Kelley Reservoir is a man-made lake in the Pioneer Mountains. It found in the Rattlesnake Creek Drainage and is accessible by a USFS road in a 4X4 vehicle. Kelley Reservoir has a well defined inlet and a spillway dam on the outlet. A primitive boat launch is located on the southeast end of the lake and motorized boats are allowed on the lake. Kelley reservoir sees a lot of human traffic due to the ease of access.