Mission: The mission of the Flood Authority is to minimize hazards associated with flooding and catastrophic flooding and do so without further impact to impact people, property, and the environment.

Chehalis River Basin Flood Authority

Decision making in the Chehalis River Basin is informed by science, protective of basin residents and communities, and are environmentally appropriate. The Flood Authority administers local flood projects and the flood warning system within the Chehalis River Basin.

 Who We Are

The Flood Authority is locally driven and helps communities identify, develop, and implement local flood hazard reduction solutions. The following are the jurisdictions represented in the Chehalis Basin Flood Authority.

Grays Harbor County (2008)                         Lewis County (2008)                         Thurston County (2008)

   City of Aberdeen (2008)                                City of Centralia (2008)                     Town of Bucoda (2008)

   City of Cosmopolis (2011)                             City of Chehalis (2008) 

   City of Hoquiam (2017)                                 City of Napavine (2011)

   City of Montesano (2008)                              Town of Pe Ell (2008)

   City of Oakville (2008)

Quick Links 

Office of Chehalis Basin                                 Chehalis River Basin Flood Control Zone District                                      

Chehalis Basin Strategy                                                Chehalis River Basin Flood Warning System         

Chehalis Basin Board

In the News

 The Daily Chronicle

The Daily World