@misc{indiciae51b1b0c10be4,
  title = {Contour map showing minimum depth to ground water, Upper Santa Ana River Valley, California, 1973-1979},
  author = {S. E. Carson and J. C. Matti},
  year = {1985},
  doi = {10.3133/mf1802},
  url = {https://pubs.usgs.gov/publication/mf1802},
  note = {Source identifier: mf1802}
}