Home > Locations > District Locks and Dams > Mill Creek Dam and Bennington Lake > Mill Creek SEIS

Mill Creek Project O&M SEIS

Collapse All Expand All

The U.S. Army Corps of Engineers - Walla Walla District (Corps) invites public comments on the draft Mill Creek Flood Control Project Operations and Maintenance Supplemental Environmental Impact Statement (SEIS). The draft SEIS 46-day comment period officially starts June 8, 2018, (the expected date of publication in the Federal Register) and will remain open through July 23, 2018.

The Corps’ draft SEIS and appendices are available below under “Links" on this webpage, along with the Corps' Notice of Intent in the Federal Register, Mill Creek Project’s 1975 FEIS and topic-related fact sheets.

The Corps is preparing this SEIS to update the National Environmental Policy Act compliance for operations and maintenance of the Mill Creek Project because changes in required operations and maintenance activities and new environmental conditions within the project area have occurred since the original 1975 Environmental Impact Statement. The Corps proposes to operate and maintain the Mill Creek Project in accordance with its authorized purposes of flood risk management and recreation, while minimizing impacts to the environment, in particular impacts to Endangered Species Act protected fish and associated critical habitats. A public scoping period was conducted May 12 through June 12, 2017, including a public meeting held May 24, 2017, in Walla Walla, Washington. All information and comments submitted during the scoping period were considered in the development of the draft SEIS and included in the permanent public record.

The SEIS will supplement the June 1975, Mill Creek Project, Walla Walla, Washington, Final Environmental Impact Statement (FEIS), prepared by the Corps for the operation, maintenance, and improvement of the federally managed portion of the Project. The SEIS will identify and evaluate current O&M actions that may not have been adequately addressed in the 1975 FEIS or have been implemented since completion of the 1975 FEIS, and actions that are proposed for the future. It will also identify and evaluate operational and structural measures the Corps has proposed to improve fish passage through the Mill Creek Project.

Comments on the draft SEIS can be submitted online at: www.nww.usace.army.mil/Missions/Environmental-Compliance/, emailed to: NEPANWW@usace.army.mil, or mailed to:

U.S. Army Corps of Engineers
Walla Walla District
201 N. 3rd Avenue
Walla Walla, WA 99362

Comments must be posted online, emailed, or postmarked no later than July 23, 2018, to be considered. All comments received will be included in the permanent public record.

Mill Creek SEIS Comment Form Instructions

Please fill out the form below. The Corps invites comments from the public regarding The Corps invites Federal, state, and local agencies, affected Native American tribes, and other interested organizations and people to participate in the development of the SEIS. The Corps invites interested parties to provide specific comments on issues and alternatives the Corps should evaluate in the SEIS related to the continued O&M of the Mill Creek Project. ***Please note, all comments will be part of the permanent record.

Mill Creek Project O&M SEIS Comment Form


Contact us

Environmental Compliance
201 N. 3rd Ave.
Walla Walla, WA 99362