1964 Map of Shell Reservoir

About this map

Big Horn National Forest encompasses the high-altitude terrain of this mid-1960s survey, where the boundary between Sheridan and Big Horn counties cuts across the high peaks and plateaus. The hydrological significance of the area is centered on the namesake Shell Reservoir and the nearby Adelaide Lake, which collect snowmelt from the surrounding summits. The landscape is defined by its glacial history, evidenced by the prominent Moraine feature and the numerous glacial lakes like Calvin Lake and Lake Arden scattered throughout the basins.