Abiquiu Lake is a reservoir located in Rio Arriba County, in northern New Mexico in the southwestern United States. Water of the Rio Chama is impounded by the earth-filled Abiquiu Dam, 1800 feet (550 m) long and 340 feet (104 m) high, completed in 1963 and raised in 1986. The 5200-acre lake is over 12 miles (20 km) long, and lies at elevations of up to 6100 feet (1860 m).