@misc{indiciaef284c31e34e3, title = {Water resources data Maryland and Delaware, water year 1990, volume 2: Monongahela and Potomac River Basins}, author = {R.W. James and J.F. Hornlein and R.H. Simmons and M.J. Smigaj}, year = {1990}, doi = {10.3133/wdrmdde902}, url = {https://pubs.usgs.gov/publication/wdrMDDE902}, note = {Source identifier: wdrMDDE902} }