NATIONAL PARK SERVICE · news
Endangered Freshwater Species Shows Signs of Population Increases
November 18, 2025 · Source: National Park Service
An endangered freshwater mussel species in the Big South Fork National River & Recreation Area is showing signs of natural population increases for the first time. The tan riffleshell (Epioblasma walkeri) is an endangered mussel found in only a few locations within the Big South Fork of the Cumberland and the upper Clinch Rivers.
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Traveler guidance by State & Nation Staff Writer.