DistributionRead full entry
Range DescriptionThis species is restricted to the Laramie Basin, Wyoming, USA. The historical range extent was approximately 2,330km² (USFWS data). As of 2002, it was extant only at Mortenson Lake National Wildlife Refuge, which encompasses four impoundments: Mortenson, Garber, Gibbs, and Soda lakes; the refuge is closed to the public (USFWS 2002e). The extant occurrence probably would be extirpated without recent annual releases of captive-reared toadlets. Populations at former re-introduction sites (Lake George on the Hutton Lake National Wildlife Refuge, and Rush Lake) have been lost due to drought (USFWS 2002e).