@misc{indiciae49e398fa3c7b,
  title = {River basins of the United States: the Delaware},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1981},
  doi = {10.3133/70039374},
  url = {https://pubs.usgs.gov/publication/70039374},
  note = {Source identifier: 70039374}
}