@misc{indiciaec34c7a2849d4,
  title = {Surface-water-quality assessment of the upper Illinois River Basin in Illinois, Indiana, and Wisconsin; fixed-station network and selected water-quality data for April 1987-September 1990},
  author = {Daniel J. Sullivan and Stephen F. Blanchard},
  year = {1994},
  doi = {10.3133/ofr91175},
  url = {https://pubs.usgs.gov/publication/ofr91175},
  note = {Source identifier: ofr91175}
}