@misc{indiciaefaefab9b769b,
  title = {Attributes for NHDPlus Catchments (Version 1.1): Level 3 Nutrient Ecoregions, 2002},
  author = {Michael Wieczorek and Andrew E. LaMotte},
  year = {2010},
  doi = {10.3133/dds49013},
  url = {https://pubs.usgs.gov/publication/dds49013},
  note = {Source identifier: dds49013}
}