The U.S. Army Corps of Engineers and the Washington Department of Fish and Wildlife have partnered on an ecosystem restoration feasibility study along the Lower Yakima River in Richland, Washington. This project is being conducted under the Continuing Authorities Program, Section 1135.

The purpose of this project is to restore ecosystem structure, function, and processes necessary for fish migration (particularly juvenile salmonids) that was degraded or lost following the construction and continuous operation of McNary Lock and Dam and the Tri-Cities Levees. The project goal is to restore riparian and aquatic habitat and ecosystem functions for the benefit of Endangered Species Act-listed salmonids, other fish, birds, and wildlife in the study area at the Yakima River Delta and, where possible, provide education and recreation access. 

USACE conducted the public review from January 30 to April 10, 2023. All comments have been addressed and incorporated into the final report. Links to the final feasibility report and integrated environmental assessment, appendices, and signed Finding of No Significant Impact (FONSI), are at the right-hand side of this page.

The next phase will be Design and Implementation, with anticipated co-sponsorship of Washington Department of Fish and Wildlife along with Yakama Nation.

For general questions, call the Walla Walla District at 509-527-7020.