@misc{indiciae3242fa6404ee,
  title = {Flood tracking chart for the Potomac River basin},
  author = {Edward J. Doheny and Timothy W. Auer and Andrew LaMotte},
  year = {1997},
  doi = {10.3133/ofr97777},
  url = {https://pubs.usgs.gov/publication/ofr97777},
  note = {Source identifier: ofr97777}
}