sentences:  Heron Lake (New Mexico)
  
  Heron Lake is a reservoir in Rio Arriba County, in northern New Mexico in the southwestern United States.The lake is part of the San Juan-Chama Project, which transfers water from the upper reaches of the San Juan River through the Azotea Tunnel (and under the Continental Divide), into Willow Creek and the Rio Chama (and ultimately into the Rio Grande).