2013 : Rivers in Florida , California and Texas are among the ten most endangered . Known for its fishing , swimming and kayaking , this popular vacation spot faces threats from a bottling plant and tourism-related development . Report released Tuesday by American Rivers , a leading river - conservation group . Waterways from past American Rivers ' endangered list have been preserved .
2013 : Rivers in Florida , California and Texas are among the ten most endangered . Report released Tuesday by American Rivers , a leading river - conservation group . Waterways from past American Rivers ' endangered list have been preserved .