Chehalis River Basin Flood Authority

Mission: The Chehalis River Basin Flood Authority (Flood Authority) works to reduce flood hazards and minimize adverse impacts to people, property, and the environment in the Chehalis River Basin.

Chehalis River Basin Flood Authority

The Flood Authority oversees the Chehalis River Basin Flood Warning System and administers locally driven projects that reduce flood-related impacts througout the Basin. Established in 2008, the Flood Authority is made of 10 towns and cities and three counties in the Basin. We strive to make decisions that are:

  • Informed by science
  • Protective of basin residents and communities
  • Environmentally appropriate 

The December 2007 flood severely impacts Chehalis River Basin communities and businesses. In response to the need for coordinated efforts including analysis and implementation of flood control projects in the Chehalis River Basin, representatives from Lewis, Thurston, and Grays Harbor Counties, local cities, and a representative of the Confederated Tribes of the Chehalis Reservation entered into an interlocal agreement and formed the Chehalis River Basin Flood Authority. The Flood Authority is locally driven and helps communities identify, develop, and implement local flood hazard reduction solutions.   

 

 Who We Are

The Flood Authority represents the following jurisdictions in the Basin, including the year each town, city, or county joined.

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

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