January 19, 2012 | Vol. 39, No. 3

Fish Factor

New sonar web project lets users track salmon

Most people don’t know that 40 years ago Alaska pioneered the use of sonar to track salmon runs, or that state fishery managers operate 15 sonar sites on 13 rivers from Southeast to the Yukon.

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The goal of making Alaskans more aware of one of Ala...

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