@misc{indiciae3e6e4ea41b27,
  title = {Index of flood maps for California prepared by the U.S. Geological Survey through 1974},
  author = {John R. Crippen},
  year = {1975},
  doi = {10.3133/ofr100237},
  url = {https://pubs.usgs.gov/publication/ofr100237},
  note = {Source identifier: ofr100237}
}