@misc{indiciaea0ea6b49de50,
  title = {National Water-Quality Assessment program; South Platte River basin},
  author = {Kevin F. Dennehy},
  year = {1991},
  doi = {10.3133/ofr91155},
  url = {https://pubs.usgs.gov/publication/ofr91155},
  note = {Source identifier: ofr91155}
}