@misc{indiciaedb4e82a8a170,
  title = {Hydrologic units},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1998},
  doi = {10.3133/32535},
  url = {https://pubs.usgs.gov/publication/32535},
  note = {Source identifier: 32535}
}