2020 Map of Threemile Reservoir

About this map

Fort Belknap Agency serves as the focal point of this northern Montana landscape, situated south of the meandering Milk River. The map reveals a highly engineered water management system essential for the region's semi-arid plains, featuring the Milk River Canal A, Main Canal A, and the N Canal that divert and distribute water across the territory. South of the river, the terrain rises toward more varied topography where Threemile Cr and Spring Cr drain toward the basin. Genealogists and local historians will find the Sacred Heart Cem positioned near the convergence of regional routes and the upper reaches of Threemile Reservoir, providing a specific point of reference for family history within the Agency District. The inclusion of named local roads like Gardipee Rd and Tincher Rd provides a clear view of the modern infrastructure and land divisions defining this part of Blaine County.