No. 31S ofN&
Geological Survey. While the 1ta
published furnishes 4 consideraD,
amount OF general Information rela-s
I've to the water supply Of the terri
DRY, It does not 60 far enough to be
y high engineering and economic
1alue to those interested In the actu-
i utilization Of the sources Of supply
4 irrigation, power and other hy-
lraulic projects.
The economic utilization of Ha-
waits natural water supply Is one Of
he most important factors in the az.
1culture Of the territory, and one
which calls for intense methods Of In
Testigation ins.ead Of the superficial
+ general methods adopted III the
'ast The Investigations Of every pc
enni;l stream, spring or other source
{ water supply should include the
GLOWING:
l. At least Is years continuous !,
auge height records. These records
hould be obtained by automatic regis
ers which give continuous record
nd which cannot make mistake or
alsify records as is frequently the
ase In man-read and recorded gauge
eiahts
2. Sufficient measurements BY weir