7079

• UCREFRP Catalog Number: 7079
• Author: Carlson, C. A., et. al.
• Title: Fishes and Macroinvertebrates of the White and Yampa Rivers, Colorado
• USFW Year: 1979.
• USFW - Doc Type: Final Report on a Baseline Survey Conducted for the Bureau of Land Management.
• Copyright Material: NO

Table 1. Total numbers and percentage composition of fishes collected at each trend zone sampling site (all
habitats combined) in the 4Jhite River between Rio Blanco Lake and County Road 65 Bridge, Colorado,
31 July through 2 August 1977. From Prewitt, Wick and Snyder (1978).
Collection Site: A B C D E F G H
Date (day): 1 1 31/2 1 2 1 1 2
Time: 11-12 AM 1-2 PM 6-7 PM 2-3 PM 11-12 AM 4-5 PM 6-7 PM 1-3 PM
9-10 AM
Water Temperature (C): 18-23 19 21/16-17 19-21 18-22 24-30 24 22
Habitats Sampled:a acf acf abcf ace abc abce acef abcef
Length Group (mm TL):b s20 >20 s20 >20 s20 >20 s20 >20 s20 >2Q_ s20 >20 ~2Q_.~2 ~ZL ?2~
Total Fish Collected: 238 927 34 85 15 302 6 354 35 261 37 248 - 240 19 263
Composition:c
Prosopiusn williamsoni - 1 - - - 1 - - - - - - - - - -
J Cypri nus carpi o - - - 1 - 7 - * - - - 4 - 5 - -
Gila robusta 7 6 21 12 47 20 50 43 - 10 5 30 - 23 16 40
Notropis lutrensis - - - 19 - 1 - 5 - 1 - 29 - 25 - 3
Pimephales promelas 3 2 - 4 - 4 - 8 - * 14 4 - 2 5 1
Rhinichthys osculus 85 69 74 21 53 43 50 22 100 77 78 22 - 27 79 40
Catostomus discobolus 5 16 6 12 - 7 - 5 - 1 - 3 - 1 - 3
Catostomus latipinnis - 6 - 29 - 18 - 17 - 11 3 8 - 15 - 14
Ictalurus punctatus - - - - - - - - - * - - - - - -
Cottus bai rdi - - - 2 - - - - - - - - - - - -
aKey to generalized habitat types: a- backwater, b- pool, c- shoreline, d- chute channel, e-riffle, f- run,
bLarvae and `juveniles less than or equal to 20 mm TL (<_20) were probably spawned within about 5 weeks of
the date of collection. Specimens greater than 20 mm TL (>20) include older larvae and young-of-the-year
juveniles as well as older juveniles and adults.
c* _ <0.5%; - = no specimens collected.