9477

• UCREFRP Catalog Number: 9477
• Author: McAda, C. W.
• Title: Flow Recommendations to Benefit Endangere Fishes in the Colorado and Gunnison Rivers.
• USFW Year: 2003.
• USFW - Doc Type: Project number 54,
• Copyright Material: NO

LIST OF TABLES
Table Page
1.1 Studies included in the Aspinall Unit Investigations .................... 1-8
2.1 Percentage of the time, by month, that mean-daily river flows met or
exceeded 300 cfs downstream from Redlands Diversion Dam during
two water-development periods. .......... . .. . ......... 2-13
2.2 Summary of unregulated inflow to the Aspinall Unit and release
patterns from Crystal Reservoir during the study period ................ 2-16
2.3 Mean-daily flow of the Gunnison River on the highest day of the year
at four gaging stations - Crystal Reservoir, Gunnison River below
Gunnison Tunnel, Gunnison River near Delta, and Gunnison River
near Grand Junction ..................... ................. 2-19
2.4 Average slope, bankfull width, depth, and median surface grain size
of the Colorado River in specific subreaches. .. .... ......... 2-24
2.5 Water-development related change in frequency and duration of
Gunnison and Colorado River flows related to median sediment-
transport levels identified by Pitlick et al. (1999). ... .. ...... 2-36
2.6 Cumulative area of inundated floodplain habitat with increasing river.
discharge at Escalante SWA, and change in frequency and duration of
inundation over three water-development periods. .................... 2-48
2.7 Average. summer water temperature of the Gunnison River near Delta
and near the mouth at Grand Junction ............................... 2-50
3.1 Native fishes of the. Gunnison and upper Colorado rivers ................. 3-3
3.2 Nonnative fishes of the Gunnison and upper Colorado rivers that
overlap in distribution with the four endangered fishes . ................. 3-5
3.3 Pearson correlation coefficients between mean number of larvae
collected per sample and average high flow in spring, Colorado River,
. 1983-1985 and1988-1994........................................ 3-9
Final Report iv July 2003