2011 Map of McMullen Basin

About this map

McMullen Basin Spring and numerous other water sources define this high-desert ranching landscape in southern Twin Falls County. The 2011 survey reveals a complex network of seasonal water management, featuring names like Upper Burnt Creek Reservoir, Dry Fork Reservoir, and Williams Reservoir, which is held by Williams Dam. The reliance on these catchments and natural outlets like Moonshine Spring, Rim Rock Spring, and Squaw Joe Spring suggests a territory where livestock grazing and water rights are central to the local economy. Beyond the basins, the terrain is marked by prominent drainage systems including McMullen Creek and North Cottonwood Creek. Access to these remote areas is maintained via established routes such as Hoppers Gulch Rd and Cottonwood Creek Rd, which provide passage through the North Cottonwood Ridge.