The PDF documents below list rare species known to occur within watersheds as mapped by the US Geologic Survey (USGS) and
the TDEC Division of Water Pollution Control.
Rare Species by HUC-8 Watershed
(.pdf format)
Rare Species by HUC-12 Watershed (.pdf format)
Contact:
Silas Mathes
Data Manager, Heritage Program
(615) 532-0440
