 The river is classified as a warm water fishery and historically supports a variety of fish, including smallmouth bass, sunfish, and muskellunge in all but the lower (from Taylortown to Poland Mines, Pennsylvania), which have been devastated by decades of unchecked acid mine drainage (AMD).In 2007, thanks to the support of an EPA Targeted Watersheds Grant, the Greene County Watershed Alliance and the Friends of Dunkard Creek sought to reclaim part of the lower by creating a passive treatment system, or constructed wetlands, on the Mathews farm near Poland Mines.At this site, the abandoned Maiden #1 mine dumped over a million gallons of untreated AMD into Dunkard Creek each day.