Water Quality Program

The Water Quality Program coordinates the county-wide response to federal and state clean water regulations. The goal of the program is to protect the health of our streams, streamside areas and wetlands by avoiding impacts to streams from County operations and improving water quality.

For questions or comments about the County's streams:
waterquality@multco.us
971.276.1387
1620 SE 190th Ave.
Portland, OR 97233

NEW UPDATE: Public invited to comment on the DRAFT 2022 Multnomah County Stormwater Management Plan - September 23 - October 24. Written public comments on the plan can be submitted by October 24 at 5pm to the Water Quality Program at the contact information above. Please find the Draft Stormwater Management Plan on the Reports and Plans web page.