Stormwater Action Monitoring - status & trends studies

Stormwater Action Monitoring (SAM) conducts status and trend monitoring in Western Washington streams and nearshore marine waters.

Two study regions: Watersheds of the Puget Sound and Lower Columbia (click the map to enlarge)

What is the goal?

The overall goal of the status and trend monitoring program is to provide a regional assessment of whether collective stormwater management actions are leading to improved receiving water conditions in Western Washington.

Where do we monitor?

SAM's receiving water monitoring program focuses on two regions: Puget Sound and Lower Columbia River.

Three Puget Sound regional studies completed their first round of monitoring in 2015-2018. Learn more about the studies in Puget lowland streams and Puget Sound nearshore.

Lower Columbia regional urban stream monitoring will start in 2020.  

What are we learning?