Development Regulations for Flood Hazard Areas
Farm in rainstorm

Development Regulations in Flood Areas

The County implements development standards and restrictions on building in flood hazard areas.  These standards protect residents and property from flooding, and they preserve floodplains as a natural means of flood control.  Floods are the most common natural hazard in Thurston County, and, on an annual basis, the most costly.  River, stream and groundwater flooding are the most common.

County flood services and information
Flood alerts & warnings
Sign up for alerts
County Flood Plans & Insurance
Flood bulletin (PDF)
Use our Flood Hazard Areas Map to see if your property is in a flood area
Report flooding

Contact Us
For information about building in a Special Flood Hazard Area, contact Tim Rubert at 867-2123, or e-mail