, and
Abiquiu Dam The Rio Chama originates in south-central Colorado, just above the New Mexico border in the
San Juan Mountains and
Rio Grande National Forest. The
main stem Rio Chama begins at the confluence of two short headwater tributaries called
West Fork and
East Fork. The West Fork flows eastward from the
Continental Divide. Across the divide lies the
Navajo River, one of the headwater tributaries of the
Colorado River. The East Fork extends a few miles into
Conejos County, Colorado to a source near one of the headwater tributaries of the
Conejos River. The confluence of the forks lies just within
Archuleta County, Colorado. From there the Rio Chama flows generally south. After a few miles the river enters Rio Arriba County, New Mexico, and flows by the town of
Chama. The tributary Willow Creek joins the Rio Chama after being impounded as
Heron Lake by
Heron Dam. Willow Creek flows from the dam about to the Rio Chama. A couple miles below that the Rio Chama flows into
El Vado Lake, a reservoir created by
El Vado Dam. From El Vado Dam the Rio Chama continues flowing south, entering Chama Canyon and
Santa Fe National Forest and the
Chama River Canyon Wilderness. It is joined by Rio Cebolla from the east, then
Rio Gallina from the west. Then the river enters
Abiquiu Lake, the reservoir created by
Abiquiu Dam. The tributary
Rio Puerco joins the Rio Chama in Abiquiu Lake. crossing. Below Abiquiu Dam the Rio Chama flows generally east, skirting the edge of
Carson National Forest. It flows by the town of
Abiquiú, located at the mouth of Abiquiu Creek, after which it turns to flow generally southeast. Near the villages of Chili and La Chuachia the Rio Chama is joined by two of its primary tributaries. The
Rio del Oso joins from the west then, within less than a mile, the
Rio Ojo Caliente joins from the northeast. From there the Rio Chama flows several miles southeast to join the Rio Grande near
Ohkay Owingeh, about north of the city of
Española and approximately north of
Santa Fe. ==History==