@misc{indiciae7b72b04900e1,
  title = {Operating manual for the digital data-collection system for flow-control structures},
  author = {J.I. Rorabaugh and W.L. Rapp},
  year = {1986},
  doi = {10.3133/ofr85691},
  url = {https://pubs.usgs.gov/publication/ofr85691},
  note = {Source identifier: ofr85691}
}