@misc{indiciae5535bd475372,
  title = {Water-level records for the Big Sioux aquifer, Minnehaha County, South Dakota},
  author = {Wendell L. Bradford},
  year = {1981},
  doi = {10.3133/ofr81222},
  url = {https://pubs.usgs.gov/publication/ofr81222},
  note = {Source identifier: ofr81222}
}