Surface Water Management

Keeping People Safe and Waters Healthy


Snohomish County provides essential services to safeguard your health and our environment through its stormwater utility, Surface Water Management (SWM). You can see us in your community as we help people fix drainage problems, clean up water pollution and improve stormwater systems. These services are funded by a utility charge paid by people in unincorporated Snohomish County.
Clean Water Information
Drainage Information
Habitat Information
River Flooding Information


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Discretionary Fund rebates now available!

The Stillaguamish Discretionary Fund rebate program helps landowners, community groups, and non-profit organizations carry out water quality improvement projects in the former Stillaguamish Clean Water District. The voluntary, non-regulatory program offers funding for small projects on private or public property that will provide shellfish protection benefits in Port Susan or South Skagit Bay.

To learn more about the program and access application materials, visit: https://snohomishcountywa.gov/1208/Discretionary-Fund-Rebate-Program.

Please note that funding for rebates is limited and available on a first-come, first-served basis until program funds are exhausted.

SWM 2018 Newsletter


Learn how we keep you safe and our waters healthy. View our newsletter.

SWM Utility Business Plan


Currently, Snohomish County is developing a plan to improve stormwater utility services we provide you while keeping costs down.