King County flood alerts
Sign up for Cedar River flood alerts
Check your river gage data
A river gage station is a location where hydrologists, or scientists who study the flow of water, gather information such as the height and depth of a river and the speed of the water flow.
King County flood programs
Learn about King County’s Flood Buyout Program
Learn how to prepare for a flood
Free sandbag materials are available in Renton and Black Diamond
See when certain areas flood using the Cedar River Flood Level Viewer
View historical flood photos taken by aircraft
Learn more about creating a flood resilient future in your watershed
Visit the flood plan
Learn about the Cedar River Capital Investment Strategy, adopted by the King County Flood Control District, which lays out a plan of action to reduce flood risks.
The most effective strategies for King County to reduce flood risk in the Cedar River watershed have been to:
- Build setback levees;
- Buy flood and erosion prone properties from willing sellers.
Both buyouts and setback levees allow for opportunities to restore natural areas. This provides space for the river velocity to slow down, and side-channels where water can flow away from human developments. Restoring natural areas also provides habitat for fish and wildlife.
There are no new facilities currently planned in the Cedar River watershed. King County, as service provider to the King County Flood Control District, regularly monitors and maintains levees and revetments to reduce flood risks throughout the watershed. Learn more about some of the projects, such as repairs planned for several facilities, in the Current Capital Projects section below. Upgrading older levees to contemporary standards that are more robust and fish-friendly will reduce flood risk throughout the watershed.