Bowman-Haley Dam, Embankment dam in Bowman County, United States.

Bowman-Haley Dam is a 79-foot-high, 5,730-foot-long earthen embankment dam on the North Fork of the Grand River, 2 miles north of the South Dakota border. Its reservoir, Bowman-Haley Lake, covers 2.7 square miles at normal pool. The dam is owned and operated by the U.S. Army Corps of Engineers.

Construction of the earthen embankment began in June 1964 and was finished in 1966, carried out by the United States Army Corps of Engineers. The structure dams the North Fork Grand River to form Bowman-Haley Lake, about 20 km southeast of the town of Bowman. It serves flood protection and water supply.

The lake and its shoreline are managed by the U.S. Army Corps of Engineers for recreation as well as flood control, so fishing, boating and camping take place alongside the dam's water-supply role. The reservoir was authorized for fish and wildlife preservation, which is why anglers use it year-round.

Visit during warmer months when water levels and weather conditions are most favorable for boating and camping activities. Conditions can vary significantly depending on the season and water management needs.

At its normal pool the lake covers about 7.3 km² and holds roughly 25 million m³, while the flood-control capacity reaches 171,838 acre-feet (about 212 million m³). The gap between the two figures shows how much floodwater the reservoir can absorb. The dam stands 2 miles north of the South Dakota border, about 20 km southeast of Bowman.