Kofa National Wildlife Refuge

Established in 1939, Kofa Wildlife Refuge encompasses 665,400 acres of the Sonoran Desert. The refuge provides essential habitat for desert bighorn sheep, the California fan palm and other wildlife and plants.

Desert bighorn sheep are primarily found in the two mountain ranges that dominate the refuge landscape: the Kofa and Castle Dome Mountains. While these mountains are not especially high, they are extremely rugged and rise sharply from the surrounding land.