@misc{indiciae86a5b8c2ed75,
  title = {Water-level records for the lower Arkansas River Valley of Colorado, 1973-77},
  author = {Robert D. Penley},
  year = {1977},
  doi = {10.3133/ofr77560},
  url = {https://pubs.usgs.gov/publication/ofr77560},
  note = {Source identifier: ofr77560}
}