To cite nhdplusTools in publications, please use:

Blodgett D (2018). nhdplusTools: Tools for Accessing and Working with the NHDPlus. https://code.usgs.gov/water/nhdplusTools.

Corresponding BibTeX entry:

  @Manual{,
    author = {David Blodgett},
    title = {nhdplusTools: Tools for Accessing and Working with the
      NHDPlus},
    publisher = {U.S. Geological Survey},
    address = {Reston, VA},
    version = {0.3.8},
    institution = {U.S. Geological Survey},
    year = {2018},
    url = {https://code.usgs.gov/water/nhdplusTools},
  }