@misc{indiciae4f868f8827da,
  title = {Flood tracking chart for the Illinois River basin},
  author = {Charles F. Avery and Robert R. Holmes and Jennifer B. Sharpe},
  year = {1998},
  doi = {10.3133/ofr98390},
  url = {https://pubs.usgs.gov/publication/ofr98390},
  note = {Source identifier: ofr98390}
}