@misc{indiciae6e86f20760b0,
  title = {Contour map showing minimum depth to ground water, upper Santa Ana River valley, California, 1973-1979},
  author = {Scott E. Carson and Jonathan C. Matti},
  year = {1982},
  doi = {10.3133/ofr821128},
  url = {https://pubs.usgs.gov/publication/ofr821128},
  note = {Source identifier: ofr821128}
}