1966 Map of Monument Lake

About this map

Monument Lake sits at the center of this 1960s topographic study of Sweetwater County, Wyoming. The landscape is defined by the high-desert terrain of the Great Divide Basin, where early water management is evidenced by the Fivemile Ditch running through the southern sections. This survey provides a record of human presence in a sparse region, documenting remote ranching outposts such as Larsens Ranch and the Hadsell Place. Evidence of subsurface exploration is scattered throughout the area, marked by a Drill Hole in the northeast and several Well locations. These features suggest the early stages of resource assessment and the persistent effort to secure water in this arid Wyoming territory.