Let's plan for flood resilience together

Flooding is our region’s most common natural disaster and is a part of life in King County. Flooding can be devastating to neighborhoods. Floods damage homes, destroy personal property and put lives at risk. Floods also affect access to jobs, stores and schools and can damage community open spaces. Flooding is likely to get more frequent and severe with climate change.

Natural disasters affect people differently, with some having a harder time recovering, or perhaps not recovering at all. Building flood resilience means that we are increasing the ability for people and communities to recover quickly from whatever impacts flooding brings to our doorsteps. Flooding will never disappear in King County, but being prepared can reduce the risks for communities, families, and individuals.

The flood plan guides how we manage flood risks and how the benefits of our efforts are distributed across the county. Information on this site is organized into five sections:

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Aerial photo of a flooded Snoqualmie Valley.

Snoqualmie River flooding near Duvall in December 2015.


For general information or assistance with questions about flooding, please contact:

King County River and Floodplain Management Section


For questions about the flood plan update, please contact:

Jason Wilkinson

Project Manager



For questions about flood plan community engagement opportunities or how to submit comments, please contact:

Chrys Bertolotto

Flood Plan Community Engagement Coordinator




October 2021 - September 2022

Tribal consultation

July 2022 - December 2023

Analyze technical, policy and programmatic elements; assess hazards and risk; develop action plan; develop plan content

October 2022 - December 2023

Phase 1: Community and partner engagement

October 2022 - June 2023

Gather community input to establish a shared vision for the flood plan. We are asking about flooding experiences, community priorities, and needs to build flood resilience.

  • November 7 - December 9, 2022: comment period on environmental impact statement (EIS) scope for State Environmental Policy Act review process (complete)

Phase 2: Community and partner engagement

July 2023 - September 2023

During this phase we will share specific strategies and priorities that are emerging and ask for your feedback and ideas on them. We will also share what we heard from you during Phase 1 and how your input is guiding the contents of the flood plan.

Phase 3: Community engagement

October 2023 - December 2023

We’ll share the draft flood plan and ask for your review and feedback to make sure we’re on the right track.

  • December 2023: comment period on draft flood plan
  • December 2023: comment period on draft environmental impact statement (EIS) for State Environmental Policy Act review process

Propose plan to King County Council

December 2023 - February 2024

King County Council considers plan

January 2024 - September 2024