1958 Map of Mexican Pass SE

About this map

The Wind River Indian Reservation occupies the northern portion of this landscape, marking a boundary between tribal lands and the managed water systems of central Wyoming. This mid-century survey documents a highly engineered environment where the Riverton Reclamation Withdrawal Area dominates the terrain, facilitated by the Wyoming Canal and its associated drains. These irrigation systems fundamentally reshaped the hydrology around Sand Mesa, supporting a network of artificial water bodies including Middle Reservoir and Lake Cameahwait. The transition from arid desert to managed wildlife habitats is evidenced by the State Wildlife Management Area segments along Muddy Creek. Near the eastern edge, the rise of the Boysen Reservoir and the establishment of Boysen State Park illustrate the era's focus on large-scale water storage and recreation, while an isolated Oil Well to the north points toward the region's mineral interests.