Dworshak Reservoir Investigations: Trout, Bass and Forage Species, 1987 Annual Report.
Dworshak Dam and Reservoir is a Corps of Engineers facility located on the North Fork Clearwater River 3.2 km upstream from the Mainstem Clearwater confluence. Since initial filling in 1971, conversion of 87 km of river habitat to a 6644 hectare impoundment has had a profound influence on resident fisheries. The Nez Perce Tribe and the Idaho Department of Fish and Game (IDFG) entered into separate intergovernmental agreements with the Bonneville Power Administration in a cooperative effort to study these impacts. The kokanee Oncorhynchus nerka assessment is included in the IDFG agreement, and is not addressed in this report. This project pertains primarily to rainbow trout Salmo gairdneri, smallmouth bass (Micropterus dolomieui), and forage species. For the period November 1987 through February 1988, an estimated 4339 angler-hours were expended to catch 430 rainbow trout. An estimated 20 bull trout Salvelinus confluentus, 4 smallmouth bass, and 4 suckers Catostomus spp. were also caught. Catch rates were generally poor through the period, at .091 fish per hour for all species combined (excluding kokanee). Shasta strain hatchery rainbow trout were dominant in the creel, comprising 53.9 percent of the catch, although this strain was last planted in the reservoir in June 1986. Bank anglers caught a higher percentage (93.5 percent) of the total catch of Shasta strain rainbows than Kamloops strain rainbows (33.3 percent). 11 refs., 4 figs., 6 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:
- 6304335
- Report Number(s):
- DOE/BP-35165-1; ON: DE89011651
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
Banks Lake Fishery Evaluation Annual Report 2002-2003.
Banks Lake Fishery Evaluation Project Annual Report : Fiscal Year 2008 (March 1, 2008 to February 1, 2009).
Related Subjects
54 ENVIRONMENTAL SCIENCES
FISHES
POPULATION DYNAMICS
POWER GENERATION
ENVIRONMENTAL IMPACTS
BONNEVILLE POWER ADMINISTRATION
CONSTRUCTION
DAMS
FISHERIES
FOOD
INDIAN ORGANIZATIONS
PROGRESS REPORT
TROUT
WATER RESERVOIRS
ANIMALS
AQUATIC ORGANISMS
DOCUMENT TYPES
NATIONAL ORGANIZATIONS
SURFACE WATERS
US DOE
US ORGANIZATIONS
VERTEBRATES
Smallmouth bass - Idaho - Dworshak Reservoir
Rainbow trout - Idaho - Dworshak Reservoir
Fishes - Effect of dams on - Idaho
130600* - Hydro Energy- Environmental Aspects
520500 - Environment
Aquatic- Site Resource & Use Studies- (-1989)