Keywords: HUC0402.jpg en Map of HUC0402 - Southern Lake Superior-Lake Superior sub-region in the Great Lakes Water Resource Region 2016-10-13 http //water usgs gov/wsc/sub/0402 jpg USGS other versions PD-USGov Geography of the United States Hydrology in the United States United States Geological Survey maps Basins of the United States Hydrologic Unit Code maps of the United States |