MISSISSIPPI RIVER – Pool #4, Everts Resort Pool 4 extends from Lock & Dam 4 located near Alma, Wisconsin upstream to Lock & Dam 3 located near Hager City, Wisconsin. Unlike the Lower Mississippi, much of the upper river is a series of pools created by a system of 29 locks and dams. The structures were authorized by Congress in … Continue reading MISSISSIPPI RIVER – Pool #4, Everts Resort #aerialphotography” →