@misc{indiciae18cdeae4df26,
  title = {Attributes for NHDPlus Catchments (Version 1.1) for the Conterminous United States: Normalized Atmospheric Deposition for 2002, Ammonium (NH4)},
  author = {Michael Wieczorek and Andrew E. LaMotte},
  year = {2010},
  doi = {10.3133/dds49014},
  url = {https://pubs.usgs.gov/publication/dds49014},
  note = {Source identifier: dds49014}
}