@misc{indiciae4f0aa7b65c04, title = {Water resources data Maryland and Delaware, water year 1989, Volume 2: Monongahela and Potomac River Basins}, author = {R.W. James and R.H. Simmons and B.F. Strain and M.J. Smigaj}, year = {1989}, doi = {10.3133/wdrmdde892}, url = {https://pubs.usgs.gov/publication/wdrMDDE892}, note = {Source identifier: wdrMDDE892} }