Download PDF Ervay Basin SW (WY) USGS topo maps. These are full-sheet 7.5 Minute (1:24,000 scale) topographic maps. The red outline on the map below identifies the boundaries of the Ervay Basin SW topo map.
Ervay Basin SW topo maps are provided as PDF files.
Note: The most current map is the 2021 Ervay Basin SW topographic map.