Burczynski, J JKarp, W AOlson FW;White RG;Hamre RH;2024-04-262024-04-261985https://hdl.handle.net/20.500.14394/26052ISBN 0-913235-37-7Hydroacoustic 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.fish populationsurveyPelagic fishadultjuvenilerainbow smeltsmeltarticle