The Governor, the legislature, state and federal agencies, tribes, and communities within the Chehalis Basin have joined together in an organized process, the Chehalis Basin Strategy, to produce the best science for solutions to the problem of reducing catastrophic flood damage and to enhance and restore habitat for aquatic species within the basin. 


There are many interested parties and organizations in the Chehalis River Basin. The organizations listed below are a few of the key partners that the Flood Control Zone is working with to accomplish our goals. This infographic may also help explain roles, responsibilities, and relationships.

Office of the Chehalis Basin - In 2016 the Washington Legislature created a new Office of Chehalis Basin, which started operating within the Department of Ecology on July 1, 2017. The office was created in an effort to pursue implementation of an integrated strategy for long-term flood damage reduction and aquatic species restoration in the Chehalis River Basin. This group is spearheading the Chehalis Basin Strategy

Chehalis Basin Flood Authority - The Flood Authority was created in 2008 and is a cooperative organization consisting of Lewis, Grays Harbor, and Thurston Counties; the cities of  Centralia, Chehalis, Aberdeen, Montesano; and the towns of  Pe Ell and Bucoda; and the Confederated Tribes of the Chehalis Reservation. The flood authority has many functions, including managing local flood control projects, implementing a river gage strategy, emergency flood warning system, and community outreach and education.  

Chehalis Basin Flood Control Zone District Advisory Committee - A committee of 11 Chehalis Basin residents was formed in July 2017 to advise the District Board of Supervisors on items that will affect the interests and future of residents in the Chehalis Basin. The committee provides non-biding advice to the Board of Supervisors on questions addressed to it by the District Board of Supervisors or the District Administrator. 

United States Army Corp of Engineers (USACE) - USACE is responsible for evaluating permit applications for projects, such as the Water Retention Facility, as required by the National Environmental Policy Act (NEPA). They are in the role of reviewer, and as a result, they not a proponent or opponent of any project.  

Washington State Department of Ecology (WADOE) - WADOE has prepared a Programmatic Environmental Impact Statement (EIS) in accordance with the State Environmental Policy Act (SEPA) to evaluate alternatives to reduce flood damage and improve aquatic species habitat. One of the alternatives considered in the EIS is a flood retention facility. WADOE will continue to be the lead agency in preparing the Project EIS for the proposed flood retention facility, which is the next step in the permitting process.