sentences: "Southeastern Minnesota" is separated from Southwestern Minnesota by the "Owatonna Moraine", the eastern branch of the Bemis Moraine, a terminal moraine of the Des Moines lobe from the last Wisconsin glaciation.Ojakangas and Matsch extend the region west past the moraine to a line running north from the Iowa border between Mankato and New Ulm to the latitude of the Twin Cities, then encompassing the latter metropolis with a broad arc east to the St. Croix River.