Stachelek, J. (2019). Tools for working with the National Hydrography Dataset. R package version 0.5.2. https://cran.r-project.org/package=nhdR

@Manual{,
  author = {Jemma Stachelek},
  title = {Tools for working with the National Hydrography Dataset},
  year = {2019},
  url = {https://cran.r-project.org/package=nhdR},
}

USGS. (2021) National Hydrography Dataset. Technical Report. United States Geological Survey. https://www.usgs.gov/core-science-systems/ngp/national-hydrography

@Manual{,
  author = {{USGS}},
  title = {National Hydrography Dataset. Technical Report. United States
Geological Survey},
  year = {2021},
  url = {https://www.usgs.gov/core-science-systems/ngp/national-hydrography},
}
  • Jemma Stachelek. Author, maintainer.