Variations in Low-Water 

Streambed Elevations at 

Selected Stream-Gaging Stations 

in Northwestern California

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1879-E

Prepared in cooperation with 

the California Department of 

Water Resources
Variations in Low-Water 

Streambed Elevations at 

Selected Stream-Gaging Stations 

in Northwestern California

By JOHN J. HICKEY

CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES

GEOLOGICAL SURVEY WATER-SUPPLY PAPER 1879-E

Prepared in cooperation with 

the California Department of 

Water Resources

^1. _i. U. S.

, t7j.R RESOURCES DIVISiROLLA, MO.

RECEIVED

OCT241969

AM PM

7.8.9.10illil2ili2|3|4|5|6

UNITED STATES GOVERNMENT PRINTING OFFICE, WASHINGTON : 1969
UNITED STATES DEPARTMENT OF THE INTERIOR 

WALTER J. HICKEL, Secretary

GEOLOGICAL SURVEY 

William T. Pecora, Director

For sale by the Superintendent of Documents, U.S. Government Printing Office 

Washington, D.C. 20402 - Price 60 cents (paper cover)
CONTENTS

Page

Abstract_______________._..________.____________ El

Introduction. _____________________________________________________ 1

Purpose and scope_________________________________________ 1

Acknowledgments. ____________________________________________ 2

Calculation of low-water streambed elevations_______________________ 2

Long-term and short-term records_______________________________ 3

Variations in low-water streambed elevations______________________ 3

Graphs of yearly streambed elevations_______________________________ 7

Comparative cross sections________--________________________-_____- 30

ILLUSTRATION

PLATE 1. Map showing location of selected stream-gaging stations in 

northwestern California that have a record of low-water 

streambed variations_______________________________ In pocket

TABLE

TABLE 1. Summary of changes in streambed elevation at selected gaging

stations in northwestern California______________________ E5

m

CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES

VARIATIONS IN LOW-WATER STREAMBED ELEVATIONS

AT SELECTED STREAM-GAGING STATIONS IN

NORTHWESTERN CALIFORNIA

By JOHN J. HICKEY

ABSTRACT

Graphs and a table are presented showing the variations in streambed elevations that have occurred over the years in the low-water channels at selected 

gaging stations in northwestern California. The streambed elevations are calculated from data obtained during discharge measurements. The greatest elevation changes that were recorded occurred between the 1964 and 1965 low-water 

periods. Those streambed changes are related to the flood of December 1964 and 

probably reflect large quantities of sediment placed in the streams from bank 

erosion and landslides. At 25 of 51 stations with data for that period, elevation 

changes exceeded 1 foot, and at 42 stations the changes represented fill, rather 

than scour.

INTRODUCTION

PURPOSE AND SCOPE

Streambeds commonly tend toward a stable condition by adjusting 

to the discharge and to the character and quantity of sediment supplied. However, major deviations from this stable condition may occur 

during a stream's history because of floods of large magnitude. This 

was dramatically illustrated in northwestern California by the major 

streambed alterations associated with the flood of December 1964, in 

which vast quantities of sediment entered the channels and caused a 

general rise in streambed elevations.

Knowledge of how much these elevations exceeded the prior streambed elevations is very important for the design of hydraulic structures. 

This is especially true for the design of bridge footings and of invert 

elevations for river inflow and outflow conduits.

In California, very little, if any, work has been done to determine 

and to compile the available streambed data. This report fills that 

need, in part, by compiling the historical low-water streambed elevaBl
E2 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES

tions at selected stream-gaging stations in the northwestern drainage 

basins of the State.

The low-water streambed elevations in this report are the mean 

elevations of the low-flow channels. This particular value was used 

because it is a good index from which to view the long-term effects of 

channel fill and scour. Also, this value may be the most significant for 

the design of river structures.

The part of northwestern California investigated is shown on plate 

1 and is approximately between lats 39° 15' and 42°00/ N., and 

between longs 120° 15' and 124° 10' W. The area is drained principally 

by the Eel, Mad, Klamath, and Smith Rivers and Redwood Creek. 

Smaller streams, such as the Elk and Little Rivers and Jacoby Creek, 

drain the slopes immediately adjacent to the coast. Bed material for 

most of the streams is gravel (1-100 mm), and the most common particle size is in the pebble range (4-64 mm). The surface-water hydrology of this region was discussed by Rantz (1964) .*

ACKNOWLEDGMENTS

This study was made under the terms of a cooperative agreement 

between the U.S. Geological Survey and the California Department 

of Water Resources. The report was prepared under the general supervision of R. Stanley Lord, California district chief for the Water Resources Division of the U.S. Geological Survey, and under the 

immediate supervision of L. E. Young, chief of the Menlo Park subdistrict office. J. Ned Dempsey assisted in the calculation and preparation of the data.

CALCULATION OF LOW-WATER STREAMBED 

ELEVATIONS

The streambed elevations in this report were calculated from discharge measurements obtained during low-flow periods in the vicinity 

of the selected gaging stations (pi. 1). The average depth of water 

was subtracted from the gage height of the water surface to give the 

average streambed elevation with reference to gage datum. Because 

the data were collected during low-flow periods, the calculated 

streambed elevations were those of the low-water channels. Two or 

more streambed elevations for each year were averaged to obtain a 

mean yearly value. That value was used to illustrate the year-to-year 

changes in streambed elevation at each gaging station ("Graphs of 

Yearly Streambed Elevations," p. E7-E29).

1 Rantz, S. E., 1964, Surface-water hydrology of the coastal basin of northern California: 

U.S. Qeol. Survey Water Supply Paper 1758, 77 p.
LOW-WATER STKEAMBED ELEVATIONS, NW. CALIFORNIA E3

Eighty-six of the calculated streambed elevations were compared 

with measurements of the lowest elevation at gaging-station control 

sections. Seventy-seven of the calculated elevations were within ±0.50 

foot of the control-section elevations, and 84 were within 0.50 to 

+ 0.70 foot. These comparisons indicated that the data and method 

yielded a representative index of the actual channel elevation.

Because the measurement error of each calculated elevation is unknown, the determination of significant streambed changes is hindered. However, the above comparisons suggest that a 1-foot difference 

between yearly average elevations is a valid indication of change. For 

that reason, a change of more than 1 foot between yearly elevations 

is considered to be indicative of significant natural streambed 

modifications.

LONG-TERM AND SHORT-TERM RECORDS

The streamflow records from the selected gaging stations are categorized in this study as long-term and short-term records. Long-term 

records are those that exceed 5 years in length and generally include 

September 1965. Short-term records are those that are less than or 

equal to 5 years in length, and include both September 1964 and September 1965. Graphs showing the variations in low-water streambed 

elevations for the long-term records are shown on pages E7-E29. The 

short-term records were not plotted as graphs but were incorporated 

into the study because of the major streambed changes that occurred 

between September 1964 and September 1965.

The gaging station sites chosen were those not affected significantly 

by streamflow regulation or by manmade stabilizing influences, such 

as concrete gaging-station control sections. Of the 70 gaging stations 

operating in the report area in September 1965, 54 were selected; and 

46 of these have long-term records and eight have short-term records. 

The 54 stations are shown on plate 1 and are identified in table 1 by 

name and number. The pages on which the long-term records are 

plotted are also shown in table 1. Of the 46 long-term records, 43 have 

data for both September 1964 and 1965. So, 51 out of the 54 stations 

Shown on plate 1 have data for the 1964 and 1965 low-water periods.

VARIATIONS IN LOW-WATER STREAMBED 

ELEVATIONS

Streambed fill and scour are continuous processes that have their 

most pronounced effect during periods of high-water discharge. In 

northwestern California, high-water discharges are seasonal and occur 

primarily between the months of November and June. The period of
E4 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES

low-water discharge, or base flow, occurs between July and October, 

and during this period streambeds undergo very little change. Each 

yearly low water streambed elevation calculated for this study, therefore, represents the net effect of the fill and scour that occurred at the 

gage site during the previous high-water period.

The elevation changes recorded in this report, ranging from negligible to 13 feet, establish a frame of reference from which the magnitude of design problems dependent upon streambed change can be 

viewed. It is not possible to interpolate or extrapolate magnitudes of 

expected change directly. However, selection of gaging-station sites 

were geologic and hydrologic conditions are comparable to those at 

a proposed construction site should permit determination of a range 

of elevation changes that might be expected at the construction site.

The greatest recorded changes in streambed elevations generally 

occurred between the low-water periods of 1964 and 1965 and were 

related to the floods of December 1964. At 25 of the 51 stations that 

have records covering this period, the elevation change exceeded 1 

foot, and at all but nine of 51 stations the change represented fill. Most 

of the fill material probably entered the streams from bank erosion 

and landslides associated with the flood. At several sites, particularly 

in the vicinity of gaging stations 11-4729 and 11-4730 in the Eel Eiver 

basin and 11-5290 in the Klamath Eiver basin, fill continued during 

the high-water period of November 1965 to June 1966. The gravel fill 

material probably was, in part, derived from continued bank erosion 

and landslides during the 1965-66 high-water period and, in part, from 

material that was brought into the upstream reaches of the affected 

streams during the flood of December 1964 and later transported 

downstream to the gage sites by the 1965-66 high water. The 1964-65 

changes in low-water streambed elevations are tabulated in table 1, and 

are shown on plate 1. Comparative cross sections for some of the stations with the greatest 1964-65 changes are shown on pages E30-E33. 

The pages on which these cross sections are plotted are given in table 1.

At some of the stations the streambed elevations were altered over 

the years in response to manmade as well as natural causes. The principal manmade causes were the addition of sediment as a result of highway construction along the stream and the removal of sediment for 

channel improvement or for commercial sand and gravel supplies. The 

effect of these manmade influences is clearly evident in the graphs for 

gaging stations 11-4725, 11-4765, and 11-4766 in the Eel Eiver basin 

(p. E7, E12, E13), 11-4810 in the Mad Eiver basin, and (p. E16), and 

11-5178, 11-5223, and 11-5265 in the Klamath Eiver basin 

(p. E19, E21, E25).
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E5

In the area studied, most of the observed changes were positive 

that is, the streambeds filled. It has to be expected that a long-term, 

decrease in streambed elevation will probably occur in the future, 

provided that the banks and landslopes stabilize. Any design for structures built in the stream channels will have to take this future reduction in streambed elevations into account.

TABLE 1. Summary of changes in streambed elevation at selected gaging stations in

northwestern California

[Symbol (a) in first column indicates short-term record; all others are long term. Minus sign in third column 

indicates scour; all other differences are fill. Dash leaders in third column indicate no data available 

for 1965]

Gagine-station Page in this report

No. Name

Difference 

between 

1964 and -

1965 Graph of Graph of 

low-water yearly comparastreambed streambed tive cross 

elevation elevations sections

(feet)

Eel River basin

(a) 11-4718 -

W(a)

(a)

(a)

4722.....

4725.....

4729 

4730 

4731-.-

4735.3.-

4736 ..

4737 -

4738 

4740 

4745 

4750 

4755 -

4757 

4765 ..

4766 

4767 

4770 

4775 

4777 

4785

... Tomki Creek near Willits ......................

.. . Outlet Creek near Longvale __ 

... Eel River above Dos Rios - .. .

... Black Butte River near Covelo... - .

... Middle Fork Eel River below Black Butte

River, near Covelo.

... Williams Creek near Covelo. .. ... . . _ .

... Mill Creek below Alder Creek, near Covelo ....

... Short Creek near Covelo .......... _ . . _. 

... Mill Creek near Covelo _ ................... ...

... Elk Creek near Hearst ....... _ ............

... Eel River below Dos Rios . ...-...... .....

 . North Fork Eel River nearMina.. ...... ......

... Eel River at Alderpoint __ .. _ . _ . _ ......... _ .

... South Fork Eel River near Branscomb __

... Tenmile Creek near Laytonville . _ . _ .......

... South Fork Eel River near Miranda.. _ ... ... .

... Bull Creek near Weott.. ... ...............

... Larabee Creek near Holmes.

... Eel River at Scotia __ . _ .. . _ ..... __ ... .. ..

_ Van Duzea River neir Dins-nores _ . _____

... South Fork Van Duzen River near Bridgeville..

... Van Duzen River near Bridgeville _ .._ .

0.8

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E13

E14

E14

E15

E30

E30

E31

E31

Elk River basin

(a) 11-4797......... Elk River near Falk. 0.7 E15

Mad River basin

11-4805. 

4810.

Mad River near Forest Glen. 

Mad River near Arcata......

0.2 -2.8 E16 

E16

Little River basin

11-4812......... Little River at Crannel. 0.2 E17

Redwood Creek basin

11-4826......... Bedwook Creek at Orick.

348-307 0 69 2

0.3 E17
E6 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES

TABLE 1. Summary of changes in streambed elevation at selected gaging stations in 

northwestern California Continued

No.

D

t 

Gaging-station 1!

lo 

Name st

el

iflerence 

letween Page in this report HWand 

1965 Graph of Graph of 

w-water yearly comparareambed streambed tive cross 

levation elevations sections 

(feet)

Klamath Rtrer baain

11-4896... ...

(a)5166 

5169......

5175......

5178......

(a)5lRO. 5....

(a)5186 

5195 

5205 

5215 

5223 -

5225......

5230 

5232... ...

5237 

5258 

5269 -

5265. 

6270 

5274 

5281 

5284 

5285 

5290 

5298 

_ Antelope Creek near Tennant _________

_ East Fork Scott River at Callahan....... _ ....

Center.

... Willow Creek near Willow Creek.... .... .... .

0.1 

.6

~.~2 

-1.1

.4 

0 -.1 

.1 

3.1

2.5

3.0 -.3

1.4 -.3 

-.1 

.8 

.6 

4.0

2.2 

.3 

.6 

12.9 

13.0

E18

E18 

E19 

E19

E20 

E20 

E21

E21 

E22 

E22 

E23

E23 

E24 

E24 

E25 

E25 

E26

E26 

E27 

E27 

E28 

E28

E32

E32 

E33

Smlth River burin

11-5310 

6325

1.5 

 3

E29 

E29

E33
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E7 

GRAPHS OF YEARLY STREAMBED ELEVATIONS 

EEL RIVER BASIN

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

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Gaging-station number: 11 4722.

Gaging-station name: Outlet Creek near Longvale, Calif. 

Elevation of gaging-station datum, in feet, above msl: 1,020. 

Notable flood peaks: 26,500 cf s Feb. 8,1960; 77,900 cf s Dec. 22,1964.

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Gaging-station number: 11 4725.

Gaging-station name: Eel River above Dos Rios, Calif.

Elevation of gaging-station datum, in feet, above msl: 950.

Notable flood peaks: 123,000 cf s Dec. 22, 1955; 184,000 cf s Dec. 22, 1964.

Remarks: During 1960, sediment placed in channel above and below gage site 

by road construction along right bank. Gage discontinued 

September 1965.
E8 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

EEL RIVER BASIN Continued

LOW-WATER STREAMBED ELEVATION, 1 

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

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Gaging-station number: 11-4729.

Gaging-station name: Black Butte River near Covelo, Calif. 

Elevation of gaging-station datum, in feet, above msl: 1,450. 

Notable flood peaks: 29,000 cfs Dec. 22,1964.

Remarks: Prior to Dec. 22, 1964, water-stage recorder at site 0.1 mile 

upstream at same datum.

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Gaging-station number: 11-4730.

Gaging-station name: Middle Fork Eel River below Black Butte River, near

Covelo, Oalif.

Elevation of gaging-station datum, in feet, above msl: 1,43433. 

Notable flood peaks: 89,100 cfs Dec. 21, 1955; 133,000 cfs Dec. 22, 1964.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E9 

EEL RIVER BASIN Continued

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<Jaging-sitation number: 11-4736. 

Gaging-station name: Short Creek near Covelo, Oalif. 

Elevation of gaging-station datum, in feet, above msl: 1,480. 

Notable flood peakg: 3,600 cfs Dec. 22,1964.

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Gaging-station number: 11-4737.

Gaging-station name: Mill Creek near Covelo, Calif.

Elevation of gaging-station datum, in feet, above msl: 1,280.

Notable flood peaks: 10,000 cfs Feb. 8, 1960; 24,100 cfs Dec. 22, 1964.
E10 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

EEL RIVER BASIN Continued

LOW- ELEVATION, STREAMBED 1WATER

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Gaging-station number: 11-4740.

Gaging-station name: Eel River below Dos Rlos, Oalif.

Elevation of gaging-station datum, in feet, above msl: 800.

Notable flood peaks: 283,000 cfs Dec. 22, 1955; 460,000 cfs Dec. 22, 1964.

Remarks: Discontinued September 1966..

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

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Gaging-station number: 11-4745.

Gaging-station name: North Fork Eel River near Mina, Oalif.

Elevation of gaging-station datum, in feet, above msl: 1,005.

Notable flood peaks: 58,400 cfs Dec. 22, 1955; 133,000 cfs Dec. 22, 1964.

Remarks: On July 8, 1965, the gaging station was moved 0.4 mile downstream.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA Ell 

EEL RIVER BASIN Continued

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

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Gaging-station number: 11-4750.

Gaging-station name: Eel River at Alderpoint, Calif.

Elevation of gaging-station datum, in feet, above msl: 266.68.

Notable flood peaks: 376,000 cfs Dec. 22, 1955; 561,000 cfs Dec. 22, 1964.

Remarks: Discontinued September 1965.

LOW-WATER STREAMBED ELEVATION, 1 

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Gaging-station number: 11-4755.

Gaging-station name: South Fork Eel River near Branseomb, Calif.

Elevation of gaging-station datum, in feet, above msl: 1,380.

Notable flood peaks: 20,100 cfs Dec. 22, 1955; 19,700 cfs Dec. 22, 1964.
E12 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

EEL RIVER BASIN Continued

STREAMBED .OW-WATER ELEVATION, 1 

EET, ABOVE ORBELOW(-) GAGE DTU

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197

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Gaging-station numiber: 11-4757.

Gaging-station name: Tenmile Creek near Laytonville, Calif.

Elevation of gaging-station datum, in feet, above msl: 1,450.

Notable flood peaks: 14,500 cfs Dec. 22,1964.

Gaging-station number: 11-4765.

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

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Gaging-station number: 11-4765.

Gaging-station name: South Fork Eel River near Miranda, Calif. 

Elevation of gaging-station datum, in feet, above msl: 217.57. 

Notable flood peaks: 73,200 cf s Dec. 27, 1945; 173,000 cf s Dec. 22, 1955; 

199,000 cfs Dec. 22,1964.

Remarks: During 1962, a bridge was constructed downstream from gage site.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E13 

EEL RIVER BASIN Continued

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Gaging-station number: 11-^1766. 

Gaging-station name: Bull Creek near Weott, Calif. 

Elevation of gaging-station datum, in feet, above msl: 269.36. 

Notable flood peaks: 6,520 cfs Dec. 22, 1964.

Remarks: Streambed in the vicinity of the gage is periodically cleaned and 

realigned. After August 11, 1965, gaging station is 150 feet 

upstream at a 8.90 feet lower datum.

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Gaging-station number: 11-^1767.

Gaging-station name: Larabee Creek near Holmes, Calif. 

Elevation of gaging-station datum, in feet, above msl: 145.53. 

Notable flood peaks: 11,400 cfs Dec. 22, 1964.

Remarks: Discontinued September 1965.

348-307 O 69 3
E14 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

EEL RIVER BASIN Continued

ELEVATION, LOW-WATER STREAMBED 1

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10 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197 

YEARS

Gaging-station number: 11-4770. 

Gaging-station name: Bel River at Scotia, Calif. 

Elevation of gaging-station datum, in feet, above msl: 35.50. 

Notable flood peaks: 345,000 cfs Dec. 11, 1937; 541,000 cfs Dec. 22, 1955; 

752,000 cfs Dec. 23,1964.

Remarks: During 1916 and again in 1940, a bridge was constructed at gage 

site.

STREAMBED LOW-WATER ELEVATION, 1 

ABOVE OREET, BELOW(-) GAGE DATL

1 rs 

c o en01. 

O =>C

:

:

:

:

~i i i i

i i 1 1

i i M

i i M

i i 1 1

i 1 1 i

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1 1 1 1

1 1 1 1

1 1 1 1

1 1 1 1

1 1 1 1

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1 1 1 1

i 1 1 1

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1 1 1 1

°0

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1 1 1 1

>o°o°

1 1 1 1

1 1 1 l_

~-

'-_

o _

1 1 1 f

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-4777.

Gaging-station name: South Fork Van Duzen River near Bridgeville, Calif. 

Elevation of gaging-station datum, in feet, above msl: 2,283.02. 

Notable flood peaks: 13,600 cfs Dec. 22,1964.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E15 

EEL RIVER BASIN Continued

LOW-WATER STREAMBED ELEVATION, 1 

EET, ABOVE ORBELOW(-) GAGE DTL

r,

71 Ol C

3 OC

_l 1 M

;

2

2

~M M

1 1 1

1 1 1

MM

III!

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 1 1

1 1 1 1

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1 1 1 1

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1 1 1 1

1 1 1

00 0 °

1 1 1 1

~

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-_

-

i i i r

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197

YEARS

Gaging-station number: 11-4785.

Gaging-station name: Van Duzen River near Bridgeville, Calif.

Elevation of gaging-station datum, in feet, above msl: 400.

Notable flood peaks: 43,500 cfs Dec. 22,1955 ; 48,700 cfs Dec. 22,1964.

Remarks: After October 1965, the gaging station is 2.4 miles downstream.

ELK RIVER BASIN

STREAMBED .OW-WATER ELEVATION, 1 

EET, ABOVE BELOW(-) GAGE DTU OR

NN- C Oln 

3 C0

J 1 i

:

:

:

"MM

i i I

1 M 1

1 M 1

I 1 1 1

MM

i i i i

1 1 1

i i i i

1 1 1

i i i i

1 1 1

i i i i

1 1

i i i i

I 1 1

i i i i

1 1 1

OOQ <

1 1 M

MM

|O OO°

MM

M 1

=

\

> 

MM"

"" "l910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197

YEARS

Gaging-station number: 11-4797. 

Gaging-station name: Elk River near Falk, Calif. 

Elevation of gaging-station datum, in feet, above msl: 29.61. 

Notable flood peaks: 3,430 cfs Dec. 22, 1964.
El6 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES

MAD RIVER BASIN

Srs 20.0

15.0

!i 10.0

5.0

:o 0.0

\a -5.0

MM MM

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-4805. °

Gaging-station name: Mad River near Forest Glen, Calif. 

Elevation of gaging-station datum, in feet, above msl: 2,408.18. 

Notable flood peaks : 39,200 cf s Dec. 22,1955 ; 20,100 cf s Dec. 22,1964.

15.0 

10.0 

5.0 

0.0 

-5.0 

Jill

i

:

:

"l M 1

1 1 1 1

MM

1 II 1

MM

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i 1_L 1

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197 

YEARS

Gaging-station number: 11-4810.

Gaging-station name: Mad River near Arcata, Calif.

Elevation of gaging-station datum, in feet, above msl: 12.79.

Notable flood peaks: 77,800 cf s Dec. 22,1955; 70,400 cfs Dec. 23,1964.

Remarks: The 1965 low-water streambed elevation is adjusted to the 5.00 

feet higher datum in existence prior to April 9, 1965. During 

1956, 1960, and 1965, sediment was removed from the channel.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E17 

LITTLE RIVER BASIN

^p 20.0

15.0

10.0

5.0

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-5.0

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-4812. 

Gaging-station name: Little River at Crannell, Calif. 

Elevation of gaging-station. datum, in feet, above msl: 17.62. 

Notable flood peaks: 6,380 cfs Dec. 22,1955; 6,800 cfs Mar. 11,1957; 8,240 

cfs Dec. 22, 1964.

REDWOOD CREEK BASIN

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10.0 

5.0 

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2

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197

YEARS

Gaging-station number: 11-4825.

Gaging-station name: Redwood Creek at Oriek, Calif. 

Elevation of gaging-station datum, in feet, above msl: 5.16. 

Notable flood peaks : 50,000 cfs Jan. 18,1953; 50,000 cfs Dec. 22,1955; 50,500 

cfs Dec. 22, 1964.

Remarks: Sand and gravel removed above and below gage site from 1959 

to present.
E18 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

KLAMATH RIVER BASIN

2°

> < ta S IR n I0-u

Ujg

LU ^v

o ' mn

1§ 

{£ 5.0

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,

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-4895.

Gaging-station name: Antelope Creek near Teanant, Calif. 

Elevation of gaging-station datum, in feet above msl: 5,080. 

Notable flood peaks: 422 cf s Dec. 22,1955; 638 cf s Dec. 22,1964.

Remarks: A concrete channel-control section was constructed in September 

1965.

±=> 20.0

10.0

£ 5.0

:o 0.0

\H -5.0 I I I I I I I I | | | I I

°ooo

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5169.

'Gaging-station name : Little Shasta River near Montague, Calif. 

Elevation of gaging-station datum, in feet, above msl : 3,360. 

Notable flood peaks : 5,910 cf s Dec. 22, 1964.

Remarks: On May 27,1965, the gaging station was moved 0.25 mile upstream.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E19 

KLAMATH RIVER BASIN Continued

£p 20.0

15.0

10.0

5.0

:o 0.0

E -5.0

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5175.

Gaging-station name: Shasta River near Yreka, Oalif.

Elevation of gaging-station datum in feet, above msl: 2,000.

Notable flood peaks: 6,090 cf s Dec. 22, 1955; 21,500 cf s Dec. 22, 1964.

^? 20.0

Sea 15.0

!* 10.0

Ot uj fl

O

5.0

0.0

E -5.0

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5178.

Gaging-station name: Beaver Creek near Klamath, Calif. 

Elevation of gaging-station datum, in feet, above msl: 1,920. 

Notable flood peaks: 7,700 cfs Dec. 22,1964.

Remarks: During 1962, large boulders removed from channel below gaging 

station. Discontinued September 1965.
E20 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

KLAMATH RIVER BASIN Continued

STREAMBED LOW-WATER ELEVATION, 1

ABOVE EET, OR BELOW(-) GAGE DATL

-hC riotnO3 OC

:

:

"MM

i i i i

i i i i

i i i i

i i i i

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1 1 1 1

1 1 1 1

1 1 1 1

1 1 1 1

1 1 1 1

1 1 1 1

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1 1 1 1

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197

YEARS

Gaging-station number: 11-5195.

Gaging-station name: Scott River near Fort Jones, Calif.

Elevation of gaging-station datum, in feet, above msl: 2,625.80.

Notable flood peaks: 38,500 cf s Dec. 22, 1955; 54,600 cf s Dec. 22, 1964.

^= 20.0

<o 15.0

Si 10.0

5.0

:o 0.0

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5205.

Gaging-station name: Klamath River near Seiad Valley, Calif.

Elevation of gaging-station datum, in feet, above msl: 1,320.

Notable flood peaks: 122,000 cf s Dec. 22, 1955; 165,000 cf s Dec. 23, 1964.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E21 

KLAMATH RIVER BASIN Continued

LOW-WATER STREAMBEO ELEVATION, 1 

ABOVE FEET, OR BELOW(-) GAGE OATt

1 IN 

O CO1 (Jl 5o o c

_l 1 1 1

3

2

2

~\ 1 1 1

i i M

i i M

MM

MM

MM

MM

MM

MM

MM

II 1 1

MM

MM

MM

1 M 1

Mil

MM

MM

MM

MM

<

do OO

1 M 1

1 M l_

^

I

. ~~

M f f

10 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197 

YEARS

Gaging-station number. 11-5215.

Gaging-station name: Indian Creek near Happy Camp, Calif. 

Elevation of gaging-station datum, in feet, above msl: 1,300. 

Notable flood peaks: 23,000 cfs Dec. 21,1955; 39,000 cfs Dec. 22,1964.

LOW-WATER STREAMBED ELEVATION, IN 

OR EET, ABOVE BELOW(-) GAGE DATUM

1 M 

jt Otns o 

J 1 1 1

:

!

2

~l 1 1 1

1 1 1 1 1 1 1 1

MM

MM

1 1 1 1

1 1 1 1

MM

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MM

1 1 II

MM

MM

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1 1 1 1

°0»

MM

Mil

< 

0°

1 1 1 1

1 II l_

:

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~-

Mil"

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5223.

Gaging-station name: South Fork Salmon River near Forks Of Salmon,

Calif.

Elevation of gaging-station datum, in feet, above msl: 1,450. 

Notable flood peaks: 24,200 cfs Dec. 22, 1955; 31,400 cfs Dec. 22, 1964.

Remarks: During 1963, a bridge was constructed in the vicinity of the gaging 

station. Discontinued September 1965.
E22 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

KLAMATH RIVER BASIN Continued

£5 20.0

§2

P ui

<o 15.0 u,<

Ul .->

S^ 10.0 

Ig 5 -°

o; uj 

to 0.0

-Jfi -5.0

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Mil MM

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5225. 

Gaging-station name: Salmon River at Somesbar, Calif. 

Elevation of gaging-station datum, in feet, above msl: 482.97. 

Notable flood peaks: 49,000 cf s Feb. 1927; 84,000 cf s Dec. 22, 1955; 133,000 

cfs Dec. 22,1964.

Remarks: On July 30, 1965, the gaging station was moved 0.5 mile downstream.

Sp 20.0

10.0

">o

25^;

to 0.0 is 00

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5230.

Gaging-station name: Klamath River at Somesbar, Calif. 

Elevation of gaging-station-datum, in feet, above msl: 466.66. 

Notable flood peaks: 141,000 cfs Feb. 21, 1927; 202,000 cfs Dec. 22, 1955; 

307,000 cfs Dec. 22,1964.

Remarks: During 1935, hydraulic mining in drainage basin above gage.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E23 

KT.ATVTATH RIVER BASIN Continued

£ = 20.0

oa

t UJ

«

O

1

15.0

10.0

5.0

0.0

-" £ --5.0

o poo,

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5232.

Gaging-station name: Trinity River above Coffee Creek near Trinity Center,

Calif.

Elevation of gaging-statton datum, in feet, above msl: 2,533.36. 

Notable flood peaks: 11,400 cfs Dec. 22, 1955; 20,800 cfs Dec. 22, 1964.

go

t u1 <0

Ujg 

UJ ^

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< UJ ^m 

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iri i r ii i i T i i i i i i

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5287.

Gaging-station name: Coffee Creek near Trinity Center, Calif. 

Elevation of gaging-station datum, in feet, above msl: 2.750. 

Notable flood peaks: 17,700 cfs Dec. 22,1964.

Remarks: The low-water stream>bed elevations are measured from the datum 

in existence prior to April 30, 1965. On this date, the gaging 

station was moved 75 feet downstream to a 4.00 feet lower 

datum.
E24 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

KLAMATH RIVER BASIN Continued

LOW-WATER STREAMBED ELEVATION, 1 

EET, ABOVE ORBELOW(-) GAGE DATl

IS

n co 01 3 O C

JIM

1

-_

3

~l 1 1 1

MM

1 I 1 I

MM

MM

1 1 1

1 1 1 1

1 1 1

MM

MM

1 1 1 1

1 1 1

1 1 1 1

MM

i i i i

MM

1 1 M

1 1 1

 ff*-

1 1 1 1

! 1 1

i i i i

M 1 l_

:

t ~

^

M 1 l~

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197 

YEARS

Gaging-station number: 11-5258.

Gaging-station name: Weaver Greek near Douglas City, Calif.

Elevation of gaging-station datum, in feet, above msl: 1,680.

Notable flood peaks: 2,920 ofs Jan. 31, 1963; 2,860 cfs Jan. 20, 1964.

5p 20.0

15.0

*

10.0

5.0

0.0

o LU

£ -5.0

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5259.

Gaging-station name: Browns Greek near Douglas Oity, Calif.

Elevation of gaging-station datum, in feet, above msl: 1,640.

Notable flood peaks: 3.950 cfs Feb. 18, 1958; 3,790 cfs Dec. 22, 1964.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E25 

KLAMATH RIVER BASIN Continued

LOW-WATER ELEVATION, STREAMBED 1

BELOW(-) GAGE FEET, ABOVE ORDATL

1 tx 

CUl O £0 b oc

_i i i i

^

2

3

~i i i i

MM

1 1 '1 1

1 1 1 1

MM

MM

MM

MM

MM

MM

1 1 1 1

MM

1 1 1 1

MM

1 1 M

MM

MM

1 1 1 1

00

MM

Mil

O

>0 oO

1 1 1 1

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~-

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2

2

10 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197 

YEARS

Gaging-station number: 11-5265.

Gaging-station name: North Fork Trinity River at Helena, Calif. 

Elevation of gaging-station datum, in feet, above msl: 1,380. 

Notable flood peaks: 35,800 cf s Dec. 22,1964.

Remarks: During February 1964, sediment was artificially introduced into 

channel in the vicinity of the gaging station.

LOW-WATER STREAMBED ELEVATION, 1 

ABOVE EET, OR BELOW<-) GAGE DATL

1 tx 

<Jn CO cj j\ 3 0C

-Mil

:

:

\

~M 1 1

III!

1 II 1

1 II 1

Mil

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1 1 1 1

MM

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MM

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Mil

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MM

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:

2

I "~

MM"

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5270.

Gaging-station name: Trinity River near Burnt Ranch, Oalif. 

Elevation of gaging-station datum, in feet, above msl: 944.05. 

Notable flood peaks: 172,000 cfs Dec. 22, 1955; 81,500 cfs Feb. 25, 1958; 

78,100 cfs Dec. 22,1964.
E26 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

KLAMATH RIVER BASIN Continued

ujg

15.0

Si- 10.0

cos

;

o 0.0

i i i i i i i i i i i i

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5274.

Gaging-station name: New River at Denny, Oalif.

Elevation of gaging-station datum, in feet, above msl: 1,949.34.

Notable flood peaks: 60,000 cfs Dec. 22,; 1964.

|2

LU ^~.

Sg- 10.0

K 5.0

oc ... ui ir

5g 0.0

It3ui _ en

1 1 I 1

I

;

;

;

~l 1 1 1

1 1 1 1

MIL

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 1 1

1 1 1 1 1 1 1 1

1 1 1 1

1 1 1 1

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o .

i i i i

1 1 l 1

°000

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IMF'-

:

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;

Mil"

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5281.

Gaging-station name: South Pork Trinity River at Forest Glen, Oalif. 

Elevation of gaging-station datum, in feet, above mal: 2,253.49. 

Notable flood peaks: 41,200 ef s Dec. 22,1964.

Remarks: Discontinued September 1965.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E27 

KLAMATH RIVER BASIN Continued

STREAMBED ELEVATION, LOW-WATER 1

EET, ABOVE ORBELOW(-) GAGE DTU

1 fs -

e uiojto ac

_i i i i

:

I

;

~l 1 1 1

1 1 I 1

1 I 1 I

1 1 1 1

1 1 1 1

1 1 1 1 I 1 1 1 1 1 1 1

I i i i

1 1 1 1

I I i i

1 1 1 1

I I i I

1 1 1 1

i i I 1

1 1 1 1

°°o 0 ,

1 1 1 1

1 1 1 1

>°OOO(

1 1 1 1

1 1 1 l_

:

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1 1 i r

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5284.

Gaging-station name: Hayfork Creek near Hayfork, Calif. 

Elevation of gaging-station datum, in feet, above msl: 2,555.27. 

Notable flood peaks: 3,880 cfs Dec. 22,1955; 4,210 cfs Feb. 8,1960; 7,520 cfs 

Dec. 22,1964.

Remarks: Discontinued September 1965.

.OW-WATER STREAMBED ELEVATION, 1 

EET, ABOVE ORBELOW<-) GAGE DATl

 > 

e ouin to »c

_i i i i

\

\

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1 1 1 1

Mil

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1 1 1 1

1 1 1 1

Mil

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1 1 1 1

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1 1 1 1

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MM

OOOO

1 1 1 1

Mil

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1 1 M

1 1 1 l_

:

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> ~

MM"

"~ "l910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197 

YEARS

Gaging-station number: 11-5285.

Gaging-station name: Hayfork Creek near Hyampom, Calif. 

Elevation of gaging-station datum, in feet, above msl: 1,270.67. 

Notable flood peaks: 25,300 cfs Dec. 22,1955; 28,800 cfs Dec. 22,1964.
E28 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

KLAMATH RIVER BASIN Continued

£=> 20.0

15.0

S~ 10.0

5.0

o 0.0

-5.0

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5290.

Gaging-station name: South Fork Trinity River near Salyer, Calif. 

Elevation of gaging-station datum, in feet, above msl: 549.99. 

Notable flood peaks: 65,100 cfs Dec. 22, 1955; 

95,400 cfs Dec. 22, 1964.

Remarks: The low-water streambed elevations are measured from the datum 

in existence prior to July 26, 1965. On this date, the datum 

was raised 12.55 feet.

LOW-WATER STREAMBED ELEVATION, 1 

FEET, ABOVE BELOW(-) OR GAGEDATl

1 IX 

Ul OC

E b c

_M 1 1

:

;

:

~i 1 1 i i i i i MM

MM

MM

MM

MM

1 1 1 1

1 1 1 1

MM

MM

MM

Mil

MM

MM

MM

4 

0

MM

MM

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1 M 1

M 1 l_

:

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2

i M r

10 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 197 

YEARS

Gaging-station number: 11-5298.

Gaging-station name: Willow Creek near Willow Creek, Calif. 

Elevation of gaging-station datum, in feet, above msl: 585.54. 

Notable flood peaks: 17,000 cf s Dec. 22,1964.

Remarks: On July 14, 1965, the gaging station was moved 1.4 miles upstream.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E29 

SMITH RIVER BASIN

LOW-WATER STREAMBED ELEVATION, 1 

EET, ABOVE ORBELOW(-) GAGE DTL

1 IN - tn CoO jiCJi3 oc

_i i i i

:

:

:

"MM

i i i i

MM

i i i i

i i i i

MM

i i i i 1 M 1 i i i i i i i i i i M

O '

MM

MM

1

MM

1 1 1 l_

:

:

Mil"

1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5310.

Gaging-station name: Middle Fork Smith River at Gasquet, Calif. 

Elevation of gaging-station datum, in feet, above msl: 352.65. 

Notable flood peaks: 18,100 cfs Dec. 2, 1962; 41,000 cfs Dec. 22, 1964.

Remarks: Discontinued September 1965.

 = £U.U

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1910 1915 1920 1925 1930 1935 1940 1945 1950 1955 1960 1965 1970

YEARS

Gaging-station number: 11-5325.

Gaging-station name: Smith River near Crescent City, Calif. 

Elevation of gaging-station datum, in feet, above msl: 89.61. 

Notable flood peaks: 152,000 cfs Oct. 29, 1950; 165,000 cfs Dec. 22, 1955; 

228,000 cfs Dec. 22,1964.
E30 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

COMPARATIVE CROSS SECTIONS

These cross sections are for stream-gaging locations that experienced the greatest changes between the 1964 and 1965 low-water 

streambed elevations.

EEL RIVER BASIN

20.0

'

15.0

a" 5.0

toes 

SO 

2iu 0.0

<*5 I- O 

CO CD

-5.0

0 20 40 60 80 100 120 140 160 180 200 220 240 

CHANNEL WIDTH, IN FEET

Gaging-station number: 11-4722.

Gaging-station name: Outlet Creek near Longvale, Calif. 

Cross sections: Date: Oct. 25, 1963. 

Date: June 22, 1965.

Remarks: Cross sections surveyed.

20.0

15.0

O Ul m 

CDQ: 

So 

u. 0.0

-5.0

Jan. 5, 1966

\ Feb. 1, 1963v _ 

*~

0 20 40 60 80 100 120 140 160 180 200 220 240 

CHANNEL WIDTH, IN FEET

Gaging-station number: 11-4729.

Gaging-station name: Black Butte River near Covelo, Calif. 

Cross sections: Date: Feb. 1, 1963. Discharge: 4,160 cfs. 

Date: Jan. 5, 1966. Discharge: 4,630 cfs.

Remarks: Cross sections from cableway discharge measurements.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E31 

EEL BIVEB BASIN Continued

0 25 50 75 100 125 150 175 200 225 250 275 300 

CHANNEL WIDTH, IN FEET

Gaging-station number: 11-4730

Gaging-station name: Middle Fork Eel River below Black Butte River near

Covelo, Calif.

Cross sections: Date: Nov. 24, 1963. 

Date: June 23, 1965.

Remarks: Cross sections surveyed.

U-Q

ZLU 

 O

15.0

C~ 10.0

CQQ; 

20

< .

5.0

0.0

Jan. 7, 1966

20 30 40 50 60 70 80 90 100 110 120 130 140 

CHANNEL WIDTH, IN FEET

Gaging-station number: 11-4777.

Gaging-station name: South Fork Van Duzen River near Bridgeville, Calif. 

Cross sections: Date: Dec. 3-, 1962 Discharge: 1,120 cfs. 

Date: Jan. 7, 1966 Discharge: 1,120 cfs.

Remarks: Cross sections from cableway discharge measurements.
E32 CONTRIBUTIONS TO THE HYDROLOGY OF THE UNITED STATES 

KLAMATH RIVER BASIN AND SMITH RIVER BASIN

.5

tpi

Ld <

u-5

ZLd

o" S

< 1

=11

^ 5 t- O

*

15.0

10.0

5.0

0.0

-<;n

_i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i i | i i i i_

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_ _

f ~=

^_ 2

- I

- ~~^^ June 3, 1965 ^ \_^/ I

- ""~~ --. /

I. Apr. 29, 1964^' "^X, ___ t_/ -

-

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10 20 30 40 50 60 70 80 90 100 110 120 130 

CHANNEL WIDTH, IN FEET

Gaging-station number: 11-5223.

Gaging-station name: South Fork Salmon River near Forks Of Salmon,

Calif.

Cross sections: Date: Apr. 29, 1964. Discharge: 697 cfs. 

Date: June 3, 1965. Discharge: 697 cfs.

Remarks: Cross sections from cableway discharge measurements.

20.0

Ld < 

"-S

ZLd

 O 

1 S

ii

Si

^ Ld 2"

CO Q£

SOSLd 0.0

-5.0

15.0

503 -u

.Mar. 16, 1965

X .Oct. 19, 1962

10 20 30 40 50 60 70 80 90 100 110 120 

CHANNEL WIDTH, IN FEET

Gaging-station number: 11-5274. 

Gaging-station name: New River near Denny, Calif. 

Cross sections: Date: Oct. 19, 1962. Discharge: 366 cfs. 

Date: Mar. 16, 1965. Discharge: 371 cfs.

Remarks: Cross sections from cableway discharge measurements.
LOW-WATER STREAMBED ELEVATIONS, NW. CALIFORNIA E33 

KLAMATH BIVEB BASIN AND SMITH BIVEB BASIN Continued

LU < 

u-0 15.0

§5°-~ 10.0

5.0

0.0

-5.0

\ Jan. 6, 1964

80 100 120 140 160 180 200 220 240 260 280 300 320 

CHANNEL WIDTH, IN FEET

Gaging-station number: 11-5290.

Gaging-station name: South Fork Trinity River near Salyer, Calif. 

Cross sections: Date: Jan. 6, 1964. Discharge: 1,120 cfs. 

Date: May 21, 1965. Discharge: 1,030 cfs.

Remarks: Cross sections from cableway discharge measurements.

20.0

15.0

£~ 10.0

2j5

o

5.0

LU

SO2u 0.0

cc>

I O 

CO 00

v Apr. 21, 1965

'Dec. 3, 1964

"I I I I I I I I I I I I I I I I H I I II L 1 I I I L I I I I I I I I I I I I

50 60 70 80 90 100 110 120 130 140 150 160 170 

CHANNEL WIDTH, IN FEET

Gaging-station number: 11-5310.

Gaging-station name: Middle Fork Smith River near Gasquet, Calif. 

Cross sections: Date: Dec. 3, 1964. Discharge: 2,050 cfs. 

Date: Apr. 21, 1965. Discharge: 1,870 cfs.

Remarks: Cross sections from cableway discharge measurements.

US. GOVERNMENT PRINTING OFFICE: 1969 O 348-307