County of Asotin

Regional Stormwater Program

Inform. Educate. Prevent.

Annual Reports

The NPDES Phase II Permit requires that Stormwater Management Plans and Annual Reports are submitted each year to the Department of Ecology by March 31st. To view the current and past annual reports and Stormwater Management Plans, see the links below. If you need to view these documents in another format, contact

Jeff Wiemer
Regional Stormwater Coordinator

2019 Stormwater Management Plans

2019 Regional Stormwater Management Plan

2018 Annual Reports

Asotin County
City of Asotin
City of Clarkston