6th Street Dam on Grand River during winter

Water flows over the 6th Street Dam as logs and debris accumulate in winter conditions on the Grand River in Grand Rapids, Michigan, April 22, 2026. The U.S. Army Corps of Engineers, Detroit District, is preparing an Environmental Impact Statement to evaluate removal of the aging dam and construction of a new sea lamprey barrier to address public safety concerns and restore more natural riverine conditions. (U.S. Army photo)