The Loyalhanna Watershed Association knows that many of its 2,500 miles of streams and rivers have been negatively impacted by things such as abandoned mine drainage and runoff from farmlands, but no one knows the extent of the damage. The association is in the midst of a three year project to assess the health of all 300 square miles of the watershed. DUQ's Mark Nootbaar accompanied members of the association on a recent trek through the area around Ligonier.
Listen to the full-length story here.
This story originally aired on WDUQ September 29. 2003.