Established in 1897 by the U.S. Fish and Wildlife Service, Erwin National Fish Hatchery produces approximately 16 million disease-free eggs annually from three strains of rainbow trout and one strain of brook trout. These eggs are shipped to other Federal, State and Tribal hatcheries to support fishery management efforts. The station also provides eggs to research centers, classrooms, and universities. Broodstock operations are performed in a manner that will preserve or optimize the genetic diversity of hatchery fish. In addition, Erwin NFH is part of long term efforts to restore populations of Southern Appalachian Brook trout and freshwater mussels.