8119

• UCREFRP Catalog Number: 8119
• Author: Valdez, R. A. and B. R. Cowdell.
• Title: Effects of Flow Regulation and Ice Formation on Overwinter Nursery Habitat and Survival of Age-0 Colorado Squawfish in the Green River Below Flaming Gorge Dam - Draft.
• USFW Year: 1996.
• USFW - Doc Type: Logan, Utah.
• Copyright Material: NO

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SITE 12 (RM 292.5)

Site 12 was a large, shallow scour-channellocated above the Bonanza Bridge at (RM 292.5). This
backwater had an area of 3,400 m2 with a maximum depth of 1.8 ft. By February 1, this area had a thin
ice cover (average 0.3 ft) which did not significantly reduce habitat. On February 22, this habitat had
changed to a shallow side channel, with current velocities of 1.0 ft/sec. This area was considered
unsuitable winter habitat.

B

~

500 feet

c

. . . . . .

300 foot baseline

A

Bathymetric map of Site 12 (RM 292.5), showing waters edge and 1 ft contour lines.

Photographs of Site 12 (RM 292.5) taken September 1993 (top) and February 1994 (bottom).