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Title: Monitoring the Migrations of Wild Snake River Spring/Summer Chinook Salmon Smolts, 2001-2002 Annual Report.

This report details the 2002 results from an ongoing project to monitor the migration behavior of wild spring/summer chinook salmon smolts in the Snake River Basin. The report also discusses trends in the cumulative data collected for this project from Oregon and Idaho streams since 1989. The project was initiated after detection data from passive-integrated-transponder tags (PIT tags) had shown distinct differences in migration patterns between wild and hatchery fish for three consecutive years. National Marine Fisheries Service (NMFS) investigators first observed these differences in 1989. The data originated from tagging and interrogation operations begun in 1988 to evaluate smolt transportation for the U.S. Army Corps of Engineers. In 1991, the Bonneville Power Administration began a cooperative effort with NMFS to expand tagging and interrogation of wild fish. Project goals were to characterize the outmigration timing of these fish, to determine whether consistent migration patterns would emerge, and to investigate the influence of environmental factors on the timing and distribution of these migrations. In 1992, the Oregon Department of Fish and Wildlife (ODFW) began an independent program of PIT tagging wild chinook salmon parr in the Grande Ronde and Imnaha River Basins in northeast Oregon. Since then, ODFW has reportedmore » all tagging, detection, and timing information on fish from these streams. However, with ODFW concurrence, NMFS will continue to report arrival timing of these fish at Lower Granite Dam.« less
Authors:
; ;  [1]
  1. (National Marine Fisheries Service, Northwest Fisheries Science Center, Seattle, WA)
Publication Date:
OSTI Identifier:
823101
Report Number(s):
DOE/BP-00005619-2
R&D Project: 199102800; TRN: US200415%%184
DOE Contract Number:
00005619
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jul 2003
Research Org:
Bonneville Power Administration, Portland, OR (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; BONNEVILLE POWER ADMINISTRATION; DETECTION; DISTRIBUTION; FISHERIES; GRANITES; IDAHO; MONITORING; MONITORS; OREGON; RIVERS; SALMON; US CORPS OF ENGINEERS; CHINOOK SALMON - MIGRATION - SNAKE RIVER WATERSHED (WYO.-WASH.) - STATISTICS