MINNEAPOLIS — The Army Corps, which manages U.S. navigable waters, is hosting an open house Saturday at Lock and Dam 1 on the Mississippi River in Minneapolis. Time: From 10 a.m. to 2 p.m. at 5000 West River Parkway in Minneapolis. The Corps plans water safety demonstrations with its boats. The dam itself is near antique status: Built in 1917 and reconstructed in 1929.
