Brantley Lake is a reservoir on the Pecos River located within Brantley Lake State Park^[2] (32.545115°N 104.374403°W / 32.545115; -104.374403) approximately 12 miles (19 km) north of Carlsbad, New Mexico off US 285.

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Brantley Lake
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Location	Eddy County, New Mexico
Coordinates	32.57618°N 104.38866°W / 32.57618; -104.38866[1]
Type	Irrigation Reservoir
Primary inflows	Pecos River
Primary outflows	Pecos River
Basin countries	United States
Surface area	4,000 acres (16 km2)
Water volume	335,054 acre⋅ft (413,283,000 m3)
Surface elevation	3,300 ft (1,000 m)

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It is impounded by Brantley Dam, completed in the 1980s as part of the Brantley Project of the United States Bureau of Reclamation. The project's main purpose was to replace the old McMillan Dam, which had been declared unsafe. Additional benefits include irrigation, flood control, fish and wildlife enhancement, and recreation.

Brantley Lake has a 335,054 acre-feet (413,283,000 m³) capacity assigned to flood control functions.

Brantley Lake State Park is located in the Chihuahuan Desert region of southeastern New Mexico.

Anglers can catch a variety of warm water fish such as largemouth bass, walleye, channel catfish, white bass, bluegill, and crappie.

Brantley Lake is part of the larger Brantley Wildlife area that stretches approximately 11 miles (18 km) North-South in south eastern New Mexico.