Arctic National Wildlife Refuge (ANWR)
Earth and Biological Science-Data Website
Source: USGS Digital Line Graph (DLG)
Digital vector data in ARC/INFO format depicting the elevation contours of the
Barter_Island_A5 1:63360 USGS topographic map.
Arc and polygon topology exist, and attribute data follow the USGS DLG standard.
A polygon attribute was added (MID-ELEV) that is the mean elevation based on
the lowest and highest elevations reported in the arc-attribute table for all
arcs that define the respective polygon. The original USGS DLG dataset was
last updated and published on (YEAR/Month): 198804.
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