2020 Map of Split Rock Lake

About this map

Split Rock Lake and the engineered water systems of the Pishkun Canal dominate this high-plains landscape along the border of Teton and Lewis and Clark Counties. The topography is defined by significant drainage and irrigation features, including the Sun River which flows across the southern portion of the map. Local geography is marked by distinct landforms such as the Black Reef and Long Ridge, while the hydrological network is further supported by Tunnel Lake and the winding course of Deep Creek. The presence of several coulees, including Oxheart Coulee and Arnold Coulee, indicates a complex natural erosion pattern across the terrain. This modern survey reflects the contemporary water management infrastructure and road network, including Pishkun Road and Deep Creek Road, that supports the ranching and agricultural operations in this region of Montana.