@misc{indiciae2fcc98eb2706, title = {Water Resources Data, Pennsylvania, Water Year 1999. Volume 2. Susquehanna and Potomac River Basins}, author = {R.R. Durlin and W.P. Schaffstall}, year = {2000}, doi = {10.3133/wdrpa992}, url = {https://pubs.usgs.gov/publication/wdrPA992}, note = {Source identifier: wdrPA992} }