Congress authorized the project initially in 2007. After years of discussions and scoping meetings, the Flood Control District began to prepare a Feasibility Study and Environmental Impact Statement (FS/EIS) in 2013. In 2016, the Draft FS/EIS was completed and thus began the multi-stage evaluation process by the U.S. Corps of Engineers. The Agency Technical Review, which lasted roughly one year, included Corps experts from around the country reviewing each part of the FS/EIS to ensure that the studies and assessments of flood control benefits and environmental impacts were valid.

The second phase of the review included an Independent External Peer Review conducted by the Battelle Institute. They too reviewed every part of the FS/EIS to ensure that the Flood Control District adequately analyzed and mitigated against all impacts.

Ten (10) federal and state regulatory agencies, including the U.S. Army Corps of Engineers, U.S. EPA, Mississippi Department of Environmental Quality, U.S. Fish & Wildlife Service, and the Mississippi Department of Archives and History have been providing, and will continue to provide, comments on the project prior to final approval.

After all of these reviews and additional study by the Corps of Engineers headquarters staff, the project will be assessed by the Assistant Secretary of the Army for Civil Works at the Corps of Engineers in Washington, DC who has authority to provide final approval.