7877

• UCREFRP Catalog Number: 7877
• Author: Anderson, R. M.
• Title: An Evaluation of Fish Community Structure and Habitat Potential for Colorado Squawfish and Razorback Sucker in the Unoccupied Reach ‎(Palisade to Rifle)‎ of the Colorado River, 1993-1995.
• USFW Year: 1997.
• USFW - Doc Type: FA Proj. SE-3,
• Copyright Material: NO

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LIST OF TABLES

Period of record and flow parameters for Glenwood, Debeque and Cameo gages on the
Colorado River. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Gaged flow and estimated natural flow at Cameo for the water year 1992.. ..... 11
Density or percentage of habitat types for three river segments: Rifle to
Parachute (27 kilometers), Parachute to Debeque Canyon (31 kilometers), and
Debeque Canyon to Highline Dam (16 kilometers). ........ . . . . . . . . . . . . . . . 16
Pool area during the base flow period for three river segments: Rifle to Parachute
(27 kilometers), Parachute to Debeque Canyon (31 kilometers), and Debeque
Canyon to HighlineDam (16 kilometers). ..............................18
Mean lengths in mm, (coefficient of variation & standard errors) for total catch
of fish collected in 1994 and 1995. ................................... 21
Mean fish length (>120 mm) for Parachute and Debeque, 1994 and 1995. ......22
Percent offish larger and smaller than 300 mm for Parachute and Debeque in both
1994 and 1995. .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Species estimates (95% c.I.) for fish collected in Parachute and Debeque in 1994

and 1995. ...................................................... 24

Percent width of95% C.I to estimate. (n)=number offish over 150 mm. ...... 25
Percent offish recaptured outside the subsection of release. . . . . . . . . . . . . . . . . . 26
Number offish per kilometer at Parachute, 9.0 km (5.6 mile) and Debeque, 5.8
km (3.6 mile) in 1994, and 9.3 km (5.8 mile) in 1995. ..................... 27
Biomass estimates for Parachute and Debeque in Kg/Ha (percent) for 1994 &

1995. . . .'. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. .30

Biomass (Kg/Ha) for fish smaller and larger than 300 mm. . . . . . . . . . . . . . . . . . . 30
Species composition (%) for fish (over 150 rom) used in the population estimates
at Parachute and Debeque Canyon, Colorado River. ...................... 31
Species composition (%) of all fish collected during electrofishing in 1994 and
1995 in the Colorado River. ........................................ 32
Species composition for spring backwaters sampled in June 1994. . . . . . . . . . . . . 36
Species composition for summer backwaters sampled in July and August 1993. . . 37

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