@misc{indiciaeeee59a583a16,
  title = {Potentiometric surface of the upper Patapsco aquifer in southern Maryland, September 2000},
  author = {Stephen E. Curtin and David C. Andreasen and Judith C. Wheeler},
  year = {2002},
  doi = {10.3133/ofr02246},
  url = {https://pubs.usgs.gov/publication/ofr02246},
  note = {Source identifier: ofr02246}
}