@misc{indiciae023af0599782,
  title = {Guide for selecting Manning's roughness coefficients for natural channels and flood plains},
  author = {George J. Arcement and Verne R. Schneider},
  year = {1989},
  doi = {10.3133/wsp2339},
  url = {https://pubs.usgs.gov/publication/wsp2339},
  note = {Source identifier: wsp2339}
}