2017 Map of Lewis Reservoir

About this map

Fort Peck Lake defines the eastern edge of this landscape in Valley County, Montana, where the prairie breaks into a complex system of ridges and coulees. The high ground is marked by features such as Second Ridge and Third Ridge, which overlook a network of seasonal drainages and human-made water catchments. These reservoirs, including Willow-Flat Reservoir, Lewis Reservoir, and the curiously named Lost McMehoney Reservoir, suggest a landscape managed for livestock and water conservation in an arid environment. Transportation through this remote terrain is limited to rugged routes like The Pines Rd and Willow Creek Rd, which navigate between prominent landforms like Bomber Coulee and Fifth Ridge. The transition from the high plateau down toward the massive reservoir at the east illustrates the typical topography of the Missouri River breaks region.