DistributionRead full entry
Global Range: This species is currently known from seven streams on the Walden Ridge portion of the Cumberland Plateau in Tennessee, where drainages generally meander eastward before dropping abruptly down the plateau escarpment and draining into the Tennessee River. These seven streams occur in three independent systems: Soddy Creek; three streams that are part of the Sale Creek system (the Horn and Laurel branch tributaries to Rock Creek, and the Cupp Creek tributary to Roaring Creek); and three streams that are part of the Piney River system (Young's, Moccasin, and Bumbee creeks). The current distribution comprises six of the seven streams that were historically occupied; the species is considered extirpated from Laurel Branch. In these six streams, the species is known to occupy reaches of approximately 0.3 to 8 km (0.2 to 5 mi) in length. The total area of Walden Ridge is around 3,585 square kilometers. Source: Skelton 1997, 2001; USFWS, Federal Register, 24 June 2010).