Download PDF Grassy Lake Reservoir (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 Grassy Lake Reservoir topo map.
Grassy Lake Reservoir topo maps are provided as PDF files.
Note: The most current map is the 2021 Grassy Lake Reservoir topographic map.