1985 Map of Nolan Reservoir

About this map

Leroy serves as the primary point of settlement on this high plains landscape in southern Blaine County, where the topography is defined by the drainage systems of the Milk River basin. The geography is marked by a series of coulees and branches, including the curiously named Coal Mine Coulee and Christenson Branch, which cut through the level terrain of Lone Tree Bench. In an area where water is a critical resource, Nolan Reservoir and Bear Paw Springs stand out as vital landmarks for local ranching operations. The presence of Lion Butte and the surrounding Lion Coulee indicates a shift toward more broken country in the southern portion of the quadrangle. This 1985 provisional survey captures the transition between open range and the specialized water management features necessary for sustaining life in this part of Montana.