2024 Map of Triple Crossing Reservoir West

About this map

Middle Fork Lone Tree Creek and its southern counterpart, the South Fork Lone Tree Creek, define the drainage patterns of this Valley County landscape. The area is characterized by a series of high-prairie reservoirs, including the Ruins Reservoir and Finn Reservoir, which suggest the critical importance of water management for livestock and agriculture in this semi-arid region. These artificial water bodies are connected by a sparse network of gravel roads such as Stonehouse Rd and the Triple Cross Access Rd. The topographic detail reveals a complex system of coulees, notably Long Coulee and Tony Coulee, which channel seasonal runoff toward larger systems like Willow Creek. This 2024 U.S. Geological Survey data provides a contemporary look at the rural infrastructure of the Montana plains, where named landmarks often center on these essential water sources and the grazing lands they support.