Davis Dam is a zoned earth-fill dam with a concrete spillway, 1,600 ft (490 m) in length at the crest, and 200 ft (61 m) high. The earth fill dam begins on the Nevada side, but it does not extend to the Arizona side on the east. Instead, there is an inlet formed by earth and concrete, that includes the spillway. The hydroelectric power plant is beside the inlet.
The dam's purpose is to re-regulate releases from Hoover Dam upstream, and facilitate the delivery of Colorado River water to Mexico. Bullhead City, Arizona, and Laughlin, Nevada, are located just below the dam along the river. Davis Camp is also nearby. Bullhead City was originally a construction town for workers building the dam.
A road is located on the crest of the earth fill portion of the dam and a bridge spans the inlet. It was formerly part of Arizona State Route 68 to Nevada. The road was rerouted south of the dam, via a new bridge across the Colorado River in 2004, allowing increased security for the dam and more highway traffic lanes. Barriers have been placed on the former road at each end of the dam, stopping private vehicles, but allowing the public to walk across dam.