@misc{indiciaee878bee657d4,
  title = {Water resources data for Illinois, water year 1981; Volume 2, Illinois River basin},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1982},
  doi = {10.3133/wdril812},
  url = {https://pubs.usgs.gov/publication/wdrIL812},
  note = {Source identifier: wdrIL812}
}