HARPERS FERRY, Iowa – The Army Corps, which maintains navigation on the Mississippi, plans to stabilize river banks at the Effigy Mounds National Monument to reduce damage to Native American burial and ceremonial mounds. The Corps asked for public comments by August 11 to help shape the project . The s project would be at the Sny Magill unit of the national monument. Prolonged high water has been an ongoing problem along Johnson’s Slough in the backup behind he Corps’ Lock and Dam 10 at Guttenberg. The project would improve aquatic and floodplain forest habitat, the Corps said.
