Brantley Lake State Park is a state park of New Mexico, United States, located approximately 12 miles (19 km) north of Carlsbad. The park takes its name from Brantley Lake, a man-made reservoir created when Brantley Dam was built across the Pecos River in the 1980s. The lake is the southernmost lake in New Mexico, and it is popular for boating and fishing. It has a surface area of approximately 4,000 acres (16 km2), but that varies due to the inconsistent flow of the Pecos River and the arid climate in which the lake is located. (Ref: https://en.wikipedia.org/wiki/Brantley_Lake_State_Park)