Environmental Review

Chehalis River Basin Flood Damage Reduction Project

Chehalis River Basin Flood Damage Reduction Project

To reduce flood damage in the Chehalis River Basin, the Chehalis River Basin Flood Control Zone District (FCZD) is proposing to construct 1) a new flood retention facility and temporary reservoir near the town of Pe Ell, Washington, and 2) levee improvements around the Chehalis-Centralia Airport in Chehalis, Washington. The Washington Department of Ecology (Ecology) and U.S. Army Corps of Engineers (USACE) have determined the proposal could have significant adverse environmental impacts and will require formal studies  through separate state and federal Environmental Impact Statement (EIS) processes.

For More Information

Contact Us

Environmental Contacts

  • Diane Butorac, Ecology EIS Project Manager
    ph: (360) 407-6573
  • Bob Thomas, USACE EIS Project Manager
    ph: (206) 764-3480


Environmental Review Process

Ecology will release the draft state environmental review on February 27, 2020 for public comment and review. The report analyzed potential impacts to the environment from the proposal under the State Environmental Policy Act (SEPA). Visit the SEPA Process page for more information on how to comment and public hearings.

USACE, representing the federal government, is conducting a separate, but synchronized review as required by the National Environmental Policy Act (NEPA). Visit the NEPA Process page for more information.

Ecology and USACE held a 31-day EIS scoping period from September 28 through October 29, 2018. Visit the EIS Scoping page for more information on the scoping process and to view scoping materials.

Both EIS documents will provide a comprehensive and objective environmental review. This analysis is necessary before an agency can act on any permit related to the Chehalis River Basin Flood Control Zone District’s proposal.

Equal Access

To ensure equal access to materials, Ecology and USACE will provide auxiliary aids/services to persons with disabilities. Please call (206) 219-5900 with any requests. Persons with hearing loss and speech disability can contact 711 for the Washington Relay Service. Persons with a speech disability may call TTY at (877) 833-6341. All meeting-related requests must be received 72 hours in advance.

En Español

El Departmento de Ecología y el Cuerpo de Ingenieros del Ejército de los Estados Unidos están conduciendo los estudios de los impactos ambientales para un proyecto propuesto para una presa de retención de inundaciones cerca de Pe Ell, Washington y mejoras en el dique del Aeropuerto de Chehalis-Centralia en el condado de Lewis para la reducción de daños por inundación. Para más información, favor de contactar a (206) 219-5900.