Skip to main content
close

KingCounty.gov is an official government website.

Official government websites use .gov
Website addresses ending in .gov belong to official government organizations in the United States.
Secure .gov websites use HTTPS
A lock or https:// means you've safely connected to the .gov website. Only share sensitive information on official, secure websites.
King County Logo

Flood hazards

Learn about mapping and studies of flood hazards within King County's river and stream corridors.

Floodplain maps

View flood maps and see your flood risk.

Channel migration hazards

Learn about channel migration to protect yourself and your property.

Landslide hazards and maps

Learn about the locations and types of landslides that can occur in King County river corridors.

Flooding in King County watersheds

Learn about flooding, how you can protect yourself from flooding, and flood-related projects in your watershed.

Related Topics

Flood hazards

Maps and studies in our river and stream corridors.

Flood services

Find services, evaluate risk, prepare for a flood and find real-time flood data.

Flood warning system

Stay informed and get alerts about flooding.

Be ready for a flood

Protect yourself, your loved ones, and your home.

Road closures

View an interactive map of road closures in King County.

Get sandbags

Find free sandbag distribution sites.

Stormwater services

Information about stormwater and surface water management in King County.

Watershed flooding

Information and resources for flooding in King County watersheds.
expand_less