@misc{indiciaec579031fe53d,
  title = {Floods of April-May 1969 in upper Midwestern United States},
  author = {David B. Anderson and Harlan H. Schwob},
  year = {1970},
  doi = {10.3133/ofr707},
  url = {https://pubs.usgs.gov/publication/ofr707},
  note = {Source identifier: ofr707}
}