DistributionRead full entry
Global Range: (1000-5000 square km (about 400-2000 square miles)) Formerly this species was thought to be endemic to Miller Lake (16 km northeast of Mt. Thielson), Klamath County, Oregon (Lee et al. 1980), where the species was last collected in the early 1950s. Recent surveys documented populations in Miller Creek, Jack Creek, and the upper sections of the Williamson and Sycan rivers, in the upper Klamath River Basin, Klamath and Lake counties, Oregon (Lorion et al. 2000, Page and Burr 2011).