In 2019, Pennsylvania completed AMD abatement at Fran Camp Run No. 2 Mine, restoring 1.4 miles of Cooks Run. 7 years later, pH and metal impairments were finally cleared

An abandoned coal mine in Pennsylvania had affected Cooks Run and its tributaries for decades, but a 2019 cleanup project brought measurable improvements to water quality.

Fran Camp Run No. 2 Mine, an abandoned surface coal mine in Sproul State Forest near Renovo, was one of the primary sources of pollution affecting the Cooks Run watershed. Acid mine drainage, or AMD, causes low pH and high levels of metals, affecting water quality, fish, and other aquatic life.