FILE - This Aug. 2, 2018, file photo shows the Old River Control Structure, a floodgate system which regulates the flow of water leaving the Mississippi River into the Atchafalaya River, in Vidalia, La. The state of Mississippi is suing the federal government for at least $25 million, claiming a federal dam complex in Louisiana that keeps the Mississippi River from changing course is harming state land. The suit was filed Monday in the Court of Federal Claims by Mississippi officials on behalf of three school districts. (AP Photo/Gerald Herbert, File)
FILE - This Aug. 2, 2018, file photo shows the Old River Control Structure, a floodgate system which regulates the flow of water leaving the Mississippi River into the Atchafalaya River, in Vidalia, La. The state of Mississippi is suing the federal government for at least $25 million, claiming a federal dam complex in Louisiana that keeps the Mississippi River from changing course is harming state land. The suit was filed Monday in the Court of Federal Claims by Mississippi officials on behalf of three school districts. (AP Photo/Gerald Herbert, File) Gerald Herbert AP
FILE - This Aug. 2, 2018, file photo shows the Old River Control Structure, a floodgate system which regulates the flow of water leaving the Mississippi River into the Atchafalaya River, in Vidalia, La. The state of Mississippi is suing the federal government for at least $25 million, claiming a federal dam complex in Louisiana that keeps the Mississippi River from changing course is harming state land. The suit was filed Monday in the Court of Federal Claims by Mississippi officials on behalf of three school districts. (AP Photo/Gerald Herbert, File) Gerald Herbert AP