Stormwater Management Manual

The 2019 State Department of Ecology Stormwater Management Manual for Western Washington can be accessed from Ecology's stormwater information website. Under the "Technical Information" heading, you will find a link to the Manual. Hard copy of the Manual can be ordered from Ecology.

As a companion to the Stormwater Manual, the January 2005 Low Impact Development Technical Guidance Manual for Puget Sound is available from the Puget Sound Action Team.