@misc{indiciae1560ddb6f737, title = {National water information system user's manual; Volume 2, Chapter 3, Automated data processing system}, author = {G. R. Dempster}, year = {1990}, doi = {10.3133/ofr90116}, url = {https://pubs.usgs.gov/publication/ofr90116}, note = {Source identifier: ofr90116} }