@misc{indiciae85d50208986f,
  title = {Monitoring and Assessing our Nation's Water Quality},
  author = {Gail E. Mallard and Pixie A. Hamilton},
  year = {2002},
  doi = {10.3133/fs07602},
  url = {https://pubs.usgs.gov/publication/fs07602},
  note = {Source identifier: fs07602}
}