2024 Map of Big Hill

About this map

The Yellowstone River cuts through the southern reaches of this Custer County landscape, defining the local hydrology and transport network. This 2024 survey captures the rural character of the region, where a complex system of drainage basins—including South Sunday Creek, North Sunday Creek, and Cotton Creek—carves through the high plains. The topography is anchored by the prominent Big Hill in the north, while the lower elevations near the river support critical infrastructure such as Frank Wiley Field. The land is meticulously gridded by township and range boundaries, reflecting the enduring influence of the Public Land Survey System. Local movement is facilitated by rural arteries like Ft Keough Rd and S Sunday Creek Rd, which follow the contours of the coulees and creek beds to connect isolated rangelands.