2020 Map of Wild Horse Reservoir

About this map

Wild Horse Reservoir serves as a central collection point for the drainage systems of northern Phillips County. This 2020 map documents the complex network of intermittent watercourses and land management boundaries in the high plains south of the Canadian border. The landscape is defined by its coulees—narrow, steep-walled drainage valleys—including Fourmile Coulee, Threemile Coulee, and Tressler Coulee. These features illustrate the natural erosional patterns that shape the regional terrain, feeding into larger systems like Wild Horse Cr and W Alkali Cr. The map provides a contemporary view of these remote ranchlands, showing how modern land surveys interact with longstanding topographical features like Spring Coulee and Tin Roof Coulee.