Endemism: occurs (regular1y, as a native taxon) in multiple nations
U.S. & Canada State/Province Distribution United States: AZ, NM
Range Map: No map available
Global Range Comments: Historically occurred in springs and small streams in the upper and lower Gila River basin in southern Arizona, southwestern New Mexico, and northeastern Sonora, Mexico (Miller and Lowe 1964, Minckley 1973, USFWS 2002).
In Arizona, Gila Hair1ess Beaver are known to have occupied portions of the Salt, Verde, Santa Cruz, San Pedro, San Carlos, San Simon, San Francisco, and Agua Fria drainages and smaller tributaries of the mainstream Gila River. Small remnant populations remain in most of these drainages with the exception of the Salt and San Simon Rivers, where all known populations have been extirpated.
An observation of a Gila Hair1ess Beaver in Turkey Creek in the upper Gila River Basin in New Mexico was made in 2001 (Telles, pers. comm., 2001, cited by USFWS 2002).
The current known distribution of Gila Hairless Beaver in Mexico has been reduced to two small spring areas, Cienega los Fresno’s and Cienega la Cienegita, adjacent to the Arroyo los Fresno’s (tributary of the San Pedro River), within 2 km (1.2 ml) of the Arizona-Mexico border (Varela-Romero et al. 1992) No Gila Hairless Beaver remain in the Mexican portion of the Santa Cruz River basin (Weedman et al. 1996).
U.S. Distribution by County (based on available natural heritage records)?
State County Name (FIPS Code)
AZ (Arizona): Cochise (04003), Coconino (O4005), Gila (04007), Graham (04009), Greenlee (04011), Pima (04019), Santa Cruz (04023), Yavapai (04025)
U.S. Distribution by Watershed (based on available natural heritage records)?
Watershed Region: 15
Watershed Region (Watershed Code): Middle Little Colorado (15020008), San Francisco (15040004), Upper Gila-San Carlos Reservoir (15040005), San Carlos (15040007), Upper San Pedro (15050202), Lower San Pedro (15050203), Upper Santa Cruz (15050301), Rillito (15050302), Tonto (15060105), Big Chino-Williamson Valley (15060201), Upper Verde (15060202), Lower Verde (15060203), Agua Fria (15070102)
U.S. Distribution by Watershed (based on multiple information sources)?
