@misc{indiciae712fb261c37e,
  title = {Groundwater age estimates for the Mississippi River Valley alluvial aquifer based on tracer data collected during 2018–20},
  author = {Michael C. Gratzer and John E. Solder and Katherine J. Knierim and James A. Kingsbury and Andrew M. O’Reilly and Gregg R. Davidson},
  year = {2025},
  doi = {10.3133/sir20245127},
  url = {https://pubs.usgs.gov/publication/sir20245127},
  note = {Source identifier: sir20245127}
}