2011 Map of West Alkali Reservoir

About this map

West Alkali Creek and its complex system of agricultural water management define this landscape in north-central Montana. The map reveals an intricate network of coulees and earthen dams designed to capture runoff in a semi-arid environment, with named structures like the W B Black Dam, Mitchell One Dam, and Halvor Number 1 Dam indicating local family or ranching history. US Route 191 bisects the terrain, providing the primary corridor through this ranchland. Significant catchments including West Alkali Reservoir, Williams Coulee Reservoir, and the uniquely titled Reservoir Number One Hundred Sixty-one demonstrate the vital importance of water storage for the local economy. The drainage patterns of Threemile Coulee and Fourmile Coulee suggest a topographic rhythm that has dictated land use and road placement for generations.