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Share feedback about stormwater plans
Review and comment on our plans for managing stormwater in King County with this public survey. This includes stormwater regulatory updates, facility design guidelines, pollution prevention practices, and annual reports:
- Title 9 updates to meet regulatory requirements.
- Surface Water Design Manual, which describes the technical requirements for stormwater facilities.
- The 2021 Stormwater Pollution Prevention Manual updates, which describe best practices to manage stormwater on commercial, multi-family, and residential properties.
- Stormwater Management Plan (SWMP) which outlines what actions were done in the previous year to manage stormwater.
- Stormwater Management Action Plan (SMAP) which lays out what actions we plan for the coming year to manage stormwater.
Our Stormwater Management Program (SWMP) Plan lists our proposed actions to comply with the Phase I Municipal Stormwater National Pollutant Discharge Elimination System (NPDES) Permit (Phase I Permit) issued by the Washington State Department of Ecology.
The SWMP is also attached to our Annual Report, which provides information for our previous year's work related to the Phase I Permit.
The 2025 Stormwater Management Program Plan is currently open for public comment. Please let us know your feedback to help shape the SWMP Plan. Comments submitted after March 31 will be considered for next year's program plan.