6025

• UCREFRP Catalog Number: 6025
• Author: Kaeding, L. R. and D. B. Osmundson.
• Title: Report on the Studies of the Endangered Fishes of the Upper Colorado River As Part of Conservation Measures for the Green Mountain and Ruedi Reservoir Water Sales
• USFW Year: 1988.
• USFW - Doc Type: Second Annual Progress Report.
• Copyright Material: NO

LIST OF FIGURES
Figure Page
1. Map of the general study area ...................................... 3
2. Movement of five Colorado squawfish and one razorback
sucker radio tagged in 1986 and six Colorado squawfish and
two razorbacks suckers radio tagged in 1987 ........................ 8
3. Capture sites for adult, larval and young-of-year Colorado
squawfish in 1986 and 1987 ......................................... 11
' 4. Main-channel temperatures at Palisade (RM 183.2) and Walker
Wildlife Area'(RM 164.8) on the Colorado River,
2 May - 30 October, 1986 ........................................... 13
' 5. Mean-daily, main-channel temperatures at Walker Wildlife
Area (RM 164.8) during 1986 and 1987 ............................... 16
6. Frequency of habitat use by Colorado squawfish ..................... 23
7. Frequency of water depths at locations of radio-tagged
Colorado squawfish during 1986, 1987 and 1988 ...................... 25
8. Linear regression of water depth-on water clarity (as
measured by Secchi disk visibility) at radio-tagged
Colorado squawfish locations within the 15-mile reach, 1987........ 28
9. Water clarity as measured by Secchi disk visibility at
Colorado RM 174.4-175.2 during 1986 ................................ 28
10. Mean length and weight of Colorado squawfish and razorback
sucker in four study ponds, 1986 and 1987 .......................... 36
11. Mean body condition (K) of Colorado squawfish and razorback
sucker in four study ponds during 1986 and 1987 .................... 37
12. Temperature at mid depth in three study ponds during
1986 and 1987 ...................................................... 39
13. Dissolved oxygen at three depths in three study ponds
during 1986 and 1987 ............................................... 43
14. Water clarity, as measured by Secchi disk visibility,
in three study ponds during 1986 and 1987 .......................... 45
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