Ocheydan

The Ocheyedan River rises in southwestern Minnesota and flows through the rolling country of northwestern Iowa. It joins the Little Sioux River, whose waters eventually reach the Missouri. Nearby, the Ocheyedan Mound rises above the surrounding prairie: despite its name, it is a natural hill rather than a mound built by human hands. The river valley and its floodplain form part of a landscape shaped by ancient glaciation and crossed by streams running south.