Smolt Migration Characteristics and Mainstem Snake and Columbia River Detection Rates of PIT-Tagged Grande Ronde and Imnaha River Naturally-Produced Spring Chinook Salmon, 1996 Annual Report : Fish Research Project, Oregon.
This is the fifth year of a multi-year study to assess smolt migration characteristics and cumulative detection rates of naturally-produced chinook salmon (Oncorhynchus tshawytscha), from northeast Oregon streams. The goal of this project is to develop an understanding of interpopulation and interannual variation in several early life history characteristics of naturally-produced chinook salmon from the Grande Ronde and Imnaha River subbasins. This project provides information useful in the recovery of listed Snake River spring/summer chinook salmon. Specific populations included in the study are (1) Catherine Creek, (2) upper Grande Ronde River, (3) Lostine River, (4) Imnaha River, (5) Wenaha River, and (6) Minam River. In this document, we present findings from research completed in 1996. Naturally-produced chinook salmon populations in the Grande Ronde and Imnaha River subbasins have declined drastically in recent years due in part to habitat alterations and hydropower development. Declines have continued despite extensive mitigation efforts, including fish passage improvements, artificial production, supplementation, and habitat modification (BPA Division of Fish and Wildlife 1990). Snake River spring/summer chinook salmon (hereafter referred to as chinook salmon), which include naturally-produced chinook salmon in the Grande Ronde and Imnaha River subbasins, have been listed under the Endangered Species Act of 1973 as threatened or endangered since 1992.
- Research Organization:
- Oregon Dept. of Fish and Wildlife, Portland, OR (United States)
- Sponsoring Organization:
- US Bonneville Power Administration
- DOE Contract Number:
- 1988FC38906
- OSTI ID:
- 563831
- Report Number(s):
- DOE/BP-38906-9; ON: DE98001792; TRN: 98:000699
- Resource Relation:
- Other Information: PBD: [1998]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Grande Ronde Basin Spring Chinook Salmon Captive Broodstock Program, 1995-2002 Summary Report.
Investigations into the Early Life History of Naturally Spring Chinook Salmon in the Grande Ronde River Basin : Fish Research Project Oregon : Annual Progress Report Project Period 1 September 1997 to 31 August 1998.
Related Subjects
13 HYDRO ENERGY
29 ENERGY PLANNING AND POLICY
SALMON
OREGON
POPULATION DYNAMICS
MIGRATION
MONITORING
RESOURCE MANAGEMENT
RESEARCH PROGRAMS
DAMS
FISH PASSAGE FACILITIES
Chinook salmon - Migration - Grande Ronde River Watershed (Or. and Wash.) - Statistics
Chinook salmon - Migration - Oregon - Imnaha River Watershed - Statistics