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Elk County Freshwater Association - Elk County PA

Problems

Big Mill Creek – What’s Wrong?

  • SOx & NOx loading from fossil fuel emissions
  • Depletion of soil and shallow groundwater buffering
  • Decrease in soil pH & increase in soluble aluminum
  • Decrease in headwater alkalinity & pH
    • Chronic acidification
    • Episodic acidification
  • Downstream migration of acidification
    • Episodic & chronic

Historical Water Quality in Big Mill Run Elk County PA