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Brownlee - Swan Falls Subpopulation Status and Trends

Dillon, J. and S.A. Grunder. 2008. Management plan for the conservation of Snake River white sturgeon in Idaho. Idaho Department of Fish and Game, Boise, ID.

To view all subpopulations in the basin click here
Few white sturgeon inhabit the Brownlee Dam to Swan Falls Dam reach, despite being the longest riverine section within the series of upper Snake River reservoirs. In 1981, only one sturgeon was captured during a survey. A 1997 assessment of white sturgeon (>35 inches) resulted in an abundance estimate of 155 fish (7 fish/km) from Swan Falls Dam to Walters Ferry. Multiple studies have led managers to characterize the white sturgeon population as being one that has little or no recruitment. Due to suitable habitat being limited for juvenile and adult white sturgeon combined with water quality issues, managers believe it is unlikely the population will recover to self-sustaining levels in the near future.








Abundance



* Monitoring did not occur during years for which data do not exist.

Density


No data available at this time.

Productivity


No data available at this time.

Hatchery Releases


No releases

Harvest


There is no harvest since catch-and-release regulations are in effect for this subpopulation.


See other data snapshots that help us gauge the abundance of fish and wildlife:

Subpopulations for Upper Snake Management Unit

Other Management Units - Subpopulations