@misc{indiciae743ca50359b6, title = {Water Resources Data, Pennsylvania, Water Year 2001. Volume 1. Delaware River Basin}, author = {R.R. Durlin and W.P. Schaffstall}, year = {2002}, doi = {10.3133/wdrpa011}, url = {https://pubs.usgs.gov/publication/wdrPA011}, note = {Source identifier: wdrPA011} }