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‚ÄčKootenai River Ecosystem
Boundary County, Idaho

The Kootenai Tribe of Idaho and Idaho Fish and Game originally proposed to initiate a controlled nutrient restoration effort in the mainstream Kootenai River near the Montana-Idaho border. The project proposed to add liquid nitrogen and phosphorus to the river beginning in the summer of 2005. After a ten-year pilot and successful results from the nutrient addition, the Kootenai Tribe proposed to continue the program.

In 2005, the Bonneville Power Administration (BPA) completed the Kootenai River Ecosystem Environmental Assessment (DOE/EA-1518) and Finding of No Significant Impact (FONSI) that addressed the potential environmental effects of the Kootenai River Ecosystem Project. This project involved BPA funding of the Kootenai Tribe of Idaho (Kootenai Tribe), in partnership with the Idaho Department of Fish and Game (IDFG), to add nutrients (liquid phosphorus and nitrogen) to the Kootenai River. The project is intended to help stimulate production in the Kootenai River's depleted food web to improve overall river health in order to enhance native fish populations such as bull trout, kokanee, mountain whitefish, burbot, and white sturgeon.

As a result of the 2005 Final Environmental Assessment (EA) and FONSI, BPA decided to fund the Kootenai River Ecosystem Project for up to five years (beginning in 2006), with possible project extensions depending on results of fish and water quality monitoring and subject to further environmental analysis and documentation. Monitoring results are now available, and these show that the effects of the nutrient addition on the food chain, ecosystem, and water quality have been beneficial. Because of these positive results, BPA now is continuing to fund the project with the refinements described in the supplemental analysis (SA) below. The supplemental analysis was approved September 9, 2012. BPA will conduct additional environmental review in the future, if necessary.

For further information on this project, please contact or 503-230-4628. 


Review for Substantial Change in the Proposed Action or Significant New Circumstances or Information   (09/06/2012)

Public Letter                                                (06/15/2005)
Final Environmental Assessment (EA)             (June 2005)
Finding of No Significant Impact (FONSI)          (06/15/2005)

Public Letter                                                (04/18/2005)
Preliminary Environmental Assessment           (04/18/2005)

Public Letter                                                  (11/22/2004)
Questions and Answers Fact Sheet                  (November 2004)