8024

• UCREFRP Catalog Number: 8024
• Author: Prewitt, C. G., et al.
• Title: Colorado Squawfish and Humpback Chub Populations and Habitat Monitoring Program.
• USFW Year: 1978.
• USFW - Doc Type: Performance Report SE - 3 - 1,
• Copyright Material: NO

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for Colorado River larval fishes, a project sponsored by the Bureau of

Land Management. Likewise, the methodology necessary to quantify in-

stream conditions for endangered fishes is in the developmental stages.

Some of the data collected was used by the Cooperative Instream Flow

Service Group to fine tune their ~ncremental habitat analysis technique.

STUDY AREA

The, '. Colorado squawfish and humpback chub are endemic. to the Colorado
:(

River drainage. Three criteria were used to select the trend zones:

1) Colorado squawfish or humpback chubs must have occurred in the area

within the last 10 years; 2) the area must be acces~ib1e to a field

inventory crew; and, 3) the area must be representative of other por-

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tions of the river. Five trend zones are indicated on the contour maps

in this report (Figs. 1-6) and are located as follows:

Yampa River: (T7N, R95W, Sec. 20 to T7N, R96W, Sec. 20 of the 6th P.M.)

This area was 16 km

long and located in Moffat County between Maybell

and Sunbeam, Colorado (Figs. 1 and 2);

White River: (TIN, R96W, Sec. 6 to T2N, R98W, Sec. 18 of the 6th P.M.)

This area was also 16 km

long and was located in Rio Blanco County

between Rio Blanco Lake and the County Road 65 bridge (Figs. 1 and 3);

Colorado River: (TIS, R2E, Sec. 3 to TlS, RlE, Sec. 23 of the Ute P.M.)

This area was approximately 12km

long and was located in Mesa County

between Palisade and Clifton, Colorado (Fig. 4);

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