Dworshak Reservoir Investigations: Trout, Bass and Forage Species, 1988 Annual Report.
For the period March 1988 through February 1989, an estimated 154,558 angler-hours were expended to catch 20,037 rainbow trout, 3,933 smallmouth bass, and 14 bull trout. Estimated catch of other species, including cutthroat trout, whitefish, suckers, and squawfish totalled 84. Subcatchable rainbow trout (135 to 185mm) caught and released by boat anglers comprised 53% (12,770) of the total catch. An estimated 88.6% of the smallmouth bass caught were under the minimum legal size limit of 305mm and were released. Estimated harvest of smallmouth bass was 450. The highest monthly catch rate documented for all species excluding kokanee was 1.81 fish per hour during October. Severe weather conditions during February reduced effort and no fish were documented in the creel. Cumulative catch rates through the survey period for rainbow trout and smallmouth bass were .13 and .02, respectively. The lowest monthly catch rates generally occurred when fishing pressure was the highest, with fishing effort targeting on kokanee during the May through July high use periods. The Arlee strain rainbow trout was somewhat more vulnerable to boat anglers than the Shasta strain during the early post-release period. 20 refs., 16 figs., 12 tabs.
- Research Organization:
- Nez Perce Dept. of Fisheries Resource Management, Orofino, ID (USA). Orofino Project Office
- Sponsoring Organization:
- United States. Bonneville Power Administration.
- DOE Contract Number:
- AI79-87BP35165
- OSTI ID:
- 5233029
- Report Number(s):
- DOE/BP-35165-2; ON: DE90004342
- Country of Publication:
- United States
- Language:
- English
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54 ENVIRONMENTAL SCIENCES
540350 -- Environment
Aquatic-- Site Resource & Use Studies-- (1990-)
ANIMALS
AQUATIC ORGANISMS
BONNEVILLE POWER ADMINISTRATION
CONSTRUCTION
DAMS
DOCUMENT TYPES
ENVIRONMENTAL IMPACTS
FISHERIES
FISHES
FOOD
Fishes - Effect of dams on - Idaho
INDIAN ORGANIZATIONS
NATIONAL ORGANIZATIONS
OPERATION
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PROGRESS REPORT
Rainbow trout - Idaho - Dworshak Reservoir
SURFACE WATERS
Smallmouth bass - Idaho - Dworshak Reservoir
TROUT
US DOE
US ORGANIZATIONS
VERTEBRATES
WATER RESERVOIRS