@misc{indiciae3b20f7b4ed0d, title = {Effects of abandoned coal-mine drainage on streamflow and water quality in the Shamokin Creek Basin, Northumberland and Columbia Counties, Pennsylvania, 1999-2001}, author = {Charles A. Cravotta and Carl S. Kirby}, year = {2003}, doi = {10.3133/wri034311}, url = {https://pubs.usgs.gov/publication/wri034311}, note = {Source identifier: wri034311} }