2011 Map of Lewis Reservoir

About this map

Fort Peck Lake dominates the eastern landscape of this Valley County region, where the prairie topography is defined by an extensive network of water management features. The map reveals a land engineered for ranching and water storage, characterized by numerous small impoundments such as Lewis Reservoir, Duck Creek Reservoir, and Willow Creek Flat Reservoir. These landmarks, often bearing local names like Lost McMenomey and Berger Reservoir, indicate the critical role of surface water in this arid environment. The terrain is marked by seasonal drainages and coulees, including Wilderness Coulee and Third Coulee, which channel runoff toward the major lake. Transportation is limited to a few arterial tracks, notably Willow Creek Rd and Ridge Rd, which navigate the high ground between these varied catchments and the rugged shoreline of the Missouri River's reservoir system.