Thunder Basin National Grassland dominates the western portion of this Weston County terrain, where the high plains transition into a complex network of intermittent drainages and draws. The landscape is defined by the hydrologic patterns of Beaver Creek, Oil Creek, and their tributaries, including S Beaver Creek, Mush Creek, and Rough Creek. These waterways, often dry beds reflecting the arid environment of eastern Wyoming, carve a distinctive topography that has long influenced land use and movement in the region.
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1899 · Newcastle
USGS Topo · 1:125,000
1901 · Newcastle
USGS Topo · 1:125,000
1951 · Owens
USGS Topo · 1:24,000
1951 · Dewey SW
USGS Topo · 1:24,000
1951 · Newcastle
USGS Topo · 1:24,000
1951 · Morrisey NE
USGS Topo · 1:24,000
1951 · Osage SE
USGS Topo · 1:24,000
1955 · Newcastle
USGS Topo · 1:250,000
1958 · Newcastle
USGS Topo · 1:250,000
1958 · Newcastle
USGS Topo · 1:62,500