9705

• UCREFRP Catalog Number: 9705
• Author: Green River Study Plan ad hoc Committee.
• Title: Study plan for the implementation and evaluation of flow and temperature recommendations for endangered fishes in the Green River downstream of Flaming Gorge Dam.
• USFW Year: 2007.
• USFW - Doc Type: Upper Colorado River Endangered Fish Recovery Program
• Copyright Material: NO

GREEN RIVER STUDY PLAN

Table 3. Timeline for recommended studies.

Recommended Subject Areas

Flood lains
1. Evaluate annual survival of young and
movement of subadult razorback suckers from
floodplains into the mainstem in response to flow
recommendations.
2. Complete evaluation of recent peak flow
studies related to floodplain inundation and
entrainment of larval razorback suckers, and
determine the need for additional studies.

3. Continue annual monitoring of razorback
sucker larvae in the mainstem, and synthesize
existing information on drift and its relationship to
flows and other environmental conditions.

Backwaters
4. Determine the relationship of backwater habitat
development to sediment availability and peak
flows in Reach 2.
5. Evaluate the effect of base flow variability on
backwater habitat maintenance and quality.

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February 2, 2007

07

Out
Years

Nonnatives
6. Determine the influence of flow and
temperature recommendations on nonnative fish
life history components in lower Reach 1 and
u er Reach 2.
7. Determine spillway entrainment rates of
nonnative fish at Flamin Gor e Dam.
Study types: N = new start, 0 = ongoing study.
2 New field study.
3 Final report for ongoing Project Cap 6 rventr.
4 Project 85f, sediment monitoring.
5 Synthesis of existing physical and biological information.
6 Project 22F, annual larval monitoring.
7 Analysis of historical monitoring data.
8 Integration of backwater topography, sediment, and other physical data.
9 Project 138, age-O Colorado pikeminnow monitoring; final report of results to date due in August 2008.
10 Project 144, response of native fish to nonnative predator removal. .
II Integration of data collected under Projects 138, 144, and backwater topography study.
12 Project 115, response offish community in lower Reach 1 and upper Reach 2.
13 Project CI8/19, isotope study.