2012 Map of Ervay Basin SW

About this map

Black Mountain anchors the southern portion of this high-plains landscape in Natrona County, where the drainages of Middle Fork Sage Hen Cr and E Fork Sage Hen Cr converge near Boyle Reservoir. The region is defined by remote homesteading and ranching infrastructure, such as the Holiday Homestead and the Strawhaker Corral. Water sources like McKenzie Spring and Little Cross L Spring provide critical points of interest in a dry environment dominated by topographic landmarks like the Deer Creek- Dry Creek Divide and the French Rocks. The northern reach of the map shows early 21st-century access via Gas Hills Rd and the Gas Hills Airstrip, highlighting the area's continued use for specialized transportation and livestock operations.