Select a USGS quadrangle name from the list or click on the map to zoom to a quadrangle.

Select Quadrangle

Next, click inside a dashed outline to view a list of available files to download.
   
   
   
   
 
   
   
   
Full extent
NW
N
NE
W
The Map
E
SW
S
SE

Copyright 2005, Indiana University
University Information Technology Services
Last updated: December 2, 2005
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