@misc{indiciaec78d490be6e3,
  title = {Estimate of ground water in storage in the Great Lakes basin, United States, 2006},
  author = {William F. Coon and Rodney A. Sheets},
  year = {2006},
  doi = {10.3133/sir20065180},
  url = {https://pubs.usgs.gov/publication/sir20065180},
  note = {Source identifier: sir20065180}
}