7202

• UCREFRP Catalog Number: 7202
• Author: Osmundson, D. B. and L. R. Kaeding.
• Title: Studies of Colorado Squawfish and Razorback Sucker Use of the '15-Mile Reach' of the Upper Colorado River as Part of Conservation Measures for the Green Mountain and Ruedi Reservoir Water Sales
• USFW Year: 1989.
• USFW - Doc Type: Final Report.
• Copyright Material: NO

1
TABLE OF CONTENTS (Continued)
Habitat Use ...................................................... 48
. Ad
l
C
l 48
u
t
o
orado Squawfish ....................................
Habitat Type ...........................................
Depth .................................................. 48
52 '
Velocity ............................................... 52
Substrate .............................................. 54
'
Adult Razorback Sucker ...................................... 56
General ................................................ 56
Habitat Type ........................................... 57 '
Depth .................................................. 58
Velocity ............................................... 58
Substrate .............................................. 58 '
SUMMARY ............................................................... 61
RELATIVE IMPORTANCE OF THE 15-MILE REACH .............................. 62
POSSIBLE LIMITING FACTORS ............................................. 62
Adult Colorado S
fi
h 62
quaw
s
.........................................
Habitat ..................................................... 62
Spring ................................................. 62
Summer ................................................. 63
Fall-Winter ............................................ 64
Temperature ................................................. 64
Contaminants 66 '
................................................
Water Clarity ............................................... 66
Food Availability ........................................... 68
Availability of Gravel-Pit Ponds ............................ 69
Introduced Fishes ........................................... 70
Angling ..................................................... 70 '
Razorback Sucker ................................................. 70
RIVER MANAGEMENT OBJECTIVES ........................................... 72
LITERATURE CITED ...................................................... 73 '
APPENDIX .............................................................. 75

iv