@misc{indiciae862f038ba447,
  title = {Potentiometric surface of the Mississippi River Valley alluvial aquifer, spring 2016},
  author = {Virginia L. McGuire and Ronald C. Seanor and William H. Asquith and Wade H. Kress and Kellan R. Strauch},
  year = {2019},
  doi = {10.3133/sim3439},
  url = {https://pubs.usgs.gov/publication/sim3439},
  note = {Source identifier: sim3439}
}