- All of the Susitna River Sockeye (red) salmon is declared a stock of “yield concern” by the Alaska Board of Fisheries.
- The Susitna River Chinook (king) salmon population is the fourth largest in Alaska. The Alaska Board of Fisheries has declared the Susitna River tributaries’ Willow Creek and Goose Creek Chinook Salmon stocks to be stocks of yield concern. The Alaska Department of Fish and Game has also recommended that the Alexander Creek Chinook stock be declared a stock of concern.
- The Susitna River Chum (dog) salmon is recommended by the local government to be declared a stock of concern.
- 16 salmon spawning tributaries of the Susitna River had stream temperatures in 2008/2009 that exceeded salmon spawning temperature criteria during the summer months. These tributaries were: Alexander Creek, Byers Creek, Cache Creek, Chijuk Creek, Deception Creek, East Fork of the Chulitna River, Kroto (Deshka) Creek, Little Willow Creek, Montana Creek, Moose Creek (Talkeetna), Trapper Creek, Troublesome Creek, Willow Creek.
The above data from AEA Susitna Hydropower Project Aquatic Resources Gap Analysis and Susitna-Watana Hydro Project: Water Quality and Sediment Data Gap