Evaluation of Lower Umatilla River Channel Modifications Below Three Mile Dam, 1984 Annual Progress Report.
This report summarizes results of the first year of a study initiated in September 1984 to evaluate the adequacy of channel modifications made in the lower Umatilla River to improve adult anadromous salmonid passage to Three Mile Dam (RKm 5.6), determine if fish passage or delay problems exist at Three Mile Dam and recommend site specific corrective measures if needed. Movements of steelhead (Salmo gairdneri) were monitored using mark and recapture and radio telemetry techniques. Thirty-four steelhead were marked with T-anchor tags and released in the lower river. Fifteen of those marked were also fitted with radio transmitters. Three radiotagged steelhead migrated through channel modifications to Three Mile Dam. Two of these fish migrated to the dam in less than 26 hours, but held just below the dam for 7 and 10 days before entering the ladders. The third steelhead delayed for 30 days and entered the west ladder within 24 hours of arrival at the dam. Two other radiotagged steelhead moved upstream through some of the channel modifications but did not migrate to the dam. Only one of 19 marked steelhead not fitted with transmitters was recovered at Three Mile Dam. 14 refs., 18 figs., 3 tabs.
- Research Organization:
- Oregon Department of Fish and Wildlife. (ODFW)
- Sponsoring Organization:
- United States. Bonneville Power Administration.
- DOE Contract Number:
- 1984BP19130
- OSTI ID:
- 5710271
- Report Number(s):
- DOE/BP-19130-1; R&D Project: 1983-834-00; ON: DE85011972
- Country of Publication:
- United States
- Language:
- English
Similar Records
Environmental Assessment on BPA's Proposed Funding of Lower Umatilla River Anadromous Salmonid Passage Enhancement Projects, FY 1983.
Evaluation of Juvenile Fish Bypass and Adult Fish Passage Facilities at Water Diversions on the Umatilla River; 1994 Annual Report.
Related Subjects
FISH PASSAGE FACILITIES
EVALUATION
TROUT
MIGRATION
BONNEVILLE POWER ADMINISTRATION
POPULATION DYNAMICS
RIVERS
ANIMALS
AQUATIC ORGANISMS
FISHES
NATIONAL ORGANIZATIONS
STREAMS
SURFACE WATERS
US DOE
US ORGANIZATIONS
VERTEBRATES
Stream channelization - Oregon - Umatilla River
Fishes - Migration - Oregon - Umatilla River
520500* - Environment
Aquatic- Site Resource & Use Studies- (-1989)