Natural Propagation and Habitat Improvement, Volume III, Idaho, 1982/1983 Final and Annual Reports.
In 1983 and under the auspices of the Northwest Power Act, the Clearwater National Forest and Bonneville Power Administration entered into an agreement to improve anadromous fish habitat in three major tributaries of the Clearwater River in Idaho. Phase I (FY 83) habitat enhancement was initiated and completed on Lolo, Crooked Fork, and White Sand Creeks. Enhancement of Lolo Creek involved the placement of 145 structures that were designed to alter the pool/riffle structure, increase diversity and cover, and purge in-stream sediment over 8.5 miles of stream length. Log weirs, organic debris, and boulder clusters were featured in the enhancement design. For the Lolo Project, the average unit cost was $186/structure. Spring chinook salmon was the primary target species and were observed utilizing the enhanced habitat in September. Enhancement of the upper Lochsa River tributaries involved the placement of 263 structures of which 200 were felled riparian trees and 63 were anchored organic debris. Enhancement occurred over 9.1 miles of stream reaches and was designed to increase diversity, cover, and spawning habitat. Depressed stocks of spring chinook salmon and summer steelhead trout were the focal points of the enhancement. The average cost per structure equaled $91/unit. Because of a mixed ownership pattern and in-channel variables, only 50 percent of the total stream distance was available for enhancement. 6 references, 68 figures.
- Research Organization:
- US Forest Service (USFS)
- Sponsoring Organization:
- United States. Bonneville Power Administration.
- DOE Contract Number:
- 1983BP11980
- OSTI ID:
- 6540495
- Report Number(s):
- DOE/BP-248; R&D Project: 1983-522-00; ON: DE84016656
- Resource Relation:
- Other Information: Portions are illegible in microfiche products. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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