Chinook salmon spawner stocks in California's Central Valley, 1989: annual report

Kano, Robert M. (ed.) (1998) Chinook salmon spawner stocks in California's Central Valley, 1989: annual report. Sacramento, CA, California Department of Fish and Game, (Inland Fisheries Administrative Report, 98-2)

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Abstract

This report covers the 37th annual inventory of chinook salman, Oncorhynchus tshawytscha, spawner populations in the Sacramento-San Joaquin River system.-It is a compilation of reports estimating the fall-, winter-, late-fall-, and spring-run salmon spawner populations for streams which were surveyed. Estimates were made from counts of fish entering hatcheries and migrating past dams, froro surveys of dead and live fish and redds on spawning areas, and from aerial counts. The estimated 1989 total escapement of chinook salmon in the Central Valley was 205,990 fish. This total consisted of 181,864 fall-, 12,171 spring-, 539 winter-, and 11,416 late-fall-run spawners. All of the spring-, late-fall-, and winter-run salmon were estimated to be in the Sacramento River system, while 3,493 fish of the fall run were in the San Joaquin River system. Due to decreases of spawner populations in most Central Valley tributaries, the total 1989 salmon stock was 32% lower than in 1988; however, late-fall salmon in the upper Sacramento River had a run size similar to that of 1988. The winter run in the mainstem Sacramento River was at a record low level. (PDF contains 44 pages.)

Item Type: Monograph or Serial Issue
Title: Chinook salmon spawner stocks in California's Central Valley, 1989: annual report
Editors:
EditorsEmail
Kano, Robert M.
Series Name: Inland Fisheries Administrative Report
Number: 98-2
Date: 1998
Publisher: California Department of Fish and Game
Place of Publication: Sacramento, CA
Issuing Agency: California Department of Fish and Game
Uncontrolled Keywords: Chinook salmon; Onocorhynchus tshawytsha; spawner; Sacramento River; San Joaquin River; dams; aerial count, fish stock
Subjects: Management
Fisheries
Biology
Item ID: 2654
Depositing User: Joan Parker
Date Deposited: 03 Feb 2010 13:07
Last Modified: 29 Sep 2011 18:39
URI: http://aquaticcommons.org/id/eprint/2654

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