 Eagle Creek and Waumandee Creek flow into Fountain City Bay northwest of the city limits.Eagle Creek flows around the base of Eagle Bluff, one of the tallest bluffs along the Mississippi.The steep bluffs are characteristic of the Driftless Area of Wisconsin, Minnesota, and Iowa, a region that was not smoothed over by glacier like much of the rest of the Midwest, but rather deeply cut by runoff from the rapidly melting glaciers.