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FEASIBILITY STUDY TO DETERMINE THE EFFICACY OF USING A WEIR IN

BRIGHT ANGEL CREEK TO CAPTURE BROWN TROUT

FINAL REPORT

Submitted to

Jeffrey Cross, Director

Grand Canyon Science Center

Grand Canyon National Park

Grand Canyon, Arizona 86023

Prepared by

W. Leibfried, L. Johnstone, S. Rhodes, and M. Lauretta

SWCA Environmental Consultants

114 North San Francisco Street, Suite 100

Flagstaff, Arizona 86001

(928) 774-5500

SWCA Project # 6462-091

10 November 2005
ii

TABLE OF CONTENTS

Table of Contents............................................................................................................................ ii

List of Figures................................................................................................................................ iii

List of Tables ................................................................................................................................. iii

INTRODUCTION ...........................................................................................................................1

METHODS ......................................................................................................................................3

Weir Design and Concepts...........................................................................................................3

Materials ......................................................................................................................................3

Field Methods ..............................................................................................................................5

Analysis Methods.........................................................................................................................5

RESULTS ........................................................................................................................................6

DISCUSSION/CONCLUSIONS...................................................................................................10

ACKNOWLEDGEMENTS...........................................................................................................12

LITERATURE CITED ..................................................................................................................13

APPENDIX A: Photographs

APPENDIX B: Public Information Fact Sheet

APPENDIX C: Database Spreadsheet
iii

List of Figures

1. Catch per unit effort of brown trout in the Colorado River, Grand Canyon National Park,

during 2002 (Speas 2002)..........................................................................................................2

2. Map and schematic representation of fish weir in Bright Angel Creek.....................................4

3. Brown and rainbow trout captures during each day of the sampling period at Bright Angel

Creek weir..................................................................................................................................6

4. Water temperature of Bright Angel Creek and number of trout captured .................................7

5. Overnight and daytime catches of trout in Bright Angel Creek between November 18, 2002

and January 21, 2003 .................................................................................................................8

6. Length frequency distribution of brown trout captured in Bright Angel Creek weir between

November 18, 2002 and January 21, 2003 ................................................................................8

7. Length frequency distribution of rainbow trout captured in Bright Angel Creek weir

between November 18, 2002 and January 21, 2003 ..................................................................9

List of Tables

1. Recapture information for brown trout captured in Bright Angel Creek (BAC) weir

between November 18, 2002 and January 21, 2003 ..................................................................9

2. Sex and Reproduction Information for All Fish Captured.......................................................10
"...to promote and regulate the use of the...national parks...which purpose is to conserve the

scenery and the natural and historic objects and the wild life therein and to provide for the

enjoyment of the same in such manner and by such means as will leave them unimpaired for

the enjoyment of future generations."

National Park Service Organic Act, 16 U.S.C.1.

INTRODUCTION

The National Park Service (NPS) has the responsibility of preserving and protecting the natural

resources within Grand Canyon National Park. Over the years as awareness and knowledge have

increased, early management actions have been found to have unforeseen consequences. During

the 1920s, NPS began stocking trout in the side streams of the Colorado River in an effort to

create a sport fishery for park visitors. These tributaries included Bright Angel, Clear, Tapeats,

and Shinumo creeks.

Few systematic studies were conducted on native fish populations in the Colorado River and its

tributaries prior to the completion of Glen Canyon Dam in 1963. However, there is evidence that

once common native fish, including the humpback chub, razorback sucker, speckled dace,

flannelmouth sucker, bluehead sucker, and Colorado pikeminnow, have declined in number or

have been extirpated from the Grand Canyon (Otis 1994).

Bright Angel Creek originates from the Muav limestone near the North Rim at an elevation of

6002 feet (1830 m). It drains an area of 101 square miles of the Colorado Plateau and runs about

12 miles to the confluence of the Colorado River with an average gradient is 296 feet per mile.

Its substrates are dominated by boulders, cobbles and gravel. Mean annual flow is 35 cubic feet

per second (USGS 1979). Seasonal temperature range from 75.2 F. (24 C) in Juily to 41 F (5.0

C) in March (Usher et al. 1984)

Little is known about the fish populations at Bright Angel Creek prior to the introduction of sport

fishes. Rainbow trout were first stocked into the creek in 1923, and stocking continued until

1964 (Carothers and Minckley 1981). Brown trout were also stocked in Bright Angel Creek in

1930 and 1934. In 1920, brook trout were introduced into the tributary but did not reproduce

successfully. Only brown trout and rainbow trout were successful at reproduction, and these

species comprise the recreational fishery that exists today.

A comparison of the fish community composition in Bright Angel Creek between the late 1970s

and 1993 shows a dramatic shift in species dominance. A creel census of Bright Angel Creek by

Carothers and Minckley (1981) found that rainbow trout comprised over 90% of the fish caught

by anglers. Stream surveys by Otis (1994) found brown trout abundance near 90% while

rainbow trout had declined to about 10%. Concurrently, the abundance of speckled dace in

Bright Angel Creek declined from common in the 1970s (Minckley 1978) to very rare in the

1990s (Otis 1994).

Brown trout in the Colorado River prey on young native fishes. Leibfried (1999) and Valdez and

Ryel (1995) found the frequency of fish remains in the stomachs of brown trout to be over ten

times those of rainbow trout. Otis (1994) found a positive correlation in the decline in numbers
2

of native speckled dace with the increased dominance of piscivorous brown trout in Bright Angel

Creek. In other Grand Canyon tributaries where brown trout are less common, speckled dace are

found in large numbers representing all size classes (Allan 1993, Weiss 1993).

Colorado River mainstem monitoring efforts conducted in 2002 by Arizona Game and Fish

Department (AGFD) showed the greatest concentration of brown trout near the mouth of Bright

Angel Creek (Figure 1, Speas 2002). Bright Angel Creek is thought to be the main spawning

ground for brown trout in Grand Canyon.

SWCA Environmental Consultants (SWCA) was retained by Grand Canyon National Park to

install and operate a weir at Bright Angel Creek to remove brown trout. In Bright Angel Creek,

the fish community has been altered toward non-native salmonids to the detriment of its native

fishes. Construction and operation of a temporary weir in Bright Angel Creek provides the

opportunity to determine the effectiveness of removing brown trout from the creek in an effort to

benefit native fishes.

Figure 1. Catch per unit effort of brown trout in the Colorado River, Grand

Canyon National Park, during 2002 (Speas 2002).

.00

200.00

400.00

600.00

800.00

1000.00

1200.00

1400.00

1600.00

1800.00

0 50 100 150 200 250

River Mile

C

P

E ((fis

h/hr)*10)

Bright Angel Creek (RM 87.8)
3

METHODS

WEIR DESIGN AND CONCEPTS

Weirs are barriers built across a stream to divert fish into a trap. They are best suited for

migratory fishes as they move up or down stream. Traditionally they have been used as a tool to

enumerate and assess condition of migratory fishes (Hubert 1996). However, this technique may

also be useful for capturing and removing non-native fishes moving upstream to spawn, such as

the brown trout that migrate from the main channel of the Colorado River to spawning areas in

Bright Angel Creek. This passive method should be an effective way to remove selected nonnative species while not causing harm to any other fish that may enter the weir, such as

flannelmouth suckers, bluehead suckers, or rainbow trout.

Weirs have been most commonly used to study movement of salmonids. Bramblett et al. (2002)

used weirs to determine seasonal relative abundances and movement of juvenile steelhead, coho

salmon and Dolly Varden between small tributaries and mainstem habitats in southeast Alaska.

In a study of Bonneville cutthroat trout in Wyoming, Johnstone (2000) used two-way weirs to

assess immigration and emigration of cutthroat trout in tributary headwater streams in response

to changing summer water quality conditions. In Wyoming, weirs have also been used to

capture non-native brook trout in streams managed for the Colorado River cutthroat trout

(R. Remmick, Wyoming Game and Fish Department, personal communication, 2002).

Weirs have also been used to block or allow the movement of selected fish. The Redlands fish

passageway, constructed in 1996 on the Gunnison River near the confluence of the Gunnison and

Colorado rivers, was built with a manually operated fish trap at the upper end so that largebodied native fish could be manually separated from non-native fish, with native fish released

upstream and non-native fish removed. The fishway works primarily as a passage for endangered

and native fishes, and secondarily as a barrier to upstream movement of non-natives (Burdick

2001, Pfeiffer and Burdick 2001).

MATERIALS

The weir used for this pilot study was modeled after designs used successfully in Wyoming and

Alaska by state Fish and Game departments. The Wyoming Game and Fish Department

generously shared their original weir plans with L. Johnstone and SWCA. The design was

tailored by SWCA to accommodate the channel and flow conditions of Bright Angel Creek.

The weir was constructed by Danny Martinez at PRO, Flagstaff, Arizona.

The weir was constructed as a series of panels approximately 18 inches high by 10 feet long.

Each panel consisted of aluminum rods spaced at 0.5-inch intervals and held in place on an

aluminum frame by 0.5-inch holes on 1.0-inch centers. The rods were an average of 2.5 feet

long and moved up and down freely in the frame allowing continuous contact with the

streambed. This design allowed the rods to drop into the substrate in the case of undercutting or

scour beneath the panel. The panels were hinged end-to-end to create two long panels. One end

of each long panel was attached to a box or “trap” (3' × 4' × 3') designed to capture fish moving

upstream, and the panels were angled from the box downstream to the shore (Figure 2).
4

Figure 2. Map and schematic representation of fish weir in Bright Angel Creek.
5

The panels were secured at a fixed location in the streambed and on the stream bank using

fencing T-posts.

FIELD METHODS

The weir was installed in Bright Angel Creek on November 18, 2002 and remained in place until

January 21, 2003 (see Figure 2; Appendix A). Once fish entered the trap they were unable to

escape and had to be removed by a crewmember. The weir was attended twice per day by at

least one biologist with occasional help from volunteers or National Park Service personnel.

The weir was cleared of accumulated debris during the morning and afternoon fish checks and

also at night when leaves were falling from the cottonwood trees upstream of the weir. Removal

of the weir during the study period was not necessary because no flooding events took place

while the weir was in place. No wildlife or non-target species were observed to be negatively

impacted by the weir, and crewmembers were readily available to educate Park visitors as to the

purpose and need of the weir. A public information fact sheet was prepared and displayed at

various locations to inform the public about the project (Appendix B).

Water temperature in Bright Angel Creek was recorded during each fish check with a hand-held

thermometer. A temperature data logger, programmed to record hourly, was installed on the

weir on December 7, 2002, and therefore did not record temperature data for the whole sampling

period.

All fish caught in the weir were removed to a 5-gallon bucket partially filled with water.

Rainbow trout were weighed to the nearest gram (g), and fork and total length were measured in

millimeters (mm). Each fish was checked for gender and sexual ripeness by applying pressure to

its sides and observing for expulsion of eggs or milt. All data were recorded on standard data

forms. Rainbow trout were then released upstream of the weir.

Brown trout were taken away from public view behind the sewage treatment plant, where they

were killed. A concentrated solution of clove oil was used to euthanize the fish. Gender and

sexual ripeness were recorded, and fork and total length (mm) and weight (g) were measured.

Brown trout were scanned for passive integrated transponder (PIT)-tags and inspected for

adipose fin clips. The fish were then dissected to determine the contents of their stomachs and to

determine sexual condition if not obvious from the initial observation. Stomachs that contained

remains of fish were preserved in ethanol in whirl-paks. The brown trout were then placed in a

container lined with trash bags and were liberally salted to prevent decomposition. The fish

remains were removed from the site by mule train and were disposed of at the south rim.

All pertinent data were recorded on data forms in the field. Data were entered into a spreadsheet

and saved as electronic files (Appendix C).

ANALYSIS METHODS

Data were summarized to assess the seasonal timing of trout movement into Bright Angel Creek.

The association of trout movement with the temperature of the creek, the difference in trout

movement during the day and at night, and the size distribution of brown and rainbow trout
6

moving into the creek, and the size class of rainbow trout moving into Bright Angel Creek were

all analyzed. Recapture data for previously tagged brown trout and sex and sexual condition

ratios of all fish captured were summarized.

RESULTS

SWCA biologists captured 423 brown trout and 188 rainbow trout during the 64 days between

November 18, 2002 and January 21, 2003. Included in the catch was one bluehead sucker,

which was released above the weir. Numbers of brown trout captured peaked between November

24 and December 18. Brown trout numbers showed several peaks during the project period

(Figure 3). As many as 48 brown trout were captured per day, and the greatest captures were

observed in early December. Continuation of the weir into January allowed for the

documentation of the end of the brown trout spawn and the onset of the rainbow trout spawn

(see Figure 3).

Water temperature in Bright Angel Creek varied during the course of this study. Morning

temperatures ranged from a low of 2.4°C to a high of 9.5°C, and afternoon temperatures ranged

from a low of 4.2°C to a high of 10.7°C. Figure 4 shows water temperatures, measured in the

morning between 7:30 and 10:30 a.m., and corresponding trout catches for each day. Morning

measurements were used because they represent the temperature of the stream during the

Brown and Rainbow Trout Captured

Nov. 18, 2002 - Jan. 21, 2003

0

5

10

15

20

25

30

35

40

45

50

11/19/02

11/22/02

11/25/02

11/28/02

12/1/02

12/4/02

12/7/02

12/10/02

12/13/02

12/16/02

12/19/02

12/22/02

12/25/02

12/28/02

12/31/02

1/3/031/6/03

1/9/03

1/12/03

1/15/03

1/18/03

1/21/03

Date

#

of Fish BNT = 423 RBT = 188

Figure 3. Brown and rainbow trout captures during each day of the sampling

period at Bright Angel Creek weir.
7

previous night more accurately than afternoon measurements, and fish movement into the weir

was greater at night than during the day (Figure 5). Although there appears to be a trend toward

increased trout catch with increased temperature, no statistical correlation was found.

Most increases in water temperature corresponded with increases in the number of trout, with the

exception of January 11, 2003 when a large increase in temperature was observed with a slight

decrease in the number of trout captured.

Brown trout captured ranged in size from 210 mm to 620 mm (Figure 6) and rainbow trout

ranged in size from 280 mm to 450 mm (Figure 7).

A total of 15 brown trout was recaptured from previous tagging efforts in the mainstem Colorado

River. Table 1 lists the date and location that each tagged trout was captured and tagged, and

gives the distance from that location to the confluence of Bright Angel Creek. Most trout were

tagged less than 10 miles upstream or downstream of the confluence of Bright Angel Creek.

One trout was tagged 33.9 miles upstream of Bright Angel Creek at river mile 53.9, and one trout

was tagged 32.9 miles downstream of the creek at river mile 120.7. Fish that were recaptured

and the PIT-tag number is not available means that the trout had an adipose fin clipped but no

PIT-tag was found within the fish.

The majority of trout captured were in peak spawning condition (Table 2). Most rainbow and

brown trout were ripe with fully developed gametes, and the majority of each species was

running – when pressure was applied to the exterior of the fish the eggs or milt were expelled.

0

2

4

6

8

10

12

11/19/02

11/22/02

11/25/02

11/28/02

12/1/02

12/4/02

12/7/02

12/10/02

12/13/02

12/16/02

12/19/02

12/22/02

12/25/02

12/28/02

12/31/02

1/3/03

1/6/031/9/03

1/12/03

1/15/03

1/18/03

1/21/03

DATE

T

e

m

p

erature (C)

0

5

10

15

20

25

30

35

40

45

50

55

N

u

m

b

er of Tro

ut

AM Water Temp. Total Fish

Figure 4. Morning water temperature of Bright Angel Creek and number of trout

captured.
8

Brown Trout

0

10

20

30

40

50

60

70

200220240260280300320340360380400420440460480500520540560580600620

TOTAL LENGTH (MM)

N

u

m

b

er of Fis

h

Figure 6. Length frequency distribution of brown trout captured in Bright Angel

Creek weir between November 18, 2002 and January 21, 2003.

Diurnal and Nocturnal Movement of Trout into

Bright Angel Creek

0

5

10

15

20

25

30

11/19/02

11/21/02

11/23/02

11/25/02

11/27/02

11/29/02

12/1/02

12/3/02

12/5/02

12/7/02

12/9/02

12/11/02

12/13/02

12/15/02

12/17/02

12/19/02

12/21/02

12/23/02

12/25/02

12/27/02

12/29/02

12/31/02

1/2/03

1/4/03

1/6/03

1/8/03

1/10/03

1/12/03

1/14/03

1/16/03

1/18/03

1/20/03

Date

N

u

m

b

er of tro

ut overnight catch daytime catch

Figure 5. Overnight and daytime catches of trout in Bright Angel Creek between

November 18, 2002 and January 21, 2003.
9

Table 1. Recapture Information for Brown Trout Captured in Bright Angel Creek (BAC) Weir

between November 18, 2002 and January 21, 2003

Date

Total length

(mm)

Adipose fin

clip

PIT-tag # Date tagged

Location (river

mile) tagged in

Colorado River

Distance from

BAC

11/22/02 282 Yes 43473C540A 04/14/02 RM 91.7 3.9 miles

11/26/02 311 Yes 425C36036F 02/23/02 RM 95.8 8.0 miles

12/03/02 351 Yes N/A N/A N/A N/A

12/03/02 352 Yes N/A N/A N/A N/A

12/04/02 350 Yes N/A N/A N/A N/A

12/06/02 402 Yes 227F1B573B 06/05/00 RM 53.9 33.9 miles

12/06/02 334 Yes 4269185E51 02/22/02 RM 87.8 0.0 miles

12/07/02 308 Yes 416B034B40 06/09/00 RM 87.2 0.6 miles

12/10/02 285 Yes 42402F2941 12/23/00 RM 97.5 9.7 miles

12/10/02 290 Yes 430F511966 04/14/02 RM 93.1 5.3 miles

01/02/03 348 Yes 426D16734D 02/27/02 RM 120.7 32.9 miles

01/15/03 305 Yes 53242B063E 03/14/01 RM 96.8 9.0 miles

Fish with unknown sex data were not sexually mature, or in the case of many rainbow trout,

were not running and no eggs or milt were observed before they were released.

Rainbow Trout

0

2

4

6

8

10

12

14

16

200220240260280300320340360380400420440460480500520540560580600

TOTAL LENGTH (mm)

N

u

m

b

er of Fis

h

Figure 7. Length frequency distribution of rainbow trout captured in Bright

Angel Creek weir between November 18, 2002 and January 21, 2003.
10

Table 2. Sex and Reproduction Information for All Fish Captured*

Species

Number of females

(% Ripe, % Running)

Number of males

(% Ripe, % Running)

Sex unknown

(% Ripe, % Running)

Total

(% Ripe, % Running)

Brown trout

245

(95.9, 64.1)

173

(94.2, 95.7)

5

(0.0, 0.0)

423

(92.9, 79.1)

Rainbow trout

40

(97.5, 85.0)

93

(100, 96.8)

55

(0.0, 0.0)

188

(70.2, 65.9)

Bluehead

sucker

0

(0.0, 0.0)

0

(0.0, 0.0)

1

(0.0, 0.0)

1

(0.0, 0.0)

*Ripe fish contained mature eggs or gametes; running fish expressed those gametes when handled.

DISCUSSION/CONCLUSIONS

The highest concentration of brown trout in the Colorado River occurs near the confluence of

Bright Angel Creek (Speas 2002). It is likely that Bright Angel Creek is the main spawning

tributary for brown trout in the Grand Canyon. Over 400 brown trout were caught moving into

Bright Angel Creek between November 18, 2002 and January 16, 2003 (see Figure 3), the

majority of which were in peak spawning condition (see Table 2). The movement of spawning

brown trout into the creek may have begun prior to the sampling period, as indicated by the

steady number of ripe brown trout captured at the start of the period. One brown trout caught in

Bright Angel Creek had traveled over 32 miles upstream from the place in the Colorado River

where it was tagged in late February 2002 (see Table 1). These data support the hypothesis that

Bright Angel Creek is the major spawning area for brown trout in the Colorado River in Grand

Canyon.

More trout were captured overnight than during the day for each of the days sampled (see

Figure 5). These data imply that trout preferentially move into Bright Angel Creek throughout

the night. This may be due to greater activity of trout in the Colorado River at night and better

protection from predators such as bald eagles and osprey, which were observed during the study

period along Bright Angel Creek. Similar nocturnal movements were observed in Nankoweap

Creek for rainbow trout (Leibfried and Montgomery 1993).

Our stomach content analysis revealed little evidence of fish remains in brown trout stomachs.

However, most stomachs were empty, a typical condition of spawning fish. Mainstem studies

by the Grand Canyon Monitoring and Research Center and BIO/WEST (USGS unpublished

data, Valdez and Ryel 1995) have shown evidence of fish remains in brown trout stomachs.

Stomach analyses from 2000 documented piscivory in 8% of brown trout sampled from the

Colorado River in Grand Canyon and in 21% of brown trout from the Little Colorado River

reach of the mainstem (Rowell 2001). There is little doubt that brown trout are predatory on

native fishes and are a contributing factor in the decline of native fishes of the Colorado River

(Valdez and Ryel 1995).

The weir proved to be an effective method for capturing adult brown trout that were migrating

into Bright Angel Creek to spawn. Because the weir was not installed until November 18, it is
11

likely that some brown trout had already moved upstream to spawn. Earlier installation is

recommended to capture and remove a greater number of brown trout from Bright Angel Creek

and thereby increase the effectiveness of the weir.

Additional data collection will be necessary to determine if removal of brown trout in Bright

Angel Creek will benefit native fishes. A baseline inventory of both native and non-native fish

should be undertaken as soon as possible to determine current populations within Bright Angel

Creek and enable an evaluation of the effects of brown trout removal on the native fish

community. Studies conducted by Otis (1994) are more than 10 years old and are outdated.

The effect of Bright Angel Creek trout removal may also be detected by the mainstem

monitoring and removal programs coordinated by GCMRC.

Although it is unlikely that every brown trout would be removed from the system, a reduction in

numbers is possible, as shown by the intensive salmonid removal effort concentrated at the

confluence of the Colorado River and the Little Colorado River (Coggins 2003). Based on this

first year’s weir-removal experiment, it appears that the Bright Angel Creek weir could be a very

efficient and cost effective way of removing non-native salmonids that are migrating into Bright

Angel Creek to spawn. The removal of migrating fish, coupled with removal of resident brown

trout in Bright Angel Creek, could provide an opportunity for the recovery the native fish

community in the creek and aid mainstem recovery efforts for by reducing predation pressure.

Recommendations

Based on the results of this study, SWCA recommends the following actions for future activities

in Bright Angel Creek:

• Earlier installation of the weir to coincide with spawning period of brown trout will allow

for a higher number of captures.

• Fish community monitoring in Bright Angel Creek will provide a baseline to determine

the effectiveness of future trout reductions efforts.

• Population estimates of salmonids and native fish in Bright Angel Creek will provide

baseline population levels to determine the effect of trout removal.

• Coordination with main channel fish monitoring programs (GCMRCand AZGF) will

provide for data exchange and cooperation in a collaborative effort for trout reduction.

• Captured trout can be used for additional data collection, such as the use of otolith

chemical analyses for determining fish movements and age and growth studies

(GCMRC).
12

ACKNOWLEDGEMENTS

The following were instrumental in making this feasibility study a success and without their help

it could not have been possible:

• Bureau of Reclamation, Upper Colorado Region for initial funding

• Grand Canyon National Park Staff for funding and logistical support

• SWCA volunteers

• Phantom Ranch Staff
13

LITERATURE CITED

Allan, N.L. 1993. Distribution and abundance of fishes in Shinumo Creek in the Grand Canyon.

M.S. Thesis, University of Arizona, Tucson.

Bramblett, R.G., M. Bryant, B. Wright, and R. White. 2002. Seasonal use of small tributary and

main-stem habitats by juvenile steelhead, coho salmon, and Dolly Varden in a

Southeastern Alaska drainage basin. Transactions of the American Fisheries Society

131:498–506.

Burdick, B.D. 2001. Five-year evaluation of fish passage at the Redlands Diversion Dam on the

Gunnison River near Grand Junction, Colorado: 1996–2001. Recovery Program Project

Number CAP-4b. Final Report prepared for the Recovery Implementation Program for

Endangered Fishes in the Upper Colorado River Basin. U.S. Fish and Wildlife Service,

Colorado River Fishery Project, Grand Junction, Colorado. 57pp. + appendices.

Carothers, S.W., and C.O. Minckley. 1981. A survey of the aquatic flora and fauna of the Grand

Canyon. Final Report. U. S. Department of the Interior, Water and Power Resources

Service, Lower Colorado Region, Boulder City, Nevada.

Coggins, L.C. 2003. A report to the Adaptive Management Work Group on results of the

mechanical removal of non-native salmonids near the mouth of the Little Colorado River,

Grand Canyon, AZ. Prepared by the Grand Canyon Monitoring and Research Center,

Flagstaff, Arizona.

Hubert, W.A. 1996. Passive capture techniques. Pages 157–182 in Murphy, B.R., and D.W.

Willis, editors. Fisheries techniques, 2

nd

edition. American Fisheries Society, Bethesda,

Maryland.

Johnstone, H.C. 2000. Temperature tolerance and summer habitat conditions of Bonneville

Cutthroat trout, in the Thomas Fork of the Bear River Wyoming. M.S. Thesis, University

of Wyoming, Laramie.

Leibfried, W.C. 1999. Fish interactions in Grand Canyon: An historical perspective with future

implications. Restoring Native Fish to the Lower Colorado River: Interactions of Native

and Non-native Fishes. A Symposium and Workshop. U.S. Fish and Wildlife Service

Region 2. July 13–14, 1999, Las Vegas, Nevada.

Leibfried, W.C. and W.L. Montgomery 1993. Regulated flows, trout spawning, and abundance

of bald eagles on the Colorado River, Grand Canyon National Park. Proceedings of the

First Biennial Conference on Research in the Colorado Plateau National Parks, Northern

Arizona University, Flagstaff, Arizona.

Minckley, C.O. 1978. A report on aquatic investigations conducted during 1976, 1977 on

Bright Angel, Phantom and Pipe Creeks, Grand Canyon National Park, Coconino

County, Arizona.
14

Otis, E.O. 1994. Distribution, abundance, and composition of fishes in Bright Angel and Kanab

Creeks, Grand Canyon National Park, Arizona. M.S. Thesis, University of Arizona,

Tucson.

Pfeifer, F.K., and B.D. Burdick. 2001. Evaluation of the effectiveness of the fish passage

structure at the Redlands Diversion Dam and flow requirements in the 2.3-mile reach of

the lower Gunnison River. Recovery Program Project Number CAP-4b. Annual Report

prepared for the Recovery Implementation Program for Endangered Fishes in the Upper

Colorado River Basin. U.S. Fish and Wildlife Service, Colorado River Fishery Project,

Grand Junction, Colorado, 6pp. + appendices.

Rowell, K. 2001. Temporal and Spatial Snapshots of Brown Trout Piscivory and Diet

Composition during June–December 2000 in Grand Canyon Corridor of the Colorado

River. Grand Canyon Monitoring and Research Center, Flagstaff, Arizona.

Speas, D.W. 2001. Salmonid population size in the Colorado River, Grand Canyon, Arizona.

Fishery Fact Sheet. Arizona Game and Fish Department. Prepared for the Grand Canyon

Monitoring and Research Center, Flagstaff, AZ.

Speas, D.W. 2002. Annual Report. Arizona Game and Fish Department. Prepared for the

Grand Canyon Monitoring and Research Center, Flagstaff, AZ.

Usher, H.D., W.C. Leibfried, D.W. Blinn, and S.W. Carothers. 1984. A survey of present and

future impacts of water depletions and additions on the aquatic and terrestrial habitats of

Roaring Springs, Bright Angel, Garden and Pipe Creeks, Grand Canyon National Park.

Museum of Northern Arizona report Submitted to Western Region, National Park

Service, San Francisco, CA.

Valdez, R.A., and R.J. Ryel. 1995. Life history and ecology of the humpback chub (Gila cypha)

in the Colorado River, Grand Canyon, Arizona. Final Report to the Bureau of

Reclamation, Salt Lake City, Utah, Contract No. 0-CS-40-09110. BIO/WEST Report

No. TR-250-08. BIO/WEST, Inc., Logan, Utah.

Weiss, S.J. 1993. Spawning, movement and population structure of flannelmouth sucker in the

Paria River. M.S. Thesis, University of Arizona, Tucson.
APPENDIX A

Photographs
View of Bright Angel Creek from Kaibab trail.

Bright Angel Creek weir looking downstream.
Upstream view of weir in place.

Weir in place, with trap lid open.
Bright Angel Creek weir from footbridge.

Bright Angel Creek weir from footbridge.
Fish being removed from weir.

Lainie Johnstone removing fish from weir.
Underwater photograph of rainbow and brown trout in weir.

Brown trout expelling eggs.
APPENDIX B

Public Information Fact Sheet
BRIGHT ANGEL CREEK - TEMPORARY FISH WEIR

PURPOSE AND NEED: The National Park Service is charged with preserving and

protecting the natural resources within Grand Canyon. Active, hands-on management of

resources is at times required to achieve this goal. In Bright Angel Creek, the fish

community has been altered towards non-native salmonids, to the detriment of its native

fishes. Construction and operation of a temporary weir in Bright Angel Creek will provide

the opportunity to determine if removal of brown trout will benefit native fish survival in

Bright Angel Creek.

FAQs:

What is a weir? A weir is a barrier to fish movement with an attached cage to capture

and hold live fish.

Why are the trout being removed? Fish surveys have shown declines in native fishes

concurrent with increases in brown trout. Brown trout are predators on the young and

small native fish. Removal may increase the survival and numbers of native fish in

BAC, and help to restore the fish community.

What happens to the fish? The trout are taken from the cage and euthanized. They are

measured and weighed, and examined for tags or marks. They are disposed of outside

the park.

What about the rainbow trout? Rainbow trout will not be removed, for this study.

What are the native fish? The native fishes include the flannelmouth sucker, bluehead

sucker, and speckled dace. The endangered humpback chub may once have lived in

Bright Angel Creek; they still are occasionally found in the Colorado River nearby.

Who is responsible for this project? The National Park Service is funding this project.

The contract to conduct the work and analyze the results was awarded to SWCA, an

environmental consulting firm based in Flagstaff Arizona.

CONTACTS:

SWCA, INC., ENVIRONMENTAL CONSULTANTS

FLAGSTAFF, AZ 86001

928-774-5500

GRAND CANYON NATIONAL PARK

JEFFREY CROSS

GRAND CANYON SCIENCE CENTER

DIRECTOR

928-638-7759

FLANNELMOUTH SUCKER

HUMPBACK CHUB
APPENDIX C

Database Spreadsheet
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

1 1 MT, BL, JC 11/18/2002 18:30 11/19/2002 9:00 7 RBT 296 273 - - - - N - 1 2 MT, BL, JC 11/18/2002 18:30 11/19/2002 9:00 7 BNT 295 282 - F R NR N - 1 3 MT, BL, JC 11/18/2002 18:30 11/19/2002 9:00 7 BNT 337 325 - M R NR N - 2 4 MT, BL, JC 11/19/2002 9:00 11/19/2002 16:30 9.1 BNT 265 251 - M R NR N - 2 5 MT, BL, JC 11/19/2002 9:00 11/19/2002 16:30 9.1 BNT 243 230 - F R NR N - 2 6 MT, BL, JC 11/19/2002 9:00 11/19/2002 16:30 9.1 BNT 252 239 - F R NR N - 3 7 MT, BL, JC 11/19/2002 16:30 11/20/2002 9:30 7.3 BNT 441 425 - F R NR N - 3 8 MT, BL, JC 11/19/2002 16:30 11/20/2002 9:30 7.3 BNT 365 350 - F R NR N - 3 9 MT, BL, JC 11/19/2002 16:30 11/20/2002 9:30 7.3 BNT 253 240 - F R NR N - 4 10 MT, BL, JC 11/20/2002 9:30 11/20/2002 16:15 9 BNT 226 212 - F R NR N - 5 11 MT,JW 11/20/2002 16:15 11/21/2002 8:50 - BNT 259 245 - M R NR N - 5 12 MT,JW 11/20/2002 16:15 11/21/2002 8:50 - BNT 304 289 - F R NR N - 5 13 MT,JW 11/20/2002 16:15 11/21/2002 8:50 - BNT 265 250 - M R NR N - 6 14 LJ 11/21/2002 8:50 11/21/2002 16:45 10.2 BNT 231 217 - M R NR N - 7 15 LJ, JW 11/21/2002 16:45 11/22/2002 10:20 9 RBT 362 - M R NR N - 7 16 LJ, JW 11/21/2002 16:45 11/22/2002 10:20 9 BNT 465 445 - F R NR N - 7 17 LJ, JW 11/21/2002 16:45 11/22/2002 10:20 9 BNT 307 290 - M R NR N - 7 18 LJ, JW 11/21/2002 16:45 11/22/2002 10:20 9 BNT 267 257 - M R NR N - 7 19 LJ, JW 11/21/2002 16:45 11/22/2002 10:20 9 BNT 282 274 - F R NR Y 4347 20 LJ, JW 11/21/2002 16:45 11/22/2002 10:20 9 BNT 255 240 - M R NR N - 8 - LJ 11/22/2002 10:20 11/22/2002 17:00 10.3 NO FISH CAUGHT - - - - - - 9 21 LJ, MG 11/22/2002 17:00 11/23/2002 9:30 8.5 BNT 414 400 497 M R RU N - 9 22 LJ, MG 11/22/2002 17:00 11/23/2002 9:30 8.5 RBT 367 346 297 M R RU N - 9 23 LJ, MG 11/22/2002 17:00 11/23/2002 9:30 8.5 BNT 301 289 195 F R NR N - 9 24 LJ, MG 11/22/2002 17:00 11/23/2002 9:30 8.5 BNT 250 235 - M R RU N - 9 25 LJ, MG 11/22/2002 17:00 11/23/2002 9:30 8.5 BNT 262 255 129 M R RU N - 

10 26 LJ, MG 11/23/2002 9:30 11/23/2002 17:30 10.3 BNT 255 244 117 F R NR N - 11 27 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 267 254 122 F R NR N - 11 28 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 252 239 109 M R RU N - 11 29 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 RBT 335 314 250 M R RU N - 11 30 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 414 400 513 M R RU N - 11 31 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 298 282 154 F R RU N - 11 32 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 254 241 106 F R RU N - 11 33 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 366 350 301 F R NR N - 11 34 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 284 268 167 M R NR N - 11 35 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 292 280 142 F R NR N - 11 36 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 320 307 221 F R NR N - 11 37 LJ, MG 11/23/2002 17:30 11/24/2002 10:00 9.5 BNT 228 217 82.2 M R NR N - 12 38 LJ, MG 11/24/2002 10:00 11/24/2002 17:00 10.2 RBT 410 395 500 F R RU N - 13 39 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 RBT 389 369 464 M R RU N - 13 40 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 300 285 200 M R RU N - 13 41 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 RBT 388 364 315 M R RU N - 13 42 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 351 335 282 F R RU N - 13 43 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 416 398 506 M R NR N - 13 44 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 345 333 306 F R NR N - 13 45 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 307 295 195 F R NR N - 13 46 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 380 363 400 M R NR N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

13 47 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 298 282 170 M R NR N - 13 48 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 266 251 130 F R NR N - 13 49 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 272 259 132 F R NR N - 13 50 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 308 291 200 M R NR N - 13 51 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 400 381 460 F R NR N - 13 52 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 314 297 190 M R NR N - 13 53 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 314 298 205 F R NR N - 13 54 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 392 375 494 F R NR N - 13 55 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 246 233 95 F R NR N - 13 56 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 279 260 162 F R NR N - 13 57 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 275 260 135 M R NR N - 13 58 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 286 272 165 M R NR N - 13 59 LJ, MG, F 11/24/2002 17:00 11/25/2002 10:00 8.5 BNT 261 248 120 F R NR N - 14 60 LJ, MG 11/25/2002 10:00 11/25/2002 17:00 - BNT 292 277 197 M R NR N - 14 61 LJ, MG 11/25/2002 10:00 11/25/2002 17:00 - BNT 303 287 201 F R RU N - 15 62 LJ, MG 11/25/2002 17:00 11/26/2002 9:00 6.7 BNT 311 295 190 F R NR Y 42515 63 LJ, MG 11/25/2002 17:00 11/26/2002 9:00 6.7 BNT 366 352 390 M R RU N - 15 64 LJ, MG 11/25/2002 17:00 11/26/2002 9:00 6.7 BNT 416 400 564 M R RU N - 15 65 LJ, MG 11/25/2002 17:00 11/26/2002 9:00 6.7 BNT 295 276 170 F R RU N - 15 66 LJ, MG 11/25/2002 17:00 11/26/2002 9:00 6.7 BNT 262 250 132 F R NR N - 15 67 LJ, MG 11/25/2002 17:00 11/26/2002 9:00 6.7 BNT 265 251 131 M R RU N - 16 - LJ 11/26/2002 9:00 11/26/2002 16:05 7.5 NO FISH CAUGHT - - - - - - 17 68 ML 11/26/2002 16:10 11/27/2002 8:40 6.1 BNT 362 350 474 M R RU N - 17 69 ML 11/26/2002 16:10 11/27/2002 8:40 6.1 BNT 323 310 320 M R RU N - 17 70 ML 11/26/2002 16:10 11/27/2002 8:40 6.1 BNT 276 261 179 F R RU N - 17 71 ML 11/26/2002 16:10 11/27/2002 8:40 6.1 BNT 261 247 151 F R NR N - 18 - ML 11/27/2002 8:45 11/27/2002 16:10 7.9 NO FISH CAUGHT - - - - - - 19 72 ML 11/27/2002 16:10 11/28/2002 8:40 6.3 BNT 268 254 173 F R NR N - 19 73 ML 11/27/2002 16:10 11/28/2002 8:40 6.3 BNT 254 242 160 F R NR N - 19 74 ML 11/27/2002 16:10 11/28/2002 8:40 6.3 BNT 274 259 162 M R RU N - 19 75 ML 11/27/2002 16:10 11/28/2002 8:40 6.3 BNT 252 240 142 F R NR N - 19 76 ML 11/27/2002 16:10 11/28/2002 8:40 6.3 BNT 246 231 120 F R NR N - 20 77 ML 11/28/2002 8:50 11/28/2002 16:10 8 BNT 266 250 146 M R RU N - 20 78 ML 11/28/2002 8:50 11/28/2002 16:10 8 BNT 311 297 281 M R RU N - 21 79 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 BNT 485 468 977 M R RU N - 21 80 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 BNT 357 345 442 F R NR N - 21 81 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 RBT 371 350 424 M R RU N - 21 82 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 RBT 359 340 390 M R NR N - 21 83 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 BNT 363 348 489 M R RU N - 21 84 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 BNT 355 341 424 F R RU N - 21 85 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 BNT 262 248 150 F R RU N - 21 86 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 BNT 248 236 131 M R RU N - 21 87 ML 11/28/2002 16:15 11/29/2002 8:40 7.1 BNT 302 283 223 M R NR N - 22 88 ML 11/29/2002 8:40 11/29/2002 16:25 8.7 BNT 314 298 251 F R RU N - 23 89 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 RBT 441 420 752 F R C N - 23 90 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 RBT 370 350 441 M R RU N - 23 91 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 366 344 399 F R C N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

23 92 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 351 348 399 M R NR N - 23 93 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 352 338 411 M R NR N - 23 94 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 312 300 291 F R RU N - 23 95 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 299 284 216 F R NR N - 23 96 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 255 240 132 M R RU N - 23 97 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 303 288 250 F R NR N - 23 98 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 283 270 184 M R RU N - 23 99 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 255 241 143 M R RU N - 23 100 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 295 280 210 F R RU N - 23 101 ML 11/29/2002 16:30 11/30/2002 8:35 8.5 BNT 265 250 139 F R RU N - 24 - ML 11/30/2002 8:50 11/30/2002 16:00 9.9 NO FISH CAUGHT - - - - - - 25 102 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 264 250 411 F R NR N - 25 103 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 421 403 678 F R NR N - 25 104 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 412 398 600 F R NR N - 25 105 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 468 452 927 F R NR N - 25 106 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 372 360 459 F R NR N - 25 107 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 339 325 353 F NR NR N - 25 108 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 329 314 309 F R NR N - 25 109 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 RBT 342 321 361 F R NR N - 25 110 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 321 308 278 F R RU N - 25 111 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 RBT 332 311 319 M R RU N - 25 112 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 320 308 309 F R NR N - 25 113 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 288 272 202 M NR NR N - 25 114 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 304 291 208 F R NR N - 25 115 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 310 297 267 F R NR N - 25 116 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 344 330 320 F R NR N - 25 117 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 300 291 243 M R RU N - 25 118 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 261 248 162 F R NR N - 25 119 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 331 317 291 M NR NR N - 25 120 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 318 303 258 M R RU N - 25 121 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 276 262 175 M R NR N - 25 122 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 258 246 163 F R NR N - 25 123 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 270 259 178 M R RU N - 25 124 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 250 239 145 F R NR N - 25 125 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 257 246 148 M R RU N - 25 126 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 262 251 159 F R NR N - 25 127 ML 11/30/2002 16:05 12/1/2002 8:30 9.5 BNT 236 223 117 M R RU N - 26 128 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 462 452 938 F R RU N - 26 129 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 284 270 215 M R RU N - 26 130 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 278 263 184 M R RU N - 26 131 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 296 284 199 F R NR N - 26 132 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 335 320 332 M R NR N - 26 133 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 263 248 147 M R RU N - 26 134 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 237 226 131 F R NR N - 26 135 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 276 260 177 F R NR N - 26 136 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 258 243 148 F NR NR N - 26 137 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 265 254 168 F R NR N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

26 138 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 301 287 252 F R NR N - 26 139 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 265 251 149 F R RU N - 26 140 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 258 244 156 M R RU N - 26 141 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 263 247 158 M R RU N - 26 142 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 274 262 186 M R RU N - 26 143 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 267 252 155 M R RU N - 26 144 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 311 296 247 F R NR N - 26 145 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 341 333 332 F R NR N - 26 146 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 329 316 306 F R NR N - 26 147 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 258 248 148 F R NR N - 26 148 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 248 235 133 F R NR N - 26 149 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 275 264 189 F R NR N - 26 150 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 208 199 92 M R RU N - 26 151 ML 12/1/2002 8:50 12/1/2002 16:00 10.7 BNT 240 230 118 M R RU N - 27 152 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 366 351 461 M R RU N - 27 153 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 396 383 649 F R NR N - 27 154 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 366 352 462 F R NR N - 27 155 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 306 293 242 F NR NR N - 27 156 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 348 332 363 F R NR N - 27 157 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 399 381 522 F R NR N - 27 158 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 321 306 276 F R NR N - 27 159 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 398 383 555 F R RU N - 27 160 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 280 266 190 F R NR N - 27 161 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 323 307 288 F NR NR N - 27 162 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 380 366 523 F R NR N - 27 163 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 298 283 208 M R RU N - 27 164 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 255 242 142 F R NR N - 27 165 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 354 340 394 F R RU N - 27 166 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 280 265 186 M R NR N - 27 167 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 265 252 161 F R NR N - 27 168 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 269 254 170 F NR NR N - 27 169 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 285 273 193 M R RU N - 27 170 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 285 273 210 F R NR N - 27 171 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 266 254 155 F R NR N - 27 172 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 277 264 189 F R NR N - 27 173 ML 12/1/2002 16:00 12/2/2002 8:40 7.9 BNT 287 274 190 F R NR N - 28 174 ML 12/2/2002 8:40 12/2/2002 16:00 - BNT 255 242 155 F R NR N - 28 175 ML 12/2/2002 8:40 12/2/2002 16:00 - BNT 278 266 187 M R RU N - 28 176 ML 12/2/2002 8:40 12/2/2002 16:00 - BNT 250 240 141 M R RU Y NO 28 177 ML 12/2/2002 8:40 12/2/2002 16:00 - BNT 272 258 168 M R RU N - 28 178 ML 12/2/2002 8:40 12/2/2002 16:00 - BNT 274 260 177 F R NR N - 28 179 ML 12/2/2002 8:40 12/2/2002 16:00 - BNT 268 256 161 F R NR N - 28 180 ML 12/2/2002 8:40 12/2/2002 16:00 - BNT 294 279 204 M R RU N - 29 181 LJ 12/2/2002 16:00 12/3/2002 13:30 - RBT 373 343 450 M R NR N - 29 182 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 449 434 738 F R RU N - 29 183 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 351 335 378 F R RU Y NO 29 184 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 352 338 420 F R RU Y NO 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

29 185 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 305 289 261 F R RU N - 29 186 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 303 286 228 F R RU N - 29 187 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 258 245 156 - - NR N - 29 188 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 400 384 539 F R RU N - 29 189 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 379 365 470 F R RU N - 29 190 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 378 360 486 M - NR N - 29 191 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 360 350 442 F R RU N - 29 192 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 320 304 259 M NR NR N - 29 193 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 295 280 202 - - NR - - 29 194 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 293 277 204 F R RU N - 29 195 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 282 269 194 M R RU N - 29 196 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 255 238 142 M R RU N - 29 197 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 275 260 188 F R RU N - 29 198 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 230 223 96 F R RU N - 29 199 LJ 12/2/2002 16:00 12/3/2002 13:30 - BNT 269 255 128 M R RU N - 30 - LJ, JB 12/3/2002 13:30 12/3/2002 17:00 - NO FISH CAUGHT - - - - - - 31 200

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 550 532 1850 F R RU N - 

31 201

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 320 308 308 F R RU N - 

31 202

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 340 335 358 M R RU N - 

31 203

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 325 309 322 M R RU N - 

31 204

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 425 414 735 M R NR N - 

31 205

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 318 307 262 M R RU N - 

31 206

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 260 251 158 F R NR N - 

31 207

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 298 285 217 F R NR N - 

31 208

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 RBT 295 277 220 M R RU N - 

31 209

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 251 237 136 F R NR N - 

31 210

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 246 236 22 F R RU N - 

31 211

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 466 454 1000 F R RU N - 

31 212

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 290 280 216 M R RU N - 

31 213

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 411 401 595 F R RU N - 

31 214

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 463 451 1075 F R NR N - 

31 215

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 266 251 167 M R RU N - 

31 216

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 295 282 219 M R NR N - 

31 217

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 295 278 212 F R NR N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

31 218

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 318 302 268 M R RU N - 

31 219

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 350 334 448 F R NR Y - 

31 220

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 308 294 268 F R NR N - 

31 221

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 307 291 246 F R NR N - 

31 222

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 334 324 333 F R NR N - 

31 223

LJ, JB, JW,

WV 12/3/2002 17:00 12/4/2002 8:30 7.5 BNT 355 339 408 F R NR N - 

32 224 LJ, JB 12/4/2002 8:30 12/4/2002 17:15 8.9 BNT 268 259 178 M R RU N - 32 225 LJ, JB 12/4/2002 8:30 12/4/2002 17:15 8.9 BNT 318 305 249 M R NR N - 32 226 LJ, JB 12/4/2002 8:30 12/4/2002 17:15 8.9 BNT 261 248 145 M NR NR N - 33 227 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 612 597 2322 M R RU N - 33 228 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 527 512 1407 M R RU N - 33 229 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 493 479 1243 M R RU N - 33 230 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 483 469 1187 F R NR N - 33 231 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 472 455 902 M R RU N - 33 232 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 365 349 494 M R RU N - 33 233 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 405 391 643 M R RU N - 33 234 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 315 303 257 F R RU N - 33 235 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 RBT 360 340 371 F R RU N - 33 236 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 302 283 219 F R RU N - 33 237 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 305 291 216 F R RU N - 33 238 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 279 263 188 M R RU N - 33 239 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 261 247 155 F R RU N - 33 240 LJ, JB 12/4/2002 17:15 12/5/2002 9:00 7.1 BNT 258 244 144 M R RU N - 34 241 LJ,JB 12/5/2002 9:15 12/5/2002 16:15 8.7 BNT 258 247 129 M R RU N - 34 242 LJ,JB 12/5/2002 9:15 12/5/2002 16:15 8.7 BNT 263 251 167 F R RU N - 35 243 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 612 591 2098 M R RU N - 35 244 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 425 413 863 F R RU N - 35 245 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 370 358 465 F R RU N - 35 246 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 241 228 114 M R RU N - 35 247 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 250 236 116 F R RU N - 35 248 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 402 390 626 F R RU Y 22735 249 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 298 288 232 F R RU N - 35 250 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 375 362 581 M R RU N - 35 251 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 334 324 361 M R RU Y 42635 252 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 307 295 229 F R RU N - 35 253 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 414 400 740 M R RU N - 35 254 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 295 284 224 F R RU N - 35 255 LJ,JB 12/5/2002 16:15 12/6/2002 9:00 7.7 BNT 272 258 181 F R RU N - 36 256 LJ,JB 12/6/2002 9:15 12/6/2002 16:45 9.1 BNT 249 237 149 F R RU N - 36 257 LJ,JB 12/6/2002 9:15 12/6/2002 16:45 9.1 BNT 269 253 169 F R RU N - 36 258 LJ,JB 12/6/2002 9:15 12/6/2002 16:45 9.1 BNT 277 263 185 M R RU N - 36 259 LJ,JB 12/6/2002 9:15 12/6/2002 16:45 9.1 BNT 239 225 123 M R RU N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

36 260 LJ,JB 12/6/2002 9:15 12/6/2002 16:45 9.1 BNT 257 243 143 F R RU N - 36 261 LJ,JB 12/6/2002 9:15 12/6/2002 16:45 9.1 BNT 277 256 180 M R RU N - 37 262 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 RBT 401 377 526 F R RU N - 37 263 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 RBT 353 331 385 M R RU N - 37 264 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 RBT 356 340 367 M R RU N - 37 265 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 BNT 266 251 153 F R RU N - 37 266 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 BNT 308 293 230 F R NR Y 41637 267 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 BNT 307 292 276 F R NR N - 37 268 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 BNT 286 274 206 F R NR N - 37 269 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 BNT 261 246 163 M R RU N - 37 270 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 BNT 275 260 180 M R RU N - 37 271 LJ,JB 12/6/2002 16:50 12/7/2002 7:35 7.3 BNT 254 240 142 M NR NR N - 38 - ML,JB 12/7/2002 7:35 12/7/2002 16:00 9.3 NO FISH CAUGHT - - - - - - 39 272 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 372 361 509 F R RU N - 39 273 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 RBT 383 363 520 M R RU N - 39 274 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 RBT 393 367 652 M R RU N - 39 275 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 RBT 395 375 564 M R RU N - 39 276 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 403 387 572 F R RU N - 39 277 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 RBT 385 369 468 F R RU N - 39 278 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 RBT 333 315 318 M R RU N - 39 279 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 RBT 425 403 736 M R RU N - 39 280 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 279 266 178 F R RU N - 39 281 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 295 280 198 M R RU N - 39 282 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 320 307 294 F R RU N - 39 283 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 311 296 262 F R RU N - 39 284 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 RBT 318 299 270 F R RU N - 39 285 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 286 273 190 F R RU N - 39 286 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 295 282 211 F R NR N - 39 287 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 322 308 267 F R NR N - 39 288 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 272 256 182 F R NR N - 39 289 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 269 254 155 M R RU N - 39 290 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 288 272 211 M R RU N - 39 291 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 280 265 178 M R RU N - 39 292 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 298 283 214 F R NR N - 39 293 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 262 249 158 F R NR N - 39 294 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 290 273 172 F R SPENT N - 39 295 ML,JB 12/7/2002 16:00 12/8/2002 8:30 7.2 BNT 239 225 125 F R NR N - 40 296 ML,JB 12/8/2002 8:30 12/8/2002 16:06 8.6 BNT 251 234 - M NR NR N - 41 297 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 RBT 374 356 496 F R RU N - 41 298 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 BNT 375 359 550 F R NR N - 41 299 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 BNT 355 340 411 F R NR N - 41 300 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 BNT 309 294 233 F R NR N - 41 301 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 BNT 331 316 313 F R NR N - 41 302 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 BNT 326 311 321 M R NR N - 41 303 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 BNT 326 318 318 M R RU N - 41 304 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 BNT 297 282 224 M R RU N - 41 305 ML,JB 12/8/2002 16:00 12/9/2002 9:15 6.5 BNT 267 253 154 F R RU N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

42 - ML.JB 12/9/2002 9:15 12/9/2002 16:15 8.3 NO FISH CAUGHT - - - - - - 43 306 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 RBT 312 296 270 M R RU N - 43 307 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 496 482 1110 F R RU N - 43 308 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 447 431 838 F R NR N - 43 309 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 443 425 792 F R NR N - 43 310 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 465 448 928 F R NR N - 43 311 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 354 340 386 F R NR N - 43 312 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 332 314 323 M R RU N - 43 313 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 260 245 137 M R RU N - 43 314 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 307 298 246 F R NR N - 43 315 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 298 285 230 F R RU N - 43 316 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 222 208 104 M R RU N - 43 317 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 263 249 153 M R RU N - 43 318 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 256 244 145 M R RU N - 43 319 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 285 268 184 F R NR Y 42443 320 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 263 250 154 M R RU N - 43 321 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 262 248 152 M R RU N - 43 322 ML,JB 12/9/2002 16:15 12/10/2002 9:15 6.7 BNT 228 216 100 M R RU Y - 44 323 ML,JB 12/10/2002 9:15 12/10/2002 16:15 8.3 BNT 290 275 206 F R RU Y 43044 324 ML,JB 12/10/2002 9:15 12/10/2002 16:15 8.3 BNT 252 243 143 F R RU N - 44 325 ML,JB 12/10/2002 9:15 12/10/2002 16:15 8.3 BNT 234 217 108 M R RU N - 44 326 ML,JB 12/10/2002 9:15 12/10/2002 16:15 8.3 BNT 240 227 129 F R RU N - 44 327 ML,JB 12/10/2002 9:15 12/10/2002 16:15 8.3 BNT 271 255 150 M R RU N - 44 328 ML,JB 12/10/2002 9:15 12/10/2002 16:15 8.3 BNT 265 250 150 F R RU N - 45 329 ML,JB 12/10/2002 16:07 12/11/2002 9:15 6.7 RBT 358 337 407 U - - N - 45 330 ML,JB 12/10/2002 16:07 12/11/2002 9:15 6.7 BNT 482 468 1124 M R RU N - 45 331 ML,JB 12/10/2002 16:07 12/11/2002 9:15 6.7 BNT 389 373 558 M R RU N - 45 332 ML,JB 12/10/2002 16:07 12/11/2002 9:15 6.7 BNT 254 239 124 M R RU N - 45 333 ML,JB 12/10/2002 16:07 12/11/2002 9:15 6.7 BNT 255 244 144 F R NR N - 45 334 ML,JB 12/10/2002 16:07 12/11/2002 9:15 6.7 BNT 250 237 131 F R RU N - 46 - ML,JB 12/11/2002 9:15 12/11/2002 16:50 8.2 NO FISH CAUGHT - - - - - - 47 335 ML,JB 12/11/2002 15:30 12/12/2002 9:15 6.5 RBT 357 333 349 M R RU N - 47 336 ML,JB 12/11/2002 15:30 12/12/2002 9:15 6.5 RBT 355 336 405 M R RU N - 47 337 ML,JB 12/11/2002 15:30 12/12/2002 9:15 6.5 RBT 321 309 305 M R RU N - 47 338 ML,JB 12/11/2002 15:30 12/12/2002 9:15 6.5 BNT 334 319 339 F R RU N - 47 339 ML,JB 12/11/2002 15:30 12/12/2002 9:15 6.5 BNT 242 228 124 F R RU N - 48 - ML,JB 12/12/2002 9:15 12/12/2002 16:10 7.7 NO FISH CAUGHT - - - - - - 49 340 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 RBT 422 408 682 F R RU N - 49 341 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 RBT 348 329 403 U NR NR N - 49 342 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 RBT 338 317 336 U NR NR N - 49 343 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 RBT 349 328 345 U NR NR N - 49 344 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 BNT 553 540 1675 M R RU N - 49 345 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 BNT 279 265 183 F R NR N - 49 346 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 BNT 317 299 254 F R NR N -49 347 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 BNT 369 355 460 F R NR N - 49 348 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 BNT 270 257 176 M R RU N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

49 349 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 BNT 260 246 147 F R RU N - 49 350 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 BNT 255 240 147 M R RU N - 49 351 ML,JB 12/12/2002 16:10 12/13/2002 8:30 6.7 BNT 269 253 157 M R RU N - 50 352 MT,DS 12/13/2002 8:30 12/13/2002 15:50 - BNT 274 258 179 F R NR N - 50 353 MT,DS 12/13/2002 8:30 12/13/2002 15:50 - BNT 251 240 138 M R RU N - 51 354 MT,DS 12/13/2002 15:50 12/14/2002 10:45 7.1 RBT 435 412 744 M R RU N - 51 355 MT,DS 12/13/2002 15:50 12/14/2002 10:45 7.1 RBT 295 271 230 M R RU N - 51 356 MT,DS 12/13/2002 15:50 12/14/2002 10:45 7.1 BNT 317 304 244 F R NR N - 51 357 MT,DS 12/13/2002 15:50 12/14/2002 10:45 7.1 BNT 256 242 107 F R NR N - 51 358 MT,DS 12/13/2002 15:50 12/14/2002 10:45 7.1 BNT 284 268 164 F R RU N - 51 359 MT,DS 12/13/2002 15:50 12/14/2002 10:45 7.1 BNT 253 239 105 F R RU N - 52 - MT,DS 12/14/2002 10:45 12/14/2002 17:00 9.3 NO FISH CAUGHT - - - - N - 53 360 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 RBT 307 290 - M R RU N - 53 361 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 RBT 448 430 880 M R RU N - 53 362 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 RBT 347 329 371 M R RU N - 53 363 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 RBT 385 368 493 U NR NR N - 53 364 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 RBT 341 320 - U NR NR N - 53 365 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 588 570 2100 F R NR N - 53 366 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 522 507 1412 M R RU N - 53 367 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 570 558 1732 F R RU N - 53 368 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 511 505 - F R RU N - 53 369 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 425 412 761 M R RU N - 53 370 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 352 330 385 F R NR N - 53 371 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 330 318 358 M R RU N - 53 372 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 260 248 155 F R NR N - 53 373 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 260 248 144 F R NR N - 53 374 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 259 245 51 F R NR N - 53 375 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 265 255 158 F R NR N - 53 376 MT,DS 12/14/2002 17:00 12/15/2002 8:45 7.5 BNT 247 230 137 F R NR N - 54 377 MT,DS 12/15/2002 8:45 12/15/2002 17:09 9.3 RBT 332 315 370 F R RU N - 55 378 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 RBT 277 260 - M R RU N - 55 379 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 535 520 1458 M R RU N - 55 380 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 428 412 764 M R RU N - 55 381 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 411 396 680 M R RU N - 55 382 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 421 408 735 M R RU N - 55 383 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 499 482 989 F NR SPENT N - 55 384 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 436 424 757 F R NR N - 55 385 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 493 479 1129 F R RU N - 55 386 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 283 270 186 M NR NR N - 55 387 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 274 259 167 F R NR N - 55 388 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 252 238 131 M R RU N - 55 389 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 297 285 199 F R RU N - 55 390 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 261 250 146 F R RU N - 55 391 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 262 247 142 F R RU N - 55 392 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 266 252 168 F R NR N - 55 393 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 268 256 177 F R NR N - 55 394 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 301 286 256 F R NR N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

55 395 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 265 250 154 F NR SPENT N - 55 396 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 302 285 219 M R NR N - 55 397 MT,DS 12/15/2002 17:10 12/16/2002 8:35 7.5 BNT 289 273 198 M R NR N - 56 398 MT,DS 12/16/2002 8:35 12/16/2002 16:10 - BNT 256 240 135 F R RU N - 57 399 MT,DS,SR 12/16/2002 16:10 12/17/2002 7:30 7.9 BNT 447 434 617 F NR NR N - 57 400 MT,DS,SR 12/16/2002 16:10 12/17/2002 7:30 7.9 BNT 297 281 210 M R RU N - 57 401 MT,DS,SR 12/16/2002 16:10 12/17/2002 7:30 7.9 BNT 247 234 134 F R RU N - 57 402 MT,DS,SR 12/16/2002 16:10 12/17/2002 7:30 7.9 BNT 275 257 162 M R RU N - 57 403 MT,DS,SR 12/16/2002 16:10 12/17/2002 7:30 7.9 BNT 262 251 166 F R RU N - 57 404 MT,DS,SR 12/16/2002 16:10 12/17/2002 7:30 7.9 BNT 267 253 151 F R NR N - 58 405 SR,JB 12/17/2002 7:30 12/17/2002 16:30 8.5 BNT 273 257 163 M R RU N - 58 406 SR,JB 12/17/2002 7:30 12/17/2002 16:30 8.5 BNT 247 233 133 M R RU N - 59 407 SR,JB 12/17/2002 16:30 12/18/2002 8:40 7 BNT 260 248 146 F R RU N - 59 408 SR,JB 12/17/2002 16:30 12/18/2002 8:40 7 BNT 260 245 150 M R RU N - 60 - SR,JB 12/18/2002 8:40 12/18/2002 16:30 - NO FISH CAUGHT - - - - - - 61 409 SR,JB 12/18/2002 16:30 12/19/2002 8:50 5.1 BNT 278 265 185 M R RU N - 62 - SR 12/19/2002 8:50 12/19/2002 16:25 6.3 NO FISH CAUGHT - - - - - - 63 410 SR 12/19/2002 16:25 12/20/2002 8:40 4.9 BNT 265 250 147 M R RU N - 63 411 SR 12/19/2002 16:25 12/20/2002 8:40 4.9 BNT 360 345 412 F NR NR N - 64 - SR 12/20/2002 8:40 12/20/2002 16:30 6.3 NO FISH CAUGHT - - - - - - 65 412 SR 12/20/2002 16:30 12/20/2002 9:00 5.9 BNT 579 563 2033 M R RU N - 65 413 SR 12/20/2002 16:30 12/21/2002 9:00 5.9 RBT 400 380 573 - - - - - 66 - SR 12/21/2002 9:00 12/21/2002 16:30 6.1 NO FISH CAUGHT - - - - - - 67 414 SR 12/21/2002 16:30 12/22/2002 9:30 4.5 RBT 303 281 240 - - - - - 67 415 SR 12/21/2002 16:30 12/22/2002 9:30 4.5 RBT 313 298 319 - - - - - 67 416 SR 12/21/2002 16:30 12/22/2002 9:30 4.5 BNT 424 414 669 M R RU N - 68 - SR 12/22/2002 9:30 12/22/2002 16:30 6.3 NO FISH CAUGHT - - - - - - 69 417 SR 12/22/2002 16:30 12/23/2002 8:45 5.7 BNT 280 265 179 M R RU N - 69 418 SR 12/22/2002 16:30 12/23/2002 8:45 5.7 BNT 262 248 144 M R RU N - 69 419 SR 12/22/2002 16:30 12/23/2002 8:45 5.7 BNT 246 243 136 M NR NR N - 69 420 SR 12/22/2002 16:30 12/23/2002 8:45 5.7 BNT 248 236 150 F R NR N - 69 421 SR 12/22/2002 16:30 12/23/2002 8:45 5.7 RBT 354 336 363 - - - - - 70 - SR,BL 12/23/2002 8:45 12/23/2002 16:45 6.8 NO FISH CAUGHT - - - - - - 71 422 SR,BL 12/23/2002 16:46 12/24/2002 8:40 5.4 RBT 364 339 391 F R NR - - 71 423 SR,BL 12/23/2002 16:46 12/24/2002 8:40 5.4 BNT 427 411 729 M R RU N - 71 424 SR,BL 12/23/2002 16:46 12/24/2002 8:40 5.4 BNT 418 407 758 M R RU N - 71 425 SR,BL 12/23/2002 16:46 12/24/2002 8:40 5.4 BNT 377 366 519 F R NR N - 71 426 SR,BL 12/23/2002 16:46 12/24/2002 8:40 5.4 BNT 309 296 257 F R RU N - 71 427 SR,BL 12/23/2002 16:46 12/24/2002 8:40 5.4 BNT 610 594 2271 M R RU N - 72 428 SR,BL 12/24/2002 8:40 12/24/2002 16:00 6.5 RBT 335 318 317 F R RU N - 73 429 BL 12/24/2002 16:01 12/25/2002 10:00 5 RBT 324 300 299 M R RU N - 73 430 BL 12/24/2002 16:01 12/25/2002 10:00 5 RBT 355 333 396 F R RU N - 73 431 BL 12/24/2002 16:01 12/25/2002 10:00 5 BNT 263 250 154 F R RU N - 74 - BL 12/25/2002 10:00 12/25/2002 16:17 6 NO FISH CAUGHT - - - - - - 75 432 BL 12/25/2002 16:20 12/26/2002 9:12 3.9 RBT 338 320 345 M R RU N - 75 433 BL 12/25/2002 16:20 12/26/2002 9:12 3.9 RBT 357 332 398 F R RU N - 75 434 BL 12/25/2002 16:20 12/26/2002 9:12 3.9 BNT 373 360 450 M R RU N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

75 435 BL 12/25/2002 16:20 12/26/2002 9:12 3.9 BNT 307 294 223 F NR - N - 75 436 BL 12/25/2002 16:20 12/26/2002 9:12 3.9 BNT 263 248 163 F R RU N - 76 437 BL 12/26/2002 9:17 12/26/2002 16:35 5.2 RBT 355 333 398 F R RU - - 77 438 GV 12/26/2002 16:49 12/27/2002 8:48 2.4 BNT 276 265 192 F R RU N - 78 - GV 12/27/2002 8:50 12/27/2002 16:21 4.2 NO FISH CAUGHT - - - - - - 79 439 GV 12/27/2002 16:30 12/28/2002 9:24 2.7 BNT 390 385 535 F R RU N - 80 - GV 12/28/2002 9:25 12/28/2002 16:27 4.9 NO FISH CAUGHT - - - - - - 81 - GV 12/28/2002 16:30 12/29/2002 9:30 3.7 NO FISH CAUGHT - - - - - - 82 - GV 12/29/2002 9:35 12/29/2002 16:42 6.1 NO FISH CAUGHT - - - - - - 83 440 GV 12/29/2002 16:42 12/30/2002 8:15 4.5 RBT 349 330 357 M R RU - - 83 441 GV 12/29/2002 16:42 12/30/2002 8:15 4.5 BNT 275 260 165 F R RU - - 83 442 GV 12/29/2002 16:42 12/30/2002 8:15 4.5 BNT 405 390 602 - - - - - 84 - ML, JW 12/30/2002 8:15 12/30/2002 15:55 6.1 NO FISH CAUGHT - - - - - - 84 443 ML, JW 12/30/2002 8:15 12/30/2002 15:55 6.1 BHS 254 248 181 - - - N - 85 - ML, JW 12/30/2002 15:55 12/31/2002 9:10 5.8 NO FISH CAUGHT - - - - - - 86 - ML, JW 12/31/2002 9:10 12/31/2002 16:02 7.5 NO FISH CAUGHT - - - - - - 87 444 ML, JW 12/31/2002 16:02 1/1/2003 8:45 5.6 BNT 496 482 1247 F R RU N - 87 445 ML, JW 12/31/2002 16:02 1/1/2003 8:45 5.6 BNT 426 408 722 M R RU N - 87 446 ML, JW 12/31/2002 16:02 1/1/2003 8:45 5.6 BNT 505 489 1245 F R RU N - 87 447 ML, JW 12/31/2002 16:02 1/1/2003 8:45 5.6 BNT 285 274 206 F R RU N - 88 - ML, KB 1/1/2003 8:45 1/1/2003 16:05 - NO FISH CAUGHT - - - - - - 89 448 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 RBT 372 350 432 - - - N - 89 449 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 RBT - - - - N - 89 450 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 RBT 330 306 306 M R RU N - 89 451 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 RBT 328 308 312 M R RU N - 89 452 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 RBT 344 322 351 M R RU N - 89 453 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 RBT 327 309 330 M R RU N - 89 454 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 RBT 360 339 414 M R RU N - 89 455 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 RBT 310 294 242 M R RU N - 89 456 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 BNT 464 448 939 F R RU N - 89 457 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 BNT 478 466 1103 F R RU N - 89 458 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 BNT 469 453 942 F R - N - 89 459 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 BNT 384 372 543 M R RU N - 89 460 ML, KB 1/1/2003 16:05 1/2/2003 9:10 4.5 BNT 348 326 360 M R RU Y 42690 - ML 1/2/2003 9:10 1/2/2003 16:05 6.5 NO FISH CAUGHT - - - - - - 91 461 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 342 322 361 M R RU N - 91 462 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 362 348 488 M R RU N - 91 463 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 348 328 359 M R RU N - 91 464 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 381 363 552 F R RU N - 91 465 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 362 346 375 M R RU N - 91 466 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 316 296 265 M R RU N - 91 467 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 361 341 387 U - - N - 91 468 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 377 359 533 U - - N - 91 469 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 316 292 230 M R RU N - 91 470 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 377 354 409 M R RU N - 91 471 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 392 373 521 M R RU N - 91 472 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 364 343 402 M R RU N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

91 473 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 353 332 395 U - RU N - 91 474 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 363 343 426 F R RU N - 91 475 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 356 338 366 U - RU N - 91 476 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 526 512 1568 F R - N - 91 477 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 434 422 940 M R RU N - 91 478 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 475 461 887 F R RU N - 91 479 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 431 417 659 F R RU N - 91 480 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 400 386 596 M R RU N - 91 481 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 385 370 572 M R RU N - 91 482 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 407 390 559 M R RU N - 91 483 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 386 372 568 M R RU N - 91 484 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 378 362 498 M R RU N - 91 485 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 BNT 300 287 229 F R - N - 91 486 ML 1/2/2003 16:05 1/3/2003 9:15 5.4 RBT 366 346 399 M R RU N - 92 487 ML 1/3/2003 9:15 1/3/2003 16:00 7.2 RBT 375 353 433 U - - N - 92 488 ML 1/3/2003 9:15 1/3/2003 16:00 7.2 BNT 450 433 943 F R RU N - 92 489 ML 1/3/2003 9:15 1/3/2003 16:00 7.2 BNT 352 340 416 M R RU N - 93 490 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 436 414 720 F R RU - - 93 491 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 332 310 294 U - - - - 93 492 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 351 332 373 U - - - - 93 493 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 341 328 342 M R RU - - 93 494 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 316 297 264 U - - - - 93 495 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 323 316 274 U - - - - 93 496 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 305 288 242 M R RU - - 93 497 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 300 282 254 M R RU - - 93 498 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 317 302 278 M R RU - - 93 499 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 RBT 321 304 296 M R RU - - 93 500 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 BNT 404 387 594 M R RU N - 93 501 ML 1/3/2003 16:00 1/4/2003 10:20 5.7 BNT 384 368 452 F R - N - 94 502 ML 1/4/2003 10:20 1/4/2003 15:50 7.3 RBT 318 299 295 U - - - - 95 503 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 339 324 335 M R RU - - 95 504 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 346 325 351 M R RU - - 95 505 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 347 327 361 M R RU - - 95 506 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 392 368 587 M R RU - - 95 507 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 349 327 344 M R RU - - 95 508 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 288 271 211 M R RU - - 95 509 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 405 380 558 U - - - - 95 510 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 380 360 490 M R RU - - 95 511 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 310 292 285 F R RU - - 95 512 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 342 321 326 M R RU - - 95 513 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT 348 326 353 M R RU - - 95 514 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 RBT - U - - - - 95 515 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 BNT 467 452 969 F R RU N - 95 516 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 BNT 389 375 617 F R RU N - 95 517 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 BNT 283 258 183 F R - N - 95 518 ML 1/4/2003 15:50 1/5/2003 9:10 5.7 BNT 306 290 290 M R RU N - 96 519 ML 1/5/2003 9:10 1/5/2003 15:52 7.6 RBT 366 348 - F R RU - - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

97 520 ML 1/5/2003 15:52 1/6/2003 9:20 - RBT 361 342 365 M R RU - - 97 521 ML 1/5/2003 15:52 1/6/2003 9:20 - RBT 297 282 234 M R RU - - 97 522 ML 1/5/2003 15:52 1/6/2003 9:20 - RBT 324 305 336 - - - - - 97 523 ML 1/5/2003 15:52 1/6/2003 9:20 - BNT 575 557 1820 M R RU N - 98 - ML 1/6/2003 9:20 1/6/2003 16:05 8.6 NO FISH CAUGHT - - - - - - 99 524 ML 1/6/2003 16:05 1/7/2003 9:05 7.3 RBT 374 354 504 M R RU - - 99 525 ML 1/6/2003 16:05 1/7/2003 9:05 7.3 RBT 339 320 315 M R RU - - 99 526 ML 1/6/2003 16:05 1/7/2003 9:05 7.3 BNT 465 453 948 M R RU N - 99 527 ML 1/6/2003 16:05 1/7/2003 9:05 7.3 BNT 437 422 839 M R RU N - 99 528 ML 1/6/2003 16:05 1/7/2003 9:05 7.3 BNT 245 231 115 M R RU N - 

100 - SR 1/7/2003 9:05 1/7/2003 16:45 8.7 NO FISH CAUGHT - - - - - - 101 529 SR 1/7/2003 16:45 1/8/2003 9:00 7.3 RBT 428 408 721 M R RU - - 101 530 SR 1/7/2003 16:45 1/8/2003 9:00 7.3 RBT 338 314 341 UNK NR NR - - 101 531 SR 1/7/2003 16:45 1/8/2003 9:00 7.3 RBT 301 285 321 M R RU - - 102 - SR 1/8/2003 9:00 1/8/2003 16:30 8.6 NO FISH CAUGHT - - - - - - 103 532 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 RBT 399 378 537 M R RU - - 103 533 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 RBT 350 330 393 F R RU - - 103 534 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 RBT 345 326 370 M R RU - - 103 535 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 RBT 330 309 329 UNK NR NR - - 103 536 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 RBT 335 298 317 UNK NR NR - - 103 537 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 RBT 370 352 456 UNK NR NR - - 103 538 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 RBT 319 301 300 UNK NR NR - - 103 539 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 RBT 284 266 191 UNK NR NR - - 103 540 SR 1/8/2003 16:30 1/9/2003 9:00 8.2 BNT 532 510 1431 M NR NR N - 104 - SR 1/9/2003 9:00 1/9/2003 16:45 9.5 NO FISH CAUGHT - - - - - - 105 541 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 316 297 286 UNK NR NR - - 105 542 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 383 367 479 M R RU - - 105 543 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 344 324 372 UNK NR NR - - 105 544 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 330 315 300 UNK NR NR - - 105 545 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 341 322 332 UNK NR NR - - 105 546 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 340 325 370 UNK NR NR - - 105 547 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 337 319 318 UNK NR NR - - 105 548 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 301 281 230 UNK NR NR - - 105 549 SR 1/9/2003 16:45 1/10/2003 8:45 8.5 RBT 319 297 316 M R RU - - 106 - SR 1/10/2003 8:45 1/10/2003 16:15 10.3 NO FISH CAUGHT - - - - - - 107 550 SR 1/10/2003 16:15 1/11/2003 8:30 9.1 RBT 352 332 372 M R RU - - 107 551 SR 1/10/2003 16:15 1/11/2003 8:30 9.1 RBT 372 356 417 M R RU - - 107 552 SR 1/10/2003 16:15 1/11/2003 8:30 9.1 RBT 294 275 216 UNK NR NR - - 107 553 SR 1/10/2003 16:15 1/11/2003 8:30 9.1 RBT 298 279 276 M R RU - - 107 554 SR 1/10/2003 16:15 1/11/2003 8:30 9.1 RBT 389 368 342 F R RU - - 107 555 SR 1/10/2003 16:15 1/11/2003 8:30 9.1 RBT 365 346 386 F R RU - - 107 556 SR 1/10/2003 16:15 1/11/2003 8:30 9.1 BNT - - - - - - 108 - SR 1/11/2003 8:30 1/11/2003 16:30 10.0 NO FISH CAUGHT - - - - - - 109 557 SR 1/11/2003 16:30 1/12/2003 10:00 7.3 RBT 319 297 275 M R RU - - 109 558 SR 1/11/2003 16:30 1/12/2003 10:00 7.3 RBT 306 289 260 UNK NR NR - - 109 559 SR 1/11/2003 16:30 1/12/2003 10:00 7.3 BNT 270 257 158 F R RU N - 110 560 SR 1/12/2003 10:00 1/12/2003 17:00 9.1 BNT 620 603 2423 F R RU N - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

110 561 SR 1/12/2003 10:00 1/12/2003 17:00 9.1 BNT 262 248 154 F R NR N - 111 562 SR 1/12/2003 17:00 1/13/2003 8:45 7.1 RBT 390 367 380 M R RU - - 111 563 SR 1/12/2003 17:00 1/13/2003 8:45 7.1 RBT 360 335 364 UNK NR NR - - 111 564 SR 1/12/2003 17:00 1/13/2003 8:45 7.1 RBT 340 321 331 M R RU - - 111 565 SR 1/12/2003 17:00 1/13/2003 8:45 7.1 RBT 338 319 374 M R RU - - 111 566 SR 1/12/2003 17:00 1/13/2003 8:45 7.1 RBT 361 340 409 F R RU - - 111 567 SR 1/12/2003 17:00 1/13/2003 8:45 7.1 RBT 310 291 210 UNK NR NR - - 111 568 SR 1/12/2003 17:00 1/13/2003 8:45 7.1 RBT 303 285 279 UNK NR NR - - 112 - LJ 1/13/2003 8:45 1/13/2003 16:52 9.0 NO FISH CAUGHT - - - - - - 113 569 LJ 1/13/2003 16:52 1/14/2003 9:20 6.9 RBT 349 331 380 UNK NR - - - 113 570 LJ 1/13/2003 16:52 1/14/2003 9:20 6.9 RBT 348 335 382 F R RU - - 113 571 LJ 1/13/2003 16:52 1/14/2003 9:20 6.9 RBT 354 333 370 M R RU - - 113 572 LJ 1/13/2003 16:52 1/14/2003 9:20 6.9 RBT 357 336 373 M R RU - - 114 573 LJ 1/14/2003 9:20 1/14/2003 17:40 8.9 RBT 377 355 400 M R RU - - 114 574 LJ 1/14/2003 9:20 1/14/2003 17:40 8.9 RBT 290 270 212 F R RU - - 115 575 LJ 1/14/2003 17:40 1/15/2003 9:10 6.9 BNT 305 290 255 F R RU Y 532115 576 LJ 1/14/2003 17:40 1/15/2003 9:10 6.9 RBT 399 372 550 F R RU - - 115 577 LJ 1/14/2003 17:40 1/15/2003 9:10 6.9 RBT 312 292 359 M R RU - - 115 578 LJ 1/14/2003 17:40 1/15/2003 9:10 6.9 RBT 357 333 366 F R RU - - 115 579 LJ 1/14/2003 17:40 1/15/2003 9:10 6.9 RBT 364 346 430 UNK - - - - 116 - LJ 1/15/2003 9:10 1/15/2003 17:00 8.6 NO FISH CAUGHT - - - - - - 117 580 LJ 1/15/2003 17:00 1/16/2003 9:29 6.4 RBT 359 338 412 M R RU - - 117 581 LJ 1/15/2003 17:00 1/16/2003 9:29 6.4 RBT 356 334 344 UNK - - - - 118 582 LJ 1/16/2003 9:29 1/16/2003 18:35 8.3 RBT 394 371 526 F R RU - - 118 583 LJ 1/16/2003 9:29 1/16/2003 18:35 8.3 BNT 250 236 124 UNK - - N - 119 584 LJ 1/16/2003 18:35 1/17/2003 10:30 7.0 RBT 370 340 400 UNK - - - - 119 585 LJ 1/16/2003 18:35 1/17/2003 10:30 7.0 RBT 358 338 370 M R RU - - 119 586 LJ 1/16/2003 18:35 1/17/2003 10:30 7.0 RBT 274 257 193 M R RU - - 120 587 LJ 1/17/2003 10:30 1/17/2003 18:15 8.5 RBT 307 288 267 M R RU - - 120 588 LJ 1/17/2003 10:30 1/17/2003 18:15 8.5 RBT 363 342 390 M R RU - - 121 589 LJ 1/17/2003 18:15 1/18/2003 9:00 6.4 RBT 309 288 264 M R RU - - 121 590 LJ 1/17/2003 18:15 1/18/2003 9:00 6.4 RBT 330 308 269 M R RU - - 122 - MM, SR 1/18/2003 9:00 1/18/2003 18:12 8.1 NO FISH CAUGHT - - - - - - 123 591 MM, SR 1/18/2003 18:12 1/19/2003 10:30 6.5 RBT 350 328 368 M R RU - - 123 592 MM, SR 1/18/2003 18:12 1/19/2003 10:30 6.5 RBT 331 307 308 UNK - - - - 124 - MM, SR 1/19/2003 10:30 1/19/2003 17:10 8.0 NO FISH CAUGHT - - - - - - 125 593 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 302 279 226 UNK - - - - 125 594 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 412 388 571 F R RU - - 125 595 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 296 272 210 F R RU - - 125 596 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 345 318 303 M R RU - - 125 597 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 324 301 263 M R RU - - 125 598 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 339 316 330 UNK - - - - 125 599 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 361 336 390 F R RU - - 125 600 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 345 323 343 UNK - - - - 125 601 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 358 337 377 M R RU - - 125 602 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 333 311 353 UNK - - - - 125 603 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 336 312 337 F R RU - - 
APPENDIX C - Bright Angel Creek Weir Feasibility Study Data, Grand Canyon National Park, Coconino C

Sample

#

Fish ID

#

Recorder/

Processor Start date Start time End date End time

H2O

temp C

Species

code1

TL2

(mm)

FL3

(mm)

WT

(gm) Sex

Sexual

Conditon4

Sexual

Char5 Recap6 P

125 604 MM, SR 1/19/2003 17:10 1/20/2003 10:50 6.8 RBT 352 327 360 UNK - - - - 126 605 MM, SR 1/20/2003 10:50 1/20/2003 17:05 8.5 RBT 358 333 - F R RU - - 126 606 MM, SR 1/20/2003 10:50 1/20/2003 17:05 8.5 RBT 306 287 - F R RU - - 127 607 MM, SR 1/20/2003 17:05 1/21/2003 9:00 6.7 RBT 356 336 - F R RU - - 127 608 MM, SR 1/20/2003 17:05 1/21/2003 9:00 6.7 RBT 315 295 - F R RU - - 127 609 MM, SR 1/20/2003 17:05 1/21/2003 9:00 6.7 RBT 335 313 - F R RU - - 127 610 MM, SR 1/20/2003 17:05 1/21/2003 9:00 6.7 RBT 345 327 - F R RU - - 127 611 MM, SR 1/20/2003 17:05 1/21/2003 9:00 6.7 RBT 310 288 - F - NR - - 127 612 MM, SR 1/20/2003 17:05 1/21/2003 9:00 6.7 RBT - - - - - - 

1 - Species code: BNT = brown trout, RBT = rainbow trout, BHS = bluehead sucker

2 - TL = Total length

3 - FL = Fork length

4 - Sexual condition: R = ripe, NR = not ripe

5 - Sexual char: NR = not recorded, RU = running, Spent = spawned

6 - Recap: Y = adipose fin clip, N = no adipose fin clip

7 - Fish Disposal: DN = dead and not kept, RA = released alive

- = No data taken