@misc{indiciaefa6833c400ee,
  title = {1:250,000-scale Hydrologic Units of the United States},
  author = {Peter Steeves and Douglas Nebert},
  year = {1994},
  doi = {10.3133/ofr19940236},
  url = {https://pubs.usgs.gov/publication/ofr19940236},
  note = {Source identifier: ofr19940236}
}