The U.S. Army Corps of Engineers, St. Paul District, is seeking comments on a Clean Water Act evaluation to make repairs at Lock and Dam 1 in Minneapolis. The Corps is developing plans to repair scouring immediately downstream of the dam. The plan includes placing more than 14,000 cubic yards of rock along the entire width of the dam and up to 150 feet downstream. In all, an estimated three acres south of the dam will be impacted by the project.