The relict leopard frog is a minor success story. The species was long thought to be extinct or near extinction, although surviving populations have been found. They exist in isolated springs and creeks in desert environments, near reservoirs and recreation sites in an area that has been rapidly urbanized. Accordingly, the species must be considered to be highly vulnerable.
The relict leopard frog was found in creeks, springs, and seeps in the vicinity of the Las Vegas Valley, Clark County, Nevada, and the Virgin River Valley, Washington County, Utah, at elevations between 370 meters and 760 meters. Many of these populations are now extinct. Recent field work has discovered a few small populations in extreme northwestern Arizona along the Virgin River, from near Littlefield downstream to the Overton Arm of Lake Mead. New populations have been discovered in springs that enter the Colorado River in Black Canyon, south of Hoover Dam in Nevada/Arizona.