Spokane River Geographic Response Plan (SPR-GRP)


The Spokane River sub basin is bordered by the Upper Columbia sub basin to the north, the Pend Oreille sub basin to the northeast, and the Coeur d’Alene sub basin to the east. The sub basin’s foremost river is the Spokane River. Its headwaters are formed by the outlet of Coeur d’Alene Lake in Idaho and flow westerly for nearly 112 miles to its confluence with the Columbia River on Lake Roosevelt in Washington. Major tributaries to the Spokane River, upstream to downstream, are Latah Creek (aka Hangman Creek), Little Spokane River, and Chamokane Creek (aka Tshimikain Creek).

View the Spokane River GRP (January 2012) (PDF 16.4 MB)


Interim Updates

In between plan updates, GRP strategies are tested during drills and actual spill events. The results of these tests may require changes to certain response strategies, notification strategies, staging areas, or boat launch locations. Eventually, these changes will be fully incorporated into the plan. Until that time, please use the updated strategy and information sheets below in lieu of that provided for similarly numbered locations in the published plan.

No interim updates currently available




How to Comment

If you have any questions or comments, suggestions for improvement, or find errors in this document please submit comments online at
http://www.rrt10nwac.com/Comment, email them to us at GRPs@ecy.wa.gov, or forward them via U.S. Mail to the following agencies:

United States Environmental Protection Agency
Region 10
Office of Environmental Cleanup
1200 Sixth Avenue
Room ECL-116
Seattle, WA 98101

Washington State Department of Ecology
Spill Prevention, Preparedness, and Response (GRPs)
P.O. Box 47600
Olympia, WA 98504-7600