When citing nhdR, please cite both the package and underlying data
sources used:

  Stachelek, J. (2023). Tools for working with the National Hydrography
  Dataset. R package version 0.6.0.
  https://cran.r-project.org/package=nhdR

A BibTeX entry for LaTeX users is

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

  USGS. (2022) National Hydrography Dataset. Technical Report. United
  States Geological Survey. https://www.usgs.gov/national-hydrography

A BibTeX entry for LaTeX users is

  @Manual{,
    author = {{USGS}},
    title = {National Hydrography Dataset. Technical Report. United States
Geological Survey},
    year = {2022},
    url = {https://www.usgs.gov/national-hydrography},
  }