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Alaska Department of Fish and Game

Most ADF&G website information and services will not be available on Sunday, October 11 as the State of Alaska will be doing planned maintenance in Juneau on that date between 5 am – 9 pm AKST. We apologize for any inconvenience this may cause.

Alaska Fisheries Sonar

Chilkat River

Chilkat River

The site is located on a narrow slough between Tsirku River and Chilkat Lake. The slough is usually clear, but can become turbid with flooding.

The Alaska Department of Fish and Game operates a sonar project at the mouth of Chilkat Lake to monitor adult sockeye salmon escapement. Before the sonar project was installed, ADF&G relied on visual counts of Chilkat sockeye passage through a weir to produce escapement estimates. Weir counts were sometimes disrupted due to frequent boat passage and spikes in water turbidity. Now that sonar is used, fish counts can continue uninterrupted even when boat traffic and turbidity increase.