sentences: "Central Minnesota" is composed of (1) the drainage basin of the St. Croix River (2) the basin of the Mississippi River above its confluence with the Minnesota, (3) those parts of the Minnesota and Red River basins on the glacial uplands forming the divides of those two basins with that of the Mississippi, (4) the Owatonna Moraine atop a strip of land running from western Hennepin County south to the Iowa border, and (5) the upper valley of the Saint Louis River and the valley of its principal tributary the Cloquet River which once drained to the Mississippi before they were captured by stream piracy and their waters were redirected through the lower Saint Louis River to Lake Superior.