Alamosa Creek

Alamosa Creek, also known as Alamosa Arroyo and Alamosa River, is a tributary stream of the Rio Grande in Socorro and Sierra County, New Mexico. Alamosa Creek has its source at 33°49′13″N 107°38′43″W at an elevation of 7600 ft / 2,316 meters on the western slope of the San Mateo Mountains in Soccoro. Its mouth was originally at its confluence with the Rio Grande, before that river was flooded by the Elephant Butte Reservoir created by the Elephant Butte Dam. Its mouth is now on the western edge of that reservoir at the mouth of Monticello Canyon.

Alamosa Creek
Location of mouth
Location
Country	United States
State	New Mexico
Counties	Socorro, Sierra
Physical characteristics
Source
• coordinates	33°49′13″N 107°38′43″W
• elevation	7,600 ft (2,300 m)
Mouth
• location	Elephant Butte Reservoir
• coordinates	33°18′19″N 107°12′34″W
Basin features
River system	Rio Grande