2014 Map of Collins Reservoir

About this map

Collins Reservoir and a high density of small water catchment systems define this section of Valley County, Montana. The landscape is carved by a network of drainage channels such as Pearson Coulee and White Rock Coulee, which feed into larger arteries like Willow Creek. This map reveals a specific ranching or land-management strategy of the early 21st century, where dozens of named reservoirs—including Your Name Reservoir, Lush Reservoir, and Three Trees Reservoir—are distributed across the townships of T26N R37E and T25N R37E. The terrain transition is marked by features like Roosevelt Coulee and Corral Coulee, illustrating the complex local topography used for water retention in this arid region.