TY  - RPRT
TI  - Depth of groundwater used for drinking-water supplies in the United States
AU  - James R. Degnan
AU  - Leon J. Kauffman
AU  - Melinda L. Erickson
AU  - Kenneth Belitz
AU  - Paul E. Stackelberg
PY  - 2021
DO  - 10.3133/sir20215069
UR  - https://pubs.usgs.gov/publication/sir20215069
ID  - sir20215069
ER  -