EarthWorks Geospatial Catalog

United States--Great Lakes, Lake Superior--Minnesota, Grand Portage Bay, Minn. to Shesheeb Point, Ont. / Coast Survey.

"LORAN-C overprinted." Depths shown by isolines and soundings. Relief shown by contours, hachures and spot heights. Shipping list no.: 2005-0004-S. "Soundings in feet." Includes table of low water datum for Lake Superior.
U.S. Dept. of Commerce, National Oceanic and Atmospheric Administration, National Ocean Service, Coastal Survey ;
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