Smolt Passage Behavior and Flow-Net Relationships in the Forebay of John Day Dam, 1983 Annual Report of Research.
During 1983, the research program had three separate but complementary phases - monitoring current patterns in the forebay, defining fish distribution with purse seine sampling, and describing the migration routes of salmonid smolts using radio tracking techniques. Preliminary results from the radio-tracking and purse seining operations in FY 1983 suggest that the discharge from the John Day River and the turbid plume it forms in the forebay may have a pronounced effect on the distribution of smolts, especially chinook and sockeye salmon, as they approach the dam. The implication of these data is that the plume may be shunting salmon toward the Washington (spill) side of the river where they would be more susceptible to spill passage. This resulted in higher spill passage of tagged chinook salmon than the proportion of water being spilled. In contrast, sillway passage of steelhead not influenced by the plume is approximately the same as the proportion of water being spilled. These findings are based on limited data and must be considered preliminary at this time. Data describing the current patterns have just recently been reduced to a usable format and have not yet been correlated with findings from radio tracking and purse seining. Such data will be icorporated into an overall analysis of the relations of current patterns and John Day River discharge to fish migration patterns. Representative examples of prevailing current patterns during the spring migration have been completed and are included in this document. 10 refs., 14 figs., 6 tabs.
- Research Organization:
- Bioanalysts, Inc.
- Sponsoring Organization:
- United States. Bonneville Power Administration.
- DOE Contract Number:
- 1983BP39644
- OSTI ID:
- 5447631
- Report Number(s):
- DOE/BP-347; R&D Project: 1982-008-00; ON: DE85016331
- Resource Relation:
- Related Information: As of 3/4/04, this document was missing the last part of appendix C.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Smolt Passage Behavior and Flow-Net Relationship in the Forebay of John Day Dam, 1984-1985 Final Report of Research.
Monitoring and Evaluation of Smolt Migration in the Columbia Basin : Volume IX : Evaluation of the 2001 Predictions of the Run-Timing of Wild and Hatchery-Reared Migrant Salmon and Steelhead Trout Migrating to Lower Granite, Rock Island, McNary, and John Day Dams using Program RealTime.
Related Subjects
SALMON
MONITORING
SAMPLING
FISH PASSAGE FACILITIES
MIGRATION
OREGON
PLUMES
RIVERS
WASHINGTON
ANADROMOUS FISHES
ANIMALS
AQUATIC ORGANISMS
FEDERAL REGION X
FISHES
NORTH AMERICA
STREAMS
SURFACE WATERS
USA
VERTEBRATES
Salmon - Effect of water levels on 0 John Day Dam (Or. and Wash.)
520100* - Environment
Aquatic- Basic Studies- (-1989)