Stormwater Action Monitoring - Effectiveness studies

SAM's effectiveness studies measure the stormwater management actions in Western Washington and communicate useful findings on what works and what doesn't work.

The Stormwater Work Group determines the SAM study topics. We are looking for new projects for this permit cycle, see our process for new projects below. 

SAM Effectiveness Studies icon

What are we learning?

Stormwater Action Monitoring (SAM) has sixteen effectiveness studies under contract so far during the 2013-2018 permit cycle. SAM effectiveness projects can occur at site or regional scales and the results can be used across jurisdictions. 

Completed SAM effectiveness studies list

What is the process for new projects?

The Stormwater Work Group is wrapping up a year-long stakeholder process to select the SAM study topics for the next permit term. The SWG's caucuses and technical subgroups met to discuss and further narrow the list of topics developed at the February 2019 SAM priorities workshop. The SWG will recommend a final list of study topics at their June 5, 2019, meeting.  A third solicitation process will begin in fall 2019 using topics recommended by the SWG in June 2019. New projects might begin as soon as fall 2020.

For the 2013-2018 permit term the topics were:

  • Low Impact Development (LIDs)

  • Retrofits

  • Source control

  • Operation and maintenance

  • Public education/behavior change