35o:

EFFECT OF FISHWAY SLOPE ON RATE
OF PASSAGE OF SALMONIDS

Marine Biological Laboratory

1960

WOODS HOLE, MASa

SPECIAL SCIENTIFIC REPORT-FISHERIES Na 350

United States Department of the Interior, Fred A. Seaton, Secretary

Fish and Wildlife Service, Arnie J. Suomela, Commissioner

Bureau of Commercial Fisheries, Donald L. McKernan, Director

EFFECT OF FISHWAY SLOPE ON RATE OF
PASSAGE OF SALMONIDS

by

Joseph R. Gauley
Fishery Research Biologist

U. S. Fish and Wildlife Service
Special Scientific Report --Fisheries No. 350

Washington, D. C.
June I960

CONTENTS

Introduction

Experimental equipment ,

Laboratory

Fishways

Procedure

Types of tests

Release of fish

Timing of fish ,

Analysis of passage time ,
Results ■

:16 slope, 1.0-foot rise

:8 slope, 1.0-foot rise

:8 slope, 1.5-foot rise

:8 slope, 2.0-foot rise

Other factors affecting passage time.
Summary

Literature cited ,
Appendix tables.

Page

2

2

2

3

3

3

4

4

4

4

5

6

7

8

11

11

12

111

EFFECT OF FISHWAY SLOPE ON RATE OF
PASSAGE OF SALMONiDS"^

by
Joseph E. Gauley

U. S. Fish and Wildlife Service
Seattle, Washington

ABSTRACT

This study on the effect of fishway slope on rate of passage of salmonids
was made by comparing passage time of fish in two fishways with different
slopes.. It is based mainly on steelhead (Salmo gairdneTi) but includes some
Chinook (0 nc orhync hu s tshawytscha) and silver (Oncorhynchus kisutch) salmon.
Both fishways were pool -and -overfall type in which 6 feet of elevation
was gained. Passage of steelhead in the l:8-slope fishway was in general,
as fast as or faster than in the 1:16 -slope fishway. In the 1:8 -slope fishway,
the passage time appeared to increase with an increase in rise between
pools. In the l:16-slope fishway, the passage tinne of steelhead increased as
the season progressed.

Slope, inasmuch as it determines the
length of a fishway, is one of the key
features in fishway design. Three slopes
have been used for fishways at dams on the
Columbia River during the past 25 years
but little or no research has been done to
determine which is the nnost effective.
Rock Island Dam fishways have a 1:10
slope, Bonneville and The Dalles Dann a
1:16 slope, and McNary Dam a 1:20 slope.
A 1:16 slope has apparently come to be
accepted as the standard for fishways at
major dams on the Colunnbia River.

Slope is also one of the nnain factors
in fishway cost. Construction costs have
been increasing steadily in recent years.
Bonneville Dam fishways, built in the I930's,

1 Research financed by the U.S. Army Corps of Engineers as
a part of a broad program of Fisheries-Engineering Research
for the purpose of providing design criteria for more economical
and more efficient fish-passage facilities at Corps projects on
the Columbia River.

cost $7,500,000« but The Dalles Dam fish-
ways, completed recently, cost $ 18,200,000.'
Fishway costs range from 6 to 16 percent
of the total cost of dams on the Columbia
and Snake Rivers.

A study to determine the effect of
slope on the passage of salmonids is now
in progress at the Fisheries -Engineering
Research Laboratory at Bonneville Dam.
The objectives of this phase of the study
are to determine (a) the effect of slope on
the rate of passage of salmonids in fish-
ways and (b) other factors that affect rate
of passage of salmonids in a fishway. This
study is extremely important because slope

2 Statement by the Fish and Wildlife Service in response to
request, dated November 20, 1953, of Senator Styles Bridges,
Chairman, Senate Appropriations Committee, for information
on the abundance, distribution, and value of the Columbia River
fish runs, the effect of dams on these runs, and certain other
related information. U.S. Fish and Wildlife Service, Office of
Regional Director, Portland, Oregon. 41 pages, mimeographed.

'U. S. Corps of Engineers.

is a major factor in fishway cost. If a
steeper slope fishway is found to pass
salmonids as efficiently as the standard
1:16- slope fishway, substantial savings in
the cost of future fishways will be realized.

The assistance of Dr. Gerald B. Collins
and Carl H. Elling in planning these experi-
ments and reviewing the manuscript is
gratefully acknowledged. Biologists of the
Biometrics Unit of the Seattle Biological
Laboratory* assisted in the statistical
analysis of the data. Corps of Engineers
personnel of the Hydraulic Laboratory at
Bonneville Dam advised on hydraulic
problems encountered. The following indi-
viduals participated in the experiment:
Richard L. Foust, Robert J. Holcomb,
James S. Johnson, Howard L. Raymond,
Edwin F. Roby, Robert S. Rupp, and Charles
R. Weaver. Credt is due Virginia Coleman
for the illustrations and Charles R. Weaver
and Edwin F. Roby for the photographs.
Acknowledgment is made to Milo C. Bell,
who reviewed the manuscript and offered
suggestions on its preparation.

EXPERIMENTAL EQUIPMENT

by a center wall. A fishway was installed
in each channel. The water supply for the
fishways enters through a diffusion chamber
at the bottom of the flow- introduction pool.
The water comes from the Bonneville
forebay through a large pipe into a valve
chamber where sliding gate valves control
the flow of water entering the diffusion
chamber. A detailed description of the
laboratory is given by Collins.'

Fishways

The test and control fishways were
constructed side by side in the experimental
flume. The slope was 1:16 in the control
(Types 1 and lA) fishway and 1:8 in the
test (Types 2-4) fishway. Both were pool-
and -overfall type fishways without sub-
merged orifices. Figure 1 and table 1 give
physical comparisons of the test and con-
trol fishways.

Weir 54

56 57

116 Slope

Laboratory

This study was made in the Fisheries -
Engineering Research Laboratory at Bonne-
ville Danri during the 1956 fish-migration
season. Although it is possible to test full
scale fishways in this laboratory, fishway
length and gain in elevation were linmited in
this study by the necessity of using pre-
fabricated fishways that could be readily
disassembled. The main features of the
laboratory are a collection pool, experi-
mental area, and flow -introduction pool.
Fish, diverted from the Washington shore
fishway into the collection pool, pass through
the experimental area and then are free to
continue through the flow -introduction pool
into the exit fishway and return to the
Washington shore fishway. The fish are not
handled during their entrance or exit.

The collection pool was 24 feet wide
and 30 feet long and had a water depth of 14
feet during the course of the experiments. A
picketed divider at the upstream end con-
trolled the entry of fish into the fishways.
The experimental flume (24 feet wide and
104 feet long) was divided into two channels

Weir 54

56

58
18

60

Slope

Weir

58 59 60
I 8 Slope

58.5 60
I : 8 Slope

Scole I inch= 20 feef

Figure l.--Diagram of control fishway (top) and the three test
fishways, comparing relative distance travelled and gain in
elevation. (Weir numbers are elevation of weir above mean
sea level).

* Formerly Pacific Salmon Investigations.

*CoUins, Gerald B. Research on fish passage problems.
Manuscript in preparation.

Table 1. — Dimensions of fishways used in the slope
studies, July to September 1956.

Mean

Rise

No

. of

Pool

Pool

pool

between

Elev.

Type

Slope

pools

length

width

depth

pools

gained

Feet

Feet

Feet

Feet

1

1:16

6

16.00

11.5

6.3

1.0

6

lA

1:16

6

16,00

6.0

6.3

1.0

6

2

1:8

6

8.00

11.5

6.3

1.0

6

3

1:8

4

12.00

11.5

6.05

1.0

6

4

1:8

3

16.00

11.5

5.8

2.0

6

One-thousand-watt mercury -vapor
lamps suspended 6 feet above the water
provided light at an average intensity at the
surface of 700 foot candles and in a range
from 300 foot candles along the wall to
1000 foot candles directly under the lights.

The head on the weirs, measured 4
feet upstream of the weir crests, was held
at 0.8 foot to maintain unifornn flow condi-
tions in both fishways. A greater head
tended to change the flow at the upper
weirs from plunging to streaming at un-
predictable times, which interrupted the
passage of fish (Elling and Raymond 1959).

PROCEDURE

TjT)es of Tests

Two types of tests were made: one to
obtain passage times for individual fish and
the other to obtain a passage time for
groups of 20 fish. Only salmonids were
used for both tests, and only a single
species in group tests.

Release of Fish

After the fish entered the release com-
partment (figure 2) from the collection

>> •

Figure 2.- -Release compartment used to identify and release fish.

3

pool, we recorded species and length and
then released the fish into either the test
or control fishway. When groups of 20 fish
were used, releases of one fish at a time
were made alternately into the test and
control fishways as rapidly as possible
until 20 fish had been introduced into each
fishway. Species not used in the tests were
returned to the collection pool by use of a
brail in the release compartment. When
individual fish were timed, the fish passed
entirely through the fishway before another
was introduced.

Timing of Fish

Timing started when the fish entered
the fishway at weir 54* and ended when they
left at weir 60. Individual fish were timed
with stopwatches. Two persons tinned fish
in each fishway. One recorded total time,
and the other recorded the time spent in
each pool. Groups were timed with a 20 -pen
recorder (figure 3). A push button at each
covinting point activated a pen which re-
corded the passage of a fish. Counting of
fish was done visually.

Figure 3. — Twenty pen recorder. (Noteaixpensarein operation).

'Weir numbers refer to elevation above mean sea level.

Analysis of Passage Time

Passage time was used as a basis for
comparing the 1:8 -slope fishway with the
1:16. The median was the measure used to
compare the passage times of individuals
and a table of confidence intervals was used
to test for differences between medians
(Dixon and Massey 1951 ).Ameasure termed
median elapsed time was used to compare
passage times of groups. This measure
was determined as follows: time was re-
corded for each fish as it entered the fish-
way at weir 54, with the recorder starting
at zero when the first fish crossed weir 54,
The time from zero was also recorded on
the same chart as each fishcrossed weir 60
when leaving the fishway. The median
elapsed time was then determined by sub-
tracting the time of the median fish at weir
54 from the time of the median fish at
weir 60. A t test was used to test for dif-
ferences between the means of the median
times.

Use of the measure, median elapsed
time, made it possible to terminate a given
test even though some of the slower moving
fish had not completed their ascent of the
fishway. To have obtained an arithmetic
mean of the passage tinnes for each group,
it would have been necessary to account for
the passage of all fish through the fishway,
a condition which on occasion would have
necessitated considerable delay in testing.
In .these experiments, all remaining fish
were readily removed from the fishway and
a subsequent test was begun as soon as the
fishway was cleared.

RESULTS

1:16 Slope, 1. 0-foot Rise

Prior to comparing ascent times in
fishways of different slopes, two identical
1:16 slope (Type 1) fishways (figure 4)
were constructed in the experimental flume.
If passage times were comparable in both
fishways, then any difference found after
slope had been altered would be ascribed to
the difference in slope.

Six groups of 20 steelheadCSa/OTo gairdneri)
and 6 groups of 30 steelhead were timed up
each fishway (table 2). An analysis of vari-
ance indicated no significant difference
existed between the means of the median
elapsed times of the north and south fish-
ways, or between the means of the 20- and
30 -fish groups.

Figure 4.--The two l:16-slope fishways in the experimental flume.

Table 2. — Comparison of steelhead passage time in
identical l:16-slope fishways,
July 24-27, 1957.

No. of

fish
in group

Median el

apsed time

Date

South fishway

North fishway

Minutes

Minutes

July 24

20

6.67

3.20

July 24

20

8.48

6.65

July 25

20

8.68

5.92

July 26

20

6.45

8.30

July 26

20

11.73

7.22

July 27

20

9.17

8.97

Mean

8.53

6.71

July 25

30

6.82

7.00

July 25

30

9.25

8.93

July 26

30

10.25

7.97

July 26

30

5.92

7.17

July 27

30

9.43

8.10

July 27

30

7.55

7.72

Mean

8.20

7.82

1:8 Slope, 1.0-foot Rise

This test fishway (figure 5) had a 1:8
slope with a 1.0-foot rise between pools.
It is listed as Type 2 in table 1. The control
fishway was Type 1.

Figure 5.--The l:8-slope fishway with a 1.0-foot rise between
pools.

Steelhead. - -Twelve groups of 20 steel-
head were timed in each fishway (table 3).
The mean of the median elapsed times in
the test fishway was 10.21 minutes, and in
the control, 15.42 minutes. A /test on the
means of the median elapsed times indi-
cated that passage time was significantly
lesser in the test fishway. Passage times
of the individual steelhead timed in these
fishways are shown in appendix tables 1
and 2. The median passage time in the test
fishway was less than that in the control
fishway but the samples were too small to
make a statistical test for significance.

Chinook. --Chinook salmon were not
abundant enough at this time of year to
make group releases. Five individual Chi-
nook were tinned in the test fishway and
three in the control fishway (appendix
tables 3 and 4). The passage times were
less in the test fishway than the control in
this small test.

Table 3. — Passage times of 12 groups of

20 steelhead timed in each fishway,

August 15-20, 1956.

Median elap

sed time

Date

Control fishway
(Type 1)

Test fishway
(Type 2)

Minutes

Minutes

August

15

12.18

10.85

August

15

15.97

9.18

Augus t

15

17.28

10.57

August

16

12.17

12.22

August

16

14.85

10.00

Augus t

16

16.65

12.20

August

16

14.38

6.90

August

17

14.90

8.03

August

17

18.63

10.83

August

17

21.80

9.58

August

20

13.15

11.97

August

20

13.07

10.20

Mean

15.42

10.21

1:8 Slope, 1. 5-foot Rise

This test fishway had a 1.5 -foot rise
between pools (figure 6). It is listed as

Type 3 in table 1. The control fishway was
Type 1. The species composition of the fish
run at this time of the season made it
impossible to use a group release tech-
nique, so tests were conducted with indi-
vidual fish.

Steelhead. - -Sixty -seven steelhead were
introduced into the fishways from August 24
to August 29, 37 in the test fishway (appen-
dix table 5) and 30 in the control fishway
(appendix table 6). The median passage
time was 9.67 minutes in the test fishway
and 13.72 minutes in the control. A table of
confidence intervals for the nnedian did not
show a significant difference between the
median passage times of the two fishways.

Other studies necessitated reducing
the control fishway width to 6 feet (figure
7) (Type 1-A). The test fishway was not
changed. On September 4, 5, and 6, passage
times of 21 steelhead were obtained in the
test fishway (appendix table 7) and 28 in the
control (appendix table 8). The median
passage time was 10.90 minutes in the test
fishway and 11.93 minutes in the control,
thus indicating no significant differences in
times bet'ween the two fishways.

Chinook, --Forty -two chinook salmon
were introduced into the fishways from
August 24 to August 29, 18 in the test fish-
way (appendix table 9) and 24 in the control
(appendix table 10). The median passage
tinne was 14,40 minutes in the test fishway
and 8.32 minutes in the control fishway. A
table of confidence intervals for the median
indicates that this is a significant difference.

On September 4, 5, and 6, 24 chinook
were introduced into the test fishway (ap-
pendix table 11) and 23 chinook into the
six -foot -wide control fishway (appendix
table 12). The median passage time was
10.83 minutes in the test fishway and 6.67
minutes in the control. The median time the
salmon spent in the control fishway was
less, but a table of confidence intervals
for the median indicates that the difference
between median passage times was not
significant.

Silvers. --Five silver salmon were
tested in the 1 1.5 -foot -wide control fish-
way and 9 in the test fishway (appendix
tables 13 and 14). The median passage
time in the test fishway was less but
statistical tests were not made.

Figure 6.--The l:8-slope fishwav with a 1.5-foot rise between pools.

^itffltfwB

Figure 7.--The l:16-slope fishway with the width reduced to 6 feet.

1:8 Slope, 2.0-foot Rise

This test fishway (Type 4) had a 2.0-
foot rise between pools (figure 8, Type 4).
The control fishway was Type 1 as listed
in table 1.

Twelve groups of 20 steelhead were
tested in each fishway (table 4). The mean
of the median elapsed times of the test
fishway was 14.28 minutes and of the
control, 12.73 minutes. A t test on the

Figure 8.--The l:8-slope fishway with a 2.0-foot rise between pools on the left and the 1:16-
slope fishway with a 1,0-foot rise between pools on the right.

means of the median elapsed times showed
that the difference was not significant.

Table 4. — Passage times of 12 groups of

20 steelhead timed in each fishway,

August 7-10, 1956.

Median elapsed time

Date

Control fishway
(Type 1)

Test fishway
(Type 4)

Minutes

Minutes

August

7

14.97

14.37

August

7

13.03

11.92

August

7

8.80

10.92

August

8

12.02

19.12

August

8

12.98

12.10

August

8

18.72

16.62

August

9

12.08

17.58

August

9

8.38

9.75

August

9

11.28

16.63

August

9

15.78

15.77

Augus t

10

11.67

15.72

August

10

13.00

10.80

Mean

12.73

14.28

On August 6, 8 individual steelhead
were tested in the control fishway and
15 in the test fishway (appendix tables
15 and 16). The median passage time
was 12.36 minutes in the control fishway
and 12.52 minutes in the test fishway
indicating no significant difference between
passage times in the two fishways.

Despite the fact tha.t no significant
difference could be shown between pas-
sage times in the 2 fishways, there are
indications that the test fishway was the
more difficult to ascend. It was noted
that some fish required more than one
attempt to go over a weir. We observed
this difficulty in the group tests but only
in the individual tests could we obtain a
complete record. Of the 15 individuals in
the test fishway on August 6, 6 passed
the 3 weirs with only one attempt at
each weir. The remaining 9 required more
than one attempt to go over a weir some-
where in the fishway. The maximum num-
ber of attempts at a weir by the same
fish was six. The 15 fish averaged 11/3
attempts in crossing the weir. None of
the eight fish in the control fishway required
more than one attempt to cross a weir.

Other Factors Affecting Passage Time

There are numerous factors which
possibly influence passage time of sal-

monids. Some of these are discussed
briefly in the following section.

Length of fishway.--It was theorized
that if length of fishway influenced time
per pool, a fish would spend a progres-
sively longer time in each pool as it
ascended the fishway. An analysis of vari-
ance was made on the pool tinries of indi-
vidual Chinook salmon and steelhead tested
in August and September in both the con-
trol and test fishways. There was no
significant difference between the meajis
of the pool times (appendix tables give
mean pool times). This is not conclusive
but admits two possibilities: (1) the higher
variances within pools obscured any dif-
ferences occurring between pools, or
(2) the fishways were too short to detect
a tiring effect. Additional studies are
planned to explore both possibilities.

Seasonal variation.- -Data on seasonal

variation in passage time are limited to
three periods throughout the season when
groups of steelhead were tested in the
control fishway (July 24-27, August 7-10,
and 15-20). There are passage times of
12 groups of steelhead in each of the 3
periods for testing (table 5). An analysis

3000

2400

■ 1800

• 1200

- 600

Figure 9.--Mean of median elapsed time (round dots) of three
series of groups of steelhead in the l:16-slope fishway plotted
against time of year. Also indicated is the daily count of
steelhead (solid line) in the Washington shore fishway for the
period July 15-September 1, 1956,

of variance shows a significant difference
between the mean times.

Table 5. — Passage times of groups of
steelhead in the control fishway (Type 1),
July and August 1956.

Median elapsed time

July 24-27

August 7-10 August 15-20

Minutes

Minutes

Minutes

6.67

14.97

12.18

8.48

13.03

15.97

8.68

8.80

17.28

6.45

12.02

12.17

11.73

12.98

14.85

9.17

18.72

16.65

6.82

12.08

14.38

9.25

8.38

14.90

10.25

11.28

18.63

5.92

15.78

21.80

9.43

11.67

13.15

7.55

13.00

13.07

Mean 8.37

12.73

15.42

The means of the nnedians of the
three series were plotted against time
of year (figure 9). The three points indi-
cate a direct correlation between the
median passage time and the number of
days elapsed from the start of the run;
i.e., steelhead moved progressively slower
as the season advanced. Daily counts of
steelhead passing through the Washington
shore fishway are presented to show the
distribution of the run with respect to
season.

Time of day. --The median elapsed
times ol group tests of steelhead made
in July and August were divided into
morning (8:00 a.m. to 12:00 noon) and
afternoon (12:01 p.m. to 4:30 p.m.) periods
(table 6).

Although differences existed between
fishways, and within fishways at different
times, no differences can be shown bet^veen
morning and afternoon periods in the same
fishway on the same dates.

Rise between pools.- -There is some
evidence that the magnitude of rise be-

tween pools affects passage time in a
fishway of a given slope. In the l:8-slope
fishway, three rises between pools (1.0,
1.5, and Z.O feet) were under study during
the season. A fairly large group of fish
was timed up the fishway for each rise.
Although species composition of each
group was not the same (see table 7), it

is believed that the median elapsed times
may be connpared as each time would
reflect the passage time, in general, of
the fish passing Bonneville during that
period. Figure 10 indicates a direct rela-
tionship between height of rise between
pools and passage time required to ascend
a total rise of 6 feet.

Table 6. — Passage times of groups of steelhead
in morning and afternoon periods in both
fishways, July and August 1956.

South

fishway

North

fishway

Morning

Afternoon

Morning

Afternoon

Minutes

Minutes

Minutes

Minutes

July 24-27

8.59

8.08

7.83

6.70

Aug. 7-10

12.02

13.43

14.56

13.99

Aug. 15-20

15.09

16.05

10.56

9.71

Mean i/

12.22

12.09

10.90

10.19

\J Number entering fishway; species composition is based on fish leaving
fishway during test period.

Table 7. — Passage times and species composition of three groups

of fish ascending three variations of a l:8-slope fishway

for a total rise of 6 feet, August 1956.

Date

Rise Number Median
between oi—' elapsed
pools fish time

Species composition

Steel- Blue-

head Silver back Other J/

Chinook

Feet
1.0

291

Minutes
10.63

108

Ni

8/21

144

8/30

1.5

255

21.61

92

68

8/10

2.0

203

32.47

32

110

Number of fish

48

26
1

3

\J Number entering fishway; species composition is based on fish leaving

fishway during test period.
2/ Suckeis (Catostomus sp) and squawf ish (Ptvchocheilus sp) .

10

40

30

M
Q>

3
C

-£ 20

E

10

©

^(203fish)

8-30-56
(255 fish)

f^ 8-21-56
^(291 fish)

X

0 I 2

Rise between pools in feet

with a 1.0-foot rise between pools than
in the l:16-slope fishway with a 1.0-foot
rise between pools. No significant dif-
ference was found in the passage times
of steelhead in the l:8-slope fishway with
a 1.5-foot rise between pools and in the
l:l6-slope fishway with a 1.0-foot rise
between pools. No significant difference
was found in the passage time of steel-
head in the l:8-slope fishway with a 2.0-
foot rise between pools and in the 1:16-
slope fishway with a 1.0-foot rise between
pools but observations indicate the test
fishway was more difficult to ascend.

Chinook salmon appeared to be slower
in the l:8-slope fishway with a 1.5 -foot
rise between pools than in the 1:16- slope
fishway with a 1.0-foot rise between pools.
Further studies are necessary before any
clear-cut conclusions can be drawn with
respect to chinook salmon passage in the
1: 8- slope fishway.

Using time per pool as an index of
fatigue, no tiring effect could be shown
for chinook salmon and steelhead as they
ascended either fishway.

Figure 10.- -Comparison of fish ascent (groups of mixed species)
in tiiree variations of a l:8-slope fishway. Ascent plotted as
median elapsed time to complete a total rise of 6 feet.

Further evidence is found by com-
paring passage times of groups of steel-
head in the l:8-slope fishway. The nnean
time of 12 groups of 20 steelhead was
10.21 minutes in the fishway with a 1.0-
foot rise between pools and 14.28 minutes
with a 2.0-foot rise between pools.

No difference could be shown between
median elapsed times of steelhead timed
in the morning and in the afternoon.

In the I:16-slope fishway, the rate of
passage of steelhead decreased during the
season, the earlier part of the run being
faster.

In the l:8-slope fishway there was a
suggested direct relationship between pas-
sage time of groups of mixed species and
the rise between pools.

SUMMARY

The effect of fishway slope on the
rate of passage of salmonids was studied
at the Fisheries-Engineering Research
Laboratory at Bonneville Dam by com-
paring passage tinnes of fish in a l:8-slope
fishway with passage times in a conven-
tional l:l6-slope fishway. Both fishways
were short segnnents of pool-type fishways
without submerged orifices. There was a
6-foot gain in elevation to each fishway.

Steelhead passage times were signifi-
cantly shorter in the l:8-slope fishway

LITERATURE CITED

DIXON, WILFRID J., AND FRANK J. MAS-
SEY, JR.
1951. Introduction to statistical analy-
sis. First edition. New York, Mc-
Graw-Hill Book Company, 370 pages.

ELLING, CARL H., AND HOWARD L.RAY-
MOND.
1959. Fishway capacity experiment,
1956. U.S. Fish and Wildlife Serv-
ice, Special Scientific Report- -Fish-
eries No. 299, 26 pp.

11

BCF No. ei2.

APPENDIX TABLE 1.— Steelhead ascent (time per pool and total tljne) In a l:8-8lope flBhway,i/
August 1956

Time

of

day

Length ^
(inches)

Pool time in minute (

3 between weirs^

TotalV

Date

5'*-55

55-56

56-57

57-58

58-59

59-60

time

August ll

11:00 AM

20

6.18§/

ll:l6 AM

2h

1.27

1.37

.57

2.20

2.33

1.1»8

9.22

11:35 AM

20

.12

.93

.50

1.12

3.03

1.22

6.92

12:57 AM

2k

.63

.07

.07

.03

.73

7.87

9.1*0

1:20 PM

26

1.05

1.67

1.83

1.22

.97

2.90

9.63

August 20

3:30 m

2U

2.52

.53

2. 1*3

1.63

1.78

.37

9.23

4:05 PM

20

.55

.60

5.28

3.27

2.92

3.00

15.62

Mean

1.02

.86

1.78

1.58

1.96

2.81

9.1*6

l_/ This was a 6 pool fishway with pools 8 feet long, 11.5 feet wide, and 6.3 feet deep.
There was a 1.0-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weirs above mean sea level.

^/ May differ slightly from sum of pool times as it was taken independent of pool times.

5/ Pool times not taken.

APPENDIX TABLE 2. --Steelhead eiscent (time per pool and total time) in a l:l6-slope fisbuay^' ,
August 1956

Time

of

day

LengthS/
(inches)

Pool time in minutes between welrsi/

TotalV

Date

5l*-55

55-56

56-57

57-58

58-59

59-60

time

August ll*
August 20

11:10 AM

12:59 PM

1:30 PM

3:21* PM

22

28
20
18

.1*6
i*.ao

,80
1.35

.53

10.90

1.18

.77

.1*2
1.70
1.10

.67

.35
l*.78

.87
2.1*2

.37
1.70
1.27
2.07

1.08
.13

i*.ao
5.18

3.17
23.1*2

9.1*2
12.1*5

Mean

1.70

3.31*

.97

2.10

1.35

2.65

12.12

1/ This was a 6 pool fishway with pools lb feet long, 11.5 feet wide, and 6.3 feet deep.
These was a 1.0-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weir above mean sea level.

4/ May differ slightly from sum of pool times as it was taken independent of pool times.

12

APPENDIX tabu; 3.— Chinook ascent (time per pool and total time) in a l:8-8lope fisliway,i/
August 1956.

TlJue

of

day

Length ^
(inches)

Pool time in minutes between weirs^

TotalV

Date

51*- 55

55-56

56-57

57-58

58-59

59-60

time

August lit
August 17

10:50 AM
1:37 PM

2:25 PM
2:U5 PM
3:00 PM

16
12

36
36
20

3.67

2.70

.13

.07
6.30
3.30

.13
.12
.12

.07

.10

3.33

.02

.03

3.05

.22
.73
.18

3!l*0^

h.XT

9.97
10.12

Mean

2.17

3.22

.12

1.17

1.03

.38

6.55

1/ This was a 6 pool fishway with pool 8 feet long, 11.5 feet wide, and 6.3 feet deep.
There was a 1.0-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weirs above mean sea level.

^/ May differ slightly from sum of pool times as it was taken independent of pool times.

5/ Pool times not taken.

APPENDIX TABI£ U. --Chinook ascent (tljne per pool and total time) in a l:l6-slope fishwayi/ ,
August 1956.

Tljne

of

day

Length^
(inches)

Pool time in minutes between weirs ^

TotalV

Date

5lv-55

55-56

56-57

57-58

58-59

59-60

time

August lU

17
20

11:00 AM
2:'tO PM
3:U0 PM

20
30
13

3.58
5.33
3.85

3.08

.60

l.ltB

.ItO

2.70
.77

.73
6.U5
2.25

1.07

1.00

.52

.30

5.58

.65

9.17

21.67

9.52

Mean

U.25

1.72

1.29

3.1't

.86

2.18

13.1*5

1/ This was a 6 pool fishway with pools 16 feet long, 1 1 . s feet wide, and 6,3 feet deep.
There was a 1.0- foot rise between pools.

2/ Length of fish was estimated.

V Weir numbers are based on elevation of weir above mean sea level.

4/ May differ slightly from sum of pool times as it was taken independentof pool times.

13

APPENDIX TABI£ 5.--Steelhead ascent (time per pool and total time) In a l:8-slope fishvayi/
Aiigust 195°

Time

of

day

Length 2/
(incbes)

Pool

time in minutes between

weirs 3/

Total y

Date

54-55.5

55.5-57

57-58.5

58.5-60

time

August 2k

11:50 AM

26

.45

.30

3.35

.28

I+.37
.95

12:02 PM

30

.38

.25

.12

.18

1:00 PM

18

1.22

2.07

3.92

7.07

• ••

11+.28

1:20 PM

26

.98

.28

.92

.15

2.3^

1:55 PM

30

1.32

1.97

5.25

I+.33

12.83

2:35 PM

18

.10

.50

11.15

.92

12.67

3:15 PM

18

1.37

1.1*8

3.0a

.23

6.13

August 27

3:26 PM
8:1*0 AM
8:U8AM

20
2l*

18

.1*6
.67
.93

.75

.1.0

1.68

2.03
^+.33
3.72

I+.03
.13
.22

7.27
5.53
6.55

9:23 AM

2Q

1.63

8.57

1+.35

10.75

25.28
9.05

10:19 AM

16

.72

1.10

2.83

1+.1*0

10:55 AM

20

1.30

.57

3.1+3

I+.I3

9.1+2

11:10 AM

22

1.32

2.72

3.1+6

2.20

9.67

11:1*0 AM

21*

23.87

2.1*2

6.38

.27

32.93

12:38 PM

18

.28

1-53

1.63

2.1+6

5.92

12:50 PM

Ik

.13

11.00

1+.88

.1+5

16.1*6

1:30 PM

20

7.28

.25

.33

1.07

8.92

2:36 PM

21*

2.50

3.52

1.37

1.68

9.07

3:25 PM

28

.23

.1*6

.30

.20

1.20

3:1+8 PM

3k

.23

17.02

I+.65

2.08

23.97

August 28

8:30 AM

18

.52

.53

.kd

.67

2.22

8:35 AM

21*

1.12

1.50

3.63

1.33

7.58

8:1*5 AM

20

1.37

2.73

.23

10.1+3

ll+.So

10:30 AM

22

.15

.08

22.93

.13

23.32

10:55 AM

ll*

3.03

5.20

2.68

1.52

12.1+3

11:15 AM'

15

.18

.20

22.68

.1*8

23.52

11:1*0 AM

16

18.25 5/
10.70

12:1*0 PM

12

.68

2.1*8

6.80

.72

12:55 PM

22

1.98

2.60

i+.ao

1+.08

12.87

1:15 PM

18

5.70

'+.97

3.1+3

1.85

15.95

3:30 PM

16

.93

1.13

2.35

2.17

6.57

3:1+5 PM

18

3.53

1.1*0

1.83

I+.27

11.05

l+:00 PM

18

.80

1.50

5.82

1+.15

12.23

August 29

3:15 PM

21*

A5

1.03

.52

1+.72

6.70

3:25 PM

22

.67

.60

3.22

15.73

20.20

3:55 PM

18

1.07

.1*2

1.58

1.1+3

1+.1+8

Mean

1.93

2.37

1+.27

2.79

11.56

1/ This was a- 4-po3l fishway with pools 12 feet long, 11.5 feet wide, and 6.05 feet deep.
There was a 1.5-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weir above mean sea level.

4/ May differ slightly from sum of pool times as it was taken independent of pool times.

5/ Pool times not taken.

14

APPENDIX TABLE 6.-

-Steelhead ascent (time per pool and total time) In a l:l6 slope
flshwayl/ August 1956

Time

of

day

Length 2/
(inches)

Pool

time in minutes between weirs^/

Total k/

Date

5U-55

55-56

56-57

57-58

58-59

59-60

time

August 2U

11:35 AM

22

7.38

3.27

1*.02

3.07

1.70

3.33

22.77

1:15 PM

2k

6.65

2.03

2.10

1.1*3

2.15

5.52

19.90

1:50 PM

22

1.00

.83

3.08

2.03

1.1*3

1.07

9.1*6

2:20 PM

26

2.26

2.12

2.07

1.1*5

• 30

2.1*6

10.68

August 27

10:19 AM

20

.73

.78

.1*8

1.33

1.25

.87

5.1*3

10:29 AM

22

2.97

i*.78

3.33

2.52

1.10

1.08

15.73

11:13 AM

26

16.10

1.85

1.37

2.15

1.07

1.88

2I+.U0

1:19 PM

16

• 50

.1*6

• 90

l*.03

.63

1*.1*5

10.98

2:21 PM

22

.1*6

.23

.52

.18

5.23

2.60

9.23

2:36 PM

lU

.1*3

.97

1.10

1.12

1.65

2.50

7.75

2:U7 PM

18

u.i*o

3.53

3.78

1.25

1.72

1.75

23.1*2

3:'tO PM

2U

1.1*8

2.93

.33

2.35

2.15

5.08

ll*.33

August 28

8:13 AM

ao

2.07

.38

1.63

1.05

1.13

3.57

10.32

8:4l AM

22

1.10

1.35

.57

2.1*6

.65

2.63

8.75

8:56 AM

26

g.io

5.83

2.32

1.15

U.38

3.50

19.27

9:28 AM

22

1.17

1.30

1.23

3.50

.13

3.90

11.25

9-M AM

2k

1.00

2.23

1.87

1.70

2.33

3.97

13.10

10:1*2 AM

2k

7.67

3.27

1.20

2.80

5.10

7.20

27.23

12:i*5 PM

2k

5.00

3.38

1.08

.82

1.35

1*.12

15.77

1:05 PM

26

.25

5.55

'*.35

1.58

.1*0

l*.17

16.28

1:26 PM

26

,22

.37

.10

.13

.12

19.1*5

20.37

1:55 PM

22

.77

.28

.92

1.77

1.03

1.03

5.83

2:35 PM

22

.83

.1*3

.33

.63

.55

.30

3.10

2:hh PM

26

3.1*8

5.32

.87

I.U2

3.55

l*.87

19.52

3:29 PM

2k

.83

1.1*8

1.08

2.30

1.63

2.08

9.1*2

3:1*1 PM

2k

.80

1.55

1.32

2.1*0

.35

.92

7.33

3:55 PM

26

3.53

3.52

2.63

1.1*0

2.1*2

U.23

17.72

August 29

2:00 PM
3:32 PM

30
30

2.77

3.97

3.13

2.70

3.05

2.78

18.1*2
18.75 5/

1*:10 ?V

18

2.73

.75

1.38

2.80

1.27

.22

9.15

Mean

3.02

2.25

1.69

1.85

1.72

3.50

1U.78

1/ ThlB was a 6-pool fishway with pools 16 feet long, 11. 5 feet wide, and 6.3 feet deep.
There was a 1.0-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weir above mean sea level.

k/ May differ slightly from stm of pool times as it was taken Independent of pool times.

^ Pool times not taken.

15

APPENDIX TABLE 7-

-Steelhead ascent (time per pool eind total tinie)ln a l:8-slope flsbway i/
September 1956.

Tiine

of

day

Length 2/
(Inches)

Pool time In minutes

between weir

s3/

Total k/

Date

51*- 55. 5

55.5-57

57-58.5

58.5-60

time

Sept. 1*

8:51* AM

20

1.33

1.1*0

2.30

.18

5.23

9:0U AM

21*

.27

.23

2.53

7.98

11.00

9:55 AM

28

1.1*0

1.73

2.1*0

3.03

8.60

10:55 AM

32

l*.55

7.93

9.08

5.1*6

27.05

11:1+5 AM

30

.60

.37

6.27

3.32

10.55

12:1+5 PM

28

1.25

1.05

1.70

6.92

10.90

1:37 m

26

.88

.08

3.03

.15

i*.l7

1:1+8 PM

26

2.78

.95

2.50

.23

6.1*6

3:25 PM

30

2.70

5.13

5.55

.50

13.97

Sept, 5

8:52 AM

28

8.1*1* 5/

9:20 AM

20

2.23

.10

8.1*8

7.65

18.1+6

10:28 AM

30

.1+3

.92

5.82

i*.32

11.50

2:29 PM

26

.37

.1*2

.23

2.1*3

3.1*6

3:lK) PM

21*

11.25

6.03

3.18

l*.33

2I+.80

Sept. 6

9:37 AM

30

2.67

1*.00

5.13

9.50

21.32

10:35 AM

30

.68

.1*3

8.U5

2.82

12.37

10:1+6 AM

28

.83

1.25

1.78

.13

1+.02

10:55 AM

21*

3.10

2.1*8

2.52

2.15

10.23

1:20 m

26

3.22

3.67

3.97

1*.00

ii+.a5

1:1*0 PM

20

2.18

2.33

.15

.13

1+.82

2:25 PM

30

1.18

2.15

3.18

5.93

12.1+3

Mean

2.20

2.J,3

3.91

3.56

11.80

1/ This was a l*-pool fishway with pools 12 feet long, 11.5 feet wide and 6. 05 feet deep.
There was a 1.5-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weir above mean sea level.

k/ May differ slightly from sum of pool times as it was taken independent of pool times.

2/ Pool times not taken.

16

APPENDIX TABLE 6. --Steelhead ascent (time per pool and total time) in
fishwayi September 195b.

a 1:16- slope

Time

of

day

Length 2/
(inches)

Pool times i

n minutes

between we

irs^

Total 4/

Date

54-55

55-56

56-57

57-50

58-59

59-60

time

Sept. k

9:55 AM

22

19.00 5/

11:15 AM

31*

.77

.43

4,07

.38

3.42

3.48

12.57

11:1*3 AM

2l*

2.57

2.13

2.30

2.02

1.62

3.15

13.78

12:145 PM

2l»

.30

.45

3-13

1.77

.63

.73

7.02

2:00 PM

32

.92

.73

.35

4.46

.13

2.63

9.23

3:32 PM

18

.43

.17

.20

.35

.22

.13

1.50

Sept. 5

8:50 AM

24

1.73

1.77

.40

.27

5.63

.20

10.00

9:ld AM

18

.22

1.65

1.10

.80

1.22

1.02

6.00

9:28 AM

21.

1.78

4.10

1-53

3.62

2.08

1.93

15.02

10:20 AM

16

1.63

.37

1.67

1.37

.13

1.37

6.53

10:29 AM

18

2.46

.60

.28

7.28

.30

3-33

14.28

10:55 AM

2lt

2.60

3.10

3.33

2.73

1.4b

2.18

15.40

U:l6 AM

21*

4.07

3.03

.38

.60

1.27

4.15

13.50

11:36 AM

30

.78

.33

4.22

1.78

2.42

1.22

10.73

12:U5 PM

20

1.33

.46

9.00

3.08

.90

7.85

22.63

1:13 PM

18

.73

.57

3.68

1.33

2.38

.27

8.98

2:U2 PM

29

1.03

1.63

2.92

1.67

4.43

2.58

14.27

3:35 PM

20

.52

.53

.63

.18

.20

.57

2.60

3:1»1 PM

2k

1.12

.43

.27

1.07

.18

1.82

4.90

lt:00 PM

18

.15

1.22

1.18

23.20

.30

2.15

28.23

Sept. 6

9:37 AM

22

1.12

.57

1.03

.42

1.98

2.25

7.37

9:50 AM

27

3.23

2.33

2.33

.60

2.27

.46

11.27

10:34 AM

20

1.46

1.67

1.87

2.30

1.35

2.63

11.30

11:15 AM

28

.40

.38

.60

11.93

.18

8.05

21.53

1:10 PM

28

30.00 5/

1:U2 PM

26

2.4o

23.42

3.46

2.40

2.85

2.20

36.70

3:1+9 PM

24

2.33

3.50

2.62

4.63

2.4o

3.07

18.55

1+:15 PM

28

• 58

.30

.52

.83

.57

1.57

4.37

Mean

1.41

2.15

2.o4

3.12

1.56

2.35

13.83

1/ This was a 6-pool fishway with pools I6 feet long, 6 feet wide and 6.3 feet deep.
There was a 1.0-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir nvimbers are based on elevation of weir above mean sea level.

4/ May differ slightly from sum of pool times as it was taken independent of pool times.

5/ Pool times not taken.

17

APPENDIX TABIB 9.

-Chinook salmon ascent (time per pool and total time) In a l:8-Blope
fishwayV August 1956.

Time

of

day

Length 2/
(inches)

Pool time in minutes between

weirs 3/

Total h/

Date

51*- 55. 5

55.5-57

57-58.5

58.5-60

time

August a'*

10:U5 AM

30

6.62

ltO.23

6.98

.12

53-97

12:07 PM

15

1.83

9.33

5.88

3.33

20.37

12:30 PM

2k

1.33

2.60

6.80

12.63

23.37

1:31 PM

16

3.05

3.33

5.68

7.08

19.15

2:lU PM

16

1.68

1*.03

1*.67

1.25

11.62

3:'K) PM

lU

1.70

1.1*2

3.27

• 30

6.68

August 27

9:00 AM

lU

2.20

2.33

3.38

.20

8.12

10:30 AM

12

3.22

2.1*0

U.38

'*.57

1'*.53

2:05 PM

30

2.90

5.90

9.75

6.70

25.27

2:55 PM

16

.57

.57

1.33

.1.8

2.93

3:31 PM

lU

8.27

.75

2.22

1.92

13.13

August 28

9:05 AM

30

1.17

6.63

6.30

.15

11*. 27

9:20 AM

32

2.02

7.82

5.57

9-35

21*. 75

1:30 PM

38

1*5.75 5/

August 29

1:140 PM

11*

1.50

.82

2.17

.53

5.03

1:1*9 PM

26

6.50

2.50

1.62

2.78

13.1*0

2:07 PM

24

3.60

7.98

5.63

8.1*3

25.65

k-.U. PM

sit

2.00

.32

10.90

.23

13.»^5

Mean

2.93

5.82

5.09

3.53

18.97

This was a l*-pool fishway with pools 12 feet long, 11.5 feet wide and 6. 05 feet deep.

There was a 1.5-foot rise between pools.

Length of fish was estimated.

Weir numbers are based on elevation of weir above mean sea level.

May differ slightly from sum of pool times as it was taken independent of pool times.

Pool times not taken.

18

APPENDIX TAEIE 10. --Chinook salmcr. ascent (time per pool and total tijne)
fishwayi/August I956.

in a 1:16- slope

Time

of

day

Length 2/
(inches)

Pool

time in

minutes between weirs ^

Total k/

Date

51*- 55

55-56

56-57

57-58

58-59

59-60

time

August 2h

1:1*5 PM

11*

1.07

0.1*2

0.60

0.27

0.18

0.15

2.67

2:05 PM

11*

0.63

2.58

1.00

1.1*6

2.88

1.17

9.75

2:25 PM

31*

0.75

1.00

0.23

0.23

0.18

0.50

2.95

3:15 PM

15

2.23

0.1*6

5.12

3.12

3.1*8

0.55

ll*.97

August 27

d:kO AM

18

0.75

0.25

1.18

1.30

0.15

0.^

1*.22

6:51 AM

2U

0.30

0.30

0.15

0.25

0.22

0.13

1.35

8:52 AM

15

2.38

2.33

2.52

1.62

1.17

1.88

11.88

9:06 AM

15

1.1*8

1.1*6

1.00

0.93

1^32

1.50

7.77

9:15 AM

18

1.08

0.1*2

0.22

0.15

1.08

0.1*6

3.1*0

9:26 AM

16

.65

1.15

0.68

6.32

.73

1*.1*0

13.92

10:50 AM

18

5.1*3

3.52

2.00

• 35

■ 53

6.1*0

18.23

12:26 PM

28

• 33

2.65

.33

.23

.53

11.70

15.33

12:51* PM

12

1.28

.20

1.58

2.00

1.77

.1*6

7.30

1:03 PM

20

2.63

.53

2.02

.27

.20

3.20

8.88

1:38 PM

12

2.1*6 5/

1:57 PM

30

.08

2.13

.13

5.12

2.50

2.87

12.88

2:13 PM

13

• 35

.53

1.22

.13

2.28

.ItO

5.02

August 26

6:31 AM

11*

1.58

1.08

.92

1.02

• 93

.1*6

5.95

9:2l* AM

30

.73

.53

.50

.20

.33

.23

2.58

11:16 AM

30

5.1*2

1.88

1.83

1.55

1.63

2.00

1U.31

2:09 PM

28

3.55

6.17

2.67

.35

.53

9.87

23.10

August 29

1:1*0 PM

13

.13

.17

.27

12.65

.18

• 30

13.72

3:37 PM

16

1.17

't,55

• 37

2.07

.27

1.67

10.03

3:56 PM

20

.17

•35

.20

2.12

.17

.28

3.27

Mean

1.1*9

1.51

1.17

1.90

1.01

2.22

9.00

1/ This was a 6-pool fishway with pools 16 feet long, 11.5 feet wide, and 6.3 feet deep.
There was a 1.0-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weirs above mean sea level.

kj May differ slightly from sum of pool times as it was taken Independent of pool times.

5/ Pool times not taken.

19

APPENDIX TABLE 11. --Chinook salmon ascent (time per pool and total time) in a l:8-slope
flshwayl/ September 1956.

Time

of

day

Length 2/
(inches)

Pool

time in minutes between weir

^

Total h/

Date

5'*-55.5

55.5-57

57-58.5

58.5-60

time

Sept. k

9:15 AM

30

1.10

1.23

1.37

6.27

9.93

9:27 AM

12

1.1*6

.30

2.30

.08

'*.17

l.T:^ AM

30

.10

.17

5.1*6

5.97

11.68

11:29 AM

32

1.20

5.30

5.83

.15

12.50

1:00 PM

19

1.1*3

3.35

5.1*0

.37

10.53

1:15 PM

20

6.05

5.25

3.92

i*.15

19.33

2:02 m

28

X.h3

9.37

i*.88

6.03

22.22

3:50 PM

23

1.67

2.12

3.05

6.83

13.67

Sept. 5

8:52 AM

Ik

.88

.93

3.15

.1*3

5.1*0

9:02 AM

16

.38

3.15

2.62

.38

11.53

10:10 AM

11*

.33

U.52

5.23

.12

10.20

10:25 AM

36

1.07

1.13

.23

.12

2.57

10:1*5 AM

28

.15

21.57

.17

.25

22.13

11:10 AM

36

.12

.10

1.50

.07

1.77

11:15 AM

20

2.83

7.68

5.60

8.83

25.02

12: 1+5 PM

30

.10

.08

.72

.07

.97

12:50 PM

15

1.38

3.20

3.92

.1*6

8.97

1:00 PM

29

1.28

6.03

8.60

5.67

21.58

1:35 PM

28

.12

.17

.22

.23

.75

1: 1*0 PM

30

.12

.10

2.65

.37

3.22

2:25 PM

20

.27

•17

.17

.57

1.17

Sept. 6

12:50 PM

28

.20

11.55

.22

.27

12.20

1:50 PM

18

3.95

.27

6.98

.10

11.28

1*:00 PM

21*

7.33

2.23

2.75

6.37

19.23

Mean

1.1*8

3.98

3.21

2.26

10.92

1/ This was a l*-pool fishway with pools 12 feet long, 11.5 feet wide and 6.05 feet deep.
There was a 1.5-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weir above mean sea level.

k/ May differ slightly from sum of pool times as it was taken independent of pool time.

20

APPENDIX TABLE 12. --Chinook salmon ascent (time per pool and total tljne) in a l:l6-slope
fishwayi/ September 1956.

Time

of

day

Length 2/
(incnes)

Pool times

in minutes

between

weirs 3/

Total 4/

Date

54-55

55-56

56-57

57-58

58-59

59-60

time

Sept. h

6:1*5 AM

26

.42

.55

.67

.46

.20

.33

2.63

d:55 AM

26

.38

.15

.13

.26

.17

.18

1.32

9:00 AM

26

1.27

2.15

1A3

2.22

.32

.63

7.98

9:10 AM

17

1.85

.28

2.67

.46

1.90

1.20

8.38

9:20 AM

26

.67

2.45

.17

.58

4.36

.1*3

8.67

9:33 AM

lb

.27

1.82

.13

9.55

.53

5.70

18.00

10:50 AM

30

3.52

.77

.58

5.08

1.02

2.18

13.12

11:33 AM

25

.62

4.46

.28

.1*3

.33

.50

6.67

12:58 PM

30

1.42

.37

11-37

2. 2D

.82

6.08

22.23

1:28 PM

26

1.67

4.67

2.67

3.10

1.4o

2.53

16.03

1:W m

36

.25

M

.23

1.00

.40

.32

2.67

3:18 PM

26

1.82

1.12

.97

1.63

2.05

.28

7.92

3:35 PM

24

.78

1.50

1.22

.50

1.18

.80

5.98

3:1*5 PM

26

1.65

.67

.15

.12

.15

3.37

6.07

Sept. 5

8:50 AM

14.00 5/

10:10 AM

15

1.02

.83

.73

1.03

.35

1.13

5.10

10:47 AM

24

.38

.15

1.37

.28

.15

.27

2.67

1:48 PM

26

3.07

3.67

2.30

1.40

.98

1.83

13.22

3:48 PM

15

• 92

.78

.98

2.90

.20

.25

6.03

Sept. 6

10:48 AM

27

.1*3

.23

9.60

.65

.55

.17

11.53

11:04 AM

14

1.37

1.40

.68

.52

.93

.50

5.1*5

12:45 PM

31*

2.42

2.95

4.28

.22

.13

M

10.43

4:10 PM

24

.18

• 37

.77

.73

.13

.50

2.67

Mean

1.20

1.44

,1.97

1.61

.83

1.35

8.64

1/ This vas a 6-pool fisbMay with pools 16 feet long, 6 feet vide and 6.3 feet deep.
There was a 1.0- foot rise between pools.

2/ Length of fish was estimated.

^ Weir numbers are based on elevation of velr above mean sea level.

4/ May differ slightly from sum of pool time as It was taken Independent of pool tines.

5/ Pool tljnes not taken.

21

APPENDIX TABLE 15-

-Steelhead ascent (time per pool and total time) in a l:l6-slope
fishwayi/ August I956.

Time

of

day

Length 2/
(inches)

Pool time in minutes between weirs^

Total k/

Date

5I+-55

55-56

56-57

57-53

58-59

59-60

time

August 6

10:37 AM
ll:llt AM
1:00 PM
1:20 PM
1:1+5 PM
1:55 m
2: 06 PM
2:15 PM

20

13
15
15
18
18
18
16

7.05

1.87

3.63

.63

.53

.67

I+.05

.1+6

2.02
3.63
1.62
.65
.70
h.X3

.22

1.63

2.15
.83
.82
.67

3.30

2.12

1.50
2.33

.80
2.97

.1+5
3.'+3

1+.57

2.20
• 97

1.78
.72

.1+6

2.08

.17

3.97
I+.60

2.33
.87

.30
3.03

II+.62
11.1+6 5/
13.25
17.53

8.05

6.55
3.70
20.03

Mean

2.61+

1.89

1.39

1.91*

1.83

2.28

11.90

1/ This was a 6-pool fishway with pools approxiiiately 16 feet long, 11.5 feet wide and

6.3 feet deep. There was a 1,0-foot rise between pools.
2/ Length of fish was estimated.

2/ Weir numbers are based on elevation of weirs above mean sea level.

4/ May differ slightly from sum of pool times as it was taken independent of pool times,
5/ Pool times not taken.

APPENDIX TABLE I6. --Steelhead ascent (time per pool and total time) in l:8-8lope fishway 1/
August 1956.

Time

Length 2/

Pool time

in minutes 1

between weirs 3/

Total V

of
day

(inches)

Date

5I+-56

56-53

53-60

time

August (

) 8:52 AM

19

I+.83

.30

19.32

2I+.I+5

9:25 AM

25

3.02

5.53

5.32

13.37

9:1+5 AM

2I+

3.08

15.23

6.73

25.10

10:33 AM

21+

3.02

11.78

6.25

21.03

11:00 AM

29

1.05

1.17

3.37

6.07

11:20 AM

25

3.58

3.17

3.67

10.1+0

11:33 /-M

28

10.33

5.50

3.30

21+.10

12:50 PM

21+

1.08

6.60

• 83

8.52

1:05 PM

21+

3.55

5.77

3.22

12.52

1:23 PM

28

.35

.13

.73

1.22

1:26 PM

26

.73

2.25

I+.67

7.67

1:52 PM

21+

2.00

9.1*8

1+.93

16.1+3

2:15 PM

26

.80

3.17

10.60

1I+.57

2:33 PM

21+

.1+8

1.33

2.02

3.87

2:38 PM

26

.73

.83

•17

1-73

Mean

2.58

1+.82

5.38

12.77

1/ This was a 3-pool fishway with pools 16 feet long, 11.5 feet wide, and 5.8 feet deep.

There was a 2,0- foot rise between pools.
2/ Length of fish was estimated.

2/ Weir numbers are based on elevation of weirs above mean sea level.
t^ May differ slightly from sum of pool times as it was taken independent of pool times,

22

6P0 696961

APPENDIX TABLE 13. --Silver salmon ascent (time per pool euad total time) in a l:8-slope
flshwayi/ August and September I956.

Time

of

day

Length 2/
(inches)

Pool time In minutes between weirs 2/

Total k/

Date

5'+-55.5

55.5-57

57-58.5

58.5-60

time

August 2l*
28

August 29
Sept. 1*

1:26 PM
, 8:15 AM
2:20 PM
2:1*0 PM
2:35 PM
3:10 PM
3:1*5 PM
1*:02 PM
8:1*5 AM

20
22
ll*
16
18
20
28
18
22

.1*8
1.87
1.87
1.30

1.15
1.12

1.1*8

.95

.05

1.33

.50

.63

.1*8

1.53

3.98
1*.63
2.67
1.20

2.55
1.03
2.70

2.1+6

.08

2.58

5.27

2.08
1^.33
2.20

2.73 5/

7.87

6.63

8.1*5

8.27

1.85 5/

6.1*3

6.97

7.92

Mean

1.32

.78

2.68

2.71

6.31*

1/ This was a U-pool fishway with pools 12 feet long, 11.5 feet wide and 6. 05 feet deep.
There was a 1,5-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weirs above mean sea level.

k/ May differ slightly from sum of pool times as it was taken independent of pool times.

5/ Pool times not taken.

APPENDIX TABLE ll*. --Silver saljnon ascent (time per pool and total time) in a l:l6-6lope
fishwayi/ August I956.

Time

of

day

Length
(inche

2/
5)

Pool time in

minutes

between

weirs ^

Total k/

Date

5U-55

55-56

56-57

57-58

58-59

59-60

time

August

28

10:27 AM

21*

.63

3.35

1.38

2.13

2.1*5

2.23

12.18

11:36 AM

ll*

.12

.22

.20

4.98

3.10

l*.l*6

13.10

August

29

2:27 PM

16

1.73

2.82

.35

2.1*0

1.65

.90

9.87

3:15 PM

22

2.33

1.23

..87

1.37

2.17

.83

8.77

3:2l* PM

22

1.77

.80

.77

1.53

1.10

1.82

7.75

Mean

1.32

1.68

.71

2.1*8

2.09

2.05

10.33

1/ This was a 6-pool fishway with pools 16 feet long, 11.5 feet wide, and 6.3 feet deep.
There was a 1.0-foot rise between pools.

2/ Length of fish was estimated.

3/ Weir numbers are based on elevation of weirs above mean sea level.

k/ May differ slightly from sum of pool times as it was taken independent of pool times.

23

MBL WHOl Librai

5 WHSE 01478