Upper Midwest Environmental Sciences Center
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Quadrangle IndexesNames and codes associated with USGS quadrangles
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These data sets were created to provide users with (1) the approximate boundaries of USGS quadrangles and (2) the names and indexing codes associated with each quadrangle.
Quadrangle Indexes
Note: Quadrangle boundaries are approximate. All files are stored in decimal degree coordinates, North American Datum 1927 (NAD27).
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Page Last Modified: April 3, 2018