@misc{indiciae6939dbb50467,
  title = {National Water-Quality Assessment Program - Upper Colorado River Basin},
  author = {Nancy E. Driver},
  year = {1994},
  doi = {10.3133/ofr94102},
  url = {https://pubs.usgs.gov/publication/ofr94102},
  note = {Source identifier: ofr94102}
}