9654

• UCREFRP Catalog Number: 9654
• Author: U.S. Fish and Wildlife Service.
• Title: Results of the Interagency Standardized Monitoring Program, 1990.
• USFW Year: 1991.
• USFW - Doc Type: Grand Junction, CO.
• Copyright Material: NO

327-335
Vernal * 2 1
300-319
245-260 3
]3 /
~~
.a
~~
~~ ~
C~
Yampa River
49-54 10
s
11 7o-so
95-105
95-104
0-21 White River
Grand Junction
Green 6
River * .~e~ 132-54
96-115 4 d ~ ~
ova 86-99
G°` 8
40-56 5 * Moab
49-68
Gunnison River '
Figure 1.--River reaches sampled in the late-juvenile/adult Colorado squawfish
monitoring program.
Results
A total of 108 juvenile or adult Colorado squawfish was collected during
the 1990 monitoring program (Table 2)--an additional 26 individuals were
observed but could not be captured (Table 3). Catch rates (number of Colorado
squawfish collected per hour of electrofishing time) were highest in parts of
the Green and White rivers, and lowest in the Colorado and Yampa rivers (Table
2). Thirteen razorback suckers were captured in the upper Green River. Ten
humpback chub were collected from the Colorado River. Northern pike were
common in the Green and Yampa rivers, but were not collected elsewhere (Table
4). Smallmouth bass were observed in the-Green and Yampa rivers, one
largemouth bass was observed in the Colorado River and green sunfish were seen
in the Green, Colorado, and Yampa rivers (Table 4).~
3