7145

• UCREFRP Catalog Number: 7145
• Author: Inslee, T. D.
• Title: Spawning of Razorback Suckers
• USFW Year: 1981.
• Copyright Material: NO

LIST OF TABLES
Table Page
1. Comparison between two channel types in frequency of use
by Colorado squawfish ............ ............................. 8
2. Pearson correlation coefficients (r) of larval (0-20 mm
long) fish abundance (mean number per sample) and yearly
peak flow for three Grand Valley river reaches .................. 17
3. Correlation coefficients (r) of fish densities (no. fish
per 100 m ) in backwaters during fall and yearly peak
flow for two Grand Valley river reaches ......................... 22
4. Summary of recent and historic mean monthly river.
discharge for the Colorado River at the top of the
15-mile reach and at the Colorado/Utah State line, and
for the Gunnison River near Grand Junction (including
Redlands power canal) ........................................... 28
5. Percent flow contribution to the mainstem Colorado River
from its two major tributaries, the Gunnison River and
the upper Colorado River above Grand Junction, April-June,
1966-1989 and 1917-1923 ......................................... 34
6. Comparison of river discharge at the State-line gage with
that at Cameo (plus Plateau Creek) and with that at the
top of the 15-mile reach for the high day of the year ........... 34
7. Peak flows and mean monthly flows in the upper end of the
15-mile reach during years in which peak flows at the
State line gage were about 40,000 cfs ............... 44
8. Peak flows and mean monthly flows in the upper end of the
15-mile reach during years in which peak flows at the
State-line gage were about 30,000 cfs ........................... 44
9. Peak flows and mean monthly flows in the upper end of the
15-mile reach during years in which peak flows at the
State-line gage were about 22,000 cfs ........................... 45
10. Recommendations for spring flows (in cfs) in the 15-mile
reach ........................................................... 46
11. Summary of recent and historic discharge for the Colorado
River at the top of the 15-mile reach during the months
of November-March ............................................... 49
12. Summary of recent and historic river discharge for the
Colorado River at the top of the 15-mile reach during the
months of July-October .......................................... 52
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