7278

• UCREFRP Catalog Number: 7278
• Author: U.S. Fish and Wildlife Service.
• Title: Upper Colorado River Basin Catalog of Fish Studies.
• USFW Year: 1984.
• USFW - Doc Type: Denver, Colorado.
• Copyright Material: NO

A. Study ID Code:
6. Title: Brack Rocks Physical Habitat Simulation (PHABSIM) Study Site,
Colorado River
C. Purpose: To collect physical habitat data for applying the Instream Flow
Incremental P~ethod as part of the Colorado River Fishery Project.
. D. Sample Design/Methods: IFG-4 data collections made on July 13, 1980,
July 22, .1980, and October 23, 1980 at river mile 136. Calabration flows
measured for these dates included 3,800 cfs,-4,600 cfs, and 6,850 cfs.
E, River(s)/Year: Colorado River, 1980
F. Data Computerized: YES X NO
If YES: Name of Computer/Location: CYBER, USER, Denver, CO
Related Software: NA
G. Principal Investigator(s) Charles G. Prewitt
H. Current Contact: Jeffrey H. Johnson
I. Organization/Office/Location: USFWS, Habitat Resources, Denver, CO
J. Publication Citation(s): Prewitt et al., (1981)
K. Comments:. Headpins are overtopped between 12,QOQ-13,000 cfs
i
5