@misc{indiciae3a9a2fd900d6,
  title = {Water-level changes 1964-71, northern High Plains of Colorado},
  author = {Warren E. Hofstra and John M. Klein and Thomas J. Major},
  year = {1971},
  doi = {10.3133/ofr72166},
  url = {https://pubs.usgs.gov/publication/ofr72166},
  note = {Source identifier: ofr72166}
}