Heron Reservoir in New Mexico was created in 1971 and is located in the San Juan Mountains. It is a man-made lake that was built to provide water for irrigation, municipal use, and recreation. The reservoir is fed by several streams and rivers, including the Rio Chama and Willow Creek, which are important sources of surface flow. The area also receives significant snowpack that contributes to the reservoir's water supply. The reservoir is managed by the Bureau of Reclamation and is used for recreational activities such as fishing, boating, and camping. Additionally, the reservoir provides water to irrigate farmland in the surrounding area, particularly for alfalfa and hay production.