WSP11999

• File Number: 8220.102.01.I
• Description: Aspinall ‎(AKA Curecanti)‎
• State: CO
• Basin: Gunnison
• Water Division: 4
• Date: 1/1/1992
• Title: Scopes of Work - Endangered Fish Program as Related to Aspinall
• Water Supply Pro - Doc Type: Report/Study

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NO: -a.-b
(for MC use)

RECOVERY IMPLEMENTATION PROGRAM
fOR THE ENDANGERED fISH SPECIES
IN THE UPPER COLORADO RIVER BASIN

fY-I992
SCOPE-Of-WORK
RESEARCH PROPOSAL

Phone:

U.S. Fish & Wildlife Service
Colorado River Fishery Project
Frank K. Pfeifer, Project Leader
Charles W. McAda, Fishery Biologist
529 25 1/2 Road, Suite B-110
Grand Junction, Colorado 81505
303-245-9319

Cateoorv (check one)~
Ongoing project
X Requested new start
Unsolicited project
Outside funding

Lead Agency:
Submitted by:
Address:

Michael J. Pucherelli
Bureau of Reclamation
P.O. Box 25007
Denyer, Colorado 80225
[phone]

David E. Salas
Computer Data Systems
P.O. Box 25007
Denver, Colorado 80225
[phone]

Inc.

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Date:

13 May 1991

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I. Title of Proposal: ASPINALL STUDY--Quantification of available habitat in
the Colorado River in relation to test flows released from the Aspinall
Unit.

II. Relationship to Recovery Progra~/Ranking Factors:

Determination of habitat and flow needs for rare fishes of the Colorado
Riyer basin is key to the success of the Recovery Implementation Program.
Further, quantification of habitat versus flow relationships in the
Colorado River will be critical to the biological opinion to be prepared
on operation of the Aspinall Unit. Colorado squawfish are found
throughout the Colorado River between Palisade, Colorado and the
confluence with the Green River. Humpback chub are found in two locations
in the river--Black Rocks and Westwater Canyon. Razorback sucker are
found in very low numbers in the upper portion of the Colorado River.
Proposals exist to augment the razorback sucker population in that area
with hatchery-produced fish. Part of the Biological Opinion on the
operation of the Aspinall Unit will be to provide flow recommendations for