@misc{indiciae6ed8d39c2b13,
  title = {Risk analyses for a water-supply system; Occoquan Reservoir, Fairfax and Prince William counties, Virginia},
  author = {Robert M. Hirsch},
  year = {1978},
  doi = {10.3133/ofr78452},
  url = {https://pubs.usgs.gov/publication/ofr78452},
  note = {Source identifier: ofr78452}
}