Fish Entrainment at the Lower Yellowstone …...I L L Fish Entrainment at the Lower Yellowstone Diversion Dam, Intake Canal, Montana 1996 -1998 Preparedby: Steve Hiebert, Rick Wydoski

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Fish Entrainment at the Lower Yellowstone Diversion Dam,Intake Canal, Montana

1996 -1998

Prepared by:

Steve Hiebert, Rick Wydoski and Tom Parks

u.S. Department of Interior Prepared in Cooperation:Bureau of Reclamation Montana Fish, Wildlife, and ParksDenver Office andMontana Area Office Lower Yellowstone Irrigation Project

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April 2000

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EXECUTIVE SUMMARY

This study, conducted from 1996 to 1998, estimates fish entrainment into the IntakeIrrigation Canal (Intak~ Canal), Montana, and provides baseline fishery data on the LowerYellowstone River. This information is critical for any future canal headwork modifications.

Initially nets were designed in 1996 specific for the study site, and sampling of fishentering the canal at the headworks began in June 1996. More intense sampling occurred in1997 with frequent netting over the irrigation season and for eight 24-hour periods. In 1998, dataon all species were collected over the irrigation season, but maintaining live collection ofsturgeon chub was emphasized. The sturgeon chub were used for reintroduction in native watersand as brood stock for culture facilities. Debris entrained was frequently quantified during 1996and 1997, and is available for incorporation into possible future screen designs and debrishandling equipment. .

The Intake Canal is unscreened, and relatively large flows from the Yellowstone Riverinto the canal exceed 1550 cfs from mid-May to mid-September. The diversion is controlledthrough 11 sluice condUits, and fish enter these because they are unscreened. Potentiallysignificant fish entraintnent from the Yellowstone River had not been estimated. This studyprovides those importall1t values. Estimates were obtained by collecting all fish from 2 to 4 of the11 conduits with fyke lIlets set in the flows. During 1996, netting techniques were tested andrefined using two condJuits. Over the irrigation season in 1997, a total of 8,374 fish was netted.Included in this 1997 sampling were 8 days of24 hour sampling, as well as a tagging programwhere 975 netted fish received Floy tags and were returned to the canal. The fish were tagged todetermine recapture fattors for more accurate entrainment estimates. Thirty-four species weresampled; 25 were native species. Native species-stonecat, flathead chub, sturgeon chub,goldeye and sauger---oomprised the highest numbers collected. Average entrainment in 1996and 1997 was 1.75 and 0.99 fish per acre-foot, respectively. Entrainment rates of individualspecies varied with month, time of day, and turbidity, over the irrigation season when withentrainment flows into' the canal were relatively constant. Diel differences in entrainment formany of the native fish were most pronounced later in the irrigation season when river clarityincreased.

The 1998 entrainment netting collected 4,529 fish which included 744 sturgeon chub.About 400 of these sturgeon chub were transported live to restocking or culture facilities. Saugerwere the most frequent species encountered. Surprisingly, shovelnose sturgeon accounted for anoticeable high perceIlltage (8 percent) offish in 1998.

Estimates oftol\:al entrained fish were extrapolated from monthly average entrainmentrates summarized ovet the irrigation season. The total estimated number of entrained fish in

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1996 was 537,459 ± 198,908. Estimates of total fish entrained in 1997 and 1998 were 382,609± 24,487and 809,820 ± 154,000, respectively. The Lower Yellowstone River appears to be ahighly productive system, in spite of entrainment at Intake Canal and other irrigation facilities.Fish numbers in the river remain large.

Reducing the entrainment of fish into Intake Canal could be accomplished by one or moreof the following:

.. Relocating the intakle area away from the shore toward the center ofthe river.

.. Placing louvers and positive barrier screens either in the river at the Intake headworks orwithin the canal... Installing a device to move upstream migrating fish away from the bankline and the headwork

mouth of Intake.

Screening within the river, proximate to the Intake Canal headworks, should be modularand designed for seasonal removal to avoid winter ice damage. Effective within-canal screeningmust include a by-pass system to return fish to the river and be designed to minimize predation.Other techniques, such as sound, lights, or electricity -singly or in combination with othermethods- could guide fish away from the canal and reduce entrainment.

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Table of Contents

EXECUTIVE SUMMARY i

INTRODUCTION .. ~ 7

METHODS AND MA):'ERIALS 8

1996 RESULTS " 13

1997 RESULTS 17Monthly entrainment 201997 Tagging results 23Turbidity .. 24River Flows 25Individual Fish Species Results - 1997 26

1998 RESULTS 40

DISCUSSION 47Fish Entrainment and Yellowstone River Flows 49Fish Entrainm~ntReduction 53

ACKNOWLEDGMENTS 55

LITERATURE CITEn 56

APPENDIX 57

Tables

Table 1 List of fishes Collected at Intake Diversion, Montana (1996, 1997, and 1998) .... 12

Table 2 Estimated entrainment rates of all species collected in1996 at Intake Canal. Rates arein fish per acre-foot with the standard error of the daily mean in parenthesis. The lastrow represents estimates of the monthly total acre feet passed into the Intake Canalusing staffgauge readings in the canal " 15

Table 3 Summarized length and weight measurements of fish from1997, Intake Canal. .. 19

Table 4 Estimated entrainment rates (fish per acre-foot ± one standard error of the mean) fromfish collected in 1997 at Intake Canal. The last row provides monthly estimates oftotal acre feet passed into the Intake Canal 21

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Table 5 Percentageoftagged fish re-collected at each net during 1997. . 23

Table 6 Estimated entrainment rates (fish per acre-foot ± one standard error of the mean) fromfish collected in 1998 at Intake CanaL The last row provides monthly estimates oftotal acre feet passed into the Intake CanaL 42

Figures

Figure 1 Schematic of netting apparatus and cable guide placement Intake Canal, Montanaused over 1996-1998 9

Figure 2 Percent composition of the fish collected with entrainment nets in the Intake Canal,1996 13

Figure 3 Percent composition of the 6 dominant fish and other fish collected with entrainmentnets at Intake Canal 1996 16

Figure 4 Species composition of the collected entrained fish during the entire 1997 irrigationseason, Intake Canal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Figure 5 Species composition of fish collected from Intake Canal, 1997 18

Figure 6 Results of fish collected with entrainment nets, tagged, and released back into IntakeCanal durimg the 1997 irrigation season 24

Figure 7 Flows in the Yellowstone River at Sidney, Montana from May 15 to September 30,1996,1997 and 1998 26

Figure 8 Length-weight relationship and length frequency of stonecat collected in 1997 in theIntake Canal 27

Figure 9 Length-weight relationship and length frequency of flathead chub collected in 1997 inthe Intake Canal 28

Figure 10 Length-weight relationship and length frequency of sturgeon chub collected in 1997in the Intake Canal. . 39

Figure 11 Length-weight relationship and length frequency of goldeye collected in 1997 in theIntake Canal. 3°

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Figure 12 Length-weight relationship and length frequency of sauger collected in 1997 in theIntake Canal 31

Figure 13 Length-weight relationship and length frequency oflongnose dace collected in 1997in the Intake Canal 32

Figure 14 Western SiJvery Minnow and Eastern Plains Silvery Minnow grouped together andtheir length~weightrelationship and length frequency collected in 1997 from theIntake Canal 33

Figure 15 Longnose sucker length-weight relationship and length frequency collected in 1997 inthe Intake Canal 34

Figure 16 Carp length-weight relationship and length frequency from fish collected in 1997 atthe Intake Canal, Montana 35

Figure 17 Length-weight relationship and length frequency of drum collected in 1997 in theIntake Canal 36

Figure 18 Length-weight relationship and length frequency of channel catfish collected in 1997in the Intake Canal 37

Figure 19 Length-weight relationship and length frequency of river carpsucker collected in 1997in the Intake Canal 39

Figure 20 Species composition of the fish collected with entrainment nets at Intake Canal,Montana, 1998. . 41

Figure 21 The relative percentage offish collected by night and day from June 1998 in theIntake Canal, Montana.. . 44

Figure 22 Estimated total numbers of sturgeon chub entrained by month over the1998 irrigationyear 46

Figure 23 Estimated total numbers of sauger entrained by month over the1998 irrigation year 46

Figure 24 Total fish entrainment estimates for 1996 and 1997 calculated monthly from averageddaily entrainment rates and Intake canal flows.. . 48

Figure 25 Total fish entrainment estimates for 1998 calculated monthly from averaged dailyentrainmeIllt rates and Intake canal flows 49

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Figure 26 Daily Yellowstone River flows at the Sidney, Montana monitoring gauge from May15 to September 30 in 1996,1997,1998, and 1999 50

Figure 27 The relationship between the average daily Yellowstone River flows (Sidney gauge)each year and the corresponding average total fish entrainment rate at the IntakeCanal from May 15 to September 15 for 1996, 1997, 1998, and 1999 51

Figure 28 The relationship between the average daily Yellowstone River flows (Sidney gauge)each year and the corresponding average total sturgeon chub entrainment rate at theIntake Canal from May 15 to September 15 for 1996, 1997, 1998, and 1999 52

Figure 29 The relationship between the average daily Yellowstone River flows (Sidney gauge)~ach year and the corresponding average total sauger entrainment rate at the IntakeCanal from May 15 to September 15 for 1996, 1997, 1998, and 1999 53

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Fish Entrainment at the Lower Yellowstone Diversion Dam,Intake Canal, Montana 1

1996 1997 1998

S. HiebertR. WydoskiT. Parks

Introduction

Water for irrigation is diverted from the Yellowstone River into the Intake Irrigation

Canal (Intake Canal), at the Lower Yellowstone Diversion Dam, located about 18 miles

downstream from Glendive, Montana. The diversion dam and Intake Canal headworks have

been in place for almost a century (i.e., constructed from 1905 to 1907).

Several years of anecdotal information from fisherman and farmers has indicated highly

desirable game fish are routinely found in the canal, and any fish in the canal could be

transported to the irrigated fields. Because of these concerns and the lack of verifiable

information, we initiated this investigation in 1996 to estimate the number and density of fish

entrained into the canall and assess any differences over the 4-month irrigation season. The

irrigation season is typically from mid-May through mid-September, and water diverted at Intake

and utilized through about 225 miles of canals and laterals. Federal, State, and irrigation

managers can use these study data to develop management practices which optimize water

delivery and reduce fish entrainment.

This report presents results of data colleCted June 11 to September 19, 1996; May 21 to

lThis investigaJtion is part of a comprehensive Lower Yellowstone River study designedto collect information on all irrigation demands of the river and fish passage information fromother low-head dams downstream ofBillings, Montana.

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September 11, 1997; and May 20 through September 10, 1998. The 1996 sampling season was

originally designated for equipment setup and design of sampling logistics; sampling occurred

only 10 to 14 days each month. The equipment initially worked well and nets collected many

fish and the 1996 data is included in this report. Data are of good quality and provides accurate

trends and estimates. Data were collected in 1997 in 2-week periods with 1 week breaks

between periods throughout the irrigation season. Data collection in 1998 occurred 14 to 20 days

each month with most sampling covering the crepuscular period. Results relate to fish entrained

in the canal and may not reflect similar species densities or similar compositions as those in the

river. Recommendati6ns and additional studies are located in the Discussion Section.

METHODS and MATERIALS

A netting system was designed to collect fish immediately after entrainment through the

control sluice gates in :order to accurately record entrainment data. Figure 1 presents a cross

section through the Intake headworks with the net frame lowering system and guides in place.

The control gates and sluices are 5 feet in diameter with 11 gates across the headworks. The

nets are attached to 'l2~inch steel guide cables secured to the base of the canal side of the

headworks below the sluice opening. The above-water portion of the guide cables is connected

to a frame structure with turnbuckles which allow tightening of the cables to make a taut guide.

Each sluice sampled had cables mounted as described. The guide frames were bolted to the

upper deck of the headworks and had a hand winch lifting cable in the center. The lifting cable

was attached to the center ofthe net frame and the lifting frame allowed the net to nearly clear

the base ofthe deck; so the net could be inspected and repaired easily.

The square (6 feet sides) net frames have hollow grips that clamp to the steel guide cables

on each side approximately 3 inches from the net frame. The nets were 'l2-inch delta heavy duty

mesh with an 8-inch rubberized chafe collar that was sandwiched between

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RIVER

Appr~u:iItlAle

MIlllimlEm w~~~ D.

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N-rtJ:ifljngapPUlltDS ~~---"'I

S~mpl111g n~t

INTAKE CANAL.t-%:o..F(.......·..-,,~.. ".III".:·,'.:"~'•."O<. := "_'t, ~ •Ci: ;{j', ...,.-""';;;;;=====1- 'no . ".,0, 'CJ~

I' • ..., ... _,0 •:-., •. "r---~-----_-":_~---lOJ • '.,.' >r.~

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Figure 1 Schematic ofnetting apparatus and cable guide placement at Intake Canal, Montana,

1996-1998.

a steel band and the net frame and bolted. The mouth was held open at all times by the net

frame with the inflow filling the net. The nets has a choker four feet before the cod end to use

when lifting the net. the cod end (3/16-inch ace mesh) ofthe net was 24 inches long fitted with

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a 20 inch zipper for removal of contents. The nets were lifted from flowing water to prevent fish

swimming out of the nets. Duration ofnet set was determined by debris loading but generally

the nets were set for one hour. Over the irrigation season in 1997, systematic sampling for 2

weeks on (8 to 10 hours a day) and 1 week offwas employed. Also in 1997, diel fish

entrainment was assessed by sampling hourly for 8 days. Cod end live collection containers

were designed and built for use in 1998. These were inserted into the cod end net bag and

contained a baffle system that provided a low flow refuge for all but the largest fish.

Netted fish were identified to species, weighed and measured. Some were tagged in

1997. All fish, except blue suckers and shovelnose sturgeon, were released back into the canal.

Length-weight relationships were calculated from the 20 most common species from fish where

both total length and weight data were recorded. Length frequency of the same group of fish is

also presented. Table 1 presents a list of fish species collected over the three years. Smaller fish

could pass through the net mesh of~ inch and consequently the fish netted were primarily over

30 mm total length. &mall fish were cC?llected in the nets, but most likely in numbers under

representing their actual entrainment. Fish not identified in the field were preserved and

identified positively in the lab.

Rates of entrainment were calculated using the proportion of canal flow each net

sampled and determirting fish per acre-foot rate for each net set by species. Individual gate

positions and daily canal flows were recorded and used for each net's individual entrainment

rate. The three step extrapolation procedure to obtain fish entrainment estimates per month was:

a) Divide the numberof fish collected by the volume ofwater sampled (acre-feet) for each nets

sampling b) Average :each days netting to fish per acre/foot by day and month c) Multiply

monthly average rates per species by the canal inflow over each month for an estimate of fish

entrained per month. The monthly entrainment rates include a recapture factor. The recapture

factor (See following) was usually around 0.95 and was multiplied times the entrainment rate. In

addition, the monthly: entrainment rates include a standard error of the mean. The raw data from

each net is provided in Appendix A, B, and C corresponding to 1996, 1997, and 1998.

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A tapered gap between the upper portion of the net mouth and the concrete wall ofthe

headworks allowed fisll to enter and be re-captured. This tapered gap varied from no gap at the

bottom of the net to about 14 inches at the top of the net. This gap potentially could also have

been an escape avenue, if the entrained fish was able to work its way up through high inflow

current. In 1997, about 976 fish were tagged (i.e., Floy spaghetti tags inserted between or behind

the dorsal rays) to identify fish recaptured in the nets and released in the canal. Fish that were

tagged were limited to larger (>125 mm total length) life stages and species. Tagging results

provided a recapture factor for certain species and information on residence time of certain

species in the proximate area of the canal headworks.

The Yellowstone River stage height was recorded twice each day by the Lower

Yellowstone Irrigation Project personnel and turbidity was monitored (i.e., Hach Inc., Model

1800 turbidimeter) when the nets were fished. All gate positions were recorded daily to estimate

for distribution ofwater in the netted sluice ways. Each of the four nets sampled between 3.5

and 9.6% of the total canal diverted water, almost 40% of the flow was sampled at times. Field

corrections to the flow: data were made through out the study. For example quantitative flow

estimates were made when a gate became restricted with logs and other other debris. Turbidity

was recorded in NTU's (Nephelometric Turbidity Units) and serial dilutions with turbidity-free

water were performed when the river turbidity exceeded the range of the turbidimeter.

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~ ,Table 1. List of fishes collected at Intake Diversion, Montana (1996, 1997, and 1998)

Common name Scientific name Family Native

Goldeye Hiodon alosoides Hiodontidae xShove1nose Sturgeon Scaphirynchus platorynchus Acipenseridae xCommon Carp Cyprinus carpio CyprinidaeWestern Silvery/Plains Minnow*I Hybognathus argyritis/placitus Cyprinidae xBrassy Minnow Hybognathus hankinsonidae Cyprinidae xSturgeon Chub Macrhybopsis gelida Cyprinidae xSicklefin Chub* Macrhybopsis meeki Cyprinidae x~merald Shiner Notropis atherinoides Cyprinidae xSpottail Shiner Notropis hudsonius CyprinidaeFathead Minnow* Pimephales promelas Cyprinidae xLongnose Dace Rhinichthys cataractae Cyprinidae xCreekChub* Semotilus atromaculatus Cyprinidae xFlathead Chub Platygobio gracilis Cyprinidae x

River Carpsucker Carpiodes carpio Catostomidae xLongnose Sucker Catastomus catostomus Catostomidae xWhite Sucker Catostomus commersoni Catostomidae xBlue Sucker Cycleptus elongatus Catostomidae xSmallmouth Buffalo letiobus bubalus Catostomidae xBigmouth Buffalo Ictiobus cyprineUa Catostomidae xShorthead Redhorse Moxostoma macrolepidotum Catostomidae x

Black Bullhead Ameiurus melas IctaluridaeChannel Catfish letalurus punctatus Ictaluridae xStonecat Noturus flavus Ictaluridae xPaddlefish @ Polydon spathula Polyodontidae x

Northern Pike Esox lucius ~socidae

Rainbow Trout* Oncorhymchus mykiss SalmonidaeBrown Trout* Salmo trutta SalmonidaeMountain Whitefish* Prosopium williamsoni Salmonidae xCisco @ Coregonus artedii SalmonidaeBurbot Lota Iota Gadidae xBrook Stickleback* Culaea inconstans Gasterosteidae xGreen Sunfish Lepomis cyanellus CentrarchidaeWhite Crappie Pomoxis annularis CentrarchidaeSauger Stizostedion canadense Percidae xWalleye Stizostedion vitreum PercidaeFreshwater Drum Aplodinotus grunniens Sciaenidae x

* only collected in 1997/ may have been identified as flathead chub in 1996

@ only collected in 1998

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1996 Results

In 1996, two nets collected 2931 fish representing 27 species. Flathead chub (Figure 2)

made up the largest percentage, followed by stonecats and sturgeon chub. Sauger and channel

catfish were the only two game fish commonly encountered (14.4 and 10.5 percent respectively,

Figure 2). Sauger we~e collected primarily during July and August- their highest entrainment

rate on August 10th. Iptake canal flows were relatively constant near 1350 cfs (cubic feet per

second) while the river stage fluctuated over the season.

1996 SPECIES COMPOSITON· LOWER YELLOWSTONE IRRIGATION CANAL

ENTIRE IRRIGATION SEASON

n = 2931

FLAT23.8%

STONECAT__- 18.0%

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CHANNEL CArFISH10.5% //

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OTHERS9.8%

"-DRUr.h

"-5.0% ""

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LONGNOSE DACE

MISCELLANEOUS

WALLEYEBLACK BULLHEADBRASSY MINNOWWiITE SUCKERBLUE SUCKERBLACK CRAPPIEGREEN SUNFISHNORTHERN PIKESMALLMOUTH BASSEMERALD SHINERSPOTTAIL SHINER

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Figure 2 Percent composition of fish collected with entrainment nets in the Intake Canal,1996.

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Differences we;re noted between catche~ by the two nets; east net (furthest down stream

along the face of the headworks) averaged about two times more fish. Shovelnose sturgeon were

the only species collected most in the west net. Total fish entrainment averaged 1.75 fish per

acre-foot. This calculation was derived from averaging the rates between both nets over the

entire 1996 sampling Season. Table 2 presents the monthly average entrainment rate calculated

for each species of fish collected and the estimated water passing into the canal.

Over the 1996 irrigation season, the species composition changed. Figure 3 provides

composition difference:s for the six most common species (stonecat, channel catfish, flathead

chub, goldeye, sturgeon chub, and sauger) and others. The dominant fish by month were

stonecats in June, sauger in July, flathead chub and sturgeon chub in August, and channel catfish

and others in September.

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Table 2. Estimated enJt:rainment rates of all species collected in 1996 at Intake Canal. Rates arein fish per acre-foot with the standard error of the daily mean in parentheses. The last rowrepresents estimates of the monthly total acre feet passed into Intake Canal from staff gaugereadings in the canal.

Species June July August September

Stonecat 1.468 (±O .407) 0.0159 (±0.O122) 0.0418(±0.0414) 0.250(±0.169)

Flathead chub 0.522(±0.117) 0.144(±0.009) 0.401(±0.104) 0.138(±0.042)

Sturgeon chub 0.270(±0.089) 0.0215(±0.0165) 0.363(±0.378) 0.009(±0.004)

Goldeye 0.521(±0.120) 0.088(±0.002) 0.030(±0.0177) 0.0217(±0.0074)

Sauger 0.O36(±0.018) 0.589(±0.031) 0.362(±0.058) 0.0411(±0.0294)

Longnose Dace 0.O244(±0.0105) 0.0 0.102(0.059) 0.029(±0.0120

Longnose Sucker 0.O32(±0.010) 0.0 0.0146(0.0042) 0.0149(±0.009)

Carp 0.O142(±0.0097) 0 0.0014(0.0011) 0.020(±0.008),

Drum 0 0.137(±0.025) 0.129(±0.0189) 0.0187(±0.005)

Channel Catfish 0.O09(±0.014) 0.300(±0.104) 0.0268(±0.0137) 0.415(±0.259)

Bigmouth Buffalo 0.003(±0.001) 0.0734(±0.003) 0.002(±0.0032) 0

Burbot 0,154(±0.035) 0 0.0011(±0.001) 0.017(±0.007)

River Carpsucker 0 0 0.003(±.001) 0.019(±0.0102)

Shovelnose sturgeon 0.005(±0.004) 0 0.008(±0.003) 0.020(±0.008)

Walleye 0' 0 0.004(±0.003) 0.002(±0.001)

White Sucker O,O05(±0.002) 0 0.0018(±0.001) 0

Shorthead Redhorse 0, 0.017(.006) 0.037(±0.009) 0.009(±0.005)

Emerald Shiner 0' 0 0.007(±.003) 0

BrassyMinnow 0.015(±0.011) 0 0.005(±0.002) 0

Black Crappie 0.005(±0.005) 0 0.001 (±0.0008) 0.007(±0.004)

Green Sunfish U 0 0.001(±0.001) 0.004(±.003)

Smallmouth bass 0: 0 0 0.001(±.001)

Northern pike 0 0 0.001 (±O.0007) 0.001 (±.0007)

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1996 SPECIES COMPOSITION

LOWER YELLOWSTONE IRRIGATION CANAL

0.31%

17.81%

20.48%

JUNE

9.23%

1.09% .

, 8.59%17.19% AUGUST

1.84%2.45%

JULY

Fi!JSTONECAT _CHANNEL CATFISH EZIFLATHEAD CHUB IIIIIGOLDEYE IiIIIIIISTURGEON CHUBI!!!ISAUGER DOTHERS

Species June July August September

Unidentified small 0 0 O.O38(±.O40) O.171(±O.O93)

Spottail Shiner 0, 0 O.OO2(±O.OO1) O.OO4(±O.OO2)

Black Bullhead 0 0 0.0007(±.008) 0

Total Fish 3.095 (±0.262) 1.388 (±0.302) 1.586 (±0.221) 1.218 (±0.255)

Monthly 74,443 81,843 82,409 51,394

Estimated acre-

feet J

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Figure 3. Percent composition of the six dominant fish and other fish collected withentrainment nets at Intake Canal 1996.

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1997 SPECIES COMPOSITON· LOWER YELLOWSTONE IRRIGATION CANAL

ENTIRE IRRIGATION SEASONn =7980

STONECAT39.5%

GOLDE8.5%

Wi L%WnW8tniiiii'H@) BLUE SUCKER 0.5%

CARP 1.5%

BIGMOUTH BUFFALQ 0.8".1.

CHANNEL CATFISH 1.2%

DRUM 1.2%

BURBOT 0.7%0.11%

RIVER CARPSUCKERSHOVELNOSE STURGEON

0.5%

MISCELLANEOUS 1.9%

STURGEON CHUB12.7%

WALLEYEBLACK BULLHEADBRASSY MINNOWFATHEAD MINNOWWHITE SUCKERSMALLMOUTH BUFFALOSHORTHEAD REDHORSERAINBOWTROUTBROWN TROUT

'M-lITE CRAPPIEGREEN SUNFISHNORTHERN PIKEMOUNTAIN WHITEFISHSICKLEFIN CHUBCREEK CHUBEMERALD SHINERSP01TAIL SHINERBROOK STICKLEBACK

1997 Results

There were 34 species collected in 1997 from May 21 through September 11 with four or

fewer nets sampling the Intake Canal at a time. Of the total 7,980 fish collected, 39.5 % were

stonecat. Other fish collected in relatively high numbers include flathead chub (16.7%),

.sturgeon chub (12.7%), goldeye (8.5%), and sauger (6.2%). A daily average entrainment rate of

0.99 fish per acre-foot was calculated for the entire irrigation season. Species composition,

presented in Figure 4, shows the great diversity of fish entrained.

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Figure 4. Species composition of the entrained fish collected during the entire 1997 irrigationseason, Intake Canal

Over the 1997 irrigation season, the species composition changed and these changes are shown in

Figure 5 for the five most common species (stonecat, flathead chub, goldeye, sturgeon chub, and

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1997 SPECIES COMPOSITION

LOWER YELLOWSTONE IRRIGATION CANAL

0.56%5.77%

MAY

AUGUST

JUNE0.15%

JULY

SEPTEMBER

Ei1JSTONECAT BlSAUGER ~FLATHEAD CHUB

• STURGEON CHUB IIIGOLDEYE DOTHERS

'-sauger) and all others grouped into one. Stonecat were the dominant fish in June, sauger in July,

flathead chub and sturgeon chub in August, and flathead chub the dominant species in September.

Figure 5. Species composition offish collected from Intake Canal, 1997

Table 3 surrulnarizes the lengths and weights ofmost of the species of entrained fish from

1997. Not all fish were weighed and therefore the number offish weighed (Table 3) is usually

less than the number measured.

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Table 3. Summarizedllength and weight measurements offish from1997, Intake Canal.

F IS H COL LEe TED FRO M SIEVE NET SAT IN TAKED IV ERS 10 N I 1 997

, TOT ALL ENG TH (01 01 1 WE IG HT (g)SPECIES

N RANGE MEAI\I II RA IJ GE MEAN

STOIHCAT 3134 30·224 129 4I 2 1·138 25

FLATHEAD CHUB 1327 32·282 147 1111 1·202 35

STURGEON CHUB 984 32-93 69 819 0.3-7.3 2.4GOLDEYE 673 36·405 309 615 0.1·450 238SAUGER 493 42·544 309 473 1-983 '"~..:..:.

LOt·IGNOSE DACE I 241 34·95 63 125 0.2·8.3 2.5

WESTERi] SILVERY MIIHIOW 227 30·120 72 139 0.1·137 3.4Lor··IGI;JOSE SUCKER I 45 45·405 304 I 16 0.4·698 359CARP 121 2 1-6 72 313 96 0.5·4070 999DRUM 98 65·446 271 98 I -I 094 254CHAf'JtH L CATF IS H 94 50·621 256 86 1·2350 2 I 6

BIGMOUTH BUFFALO 65 61)·69 I 99 18 O. I ·4265 463,BURBOT 61 80·4 46 219 27 3·370 7 I

RIV ERCA RPSUCKl! R 59 41·5 27 239 34 3-2060 821

SHOVEUJOSE STURGEON 44 390-923 634 44 86-2740 850BLUE SUCKER 41 305·851 632 36 248-4080 201 I

'N HIT E SUCKER 25 30-433 235 13 4-530 286

SHORTHEAD RED H' 0 RSE 22 5 1·370 187 19 1·560 152

CREEK CHUB 2I 23 -124 79 I 4 1·18 7

EMERALD SH IIHR . t 7 42-95 57 I 4 0.5·2.9 I .4

BRASSY MINNO'N 10 46-120 71 0

RAllaO'N TROUT 9 201 ·5 t 8 353 4 I 110·1 120 \ t 18

'NALLEYE 9 266·370 327, 8 154·900 345

SMALLMOUTH BUF'FALO 6 275-640 493 5 290·2940 t 84IBROOK STICKLEBACK 4 32·39 37 2 0.2·0.4 0.3

WHITE CRAP PIE 4 3 4-I 23 87 1 .:..:.

BLACK BULLEAD I"

3 t 25·191 1I) 3 I 102

NORTHERil PIK E 3 383-580 504 3 308-1005 796BROWN TROUT 2 169·494 332 1 1070

SICKLEFIII CHUB 2 95·102 100 2 6· to 8 ')

FATHEAD MII\J NOW 2 28·45 37 0

SPOT TAIL SHIIJ ER 1 84 I 3.9GREEN SUIHISH 1 39 t 1.1

M0 UIn A IN 'N HITE ~ IS H I 100 1 7.4

19

'--'

Monthly Entrainment

The daily average entrainment was calculated for each collection period and averaged by

month for each species, similar to 1996. Table 4 lists monthly rates of entrainment for each

species. This rate multiplied by the monthly acre feet in the canal estimates entrained fish

numbers. These numbers should not be used for extrapolation to riverine population estimations.

Fish densities in the diversion dam area and near the shore line are unnaturally high and most

likely not representative of those in the river. May and September canal flows (acre-feet) take

into account less than afull month of irrigation water in the canal.

!~

'--

20

II....-"

.i'-

,,

L

Table 4. Estimated entrainment rates (fish per acre-foot ± one standard error of the mean) fromfish collected in 1997 at Intake Canal. The last row provides monthly estimates oftota1 acre feetpassed into the Intake Canal.

Species May June July August September

Stonecat 0.497 0.411 0.246 (±0.0559) 0.174 o.002(±0.002)(±0.098) (±0.063) (±0.0403)

Flathead chub 0.040 0.117 0.160 0.267(±0.032) 0.904(±0.509)(±O.008) (±0.0151) (±0.025)

Sturgeon chub 0.0136 0.106 0.125(±0.036) 0.463(±0.123) 0.043(±0.013)(±O.004) (0.0204)

Go1deye 0.015 0.0318 0.120 0.166 0.010(±0.006)(±0.005) (±0.0061) (±0.024) (±0.0221)

Sauger .004(±0.0 .0026 0.045(±0.010) 0.112(±0.040) .067(±0.034)009) (±0.0016)

Longnose Dace .020(±0.0 0.047 0.0365(±0.012) 0.0103(±0.00 004) (±0.007) 4)

Longnose Sucker 0.p18 0.019 0.016(±0.005) 0.009(±0.004) 0(±0.005) (±0.0052)

Carp 0.004 0.017 0.014(±0.0.04) 0.030(±0.008) 0.016(±0.001) (±.003) (±0.005)

Drum 0 0.002(±.002) 0.013(±0.005) 0.018(±0.005) 0.011(±0.007)

Channel Catfish 0 .002(±.002) 0 0 0

Bigmouth 0.001 0.006 0.018(±.008) 0.001(±0.001) 0Buffalo (:±to.0009) (±.002)

Burbot 0.017 0.008 0.004(±0.001) 0.001(±.001) 0(±0.003) (±.002)

River Carpsucker 0.~01O 0.003 0.010(±0.003) 0.002 0.002(±.002)(:1:0.0019) (±0.002) (±0.0015)

Shovelnose sturgeon 0 0.002(±.002) .0007(±.0005) 0.005(±0.002) 0.057(±.040)

Walleye 0.0008 0.0025 0.0009 0.003(±.0023) 0(:1;:0.0008) (0.002) (0.0007)

White Sucker .O08(±.00 .006(±.004) .0003(±.0002) .004(±0.002) 0

21

L

L

Species May June July August September

Shorthead 0.002 0.005 0.002( ±.0008) 0.004(±.002) 0.004(.004)Redhorse (±.001) (±.003)

Emerald Shiner 0 0.002(.002) 0.0072(0.004) .0004(0.0004) 0

Brown Trout 0.0007 0.002 0 0.0008 0(±O.0007) (±0.0016) (±.0008)

Rainbow Trout 0.004 0.002 0 0 0(±0.0019) (±0.002)

White Crappie 0 .002(±.0019) 0 0.0003(.0003) 0

Green Sunfish 0 .002(±.002) .0004(±0.0004) 0 0

Smallmouth 0 .002 ±(.002) .0046(±0.004) 0 0Buffalo

Northern Pike 0 0.0016 .0006(±O.0004) 0 0.003(0.0016) (±0.0029)

Mountain 0 .0016(±.0016) 0 .0012(±0.0012) 0Whitefish

Spottail Shiner 0 .0016(±.0016) O.0004(.0004) 0 0

Sicklefin Chub 0 0.0016 0.001(±0.0008) 0 0(±0.0016)

Creek Chub 0.:0019 0.0032 0.005 0 0(±0.0013) (±0.0019) (±0.0026)

Silvery Minnow .0'1O(±0.001 0.030 0.053 (± 0.017) 0.012(±0.004) 04) (±.007)

Blue Sucker 0~005 0.007 0.008 0.006 0(±0.0018) (±0.0023) (±0.0037) (±0.004)

Fathead Minnow 0 .002(.002) .0004(±0.0004) 0 0

Black Bullhead 0.0003 0.002 0 .0006(±0.OOO6) 0(±0.0003) (±0.0017)

Total Fish 0.678 0.766 0.910(±.096) 1.58(±0.150) 1.16(±0.430)(:!t;0.099) (±O.093)

Monthly 50536 101085 80160 108848 65595Estimated acre-feet

22

\......

L 1997 Tagging Results

In 1997, there were 975 tagged fish netted and returned into the canal; 51 were recovered.

Stonecat represented the fish most tagged and recovered (i.e., 19 recovered out of367 tagged).

For all fish, time until recapture ranged from less than 1 hour to 336 days (two sauger were

recaptured in springI998). This indicates some degree of survival in the canal over winter and/or

recapture of a tagged fish by-passed to the river at a turnout, and then recaptured from the river in

1998. During periods of lower irrigation needs, the Intake Canal does return some water to the

river at Burns Creek about 8 miles down canal and at locations further down.

Tagging results from each net over the season are presented in the Table 5. The nets

represent an upstream to downstream gradient of sluice sampling. This table presents each net

and the corresponding percentage tag returns.

Table 5 Percentage of tagged fish re-collected at each net during 1997.

Blue West Net Yellow West Net Blue East Net Yellow East Net

31% 6% 18% 45%

The most eastwardly l~cated net (yellow east) collected the most recaptures. This net had a large

gyre ofwater behind it in the canal for most of the irrigation season. Its circular flow could have

repositioned entrained fish into the narrow (tapered) space between the net mouth and the

concrete headworks face. Fish were shown to be subject to recapture as an artifact of the tapered

gap between the headworks dam and the net mouth. Therefore, fish were tagged to determine

whether they'were recaptured in nets after release in the canal and, if so, to account for recapture

when estimating entrainment rates. Figure 6 shows the percent of tagged fish recaptured from the

canal by species. Incorporating recaptures provides a more accurate estimate of entrainment when

used with tagged species. As an example, 11% ofthe tagged burbot were recovered, therefore a

factor of 0.89 results, which is multiplied by the estimated burbot entrainment. A value of 0.95

was used for total fish entrainment estimations. This was obtained by calculating the mean of all

tag return factors.

L

I

L

L

23

L

IliP1ilPERCENT I

PERCENT RECAPTURED FROM INTAKE CANAL

SPECIES (# FISH TAGGED)

BURBOT (18)BLACK BULLHEAD (1)

BIGMOUTH BUFFALO (3)BROWN TROUT (1)

CARP (32)CHANNEL CATFISH (24)

FRESI-MIATER DRUM (19)FLATHEAD CHUB (127)

GOLDEYE (137)LONGNOSEE SUCKER (73)

NORTHERN PIKE (1)RIVER CARPSUCKER (12)

STONECAT (367)SAUGER (95)

SMALLMOUTH BUFFALO (5)WALLEYE (4) .

WHrrlE SUCKER (11)

TOTAL (957)

o 5 10 15 20 25 30

L

L

Figure 6. Results of fish collected with entrainment nets, tagged, and released back into IntakeCanal during the 1997 irrigation season.

Turbidity

Turbidities varied over the irrigation season, and exceeded highest values on the turbidity

24

meter. Highest average turbidities were in June, and all exceeded the 1000 NTU (Nephelometric

Turbidity Unit) maximum value ofthe meter. Appropriate dilutions were made to allow meter

readings, and turbidities of 1230 to 2600 NTU were estimated. Average turbidity during the

sampling in May was 156 NTU, in July was 338 NTU, in August was 596 NTU, and in

September was 25 NTU.-

River Flows

The Yellowstome River generally peaked in June at Intake Dam in 1996, 1997, and 1998

had a protracted runoff and peak flows in July. In 1997, peak flows reached nearly 90,000 cfs. A

gap in the 1997 flow data occurred during the rising spring flows because high water and debris

disabled the gauge station. Low spring flows in 1998 resulted in a low water year. Figure 7

presents the flows over the irrigation season for the three years. In all years sampled, flows in the

river decreased to base flow- 6500 to 8000 cfs- by the end of September.

25

FLOWS IN THE YELLOWSTONE RIVERUSGS GAGING STATION, SIDNEY, MT

1996 - 1998100000

C80000:z

0(.)WU)

a::: 60000wD..~WW 40000LL(.)

iii:::::)(.) 20000

0

~ .....~~ ~~~ 'S

-1996-1997-1998

i~

L

]I'--

Figure 7 Flows in the Yellowstone River at Sidney, Montana, from May 15 to September 30,

1996, 1991, and 1998.

Individual Species Results - 1997

Stonecat weJfe the most numerous fish netted in 1997. A total of 3,134 were

sampled, primarily iin May, June, and July. Mean stonecat total length (TL) was 129 romL

26

STONECAT

200r----------------,180 LENGTH·WEIGHT RELATIONSHIP

160

140 log(y) = 3.129(1og(x)) - 5.137

§ 120 r2=0.953

!i: 100 n =412~ 80W:i: 60

4020o

o 50 100 150 200 250 300TOTAL LENGTH (mm)

TOTAL LENGTH FREQUENCY400

350::ctn 300ii:~ 250

ffi 200m::E 150;:)

Z 100

50

oL_.---l!••o 50 100 150 200 250TOTAL LENGTH (5 mm INCREMENTS)

L

(range 36 and 224 mm TL). A length-weight relationship oflog(y) = 3.129(log(x)) -

5.137 was derived from 412 fish with a r = 0.953 (Figure 8). Highest concentrations of

stonecat occurred between 2000 and 0400 hours during the diel collections, and the

greatest day/night difference was observed later in the season.

L

L

L

Figure 8 Length-weight relationship and length frequency of stonecat collected in 1997in the Intake Canal.

Flathead chub were frequently collected (1,327 total, total length 32 to 282 mm

TL) in 1997. Figure 9 provides length-frequency relationship and length frequency.,L-:

i~ 27

FLATHEAD CHUB

300,.--- ...,

LENGTH·WEIGHT RELATIONSHIPS250

_ 200

S!i: 150

C!liii 100

::50

log(y) .. 3.036(log(x»-5.128

r2 .. 0.972

n=1111

o 50 100 150 200 250 300 350

TOTAL LENGTH (mm)

TOTAL LENGTH FREQUENCY

100 200 300

TOTAL LENGTH (10 mm INCREMENTS)

40

20

o+--_o

200r---------------,

180

:z: 160

~ 140

~ 120

0::: 100WlD 80:s:::l 60Z

LFlathead chub entraihment rates increased over the season with a peak daily average

occurring on Septem.ber 11 of 1.918 fish/acre foot.L

L

LFigure 9 Length-weight relationship and length frequency of flathead chub collected in

. 1997 in the Intake Canal

Sturgeon chub were frequently collected, with 1008 collected in 1997. Sturgeon

chub TL ranged froIl1132 to 93 mm with most of the individuals in the 68 to 73 mm range.

A length-weight regll"ession (n=819) oflog(y) = 2.90(log(x)) -4.98 with a ~ of 0.861 was

calculated (Figure 10). Average entrainment over the season was 0.191 fish per acre-foot

and highest daily average entrainment rate was August 7 at 1.29 fish per acre foot. In diel

entrainment tests mIDst noticeable day versus night differences occurred with clearer water.

In the August diel samples with the clearer water, few sturgeon chub were collected during

28

STURGEON CHUB

8 LENGTH·WEIGHT RELATIONSHIPS

o

log(y) =2.901 (Iog(x» • 4.980

r2= 0.861

n =819


20 40 60 80 100 120 140


o 20 40 60 80 100 120

TOTAL LENGTH (mm)

220r------------..,200180

~ 160ii: 140II.o 120

In 100m 80

~ 60Z 40

20

O+---....-~

o

the daylight and highest collections were between 2100 and 0400 hours. At other times of

the year when the turbidity was> 200 NTU, day and night entrainment was similar with

slightly higher entrainment rates sometimes at night.

L

,

'-

L

L

Figure 10 Length-weight relationship and length frequency of sturgeon chub collected in1997 in the Intake Canal.

Goldeye dJiel collections had no clear pattern except that lowest rates of

collection occurred at night. The greatest number of goldeye were collected in July with

the highest daily average entrainment rate of 0.375 fish per acre foot on July 12. Goldeye

collected were in a size range between 36-405 mm TL with an average of 309mm TL and

29

GOLDEYE

600...---------------__.LENGTH·WEIGHT RELATIONSHIP

500

.-. 400Si!: 300

:t!)

iii 2003:

100

o

log(y) =3.015(log(x» • 5.153

r2= 0.959

n =615 ..

o 100 200 300 400TOTAL LENGTH (mm)

500


100 200 300 400 500


200...------------------.

180

::I: 160

~ 140LI.

~ 120

~ 100wm 80:e:;) 60Z

40 .

20

o~.............................-~.....w1lWllJlo

:L

an average weight of 238 grams.

IiL-

iIL-

L

iI

'-

,L-

L

Figure 11 Length-weight relationship and length frequency of goldeye collected in 1997in the Irttake Canal.

Four hundred ninety three sauger were sampled ranging from 42 to 544 mm

TL(mean total length =309 mm). The length-weight relationship (n=615,r =0.947) is

shown in Figure12. Highest rates of collection were in August when water was clearing.

30

SAUGER

LENGTH-WEIGHT RELATION,.SHIP

log(y) = 2.774(log(x)) • 4.597

r2= 0.947n=474

, i , S iii

100 200 300 400 500 600 700

TOTAL LENGTH (mm)

70 -r-------------------,60


100 200 300 400 500 600


o+-........--r"---..........o

::J:~ 50u.

~ 40D::~ 30

.:Ei 20

10

The highest daily average entrainment rate of 0.398 sauger per acre foot occurred on

August 19. No definite pattern was noted in diel sampling except highest entrainment

occurred at night during August.

L

iL

r

L

L

Figure 12 Length-eight relationship and length frequency of sauger collected in 1997 inthe Intake Canal.

Longnose dace were collected all season (total= 241) with a peak of 0.116

longnose dace per acre foot on July 11. Longnose dace averaged 67 rom, ranging from 38

to 110 rom TL. A length weight relationship (r= 0.836) is calculated and presented in

r

L

31

LONGNOSE DACE

10.....-----------------,LENGTH·WEIGHT RELATIONSHIP

8

§ 6l-E 4iii3: 2

o

log(y) =2.934(log(x)) - 4.941

,2= 0.836n= 125

---~.

o 20 40 60 80

TOTAL LENGTH

100 120


~ 40 ~ ~ 100 UO 140


80....------ ---,

70

~ 60ii:lL. 50o0::40w!! 30

~ 20

10

O-!---...--Jilll.o

Figure 13.

, ,

w

I,L.

!......

!!......

Figure 13 Length-weight relationship and length frequency oflongnose dace collected in1997 in the Intake Canal

Western silvery minnow and eastern plains silvery minnow were lumped into one

category (silvery minnows) because they were not identified past Genus, Hybognathus.

The length-frequency relationship had an r2=O.907 and the length frequency is shown in

Figure 14.

32

SILVERY MINNOWS

25 -r----------------...,LENGTH-WEIGHT RELATIONSHIPS

20

g 15

I-

61 10iIi13: 5

o

80

70

~60

u.. 500

I40

30

20

10

00

log(y) =3.137(log(x)) • 5.341

r2 =0.907

n =13900o

o 20 ~ 60 ~ 100 UO «0

TOTAL LENGTH (mm)


1Ii.V.".,•.'•. ;.~..IIiI

50 100 150 200 250


IL

L

I\-

L

L

L

,-

L

Figure 14 Western Silver Minnow and Eastern Plains Silvery minnow grouped togetherand their length-weight relationship and length frequency collected in 1997 inthe Intake Canal.

33

,,

v-

L

iL.

Longnose sucker ranged from 45 to 405 mm TL and were more frequently collected

earlier in the season from May through July. Figure 15 presents the length-frequency

relationship along with the length frequency of longnose sucker.

Figure 15 Longndlse sucker length-weight relationship and length frequency collected

in 1997 in the Intake Canal

34

CARP

5000,-------------,LENGTH-WEIGHT RELATIONSHIP

4000

§ 3000I-

~ 2000iii3: 1000

o

log(y) =2.942(log(x» - 4.736

,2=0.998n =96

o 200 400 800

TOTAL LENGTH (mm)

800

16,----------------,

14 TOTAL LENGTH FREQUENCY

iJ'j 12ii:u. 10o~ 8

~:IE 6

i 4

2

200 400 600 800


"I

1'''---" Carp were collected in the entrainment nets throughout the season, with largest carp

netted 676 mm TL in August. A total of 121 carp were collected with an average weight

of .99 Kg. Figure 16presents carp length-weight relationships.

L

Figure 16 Carp length-weight relationship and length frequency from fish collected in

1997 at the Intake Canal, Montana

35

DRUM

1400LENGTH·WEIGHT RELATIONSHIP

1200

1000logM = 2.817(log(x» • 4.508

§ r2=0.935800

I- n=98:x: 600C!l

~ 400

200

0

0 100 200 300 400 500 600

TOTAL LENGTH (mm)

22

20 TOTAL LENGTH FREQUENCY

:x: 18!!! 16

::: 14o 12

ffi 10III 8:e:::l 6Z

420

0 100 200 300 400 500 600TOTAL LENGTH (10 mm INCREMENTS)

Drum were primarily entrained later in the season from mid July through

September. Average( drum size was 271 mm TL (range = 21 to 446 mm TL). Figure 17

presents drum length-weight relationships.

;.......

~

Figure 17 Length-weight relationship and length frequency of drum collected in 1997 in

the Intake Canal

iI'- 36

CHANNEL CATFISH

3000

2500

log(y) = 3.039(log(x» • 5.211§ 2000 ,2= 0.975

I- n=86:I: 1500(!)

iii3: 1000

500

0

0 200 400 600 800

TOTAL LENGTH (mm)

1_

TOTAL LENGTH FREQUENCYi.

:I:!Z 1D~

~

0 •lI::WIII:::IE:::l -Z

•0 100 200 300 400 500 600 700


I'I.-'

I

~

I,-,.

Channel catfish were rarely encountered, especially compared to 1996 data, with

highest number collected in August. The average channel catfish size entrained was 256

mm TL and 216 grams. Figure 18 presents length-frequency data and the length weight

relationships.

,

'-='

Figure 18 Length weight relationship and length frequency of channel catfish collected in

1997 in the Intake Canal

'--

37

Bigmouth.buffalo were the largest fish entrained, and the largest of these

weighed 4.2 Kg. M~st of the bigmouth buffalo were collected in July with the highest

entrainment rate of 0.041 bigmouth buffalo per acre-foot on July 10.

Few burbot (total = 61) were collected, most were sampled by the furthest

downstream net along the face of the headworks. The majority of these fish had tissue

samples removed non-lethally for genetic studies by the State of Montana. Fish ranged in

size from 80 to 440 mm TL.

River carpsuckers were also relatively rare with 59 collected in 1997. These

fish ranged in size from 41 to 527 mm total length. Figure 19 presents the length-weight

relationships and length frequency for fish collected in 1997.

11L-

~'

;,

I'-()

L

38

RIVER CARPSUCKER

LENGTH WEIGHT RELATIONSHIP

..,log(y) = 2.817(log(x» - 4.508r2=0.935n=98

3500...-- ----,

3000

2500

:§ 2000....5 1500

~ 1000

500

o

o 100 200 300 400 500 600 700

TOTAL LENGTH (mlJl

12...-- ----,

TOTAL LENGTH FREQUENCY10

::I:Ulii: 8II.QII:: 6wIII

~ 4Z

2

o_ .........o\Ul-__iil.ll-.........Jilll.ll."............m

o 100 200 300 400 500 600

TOTAL lENGTH (10 mm INCREMENTS)

L

IL..-,

Figure 19 Length-weight relationship and length frequency of river carpsucker collectedin 1997 in the Intake Canal

Shovelnose sturgeon were primarily collected later in the irrigation season with

the peak collection of sturgeon September 10. All sturgeon collected were released back

into the river. The 44 sturgeon collected ranged from 390 to 923 Fork Length (FL) and

averaged 850 grams.

All of the blue suckers (total =41) were large (305 to 851 mm TL). This seems

'to go along with the local trend of only finding larger size fish in sampling from the lower

Yellowstone River (pers com, Phil Stewart).

39

Other species, of fish were relatively rare in the entrainment nets. Two sickle fin

chub (95 and 100 mm TL), a species of special concern by the State of Montana, were

collected on July 13 and July 16, 1997. These fish were released back into the river.

1998 RESULTS

In 1998 entrainment netting, additional emphasis was placed on collection of live

sturgeon chub and providing live chub for a reintroduction program. Additionally the

sturgeon chub were collected later in the season for use as brood stock in a fish culture

program. Data was ~ollected on all species, similar to previous irrigation seasons. A total

of 4,391 fish were netted; the species composition was similar to previous years. The

noticeable addition to major fish collected was the shovelnose sturgeon, which made up

about 8 percent of tlie entrained fish in 1998.

Very low nUlhbers ofpaddlefish and cisco were collected for the first time with the

entrainment nets in J998. Figure 20 presents the species composition for 1998. Sauger

comprised the largelf portion of 1998 total entrainment at 20.3%, followed by stonecat and

sturgeon chub. Lower flows in 1998 could have contributed change in species

composition. Entrainment rates were determined for each species by month and reported

in Table 6.

IL-,.-,

l--

i"'---r'

L

40

1998 SPECIES, COMPOSITON· LOWER YELLOWSTONE IRRIGATION CANAL

n = 4391 FISH

RIVER CARPSUCK8R6.3%

16.5%

/'/

//

/'/'

//

/'/'

OTHERS12.4%

"" "-

""-

HOVELNOSES~GEO8.0% "-,,-

"-

CHANNEL CATFISH 4.6%

WALLEYE 0.5%

DRUM 2.3%

BLUE SUCKER 0.5%-===~'::i:::~:iii~::'N~:gi:,~);;rl(iSHORTHEAD REDHORSE

0.6%

LONGNOSE DACE 2.3%

OTHERS 1.5%SILVERY MINNOWLONGNOSE SUCKER'MUTE SUCKE RBIG MOUTH BUFFALOSMALLMOUTH BUFFALOBURBOTCARPSICKLE FIN CHUBNORTHERN PIKEPAOOLEFISHEME RAlO SHIN NE R

I"--.0

Figure 20 Species composition of the fish collected with entrainment nets at IntakeCanal, Montana, 1998.

41

"

c.....-

Table 6 Estimated entrainment rates (fish per acre-foot ± one standard error ofthe mean) of allspecies collected in 1998 at Intake Canal. The last row in this table represents an estimate of themonthly total acre feet passed into the Intake Canal.

Species 5une July August September

Stonecat 1.132 (±O .406) 0.114 (±0.015) 1.109(±0.494) 0.013(±0.126)

Flathead chub 0.216(±0.069) 0.145(±0.045) 0.821(±0.332) 0.1 08(±0.1 08)

Sturgeon chub O.802(±0.336) 0.691(±0.268) 0.670(±0.168) 0.133(±0.101)

Goldeye O.252(±0.103) 0.031 (±0.007) 0.111(±0.047) 0.025(±0.025)

Sauger O.552(±0.185) 0.674(±0.129) 0.165(±0.056) 0.057(±0.057)

Longnose Dace O.045(±0.015) 0.270(±0.110) 0.048(±0.028) 0.005(±0.005)

Blue Sucker O.008(±0.004) 0.010(±0.006) 0 0

Longnose Sucker O.008(±0.004) 0.007(±004) 0.008(±0.005) 0.002(±0.002)

Carp O.004(±0.003) 0.007(±0.004) 0.041(±0.030) 0

Drum O.026(±0.014) 0.096(±0.033) 0.029(±0.015) 0.005(±0.005)

Channel Catfish O.137(±0.037) 0.166(±0.0.30) 0.444(±0.282) 0.121(±0.006)

Bigmouth Buffalo O.008(±0.004) 0.002(±0.002) 0 0

Burbot 0.011(±0004) 0.001(±0.001) 0 0

River Carpsucker O.143(±0.057) 0.072(±0.024) 0.043(±0.015) 0.016(±0.016)

Shovelnose O.009(±0.004) 0.O28(±0.010) 1.223(±0.121) 0.317(±0.248)

sturgeon

Walleye 0.014(±O.006) 0.006(±0.004) 0 0

White Sucker '0.001(±0.001) 0.001(±0.001) 0 0

ShOl;thead 0.012(±0.005) 0.008(±0.005) 0.01O(±0.005) 0.002(±0.002)

Redhorse

Emerald Shiner 0 0.002(±0.002) 0.007(±.004) 0.004(±0.004)

Brassy Minnow 0.007(±0.007) 0 0 0

Paddlefish 0 0.014(±O.006) 0 0

42

-'

"

,l.-

Species rune July August September

Western Silvery 0.003(±0.003) 0.004(±0.002) 0 0.002(±0.002)

Minnow

Flathead Minnow O.003(±0.003) 0 0 0

Smallmouth 0.0004 o0.007(±0.004) 0 0

Buffalo (:CO.0004)

Northern pike 0.003(±0.002) 0 0.002(±0.002) 0.004(±.004)

Cisco 0.0009 0 0 0

(±0.0009)

Sicklefin Chub 0.0007(±0.000 0 0 0

7)

Black Bullhead 0.0004 0 0 0

(±0.0004)

Total Fish 3.394(±0.949) 2.354(±0.248) 4.735(±1.319) 0.927(±0.699)

Monthly $4538 75755 77105 51090

Estimated acre-,

feet

In 1998 the nets were operated day and night and live collection of sturgeon chub

was performed with more frequent retrieval ofnets and the special cod end live cars.

When operating the ~ets day and night, strong diel differences were observed for certain

species. Figure 21 presents the day and night species composition during June, 1998. In

June many more stonecat and sturgeon chub were collected at night, where as sauger and

goldeye were more common during the day.

43

N =1044

- D~Z0I- 1Diii0II..:Ii0 2DCJCOWUW 3DII..COw:Iij:: 4DI-::E:C!lZ

5D

- 35

~Z 3D0 N=1257j::co0 25, II..:Ii0 2DCJC/)wU 15WII..

, C/)

W 1D:Iij::

~ 50

I

IL

~;

IL--

'-

L...;

U

iI----"

L

L·'

Figure 21 The relative percentage offish collected by night and day from June1998 in the Intake Canal, Montana.

Detailed analysis of sturgeon chub entrainment in 1998 shows highest entrainment

44

,'-

:'-

'-,

'---:

i-

rates in June and similar but lower rates in July and August. Figure 22 presents

extrapolated estimates of entrained sturgeon chub per month.

Sauger-are the most popular sport fish in the Intake Canal and appeared to be

entrained in high numbers in 1998. The entrainment rates for sauger were highest in July

(.674 fish per acre foot). Figure 23 presents an estimate of sauger entrained per month.

These values are extrapolated estimates from averaged monthly rates and the water

volumes in the canaL

45

6' 80 ,.-----------------------,oo...-C-eo::J 60 - -J:()

ZowCJ 40 - -c:::::JI-C/)

U.

o 20 --------------------------------------------------c:::weo~::JZ OL..----------~----------

June July August September

1998 MONTHLY TOTAL STURGEON CHUB ENTRAINMENT

----------------------------------------~----------

SeptemberAugustJulyJune

·····················B································••••....

70

a 6000....C. 50a:w(!}

40::::>«C/)

LL 300a:w

20D:l::E::::>z 10

0

L

,L-

Figure 22 Estimated total numbers of sturgeon chub entrained by month over the 1998irrigation year. Error bars are one standard error of the mean.

I

Figure 23 Estimated total numbers of sauger entrained by month over the1998 irrigation yearError bars are one standard error of the mean.

46

'--'

LL,, ,

!.......I

II'-

,-..

Discussion

Fish are entrained into the Intake Canal over the irrigation season. The significance of fish

loss from natural streams to irrigation diversions has been recognized since the early 1920s

(Prince 1922). Seasonal variations in species entrainment rates possibly can be explained by

movements of fish up lII11d down stream through the Intake Diversion dam area. Three species,

stonecat, flathead chub and sturgeon chub were the most frequently entrained fish. These and

other species entrained in higher numbers, show die1 trends during seasons and over the

crepuscular periods.

Fish moving up and down the Yellowstone River along the shore are most susceptible to

entrainment. In general, larger numbers of fish were collected from the net most downstream

(furthest east Intake sluice), suggesting fish moving upstream along the river edge are entrained

once they pass over the top of the rock dam (Intake Diversion Dam). Intake headworks is

positioned on the outside of a river bend nearest to the thalweg, possibly affecting fish response to

Intake entrainment flows. Fish may react differently if the Intake was positioned on an inside

bend or straight river rUn. The condition of fish netted was generally good Fish condition

decreased with greater length of time in the entrainment nets and increased debris loads. As the

study progressed, better cod ends were designed to improve the survival and condition of fish

entrained and collected.

Figure 24 presents monthly total fish entrainment estimates based on the daily average

rates multiplied by the monthly total acre feet passing into the canal for 1996 and 1997.

Differences between total entrainment in these two years is significant only in the June estimates.

This is probably due to several factors. In 1996, two nets were fished and used for entrainment

information, whereas rour were used in 1997. Fish entering the canal were not evenly distributed

across the sluice openings and possibly extrapolating data from only two nets inflated estimates

because more numbers of fish passed through those nets in the spring. This was demonstrated in

1997 when collections: from four nets were compared. The most eastern net (most downstream

with relation to the river) generally collected the most fish.

The more likely reason for the difference between years was 1997 was a relatively high

47

Monthly Total EstimatedFish Entrainment

Intake Canal, Montana

1996 1997Thousands

300 r------'--------..., Thousands300 r-------------.,

-11----50

100

150 .

200 .

250 .

50 J•••••••••••••••••••••••••••••••••••

150 .

100 .

NO

o '---------------'May June Juty August Sept.

I = 1 Standard err~r of the mean

O'--------------JMay June Juty August Sept.

water year than 1996. Several factors could be affecting entrainment with high water and will be

elaborated later in this1 section. In examining the Yellowstone River discharge, the greatest

difference between the two years was in the peak period, primarily during June.

L

'-'

(ij'--

Figure 24 Total fish entrainment estimates for 1996 and 1997 calculated monthly from averaged

daily entrainment rates and canal flows.ND = No data

Total fish entrainment for 1998 was higher than 1996 or 1997, and the flows in the

Yellowstone River were lower. Highest total fish entrainment was in August, similar to the

prevIous year. The August high monthly average rate of total fish entrained was 4.735 (±1.319)

48

500 ~-----------------------....,

400 -----------------------------

300-----------------------------

100 ---------------------------------------------------

200 - --

oooT'""

C::r:Cf)

u::1Lo0:WCO~::>z...J

~oI-

OL,------------------------.....JJune July August September

fish per acre foot of inflow water. In September the lowest number were entrained. Figure 25

presents the relative levels and estimates of total fish entrained per month from June to September

1998. Total fish entrained was twice that of 1997.

Il-

,I,

LJ

'--'

I

IL

I~

L

,~

Figure 25 Total fish entrainment estimates for 1998 calculated monthly from averaged dailyentrainment rates and Intake canal flows. Error bars are ±one standard error of themean.

Fish Entrainment and Yellowstone River Flows

The river flows over four irrigation seasons (includes 1999) and the four years average

entrainment were eXal1nined for a relationship that could be used to reliably predict entrainment

49

FLOWS IN THE YELLOWSTONE RIVER,USGS GAGING STATION, SIDNEY, MT

1996 • 1999100000 ....---------------------....

cza()wtn~Wa..IwWu.()

a:l::;)()

80000

60000

40000

20000

-1996- 1997- 1998- 1999

0 ....- ...----.....---.....---....---....--...

IL

rates. From May 15 to September 30, the daily average flow in the Yellowstone River and the

average fish entrained per acre foot each year were compared in regression analysis. Figure 26

presents the daily average flows during this period in 1996 -1999, and shows the wide range of

flows occurring over tlle four years during the irrigation season.L.-

L

L

,L-

Figure 26 Daily Yellowstone River flows at the Sidney, Montana monitoring gauge from May15 to September 30 in 1996, 1997, 1998, and1999.

The data associated with the average Yellowstone River flow per irrigation season in the

relation to the average total fish entrainment rates (fish per acre foot) are shown in Figure 27. A

surprisingly strong negative relationship (r 2=0.987) was found. In general, during years of lower,,L

L 50

L

TOTAL FISH

y=..o.o000987{X) + 4.1161

r'l=O.987

•

_ 3 ,..-~----------------.,'0.e~CJas-i 2

~

3500025000 300002000015000

~zw::!:z~ 1

~ZW:::J:.

enu::: 0 +-----,.---...,....---.,......---...----110000

MEAN DAILY RIVER FLOW (cfs)

I'--

L

IIL:

[

L

L

Yellowstone River flows more fish are entrained at Intake Canal. Several factors could help to

explain the relationship including: 1) lower densities of fish exposed to the Intake with higher

flows (similar to a dilution), 2) the greater velocity sluice flows swept fish past the Intake at

higher flows, 3) the increased river depth at high flow, and 4) the concentration of woody debris

at the Intake canal entrance during high flows that could function as a screen of sorts. With the

high predictability of this relationship (Figure 27), we could reliably estimate entrained fish using

the river flows averaged over the irrigation season. If flows were greater or less than those

observed in this four year period, estimates of entrained fish would less reliable.

L

II...-

I

iL'

Figure 27 The relationship between the average daily Yellowstone River flows (Sidney gauge)each year and the corresponding average total fish entrainment rate at the Intake Canalfrom May 15 to September 15 for 1996, 1997, 1998, and 1999.

The relationship between flow and sturgeon chub entrainment was analyzed (Figure 28),

and again a relatively strong negative relationship (F.907) occurred over the irrigation season.

The r 2 indicates that 90 percent of the variation in the entrainment rates could be explained by,

51

STURGEON CHUB

25000

-- 0.50O.O .....(1) 0.45...CJcu

0.40-.c:III= 0.35-~,Z 0.30W:EZ 0.25

~ 0.20~ZW 0.15~U)

u:: 0.1010000 15000 20000

•

y=-o.0000184(X) + 0.7413

r=0.447

30000 35000

MEAN DAILY RIVER FLOW (cfs)

LI

and related to the flows in the Yellowstone River.

j

L

Figure 28 The relationship between the average daily Yellowstone River flows (Sidneygauge) each year and the corresponding average total sturgeon chub entrainment rateat the Intake Canal from May 15 to September 15 for 1996, 1997, 1998, and 1999.

The sauger entrainment and river flow relationship was similarly analyzed and is presented

in Figure 29. Sauger entrainment and river flow are less closely related than as the sturgeon chub

. The lower entrainment of sauger in 1999 may be partially explained by an overall trend in the

population noted in the Yellowstone River (Phil Stewart, pers com). The r 2 of 0.447 indicates a

portion of the sauger entrainment could be explained by the Yellowstone flow.

52

Figure 29 The relationship of the average daily Yellowstone River flows (Sidney gauge) eachyear and the corresponding average total sauger entrainment rate at the Intake Canalfrom May 15 to September 15 for 1996, 1997, 1998, and 1999.

Fish Entrainment Reduction

Fish entrainment could be reduced by constructing a barrier device on the face of the

diversion which keep fish out of the canal, or a diverter which allows entrainment into the canal

and then returns a portion of the water and fish to the river through a side channel. The most

practical solution is screening fish at the face ofthe diversion because fish are not exposed to

within canal predators-or impingement at debris screens down canal. Fish kept in the river can

pass upstream past the.diversion to spawning or feeding areas.

53

,L

Ii,--!I'--

I

L

L

u

LL

L

I

L.;

L

L

II

L

A conventionall in-canal screen, such as a rotating drum screen, and by-pass system would

return entrained fish downstream of the headworks. Fish moving upstream would have to

renegotiate the canal headworks again and if entrained again the fish may be trapped in a cycle

with little potential to) get upstream past the Intake Canal. Bakes et al.(1998) has noted fish need

use of the entire river, up and downstream ofa diversion on a tributary of the Yellowstone River.

A large angleli presence is seen in the canal near the headworks and fishing appears good.

The in-canal screening technique would allow anglers to catch fish near the diversion but

entrained fish would not be stranded in fields or in the canal when drained. Screening placed in

the canal would not n~ed to be removed and reinstalled every season to prevent ice damage, but

would present a challenge to return screened fish to the river with a bypass system.

Relocating the canal intake area away from the shore toward the center of the river could

reduce entrainment. Fish generally moving up or down along the river margin would be less likely

to encounter these enttainment canal flows. Louvers and positive barrier screens placed either at

the Intake mouth or within the canal would also reduce entrainment.

Operation modifications to reduce entrainment might work for species with large

differences in day and night entrainment. Unfortunately, reducing nighttime irrigation flows

might cause higher daytime flows encouraging greater numbers of daytime entrained fish. Other

operational fish entrainment reduction techniques could include reducing the flows into the Intake

Canal and maintaining the first six miles of canal at a shallower depth or shutting the canal off

54

L.-:

I

L

L

L

during periods ofno imgation demand. As well, there are possibly opportunities to use

behavioral techniques ~;uch as sound, lights, or electricity to guide fish away from the present

situation. With any fish technique to reduce entrainment, rigorous evaluation should be

incorporated to ensure the barrier works.

Because sturgeon chub are proposed for listing, designing a system to prevent this

species' entrainment could be emphasized. A screen system designed for this relatively small

species will probably be very effective in reducing entrainment of most all the other species found

in the Lower Yellowstone River.

Liston et aL (1991) presents several options and associated costs for a variety ofbarrier

designs on the Tongue River near Miles City, Montana. The sizing techniques and operations

could be used to design a screen or louver at Intake CanaL Specific fish species may need to be

"targeted" for screenin:g, and these could be used when developing criteria and beginning

planning for future modifications at Intake CanaL

ACKNOWLEDGMENTS

We would liketo express sincere appreciation to Jerry Nypen and his crew from theLower Yellowstone Inrigation Project who greatly assisted in setting up the collection system andoperated the gates in a:very timely manner. Dr. Dennis Scarnecchia, University ofIdaho, and hiscapable assistants were valuable in operating the nets when we were engage elsewhere. Wegreatly appreciated Wade King, USFWS, and his tremendous efforts and help in collecting andcoordination ofthe sturgeon chub recovery program. The Bureau's Montana Area Officeprovided major funding for this program.

Sadly, Tom Parks, a co-author, naturalist, and great friend passed away while working onthis study. This report! is dedicated to his memory and his continued presence, in spirit, for thefishery resources.

55

LITERATURE CITED

Bakes, K.M., V. Riggs, and D. Peters. 1998. Tongue River Entrainment Study on the T&Y Canal,May 29 to October 10~ 1997. Montana Fish Wildlife and Parks, Region 7, Miles City, Montana.16 pages

Bell, M.e. 1990. Fisheries Handbook ofEngineering and Biological Criteria, Fish PassageDevelopment and Evaluation program, Corps ofEngineers, North Pacific Division, Portland,Oregon.

Helfrich, L.A., C.Liston, S.Hiebert, M.Albers, and K. Frazier. 1999. Influence ofLow-headDiversion Dams on Fish Passage, Community Composition, and Abundance in the YellowstoneRiver, Montana. Rivers 7 (1): 21-32.

Liston, C.L., P. Johns<t>n, B.Mefford, and D. Robinson. 1994. Fish Passage and ProtectionConsiderations for the Tongue River, Montana, In association with the Tongue River DamRehabilitation Project: Dept. of Interior Memorandum, US Bureau ofReclamation, TechnicalServices Center, Denver, Colorado. 81 pages.

National Marine Fisheries Service. Revised Juvenile Fish Screening Criteria. March 2, 1995.

Prince, E.B. 1922. Irrigation canals as an aid to fisheries development in the West. Transactions ofthe American Fisheries Society 52:157-165.L

LIi

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56

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APPENDIXA

INTAKE MONTANA SIEVE NEITING -1996DATE START STOP DURATION NET

TIME TIMEGATE CANAL FL FLOW SAM ACRE FT THRU NETOPENING CFS CFS

F1t<>!aI # gal HI-Q560(60XD)

SAUGER WAllEYE BURBOT CHANNel STONECATBLACK SHOVElN GOlDEYE FlATHEAD STUF:GEO SICKlEFIN lONGNOS BRASSY EMERAlD SPOTTAll BIGMOUTHDRUM CARP RIVER lONGNOS WHITE BLUE SHORTHE BlACK GREEN SMAllMO NORTHER UNIDENTIFTOTALCATFISH BUllHEAD STURGEON CHUB CHUa CHUB DACE MINNOW SHINNER SHINNER BUFFALO CARPSUC SUCKER SUCKER SUCKER REDHORS CRAPPIE SUNFiSH BASS PIKE SMAll FIS FISH

FISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTASHlAC.FTFISHIAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTASHIAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTASHIAC.FTFISHlAC.FTFISHlAC.FTASHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHIAC.FTFISHlAC.FT.

08lOS19608lOS19608lOS19608I0S1960810819608lOS19608lOS19608lOS19608I0S196081081960810819608lO8I!is08lOS19608lOS19608lOS19608lOS19608lOS19608lOS1960810919608109196081091960810919608109196081091960810919608109196081091960810919608109196081091960810919608109196081091960810919608109196

-08110196081101960811019608110196081101960811019608110196081101960811019608110196081101960811019608110196081101960811019608110196081101960811019608111196081111960811119608111196081111960811119608111196081111960811119608111196081111960811219608112196081121960811219608112196081121960811219608112196081121960811219608112196081121960811319608113196081131960811319608113196081131960811319608113196081131960811319608113196081131960910419609104196091041960910419609104196091041960910519609105196'0910519609105196091051960910519609105196091051960910519609105/96091051960910519609116196

920815

151013551930182510252045135012451135810915

18201930705

20451500950

16071825840

1402735

1055950

1715730

13571100835

1507161717261836185017402110

920720620

22151030200022202115

72717401040927625

2005190015051845151017101405140019451950183017252045115519451730120013151525183513051930182517201510930

1740145510351635124016451450935

1035123517502240234219161910223123352025114512481522213017281150130020352142173615312030

1025915

161515002035192511302145145513451235910

102019202035

80521451610105017071925945

1502836

115510501815830

14571200

94016071717182619361950184022101020920720

23201225210023302215

927185012401037727

21102000170519451715163015051500204521001930182221401300210016301310152017251940150520301930182017101030194016301230173514451745164010351235143519502340244220162010233124352125124515201722223020241250152521352242203017312130

65 WEST60 WEST65 WEST65 WEST65 WEST60 WEST65 EAST60 WEST65 EAST60 EAST60 EAST60 EAST65 EAST60 EAST65 EAST60 EAST60 EAST70 EAST60 EAST60 WEST60 WEST65 WEST60 EAST61 WEST60 WEST60 WEST60 WEST60 EAST60 WEST60 EAST65 EAST60 EAST60 EAST60 EAST60 EAST60 WEST60 WEST60 WEST60 WEST

120 WEST60 WEST65 WEST

115 WEST60 WEST70 EAST60 EAST

120 EAST70 EAST

120 EAST70 EAST62 EAST65 EAST60 EAST

120 WEST60 WEST

125 EAST80 WEST60 EAST60 WEST60 WEST70 EAST60 EAST57 EAST55 WEST65 WEST75 EAST60 EAST70 EAST

125 EAST120 EAST65 EAST

120 WEST60 WEST65 WEST60 WEST

120 WEST60 WEST

120 EAST95 EAST

115 WEST60 EAST

125 EAST60 WEST

110 WEST60 EAST

120 EAST60 WEST

120 WEST60 EAST60 EAST60 EAST60 WEST60 WEST60 WEST60 WEST60 WEST

162 WEST120 WEST60 WEST

184 WEST60 EAST



0.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.375

0.31250.3125

0.3750.375

0.31250.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750,3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.3750.375

1345134513451345134513451345134513451345134513451345134513451345134513451325131513151325132513251325132513151325132513251325131513151315l.t5131013101310131013101310131013101310131013101310131013101310131013101310131013301310133013101310133013301330133013301330133013301330133013301330133013301330133013301370137013701370137013701370137013701370137013701375137513751375137513751385138513851385138513851385138513851385138513851355

75 6.71487675 6.19834775 6.71487675 6.71487675 6.71487675 6.19834775 6.71487675 6.19834775 6.71487675 6.19834775 6.19834763 5.20661263 5.64049675 6.19834775 6.71487663 5.20661275 6.19834775 7.23140574 6.11570274 6.11570274 6.11570274 6.62534474 6.11570274 6.21763174 6.11570274 6.11570274 6.11570274 6.11570274 6.11570274 6.11570274 6.62534474 6.11570274 6.11570274 6.115702

. 74 ..~.11.§lQ2n 6.36363677 6.363636n 6.36363677 6.363636n 12.7272777 6.36363677 6.89393977 12.1969777 6.363636n 7.424242n 6.36363677 12.72727n 7.424242n 12.72727n 7.42424277 6.575758n 6.89393977 6.36363669 11.4049670 5.78512469 11.8801770 7.71349969 5.70247969 5.70247970 5.78512470 6.74931170 5.78512470 5.49586870 5.3030370 6.26721870 7.23140570 5.78512470 6.74931170 12.0523470 11.5702570 6.26721870 11.5702570 5.78512470 6.26721870 5.78512470 11.5702572 5.95041372 11.9008372 9.42148872 11.4049672 5.95041372 12.3966972 5.95041372 10.9090972 5.95041372 11.9008372 5.95041372 11.9008373 6.03305873 6.03305873 6.03305873 6.03305873 6.03305873 6.03305874 6.11570274 6.11570274 16.512474 12.231474 6.11570274 18.7548274 6.11570274 14.7796174 6.11570274 6.11570274 17.5316874 12.231472 5.950413

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INTAKE MONTANA SIEVE NETTING -1996 SAUGER WALLEYE BURBOT CHANNEL STONECATBLACK SHOVELN GOLDEYE flATHEAD STURGEO SICKLEFIN LONGNOS BRASSY EMERALD SPOTTAIL BIGMOUTHDRUM CARP RNER LONGNOS WHITE BLUE SHORTHE BLACK GREEN SMALLMO NORTHER UNIDENTIFTOTALDATE START STOP DURATION NET GATE CANALFL FLOW SAM ACRE FT THRU NET CATFISH BULLHEAD STURGEON CHUB CHUB CHUB DACE MINNOW SHINNER SHINNER BUFFALO CARPSUC SUCKER SUCKER SUCKER REDHORS CRAPPIE SUNFISH BASS PIKE SMALL FIS FISH

TIME TIME OPENING CFS CFS FISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHIAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FTFISHlAC.FT.

r- F/total # 9al Hl43560(50XD)

09116196 1417 1517 50 EAST 0.375 1355 72 5.950413 0 0 0 0 0 0 0 0 0.336111 0 0 0 0 0 0 0 0 0 0 0.336111 0 0 0 0 0 0 0 0 0.67=09116196 1530 1730 120 EAST 0.375 1355 72 11.00083 0 0 0 0.084028 0 0 0 0 0.336111 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.42013909116196 1810 2010 120 WEST 0.375 1355 72 11.00083 0.084028 0 0 0.168056 0 0 0 0 0.168056 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.084028 0.50416709116196 1535 1735 120 WEST 0.375 1355 72 11.90083 0 0 0 0 0 0 0 0 0.084028 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.084028

~-09116196 1423 1523 50 WEST 0.375 1355 72 5.950413 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 009116196 1805 2005 120 EAST 0.375 1355 72 11.00083 0 0 0 0.084028 0 0 0.084028 0 0.084028 0 0 0 0 0 0 0 0 0 0 0.084028 0 0 0.084028 0 0 0 0 0 0.42013909116196 2025 2125 50 WEST 0.375 1355 72 5.950413 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.336111 0.33611109/17196 910 1310 240 EAST 0.375 1355 72 23.80165 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.042014 0 0 0 0.042014 0 0.08402809117196 500 700 120 WEST 0.375 1355 72 11.00083 0.084028 0 0 0.168056 0 0 0 0 0.084028 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.168056 0.50416709117196 2000 2200 120 WEST 0.375 1355 72 11.00083 0 0 0 0.168056 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.168056 0.33611109117196 1750 1950 120 WEST 0.375 1355 72 11.00083 0 0 0 0 0 0 0 0 0.084028 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.084028

r09/17196 1545 1745 120 WEST 0.375 1355 72 11.90083 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 009117196 705 905 120 EAST 0.375 1355 72 11.90083 0 0 0 0 0 0 0 0 0.084028 0 0 0 0 0 0 0 0 0 0 0.168056 0 0 0 0 0 0 0 0 0.25208309117196 910 1310 240 WEST 0.375 1355 72 23.80165 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.042014 0 0 0 0 0 0 0 0 0 0 0 0 0 0.04201409117196 700 000 120 WEST 0.375 1355 72 11.90083 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 009117196 1320 1525 125 WEST 0.375 1355 72 12.39669 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.080667 0 0 0 0 0 0 0 0 0 0.08066709117196 1325 1530 125 EAST 0.375 1355 72 12.39669 0 0 0 0 0 0 0 0 0.242 0 0 0 0 0 0 0 0 0 0.080667 0 0 0 0 0 0 0 0 0 0.32266709117196 2000 2200 120 EAST 0.375 1355 72 11.00083 0 0 0 0.168056 0.084028 0 0.168056 0.084028 0.168056 0.084028 0 0 0 0 0 0 0 0.084028 0.084028 0 0 0 0 0 0 0 0 0.084028 1.00833309117196 1755 1955 120 EAST 0.375 1355 72 11.90083 0.084028 0 0 0.084028 0 0 0 0.084028 0.252083 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.50416709/17196 1550 1750 120 EAST 0.375 1355 72 11.00083 0.084028 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.08402809117196 505 705 120 EAST 0.375 1355 72 11.90083 0 0.084028 0 0 0.084028 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.16805609118196 1545 1545 60 EAST 0.375 1355 72 5.950413 0 0 0 0.168056 0.168056 0 0 0.168056 0 0 0 0.336111 0 0 0 0 0.168056 0 0 0 0 0 0 0 0 0 0 0.504167 1.512509118196 1545 1645 60 WEST 0.375 1355 72 5.950413 0 0 0.168056 0.504167 0.67= 0 0.168056 0.336111 0 0 0 0 0 0 0 0 0 0.336111 0.168056 0 0 0 0 0 0 0 0 0 2.35277809118196 1335 1535 120 WEST 0.375 1355 72 11.00083 0 0 0 0.252083 0 0 0 0.084028 0.084028 0 0 0.252083 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.084028 0.7562509118196 930 1330 240 WEST 0.375 1355 72 23.80165 0 0 0.084028 0 0 0 0.042014 0 0.042014 0 0 0 0 0 0 0 0 0.042014 0 0 0 0 0 0 0 0 0.042014 0 0.252083

[ ,09118196 1335 1535 120 EAST 0.375 1355 72 11.00083 0 0 0 0 0 0 0 0 0 0 0 0.084028 0 0 0.084028 0 0.084028 0 0 0 0 0 0 0 0 0 0 0 0.25208309118196 915 1315 240 EAST 0.375 1355 72 23.80165 0 0.042014 0 0 0 0 0 0.042014 0.084028 0 0 0 0 0 0.084028 0 0 0 0 0 0 0 0 0.042014 0 0 0 0 0.29409709119196 1050 1250 120 WEST 0.375 1355 72 11.90083 0 0 0 1.260417 0.336111 0 0 0 0.252083 0 0 0 0 0 0 0 0 0.084028 0 0 0 0 0 0.084028 0 0 0 0.504167 2.52083309119196 630 730 50 WEST 0.375 1355 72 5.950413 0 0 0 4.033333 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1.680556 5.71388909119196 1630 1830 120 WEST 0.375 1355 72 11.00083 0 0 0 0.504167 0.75625 0 0 0 0.084028 0 0 0 0 0 0 0 0 0.084028 0.168056 0 0 0 0 0 0 0 0 0.840278 2.43680609119196 800 1000 120 WEST 0.375 1355 72 11.00083 0 0 0 3.865278 0 0 0 0 0 0.084028 0 0 0 0 0 0 0 0 0.084028 0 0 0 0 0 0.168056 0 0 1.092361 5.2937509119196 800 1000 120 EAST 0.375 1355 72 11.90083 0 0 0 2.772917 0.336111 0 0 0 0.168056 0 0 0 0 0 0 0 0 0.168056 0 0 0 0 0 0 0 0 0 0.924306 4.369444

[09119196 1630 1830 120 EAST 0.375 1355 72 11.00083 0 0 0.168056 1.092361 4.621528 0 0 0 1.008333 0 0 0.084028 0 0 0 0 0.084028 0 0.168056 0 0 0 0 0.084028 0 0 0 0.75625 8.06666709119196 1050 1250 120 EAST 0.375 1355 72 11.90083 0 0 0.084028 1.596528 0.840278 0 0 0.084028 0.588194 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.588194 3.7812509119196 630 730 60 EAST 0.375 1355 72 5.950413 0 Q .0- ~ 1L1lill!I56 0. 0. 4 D.336l-11 0 0 -11 9- ·a o· "1l 0 0 0 '0- 0 0 0 0 Ii 0 0 0.168056 3:529167ll9I't919O --1840 -2040 f20 EAST 0.375 1355 - 72 11.90083 0 0 0.084028 1.848611 4.705556 0 0 0 1.008333 0 0 0 0 0 0 0 0 0 0.084028 0 0 0 0 0 0 0.084028 0 0.420139 8.23472209119196 1840 2040 120 WEST 0.375 1355 72 11.00083 0 0 0 0.75625 1.092361 0 0 0 0.840278 0 0 0 0 0 0 0 0 0 0.168056 0 0 0 0 0.168056 0.084028 0 0 0.504167 3.613194

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APPENDIXB

Cf'S PER ACREFEET STONECAT CHANNEL fLATHEAO ST\JRGEO CREEK SIlVERV BRASSY LONGNOS lONGNOS 'MiITE BlUE SHORTHEARIVER BIGMOUTH BURBOT GOLDEYE SAUGER WALlEYE RAINBOW BROWN SHOVELN CARP Bl.ACK SMAI.LMO WHITE GRfB\I SICKLEFIN STlCK1.EBANORTHER DRUM SPOTIAIL EMERALD FATHEAD MOUNTAIN TOTAlSET THRU NET CATFISH CHUB CHUB CHUB MINNOW MlNNOW DACE SUCKER SUCKER SUCf<ER REOHORS CARPSUCKBUFFAlO TROUT TROUT S:rtJRGEON BlIU.fEAD BUFFAlO DW'PIE SUNR5H CHUB PIKE SHINNER SHINIlER MINNOW WHITEFISH ASH

PER AC,Ff PER AC-.FT. PER AC.Ff. PER AC.FT. PER AC.FT PER AC.FT.PER AC.FTPER AC.Ff. PER AC.FTPER AC.Ff. PER AC.FT.PER I4C.FT. PER AC.FT.PER ACFT. PER AC.FT. PER AC.FT. PER AC,Ff.PER AC.FT.PER AC.FT. PER AC.Ff, PER AC.FT.PER A/;,FT, PER AC,Ff. PER AC.Ff PER IC. Fl. PER ACFT.PER AC.FT. PER ACFT.PER AC.FT. PER AC.Ff. PER AC.FT PER AC.FT. PER AC.Ff. PER AC,Ff. PER AC.Ff

GoGo

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062797062797.Q627970627970627970627·9706"27970627970627910627-970627·970627,97062797062797062797062897062897052897052897062897~2a97

06289706289706289706289707079707079707089707.0897070897070897070697070897070897·)70697'J70897

START

184''85018552010201520452050

850...10501055113012201225,,.5140015301535'900190011551200

'330'500'500'6501655'840'84020102010630840

'000'0051115112012301235,.,.143516301935-840

84.1000101511101125'256'30014151420615020......

11151115'235123''4201420'530'535,...,...17501750191019102020202021302130

835835

11051110'3001300'4351435,....154517'"17'"18101810'925192520402040

925930932

'04010471047115211541157131013131313172017301740

'8351857950

1005105511151230<23012382220222522351830'835'i3O......020930550,,.,

1210

14'"

STOP

1950200020052.30204521152.20...

925115011201210133'.3251510'500.84'.635200020001256'300.440'620'6201000'0001940194021102110930950

110511101215

'22014001415

'600161520402100-940

'0001105112012251240141014151515'520920920

'045'04''2201220133513,.

'520'5201630'635'74017401850'850201520152'202.2022302230

935935

12201220'40014001535'5351645

' ..5laDO1000181019102025202521402140'025'030'0351140

".."50'2521256'3011410141514151520.630184019351957....".."5512151435>430>438'4202425,"30'940

""'"920940

-'30:1501~5

""".550

DURATION fET

65 YW70 BE70 VE80VE30 8W30 YW30 8W80VE30 8W80VE25 8W40 8W75VE80YW75VE80YW75VE80 YW80 BE80 YW80YW80 BE70 BE80 YE80 BE70 BE65 ve60VE60 BE60 BE60 YE60VE708W658W65 VE80 VE80 8W808W

100 VE50VE

'00 8W708W85 VE60 vI§:75 BW65VE65 BW75VE75 BW75 VE75 BW60VE80BW65 BE80 8W60 BE80 8W65 BE65 BWeo BEeo8W80 BE60 8W808W60 BE80 BE80 BWeo BWeo BE65 BW65 BEeo BEeo8Weo8Weo BEeo BE60 8W75 BE70 8Weo BEeo OWeo BE80 OW60 BEeo8Weo8W80 BE60 8W80 BE"BEeo OW60 8W80 BEeoVE80 BE63 BWeo OW.. VE63 BEeo YE.. 8W"BEeo YE52 BE52 8WeoVEeo BE80 BWeoVE80 OW60VE60 BW60 YE60 BW

125 YE120 ew'20 BE120 YE120 BW125 BE60 VES5 BW90 'if55 BW75 Yf80 BW

120 Yf120 BW.. BW

11() BE-00 o{E

RIVER GATE TOTAlSURFACE OPENING GATESELEVATION

10.02 0.375 3.7510.02 0.3125 3.7510.02 0.3125 3.7510.02 0.3125 3.7510.02 0.375 3.7510.02 0.375 3.7510.02 0.375 3.7510.17 0.3125 3.87510.17 0.375 3.87510.17 0.3125 3.87510.17 0.375 3.87510.17 0.375 3.87510.17 0.3125 3.87510.17 0.315 3.87510.18 0.3125 3.81510.18 0.375 3.87510.18 0.3125 3.87510.18 0.375 3.87510.18 0.3125 3.87510.18 0.375 3.87510.04 0.375 3.87510.04 0.3125 3.87510.04 0.3125 3.87510.04 0.3125 3.87510.04 0.3125 3.87510.04 0.3125 3.87510.04 0.3125 3.87510.04 0.3125 3.87510.04 0.3125 3.87510.04 0.3125 3.87510.04 0.3125 3.8759.78 0.3125 3.93759.78 0.3125 3.93759.78 0.3125 3.93759.78 0.3125 3.93759.78 0.3125 3.93759.78 0.3125 3.93759.78 0.3125 3.93751.78 0.3125 3.93759.78 0.3125 3.93759.78 0.3125 3.93759.78 0.3125 3.93759.78 0.3125 3.93759.32 0.3125 4~1259.32 0.3125 4.1259.32 0.3125 4.1259.32 0.3125 4.1259.32 0.3125 4.12$9.32 0.312$ 4.12$9.32 0.3125 4.1259.32 0.3125 4.1259.32 0.3125 4.12$9.32 0.3125 4.125

0.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.S0.25 3.50.25 3.50.25 3.!50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.2$ 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.50.25 3.5

7.5 0.25 3.57.5 0.25 3.57.5 0.25 3.57.5 0.25 3.57.5 0.25 3.57.5 0.25 3.57.5 0.25 3.57:5 0.25 3.57.5 0.25 3.57.5 0.25 3.57.5 0.25 3.57.5 0.25 3.57.3 0.25 3.57.3 0.25 3.57.3 0.25 3.57.3 0.25 3.57.3 0.25 3.5

6.95 0.25 3.756.95 0.25 3.756.95 0.25 3.756.95 0.25 3.756.95 0.25 3.756.95 0.25 3.756.95 0.25 3756.5 0.25 3.8756.5 0.25 3.8756.5 0.25 3.875

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1DATE START STOP DURATION NET RIVER GATE TOTAL RATIO THR CANAL CFSPER ACREFEET STONECAT CHANNEL FlATHEAD SWRGEO CREEK SILVERY BRASSY lONGNOS LONGNOS WHITE BLUE SHORTHEARlVER BIGMOUTH BURBOT GOlDEYE SAUGER WALLEYE RAINBOW BROWN SHOIlELN CARP BLACK SMAlLMO WHITE GREEN SICKlEFIN STICKLEBANQRTHER DRUM SPOTTAtL EMERALD FATHEAD MOUNTAIN TOTAl

SURFACE OPENING GATES GATE FLOW SET THRU NET CATFISH CHUB CHUB CHUB MINNOW MINNOW DACE SUCKER SUCKER SUCKER REDHORS CARPSUCKBUFFAlO TROUT TROUT STURGEON BUllHEAD BUFFAlO CRAPf'IE SUNFISH CHUB PIKE SHINNER SHINNER MINNOW WHITEFtSHFISHELEVATION CFS PER AC.FT. PER AC.Ff. PER AC.FT. PER AC,FT. PER AC.FT. PER AC.A, PER AC.Ff. PER AC.FT. PER AC.A PER Ae.FT. PER AC.Ff.PER AC.Ff. PER AC.A. PER AeFT. PER AC.Ff. PER AC.Ff. PER AC.FT. PER AC.FT. PER AC,FT. PER AC,Ff. PER AC.FT. PER AC,Ff. PER AC.Ff. PER AC.FT PER AC.Ff. PER AC.A. PER AC.FT. PER AC.FT. PER AC.FT. PER AC,FT. PER AeFT. PER AC,FT. PER AC.Ff. PER AC.FT. PER AC,Ff

0622·97 "" '000 90 BW 3.52 0.375 6.375 O.05M24 1no 104.118 12.909 ooסס0 0 0.232397 0 0 0 0 0 0 0 0 0.232397 0.077466 0 0 0 0 0 0 o . 0.54226108.22."'97 "" '000 90 YE 3.52 0.25 6.375 0.039216 1no 69.412 6.606 ooסס0 0 0.116199 0 0 0 0 0 0 0 0 0 0.232397 0 0 0 0 0 0 0 0.34559608:22·97 1015 1215 120 BE 3.52 0.25 6.375 0.039.216 1no 69.412 11.475 OOסס.0 0 0 0 0 0 0 0 0 0 0 0.087149 0 0 0 0 0 0 0 0 0.08714908.'2297 1015 1215 120 BW 3.52 0.375 6,375 O.05lla2. 1770 104.118 17.212 ooסס0 0 0.232397 0 0 0 0 0 0 0 0 0.232397 0.050099 0 0 0.058099 0 0 0 0 0"""""08.'22,97 1015 1215 '20 YE 3.52 0.25 6.375 0.039216 ,no 69.412 11.475 OOסס.0 0 0.261447 0 0 0 0.087149 0 0 0 0 0.261447 0.174298 0 0 0 0 0 0.174295 0 095663908'2297 1220 1420 120 BW 3.52 0.375 6.375 O,0S882. 1770 104.1HI 17.212 OOסס.0 0 0.406695 0 0 0 0.050099 0 0.056099 0 0 0.522894 0050099 0 0 0 0 0 0.050099 0 1.161ge708'2297 1220 1420 120 YE ~52 0.25 6.375 0.039216 lno 69.412 11.475 OOסס.0 0 0.435745 0 0 0 0.0671.9 0 0 0 0 0 0.174296 0 0 0 0.087149 0 0.087149 0 0.5714906,2297 1220 1420 120 BE 3.52 0.25 6.375 0.039216 1770 69.412 11.475 OOסס.0 0 0.174298 0 0 0 0 0 0 0 0 0.174298 0 0 0 0 0 0 0 0 0.346596082297 1430 1630 120 BW 3.52 0.375 6.375 0.058824 1770 104.118 17.212 0.0581 0 0.639093 0,058099 0.058099 0.058099 0 0 0 0 0 0.116199 0.116199 0 0 0 0 0 0 0056099 1.16198708 22 97 1430 1630 120 YE 3.52 0.25 6.375 0.039216 1770 69.412 11.475 ooסס0 0 0,348596 0 0 0 0 0 0 0 0 0,261447 0522894 0 0 0 0 0 0.261447 0 1.3943840822/97 1430 1630 120 BE 3.52 0.25 6.375 0.039216 ,no 69.412 11.475 OOסס.0 0 0.261447 0 0 0 0 0 0 0 0 0.087149 0 0 0 0 0 0 0 0 0.34aS9608.:23'97 650 620 90 BW 3." 0.375 5.875 0.06363 lno 112.979 14.008 OOסס.0 0 0,21417 0 0 0 0 0 0 0 0 0.42834 0.07139 0 0.07139 0 0 0 0 0 0.755291oa-'2397 6.. 825 90 YE 3.46 0.25 5.675 0.042553 1no 75.319 9.338 OOסס.0 0.107085 0.321255 0,107085 0 0.107085 0 0 0.107085 0 0 0,107085 0.64251 0 0 0 0 0 0 0 1.499191OS'2397 "" 1000 90 YE 3." 0.25 5.875 0.042553 1no 75.319 9.338 OOסס.0 0 0 0.107085 0 0 0.107085 0 0 0 0 0.107085 0.21417 0.107OS5 0 0 0 0 0 0 0.6425108'2397 635 1000 65 BW 3." 0.375 5.875 0.06363 lno 112,979 13.229 OOסס.0 0 0.302358 0 0 0 0 0 0 0 0.075589 0.151179 0.151179 0 0 0 0 0 0 0 0.680305OS'2397 1005 1205 120 YE 3.46 0.25 5.575 0.042553 1no 75.319 12.451 OOסס.0 0 0 0.080314 0 0 0 0 0 0 0 0 0.160628 0 0.080314 0 0 0 0 0 0.32125508-'23:97 1005 '205 '20 BW 3." 0.375 5.875 0.06363 1770 112.979 18.677 OOסס.0 0.053543 0 0 0 0 0 0 0 0 0 0.160628 0.053543 0.053543 0 0 0 0 0 0 0.3212550909.97 1330 1530 120 BE 3.28 0.94 10,125 0.09284 1470 136.474 22,561 OOסס.0 0.044325 0.265948 0 0 0 0 0 0.044325 0 0 0 0.132974 0 0 0 0 0 0 0 0.4875710909·97 1340 1440 60 BW 3.28 0.94 10.13 0.092794 1470 136.407 11.275 OOסס.0 0 0.709545 0 0 0 0 O· 0 0 0 0 0 0 0 0 0 0 0 0 0.709545000097 1505 1105 120 BW 3.28 0.94 10.13 0.092794 '470 136.407 22.550 ooסס0 0.06Il693 0.620852 0.044347 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.75389109'09·97 1537 1737 120 BE 3.28 0.94 10.13 0.092794 '470 136.407 22.550 OOסס.0 0.13304 0.221733 0 0 0 0 0 0 0 0 0 0.13304 0 0 0 0 0 0 0 0.487512Q9.0097 1725 1925 120 YE 3.28 1 10.13 0.096717 1470 145.114 23.... OOסס.0 0 0.125057 0 0 0 0 0 0.041686 0 0 0.083372 0.250115 0 0.125057 0 0 0 0 0 0.625286090997 1600 2000 120 BE 3.25 0.94 10.13 0.092794 1470 136.407 22.550 OOסס.0 0.177386 0.044347 0 0 0 0 0 0 0 0 0 0.13304 0 0.13304 0 0 0 0 0 0,457812090997 1930 2030 120 YE 3.28 1 10.13 0.098717 1470 145.114 23.... 0.0417 0.166743 0.125057 0.166743 0 0 0 0 0 0.041686 0 0.041686 0.041686 0 0 0.041686 0 0 0.041686 0 0708658OS'1097 1550 1650 60BW 239 1 10.25 0.097561 1670 162,927 13.467 ooסס0 0 0.445537 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.074256 0 0.519794091097 1605 1705 60 YE 239 1 10.254 0.097523 1670 162,863 13.462 OOסס.0 0 0.371426 0.14857 0 0 0 0 0 0 0 0 0 0 0 0.14857 0 0 0.074265 0 0742852091097 1640 1740 60 BE 2.39 0.94 10.25 0.091707 1670 153.151 12.659 ooסס0 0 0.236988 0 0 0 0 0 0 0 0 0.078996 0 0 0.078996 0 0 0 0.078996 0 04739713091097 1725 1825 60 YE 2.39 1 10.25 0.097561 1670 162.927 13467 OOסס.0 0 0.965331 0 0 0 0 0 0 0 0 0 0.148512 0 0,074256 0.074256 0 0 0 0 1.26235609'1097 1745 1945 60 BW 2.39 1 10.25 0.097561 1670 162.927 13.467 OOסס.0 0 1039587 0 0 0 0 0 0 0 0 0 0 0 0.148512 0 0 0 0 0 1.1881091097 1620 1920 60 BE 236 094 10,25 0.091707 1670 153.151 12.659 ooסס0 0 0 0 0 0 0 0 0 0 0 0 0.078996 0 0 0 0 0.078996 0 0 0157992091097 1650 1950 60 YE 2.39 1 1025 0.097561 1670 162.927 13.467 OOסס.0 0 1.113844 0 0 0 0 0 0 0 0 0 0.519794 0 0.519794 0 0 0 0 0 2,153431'09'1):97 1910 2010 60 BW 239 1 10.25 0.097561 1670 162.927 13.467 OOסס.0 0 0 0 0 0 0 0 0 0 0 0 0.074256 0 0.148512 0 0 0 0 0 0.222769

I 09'1097 193' 2035 60 BE 2.39 0.94 10.25 0.091707 1670 153.151 12.659 OOסס.0 0.076996 0.078996 0.078996 0 0 0 0 0 0 0 0 0.157992 0 0.2369ll6 0 0 0 0 0 0631968091197 1350 '450 60 BW 239 1 to.25 0.097561 1620 1n.S61 14.676 OOסס.0 0 0.408817 0 0 0 0 0 0 0 0 0 0 0 0 0.068136 0 0 0 0 0476954

I 0911.97 16t5 1645 30 BE 23. 0.94 10.25 0.091707 '620 166.907 6.898 OOסס.0 0 2.609473 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.60947309'1197 1620 1650 30 BW 239 1 10.25 0.097561 1620 In.561 7.336 OOסס.0 0 2044087 0.272545 0 0 0 0 O' 0 0 0 0 0 0 0 0 0 0 0 2.316532

i

1

1

I

I

!

APPENDIXC

START GATE TOTALOPENING GATES

0.3125 4.43750.3125 4.43750.3125 4.4375

CANAL CFS/NET CF ACREFTFLOW SAMPLE SAMPLECFS

J

J

-1

-j

'J

'Jl

'1

1.6561611.7941750.956893

1.43534

14.4045714.8736616.80533

7.06595413.204063.6541579.1000922.8103235.219171

TOTALACFT

o 1.766488o 2.810323o 2.481643o 0.617653o 5.75447o 5.352995o 5.255668o 7.44553

o 2.047282o 6.26822o 9.678946o 3.412136o 14.25515o 11.67709o 11.22214

o 0.795018o 1.590036o 0.340722o 0.908592

o 0.650375o 3.089281o 1.951125o 0o 2.764094o 2.926668

o 0.325188o 1.625938o 5.203o 1.650952o 1.811759o 0.650375o 2.113719o 0.418098o 1.050606o 1.951125o 2.276313o 1.138156o 2.508589o 0.433583o 3.32839o 5.156545o 3.90225o 3.752163o 3.38195o 2.731575

o 1.026546o 2.414627o 1.906443o 0.31774o 0.31774o 0.439948o 1.906443o 0.794351o 0.733247

~ 41 4.953221 .o 1.173196o 0.802713o 0.733247o 1.173196o 3.018534o 1.548965o 0.953221o 1.191527o 2.025595o 2.065313o 1.270962o 1.025546o 5.27938o 3.071491o 0.31774o 1.376875o 2.579305o 1.78729o 0.689673o 2.740511

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WEACFT

0.7450641.7364822.028229

o0.3588350.1196120.239223

0.3251882.1137191.625938

o1.7885311.138156

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2.06121.82105

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SCHACFT

o0.2022010.779917

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SCT CCTACFT ACFT

6.2270435.6043396.2270435.6043397.4724527.472452

4.3960734.9455833.8465644.396073

6.594116.594116.59411

6.2270437.4724526.8497478.0951567.4724527.4724526.8497476.849747

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6.1502986.1502986.1502986.1502986.1502986.150298

6.8189837.8680574.7208346.2944466.2944466.8189836.2944466.2944466.8189836.294446

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8.804632 0.3407226.804632 0.6814448.804832 0.1135746.804832 0.454296

6.1502986.1502986.1So2986.6628237.1753486.1502986.1502987.1753486.6628239.2254479.2254476.1502987.1753489.2254478.7129227.1753486.1502986.6628237.6878727.687872

175394.4 4.026501225507 5.176929150338 3.451286

191493215429.6167556.3

191493287239.4287239.4287239.4

271250244125271250244125325500325500

271250325500298375352625325500325500298375298375

267907267907267907267907267907267907

267907267907267907

290232.6312558.1

267907267907

312558.1290232.6401860.5401860.5

267907312558.1401860.5379534.9312558.1

267907290232.6334883.7334883.7

297034.9342732.6205639.5

274186274186

297034.9274186274186

297034.9274186

-291lJ34,9

434127.9297034.9297034.9

274186365581.4365581.4365581.4365581.4

274186274186

297034.9297034.9411279.1411279.1411279.1388430.2365581.4342732.6365581.4

74.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.418674.4186

76.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.162797G.1G27976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.1627976.16279

79.7887379.7887379.7887379.7887379.7887379.7887379.78873

74.418674,418674.418674.418674.418674.4186

90.4168790.4168790.4168790.4168790.4168790.41687

1186 83.521131186 83.521131186 83.52113

1133 101.1607 394526.81133 101.1607 364178.61133 101.1607 364178.61133 101.1607 364178.6

1108 106.5385 383538.51108 106.5385 383538.51108 106.5385 383538.51108 106.5385 383538.5

1133113311331133113311331133

128012801280128012801280

12801280128012801280128012801280128012801280128012801280128012801280128012801280

1310131013101310131013101310131013101310I3tO1310131013101310131013101310131013101310131013101310131013101310131013101310

1085108510851085lOBS1085

1085 90.416871085 90.416871085 90.416871085 90.416871085 90.416871085 90.416871085 90.416871085 90.41687

5.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.375

3.753.753.753.753.753.753.753.75

3.53.53.53.5

3.253.253.253.25

3.753.753.753.753.753.75

5.3755.3755.3755.3755.3755.375

5.3756.3755.3755.3755.3755.3755.3755.3755.3755.375..5.3Z55.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.3755.375

4.43754.43754.43754.43754.43754.43754.4375

0.31250.31250.31250.31250.31250.31250.3125

0.31250.31250.31250.31250.31250.3125

0.31250.31250.31250.31250.31250.3125

0.31250.31250.31250.3125

0.31250.31250.31250.3125

0.31250.31250.31250.31250.31250.31250.31250.3125

0.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.3125

0.31250.31250.31250.31250.31250.31250.31250.31250.31250.3125o.:u2S0.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.3125

40 BE45 YE35 BE40 YE60 YE60 BE60 YE

60 YW60 BE60 YE60 YW60 BE60YE

60 YW60 BE60 YE65 YE70 BE60 YW60 YE70 BE65 YW90 YE90 BE60YE70 BW90 YWBS BE70 YE60 BW65 BE75 YE75 YE

65 BW75 BE45 BW60 BW60 YW65 BE60 YE60 BW65 YW60 BEas YE95 BW65 YW65 BE60 YE80 BW80 YW80 BE80 YE60 BW60 YW65 BE65 YE90 BW90 YW90 8E85 YE80 BW75 BE80 YE

65 BE60 YE60 BE60 YW

60 BE60 YW60 BE60 YW

35 BE45 YE30 YE

50 BE45 YE50 BE45 YE60 BE60 YE

50 YW60 BE55 YE65 YW60 BE60 YE55 BE55 YE

DURATION NET

21452130212522552240223023502340

223022302230240024002400

130130130

11201130114012301245125014151430135022202210220021402330231524002430

1025103011351140

10045

145104510501100110511501200120512151305131013151320143014351440144521352140214521502315232023302340

50100110

1535152016401650

220021552300224524152400

2100204521552130224023102345

224522302310

STOP

925930

10351040

221021452240

2020200021102050214022102245

1430142015401550

212021102210220023152300

20352030203021502140213022552245

213021302130230023002300

303030

10151020104011301135114512451300125021102040203520302230221022452315

23552330

100945950955

1005105010551105!!to1200120512101220131013151320132520352040204020452145215022002215233023452350

06117198061171980611719806117198

06113198061131980611319806113198061131980611319806113198

06I12J9ll06I12J9ll06I12J9ll

061141980611419806114198061141980611419806114198

06116/9806116/9806116/9806116/98

0611519806115198061151980611519806115198061151980611519806115198

071211980712119807121198071211980712119807121198

0712219807122198071221980712219807122198071221980712219807122198071221980712219807122198071221980712219807122198071221980712219807122198071221980712219807122198

0712319807123198071231980712319807123198071231980712319807123198071231980712319897~.0712319807123198071231980712319807123198071231980712319807/231980712319807123198071231980712319807123198071231980712319807/231980712319807/2319807123198

07/24/9807124198071241980712419807124198071241980712419807/24198

945950

105511152025203021202130

10501100115512152110212022002210

65 BW70 YE60 BW60 YE45 BW40 YE40 BW40 BE

0.31250.31250.31250.31250.31250.31250.31250.3125

5.55.55.55.55.55.5555.5

12801280128012801280128012801280

72.7272772.7272772.7272772.7272772.7272772.7272772.7272772.72727

283636.4305454.5261818.2261818.2196363.6174545.5174545.5174545.5

6.5113957.0122716.0105186.0105184.5018894.0070124.0070124,007012

oooooo

02495630249563

0153577oooo

0499125il

0.249563

o0285214033275

2162875oooo

ooo

0.166375oo

1 4973750.748688

oo

0.166375ooooo

oo

0166375o

0.4436670249563

1,99650499125

o 1535770285214

oJo

"J.J

o0.142507

o1.164625

oooo

oooooooo

oooo

0.443667ooo

0.1535770.427821

o0.1663750.4436671.2478130.499125O~249563

oooooooo

o 0o 0.142607o 0.166375o 0o 0o 0o 0o 0

oo

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oooooooo

o0.142607

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oooo

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oooooooo

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0.4607311.4260711.1646254.159375

1.3311.9965

4.2425631.9965

._J

GATE TOTAL CANAL CFSINET CF ACREFT SCTOPENING GATES FLOW SAMPLE SAMPLE ACFT

.. CFs

1280 72.727271280 72.727271280 72.727271280 72.727271280 72.72727

196363.6 4.507889130909.1 3.005259ooסס24 5.509642

218181.8 5.008765196363.6 4.507889

185806.5 4.265529185806.5 4.265529185806.5 4.265529185806.5 4.265529247741.9 5.687372206451.6 4.739477206451.6 4.739477

2.5788130.7033135.1576254.9231880.7033135.2748442.531925

3.32754.32575

1.0893.39405

1.774667

2.681251.1343756.2390632.7729170.8725965.0416670.8507813.970313

BRASSY TOTALACFT ACFT

ooooo

oooooooo

ooooooo

CISCOACFT

oooooooo

ooooo

ooooo

ooooooo

BBHACFT

FHMACFT

EMSACFT

ooooo

o0234438

ooooo

oooo

0.174519ooo

PADACFT

ooooo

0.210994o

o0.189063

oooooo

DRUMACFT

o 0.221833o 0o 0o 0o 0

ooooo

ooooooo

oooooooo

SICKLEAN NPACFT ACFT

ooooo

5MBACFT

o 0o 0.189063o 0o 0o 0o 0o 0o 0

ooooo

CARACFT

0.20525o

0.169062ooooo

SNSACFT

ooooo

WEACFT

0206250.1890631.134375

o0.349038

1.5125o

1.134375

SGRACFT

o 0.468875o 0.468875o 0.93775o 0.234438o 0.175828o 0.421988o 0.210994

o 0.443867o 0.33275o 0o 1.9965o 0

GEACFT

oooooo

0.283594o

BBTACFT

BMBACFT

0.2218330.33275

o0.19965

o

0.20525ooooooo

RCSACFT

o 0o 0o 0o 0.234438o 0o 0.210994o 0

REDACFT

ooooo

BSUACFT

ooooooo

oooooooo

ooooo

WSUACFT

oooooooo

ooo

0.19965o

LNSACFT

LNDACFT

1.406525o

1.4066250.93775

o0.6329810.421988

o 0o 0.99825o 0o 0o 0.221833

o 0.20625o 0o 0.945313o 0.504167o 0o 1.008333o 0.283594o 0.567188

WSMACFT

1.5528332.6620.363

0.698951.331

0.234438o

2.3443753.2821250.3516563.164906

1.68795

1.856250.3781252.646875

.1.7645830.1745192.0166670.2835941.985156

SCHACFT

0.221833o

0.1815oo

0.234438oo

0.234438oo

0.210994

ooo

0.252063oooo

FHCACFT

0.443867o

0.5445oo

0.234438ooo

0.1758280.421988

o

o0.1890630.5671880.2520830.1745190.252083

o0.283594

CCTACFT

oo

0.468875oo

0.210994o

0221833oo

0.39930.221833

oo

0.75625oo

0.252083oo

4.8484855.2892565.2892563.9569425.7300283.9569423.5261713.526171

211200230400230400172800249600172800153600153600

6464646464646464

68.817268.817268.817268.817268.817268.817268.8172

1280128012801280128012801280

12801280128012801280128012801280

6.256.256.256.256.256.256.256.25

5.55.55.55.55.5

5.81255.81255.81255.81255.81255.81255.8125

0.31250.31250.31250.31250.3125

0.31250.31250.31250.31250.31250.31250.3125

0.31250.31250.31250.31250.31250.31250.31250.3125

45 YE30 BW55 BE50 YE45 BW

45 BW45 BE45 YE45 BW60 BE50 YE50 BW

55 BW60 BE60 YE45 BW65 BE45 YE40 BW40 YE

DURATION NET

22202240231523202335

2130214022102220225023102325

22152225223023102340233023552405

2045205521252135215022202235

21352210222022302250

21202125213022252235224523152325

START STOP

07125198071251980712519807125198071251980712519807125198

0712619807126198071261980712619807126198071261980712619807126198

07/2419807124198071241980712419807124198

-I

1216 62.68041 169237.1 3.88515 1.029561 0.25739 0.772171 1.0295611216 62.68041 169237.1 3.88515 4.118246 2.316513 2.631294 1.286952

1216 62.680411216 62.680411216 62.680411216 62.680411216 62.680411216 62.680411216 62.680411216 62.680411216 62.680411216 62.680411216 62.680411216 62.680411216 62.6B0411216 62.680411216 62.680411216 62.680411216 62.68041

225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199225649.5 5.180199244453.6 5.611883263257.7 6.043566

o 0o 0o 0o 0o 0o 0o 0o 0o 0o 0o 0o 0.193043o 0o 0o 0o 0o 0o 0o 0o 0o 0

o 2.895641o 4.439984o 2.12347o 0.965214o 1.930428o 1.351299o 0.965214o 4.633026o 2.316513o 0.386086o 5.791283o 3.667813o 5.019112o 13.89908o 3.667813o 3.20748o 8.107796

o 0.965214o 0.890967o 3.309305o 1.158257o 2.316513o 4.826069o 0.992791o 1.323722o 3.47477o 2.316513o 1.544342o 5.019112o 1.853211o 2.779816o 9.897829o 2.895641o 2.895641o 13.47789o 4246941o 3.47477o 8.686924

4.11824613.12691

o 0.5808o 0.5808o 2.1296o 1.7424o 0.5808o 1.1616o 0.714831o 0.3574150_ 1.5488"o 1.7424o 0.7744o 2.5168o 2.0328o 2.065067o 9.52512o 2.7456o 4.224o 6.5472o 3.3792o 1.991314o 8.5184o 2.3232o 1.5488o 6.453333

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1.029561 02.059123 025739

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o 0o 0.1936o 0.5808o 0.5808o 0.1936o 0.3872o 0o 0~ o..tllJ6"o 0o 0.3872o 0.5808o 0.2904o 1.290667o 2.78784o 1.056o 3.168o 1.4784o 1.6896o 0.995657o 3.0976o 0.968o 0.7744o 2839467

0.1930430.1781931.1582570.1930430.3860861.158257

o0.33093

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1.1582573281727

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0.3860860.193043

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0.38608602316510.6949541.6847371.1582571.5443425.8965790.5791281.7373851.930428

5.1801995.6118836.0435665.1801995.1801995.1801996.0435666.0435666.0435665.1801995.1801995.1801994.3168334.3168334.7485165.1801995.1801994.7485165.1801995.1801995.160199

5.1652895.1652895.1652895.1852895.1652895.1652895.595735.595735._5.1652895.1652895.1652893.4436263.8739674.3044084.7348484.7348484.7348484.7348486.0261713.8739675.1652893.8739673.873967

225000225000225000225000225000225000243750243750-225OOll225000225000225000150000168750187500206250206250206250206250262500168750225000168750168750

225649.5244453.6263257.7225649.5225649.5225649.5263257.7263257.7263257.7225649.5225649.5225649.51880412188041.2206845.4225649.5225649.5206845.4225649.5225649.5225649.5

62.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.6804162.68041

62.562.562.662.662.562.562.562.5Q.6

62.562.562.562.562.562.562.562.562.562.562.562.562.562.562.5

121612161216121612161216121612161216121612161216121612161216121612161216121612161216

1250125012501250125012501250125012iO125012501250125012501250125012501250125012501250125012501250

6.06256.0625

6.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.0625

6.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.06256.0625

6256256.256256.256256.25625~

6.256256256256256256.256.256.256256.256.256.256.256.25

0.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.3125

0.31250.31250.31250.31250.31250.31250.31250.3125

-o.342i .0.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.31250.3125

0.31250.3125

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45 BW45 YE

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\ C\~t(; 4-START STOP DURATION NET GATE TOTAL CANAL CFS/NET CF ACREFT SCT CCT FHC SCH WSM LND LNS WSU BSU RED RCS BMB BBT GE SGR WE SNS CAR 5MB SICKLEFIN NP DRUM PAD EMS FHM BBH CISCO BRASSY TOTAL

OPENING GATES FLOW SAMPLE SAMPLE ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT ACFT

CFs

09102198 845 945 60 YE 0.375 6.8125 1216 66.93578 240968.8 5.531883 0 0 0 0 0 0 0 0 0 0 0.18077 0 0 0 0 0 0.18077

09102198 940 1045 65 BW 0.3125 6.8125 1216 55.77982 217541.3 4.994061 0 0.200238 0 0 0 0 0 0 0 0.200238 0 0 0 0 0 0 0.400476

09102198 945 1550 65 YW 0.3125 6.8125 1216 55.77982 217541.3 4.994061 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

09102198 950 1050 60 BE 0.3125 6.8125 1216 55.77982 200807.3 4.609902 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0

09102198 955 1055 60 YE 0.375 6.8125 1216 66.93578 240968.8 5.531883 0 0 0 0.18077 0 0 0 0 0 0 0.18077 0 0.18077 0 0 0 0.542311

09102198 1050 1150 60 BW 0.3125 6.8125 1216 55.77982 200807.3 4.609902 0 0.216924 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.216924

09102198 1100 1157 57 YW 0.3125 6.8125 1216 55.77982 190767 4.379407 0 0.228341 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.228341

09102198 1100 1200 60 BE 0.3125 6.8125 1216 55.77982 200807.3 4.609902 0 0.216924 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0.216924

09102198 1105 1205 60 YE 0.375 6.8125 1216 66.93578 240968.8 5.531883 0 0.18077 0.18077 0 0 0 0 0 0 0 0 0 0 0 0 0 0.361541

~I

Fish Entrainment at the Lower Yellowstone …...I L L Fish Entrainment at the Lower Yellowstone Diversion Dam, Intake Canal, Montana 1996 -1998 Preparedby: Steve Hiebert, Rick Wydoski

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