WSP01639

• File Number: 8240.200.10.A
• Description: UCRBRIP Habitat Restoration
• Basin: Colorado Mainstem
• Date: 10/8/1998
• Author: UCRBRIP
• Title: Final Habitat Restoration Program FY 1999 Work Plan
• Water Supply Pro - Doc Type: Publication

Therefore, a post-construction monitoring study would be prudent to
determine if endangered and other native fishes can move upstream using
the passageway at GVIC, particularly during low. flows. .

IV. Study Goals. Objectives, End Product:

Studv Goal

Evaluate whether sub.adult and adult Colorado squawfish will move
upstream through the passage structure at GVIC; determine the use by
other native and nonnative fishes.

Obiectives

1. Determine if sub. adult and adult Colorado squawfish and other native
and nonnative fishes will move upstream via the passage structure.
Emphasis will be placed on upstream movement of native species
during low flows.

2. Determine the extent of movement of sub.adult and adult Colorado
squawfish in the immediate vicinity of the GVIC Diversion Dam, with
emphasis on movement upstream past the diversion dam.

3. Determine the utility of uSing the type of fish passage structure
constructed at GVIC as a recovery tool for Colorado squawfish and
razorback sucker at other instream barriers in the Upper Colorado
River Basin.

End Products

1. Data on passage-.number of species; numbers per species from
recaptured, tagged fish.

2. Data on temporal and spatial movement and distribution of
radiotagged Colorado squawfish upstream, downstream. and in the
immediate vicinity of the diversion dam.

3. Numbers and species of nonnative fish removed from the river.

V. Study area: Upper Colorado River from the Price Stubb Dam (river mile
188.3) downstream to Loma (river mile 152.6); Lower Gunnison River,.
river mile 3.0-0.7; GVIC canal system,.Palisade to Grand Junction.

GVIC 4