USGS Quad Index
Description
An overlay of USGS 24k quadrangle boundaries, as sourced from the U.S. Geological Survey. Use this layer atop any map in Gaia GPS to determine the name and state of the USGS quad you're in. You can find a digitized quilt of all USGS quads in the USGS Topo map layer.
Attribution
© USGS, Gaia GPS
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