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County Flood Programs & Information

Public Hearing about County Flood Regulations

Tuesday, November 24, 2020

Board of County Commissioners Public Hearing: Tuesday, November 24, 2020 at 3 p.m.
The hearing is on a proposed final ordinance to ensure County compliance with the National Flood Insurance Program by amending Thurston County Code Chapter 14.38 TCC Development in Flood Hazard Areas. The proposed ordinance would finalize amendments to Chapter 14.38 TCC Development in Flood Hazard Areas initially adopted with interim Ordinance No. 15905 on June 16, 2020.  The amendments are primarily technical and do not add new requirements over and above current requirements for development in flood hazard areas. No changes are proposed for the final amendments. The Board may take action after the hearing on November 24th or at a subsequent Board meeting.  Thurston County was required by the Federal Emergency Management Agency to review and update its floodplain development regulations by June 19, 2020.  

Document Draft Ordinance

The new regulations
    • Add and update cross-references between code sections
    • Add and update technical definitions and clarifications
    • Indicate what records need to be kept by the county
    • Add a new section allowing for agricultural sanctuary structures

Hearing Date, Time & Location
Tuesday, November 24, 2020 at 3 p.m., or soon thereafter.

Thurston County Courthouse Complex, Building 1
Second Floor, Room 280
2000 Lakeridge Dr. SW
Olympia, WA 98502

How to Comment on the Proposed Changes
Those wishing to testify should either:
  • Appear and be heard at the location listed above.
  • Connect using Zoom, the internet meeting service used by the County. Details about how to connect will be posted on the Board’s Public Hearings Page prior to the meeting.  
  • Mail or email comments by 12 p.m. on Tuesday, November 24, 2020, to:
Jeremy Davis, CFM
Operations Manager
Thurston County Community Planning and Economic Development 
Building 1, Thurston County Courthouse Complex
2000 Lakeridge Drive SW
Olympia, WA 98502

  • If you have questions about the hearing topic, please contact Jeremy Davis at (360) 867-2103 or by email at
  • To request disability accommodations, please contact the County's Reasonable Accommodation Coordinator at least three days prior to the meeting at 360-786-5440. Persons with speech or hearing disabilities may call via Washington Relay:  711 or 800-833-6388.

Flooding in Thurston County

Floods are the most common natural hazard in Thurston County.  Our average annual rainfall of 50 inches can lead to river, stream, and groundwater flooding.  Many County departments provide programs and services to help citizens keep themselves, and their property safe.  Find links to available information and programs below.

Emergency Alerts 
Sign up to receive text or email alerts about hazardous conditions, including flooding.

Check Thurston County Rainfall & Water Levels
County staff monitor rainfall and water levels throughout the County. Check current water levels for Thurston County rivers and lakes by going to a site below.

Emergency Management
The emergency management department can help you prepare for flood season.

Public Works Road Closure Information

To find out up to date information on road closures or to report a road hazard issue, please go to the link below.  Turn around, dont't drown! Do not drive in flooded areas.

Development Regulations for Flood Hazard Areas
The County regulates construction in flood hazard areas to protect residents and property from flooding. These standards also preserve floodplains as a natural means of flood control.  

County Flood Plans 
Flood Maps 
Use a County map to see if a Thurston County property address or parcel is within a mapped flood hazard area.  Our staff work hard to make great maps, but they do not meet engineering, legal or survey standards. Consult with experts before making decisions.
Flood Insurance
If you live in a flood hazard area of unincorporated Thurston County, consider investing in flood insurance.  Insurance through the National Flood Insurance Program is available in Thurston County.  Please be advised, there is a 30-day waiting period before your policy may go into effect.  Thurston County government is active in the Federal Emergency Management Act (FEMA) Community Rating System, which means you may be eligible for a discount.  Be proactive and buy flood insurance before you need it.
Public Health and Social Services
Find information on flood-related health issues, clean-up guidelines, water purification and food safety. 
Thurston County Water Resources and Water Planning
The County's Public Works Water Resources Division actively manages the County's system of storm drains, pipes and ponds (also called stormwater facilities) making sure they move millions of gallons of rainwater runoff away from County homes and roads.  Learn how to find and properly prepare your neighborhood stormwater facilities for the rainy season.
Shoreline Management & Natural Resources Program
Learn about Thurston County's program to protect shorelines, promote public access and establish priorities for shoreline uses along shorelines and flood areas of the County's rivers and streams.  Also learn about shellfish protection, watershed planning, conservation futures and other initiatives.