@misc{indiciae5777fd741bb9,
  title = {Geohydrologic unit boundaries along the Colorado Front Range},
  author = {Sharon Rafferty},
  year = {1998},
  doi = {10.3133/70046229},
  url = {https://pubs.usgs.gov/publication/70046229},
  note = {Source identifier: 70046229}
}