Title

The Application of Dual-Beam Acoustic Survey Techniques for Fish Population Estimation in Lakes

Publication Date

1985

Notes

ISBN 0-913235-37-7

Publication Title

Proceedings of the Symposium on Small Hydropower and Fisheries

Start Page

472

End Page

474

Editors

Olson FW;White RG;Hamre RH;

Publication Place

Bethesda, MD

Publisher

American Fisheries Society

Abstract

Hydroacoustic surveys were conducted on Cultus Lake in British Columbia and Lake Oahe in South Dakota in July, 1983. Dual-beam and echo integration techniques were employed. Estimates of pelagic fish abundance were obtained at Cultus Lake compared well with those obtained from mid-water trawl samples. Acoustic target strength data collected at Lake Oahe indicated a bimodal size distribution of fish; mid-water trawl samples indicated that this distribution was due to the presence of adult and juvenile rainbow smelt.

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