Rincon Arroyo is a tributary stream or arroyo to the Rio Grande, in Doña Ana County, New Mexico. Its mouth is located at an elevation of 4,029 feet (1,228 meters) at its confluence with the Rio Grande in Rincon Valley. Its source is located at an elevation of 4,600 feet (1,400 meters) on the south slope of the hills of the Point of Rocks at 32°47′49″N 106°59′28″W / 32.79694°N 106.99111°W in Sierra County, New Mexico.[1]