9363

• UCREFRP Catalog Number: 9363
• Author: Muth, R. T., L. W. Crist, K. E. LaGory, J. W. Hayse, K. R. Bestgen, J. K. Lyons, T. P. Ryan and R. A. Valdez.
• Title: Flow Recommendations for Endangered Fishes in the Green River Downstream of Flaming Gorge Dam.
• USFW Year: 1999.
• USFW - Doc Type: Lakewood.
• Copyright Material: NO

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Draft - Do Not Cite

May /999

Page

3.5 GREEN RIVER WATER TEMPERATURES........................... 3-33
3.5.1 Summer Water Temperatures ................................ 3-37
3.5.1.1 Water Temperature in Reach 1 ........................ 3-37
3.5.1.2 Water Temperature in Reach 2 ........................3-38
3.5,1.3 Water Temperature in Reach 3 ..........,.............3-39
3.5.2 Ice Conditions ...............................,.......'..,. 3-40
3.6 GEOMORPHIC PROCESSES IN THE GREEN RIVER .................. 3-44
3.6.1 Channel Planforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-44
3.6.1.1 Restricted and Fixed Meanders. . . . . . . . . . . . . . . . . . . . . . . . 3-44 .
3.6.1.2 Canyon Reaches with Abundant Debris Fans. . . . . . . . . . . . . 3-47
3.6.2 Sediment Dynamics, Shoreline Complexity, and
Low-Velocity Habitats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-48 ;
3.6.3 Sediment Dynamics and Spawning Substrates ................... 3-51
3.6.4 Vertical Accretion of Banks and Channel Narrowing. . . . . . . . . . . , . . 3-53
3.6.5 Floodplain Inundation ...................................... 3-56
3.7 SUMMARY OF RELATIONSHIPS BETWEEN FLOW, IN-CHANNEL
HABITATS, AND FLOODPLAIN INUNDATION. . . . . . . . . . . . . . . . . . . . 3-59

4 FISHES OF THE GREEN RIVER ............................................ 4-1

4.1 OVERVIEW..,................................................... 4-2

4.1.1 Native Fishes ...........,.................................. 4-2
4,1.2 Nonnative Fishes ........................................... 4-7
4.2 COLORADO PIKEMINNOW .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-12
4.2.1 Distribution and Status Overview .............................4-12
4.2.2 Life History Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-13
4,2,3 Research on Colorado Pikeminnow for the 1992 Flaming
Gorge Biological Opinion .................................. 4-14
4.2.4 Research on Colorado Pikeminnow for the 1990-1996 Flaming
Gorge Flow Recommendations Investigation ....... . . . . . . . . . . . . 4-15
4.2.5 Ecology of Colorado Pikeminnow in the Green River System. . . . . . . 4-15
4.2.5.1 Distribution and Abundance ..........................4-15
4.2.5.2 Life History by Season .............................. 4-23
4.2.5.3 Population Dynamics ............................... 4-38
4.2.5.4 Limiting Factors for Colorado Pikeminnow in
Historical Green River Habitat . . . . . . . . . . . . . . . . . . . . . . . 4-45
4.2.6 Summary of Seasonal Flow-Habitat Relationships for .
Colorado Pikeminnow in the Green River System ............... 4-52
4.2.6.1 Spring ........................................... 4-52
4.2.6.2 Summer and Autumn ............................... 4-54

4.2.6.3 Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-55

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