2012 Map of Somerville Flats West

About this map

The Powder River meanders through this landscape in Johnson County, Wyoming, carving a distinct path through a region defined by high plains drainage systems. This 2012 survey illustrates a remote ranching and resource-rich environment where natural water management is critical, evidenced by the Raper Draw Reservoir and numerous ephemeral watercourses. Several prominent drainage features including Deer Gulch, Coal Gulch, and North Fork Coal Gulch point to the area's geological character and perhaps its history of small-scale mineral exploration. Access across this expanse is primarily served by unpaved routes such as Upper Powder River Rd and Dry Creek Rd, which link the various draws and creek beds. These watercourses, including Flying E Cr and Barber Cr, form a complex network that ultimately feeds into the Powder River valley.