Horsehead Lake is a small U.S. Forest Service lake located in western Johnson County, Arkansas, at the juncture of the Boston Mountains and the Arkansas River Valley (Fig. 1). To reach the lake, take Arkansas 164 north from 1-40 (the Hunt-Coal Hill exit). From downtown Hunt, continue 2.8 mi (4.5 km) north on Arkansas 164 to the entrance to Horsehead Lake. Walk across the dam to the spillway cut.