Skip to main content Skip to navigation
Washington State University

Coronavirus COVID-19

COVID-19 Advisory: WSU Extension is working to keep our communities safe. All Extension programming is being provided virtually, or by approved plan. Effective July 6, 2021, Snohomish County WSU Extension will have a limited administration presence at Willis Tucker Park (Snohomish). The McCollum Park campus (Everett) continues to be closed to the public.  We are available via email, phone, and webconference.

Rain Gardens

Program Contact: Rachel Schroeder, Rain Garden Program Coordinator
(425) 338-2400 •


A rain garden acts like a native forest by collecting, absorbing, and filtering stormwater runoff from roof tops, driveways, patios, and other areas that don’t allow water to soak in. Rain gardens can help clean up the Sound and protect aquatic life. When it rains or snows, more water flows from developed areas than undisturbed areas, carrying oil, fertilizers, pesticides, sediment and other pollutants downstream.

Snohomish County supports nearly 700,000 residents and continues to grow on a fast track. As we have lost native forests and replaced them with solid surfaces and stormwater sewers, water infiltration has decreased while surface water runoff has increased. The runoff has increased the severity of flooding and swept containments from our homes and streets directly into streams. Rain gardens give us the ability to mimic nature by increasing infiltration of stormwater that comes off our roofs, driveways and landscapes. This helps protect Puget Sound.

WSU – Snohomish County Extension, Snohomish County Surface Water Management, the Snohomish Conservation District and the City of Everett are offering information on rain gardens and Natural Yard Care throughout Snohomish County. Look for the rain garden booth at community festivals and fairs. You can also find information at the many Master Gardener clinics around the County.

For more information, visit the WSU Rain Garden Webpage.