Stormwater services and information
Learn more about what stormwater is and what resources are available to help manage stormwater.
Stormwater resources for business and property owners
Find stormwater resources for businesses and property owners in unincorporated King County.
Technical guidance for stormwater projects
Stormwater permit-related resources and technical guidance.
Stormwater facilities
Information about what stormwater facilities are, types of stormwater facilities, and who maintains them in unincorporated King County.