@misc{indiciae3a61473aa592,
  title = {Groundwater quality, age, and probability of contamination, Eagle River watershed valley-fill aquifer, north-central Colorado, 2006-2007},
  author = {Michael G. Rupert and Niel Plummer},
  year = {2009},
  doi = {10.3133/sir20095082},
  url = {https://pubs.usgs.gov/publication/sir20095082},
  note = {Source identifier: sir20095082}
}