@misc{indiciaeff92077d90cd,
  title = {Water-quality assessment of the South Platte River Basin, Colorado, Nebraska, and Wyoming: Environmental setting and water quality of fixed sites, 1993-95},
  author = {D. W. Litke and Robert Kimbrough},
  year = {1998},
  doi = {10.3133/wri974220},
  url = {https://pubs.usgs.gov/publication/wri974220},
  note = {Source identifier: wri974220}
}