@misc{indiciaeed6560127363,
  title = {Potentiometric surface of the Upper Patapsco aquifer in southern Maryland, September 2009},
  author = {Stephen E. Curtin and David C. Andreasen and Andrew W. Staley},
  year = {2010},
  doi = {10.3133/ofr20101205},
  url = {https://pubs.usgs.gov/publication/ofr20101205},
  note = {Source identifier: ofr20101205}
}