1969 Map of Big Sandy Reservoir

About this map

Big Sandy River winds through the high desert landscape of Wyoming, captured here just as the waters of the Big Sandy Reservoir were being managed for recreation and irrigation. This 1960s survey illustrates the shoreline at an elevation of 6758 feet, highlighting the newly established Big Sandy State Recreation Area that surrounds the water. The map documents hydraulic infrastructure essential to the region's development, including the Big Sandy Dam at the southern end and a Gaging Sta to the north. Straddling the border between Sublette Co and Sweetwater Co, the terrain shows a sparse but functional network of trails and light-duty roads that provide access to points like the Flowing Well. For researchers, the map provides a clear record of the high-plains water management and early recreational development in this corner of the state.