The species is endemic to Socorro County, New Mexico in the United States, where only one population is known. It was placed on the federal endangered species list along with the Socorro springsnail in 1991.
The snail occurs in five small connected springs within half a mile of each other; this is thought to be a single population. The snail was discovered in 1979 and described to science as a new species in 1987.
- United States Fish and Wildlife Service (August) 1994. Socorro and Alamosa Sprinsnail recovery plan. New Mexico Ecological Services State Office, Albuquerque, New Mexico. 24 pp.
- USFWS. Final rule to list the Alamosa Springsnail and the Socorro Springsnail as endangered. September 30, 1991.
- Mollusc Specialist Group 2000. Tryonia alamosae. 2006 IUCN Red List of Threatened Species. Downloaded on 3 February 2011.
- Species profile at U. S. Fish and Wildlife Service
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