Yentna River

The Yentna River extends 100 miles southeast from Mount Dall glacial system toward the Susitna River, featuring a 820-foot wide channel with mixed sediments.

The Alaska Department of Fish and Game established a sonar monitoring site at mile six of the Yentna River in 1986 after failed attempts along the Susitna River.

Known as Yentnu in the Dena'ina language, this river provides essential spawning grounds for five salmon species within the Cook Inlet drainage system.

Multiple fish counting stations with submerged sonar transducers monitor salmon populations, requiring regular adjustments due to water level changes and silt accumulation.

The Yentna River contributes more than half of the sockeye salmon production to the Susitna River, ranking third in productivity among Upper Cook Inlet waterways.

GPS coordinates: 61.96759,-151.10241

Latest update: October 29, 2025 18:35