Heron Lake is a reservoir in Rio Arriba County, New Mexico in the southwestern United States.

Heron Dam is owned and operated by the United States Bureau of Reclamation.

The southern shore is the location of Heron Lake State Park, featuring over 200 camping and picnic sites, and two improved boat ramps.

A 5.5-mile (8.9 km) hiking trail crosses the Rio Chama Gorge via a pedestrian suspension bridge, and then runs southwest through wooded terrain to the grounds of El Vado Lake State Park.

[2] The lake, dam, and state park are named for Kenneth A. Heron, an engineer in the early 1900s who first explored the concept of diverting water from Colorado to the desert regions of southern New Mexico.