About this Website

This web site is designed to inform the public about the Stormwater Management Program, established by the City of Asotin, City of Clarkston and Asotin County in response to our new Stormwater regulatory obligations.

This site will be updated on a regular basis, so please check back. More information will be added as it is available.

Stormwater Management Team 2017 Meeting Dates

March 13 September 11
June 12 December 12

As a part of our program, the Regional Stormwater Maintenance Crew addresses stormwater drainage issues. The slide shows below highlight some projects that were accomplished. Click images to view.

Tips for Contractors

Contractors get help here to navigate through the requirements of the construction ordinances recently adopted by City of Asotin, City of Clarkston, and Asotin County.


If you have any questions, please contact Matt Carlson, Regional Stormwater Coordinator, at 509-243-2074 or mcarlson@co.asotin.wa.us


To report a spill or some other Stormwater problem, call 509-243-2071. For emergencies, call 911.


Calendar of Events

Management Team Meeting

The Stormwater Management Team will be meeting December 12th from 3:00 - 5:00 pm at the Commissioners Chambers at the Asotin County Courthouse Annex, 095 2nd Street, Asotin WA.




City of Asotin County of Asotin City of Clarkston