Copper River Salmon Marketing Group Funds Additional Sonar Station to Assist ADF&G
SEAFOODNEWS.COM [SeafoodNews] June 9, 2016
This year, the Copper River/Prince William Sound Marketing Association funded a sonar project, operated by the Prince William Sound Science Center, to enumerate salmon passing through the lower Copper River on their way to the spawning grounds.
Using DIDSON (Dual Frequency Identification Sonar), technicians could “see” salmon swimming upriver. Following the same methodology as the Alaska Department of Fish and Game (ADF&G), salmon were counted by hand as they passed on screen. A daily passage estimate was calculated from these counts and relayed to fishery managers at ADF&G. Because of its location, this sonar counted salmon entering the river days before the Miles Lake sonar.
Why two sonar sites? The Miles Lake sonar project
To Read Full Story Login Below.