8188

• UCREFRP Catalog Number: 8188
• Author: Muth, R. T., et al.
• Title: Flow and Temperature Recommendations for Endangered Fishes in the Green River Downstream of Flaming Forge Dam.
• USFW Year: 2000.
• USFW - Doc Type: \
• Copyright Material: NO

Final Report

September 2000

LIST OF TABLES

1.1 Studies conducted in support of the 1992 Biological Opinion on Operation
of Flaming Gorge Dam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 1-10

2.1 Studies included in the Flaming Gorge Flow Recommendations Investigation . . . . . . . . 2-5

3.1 Reservoirs of the Green River basin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.2 Estimated depletions in the Green River system in 1998 . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.3 USGS stream flow gages in the Green River system and their periods of record ..... 3-11

3.4 Percent change in mean monthly flow of the Green River due to regulation. . . . . . . . . 3-16

3.5 Probabilities of exceedance for regulated and unregulated flows of the Green
River at the USGS stream gages near Jensen and Green River, Utah, 1963-1996 .... 3-18

3.6 Percent reduction in annual peak flows of the Green River due to regulation
at various exceedance values ............................................. 3-18

3.7 The effect of regulation on mean date of peak flow at USGS stream gages

on the Green River ..................................................... 3-20

3.8 Mean base flows and base-flow variability as measured by coefficient
of variation at the USGS stream gage near Jensen, Utah, 1946-1996 .............. 3-22

3.9 Peak flow estimates for major tributaries of the Green River basin downstream
of Flaming Gorge Dam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-26

3.10 Modeled within-day flow and stage changes for the Green River at USGS
stream gages near Greendale and Jensen, Utah, under 1992 Biological Opinion
operations at Flaming Gorge Dam ......................................... 3-29

3.11 Measured within-day flow and stage changes for the Green River at USGS
stream gages near Jensen, Ouray, and Green River, Utah, under different
Flaming Gorge Dam operations ........................................... 3-30

3.12 Location of temperature monitoring stations on the Green and Yampa Rivers. . . . . . . 3-31

3.13 In-channel response of sandbars to various flood levels in the Green River ......... 3-43

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