Fisheries, Subsistence, and Habitat
Publications Searchable Database
Search Again| Division: | Sport Fish |
| Title: | Estimates of Chinook salmon passage in the Kenai River using split-beam and dual-frequency identification sonars, 2011 |
| Author: | Miller, J. D., D. L. Burwen and S. J. Fleischman |
| Year: | 2014 |
| Report ID: | Alaska Department of Fish and Game, Fishery Data Series No. 14-18, Anchorage |
| Abstract: | Kenai River Chinook salmon (Oncorhynchus tshawytscha) passage was estimated in 2011 using split-beam sonar and experimental dual-frequency identification sonar (DIDSON). Both sonar systems operated from 16 May to 10 August. Based on split-beam echo-length standard deviation measurements, total upstream passage of Chinook salmon was estimated to be 10,561 (SE 393) fish during the early run (16 May–30 June) and 37,261 (SE 2,057) fish during the late run (1 July–10 August). Based on DIDSON length measurements, estimates of Chinook salmon passage were 7,366 (SE 318) fish for the early run (16 May–30 June) and 23,713 (SE 725) fish for the late run (1 July–10 August). It is recommended that split-beam sonar estimates be discontinued in favor of DIDSON-based estimates in 2012. |
| Keywords: | split-beam sonar, DIDSON, Chinook salmon, Oncorhynchus tshawytscha, acoustic assessment, Kenai River, riverine sonar, early run, late run |