2011 Map of Gustin Coulee

About this map

Gustin Coulee defines the drainage pattern of this high plains landscape along the Montana-Saskatchewan border in Phillips County. The area is characterized by a sophisticated water management network designed to capture runoff in a semi-arid environment. Named catchments such as Titan Reservoir, Ada Reservoir, and the uniquely titled French Fry Number 2 Dam are scattered across the terrain, connected by intermittent stream beds and local access roads. This 2011 survey reveals how the local ranching and agricultural economy depends on these artificial water bodies, including Pea Lake and Split Rock Dam, which serve as critical infrastructure in a region otherwise sparse in permanent natural water sources.