Summary of escapement index counts of Chinook salmon in the northern Cook Inlet management area, 1958-1996
By: by Robert Lafferty.
Contributors: Alaska. Division of Sport Fish.
Series: Fishery data series -- no. 97-8.
Publisher: Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services
Published: 1997
Place of publication: Anchorage
Language: eng
Number of pages: 79
Subjects: Chinoook salmon -- Alaska -- Cook Inlet -- Statistics.; Salmon fisheries -- Alaska -- Cook Inlet -- Statistics.; Fish populations -- Alaska -- Cook Inlet -- Measurement.
Description: Escapement index counts of chinook salmon Oncorhynchus tshawytscha have been conducted in streams of Northern Cook Inlet Management Area since 1958. Spawning chinook salmon have been counted from both helicopters and fixed-wing aircraft. Eighty-eight streams have been documented to contain spawning chinook salmon in the Northern Cook Inlet Management Area. Aerial escapement index counts are conducted on 17 streams on an annual basis (1977-1996), and it is believed that 50% to 60% of the chinook salmon production of Northern Cook Inlet returns to these 17 streams. Escapement counts from weirs were compared to escapement index counts; index counts averaged 46% agreement with weir counts. Four years of paired escapement index counts from three observers had 93% agreement.
Notes: "March 1997"

Includes bibliographical references (p. 12-16)

Also issued online.