TY  - RPRT
TI  - Digital map of water levels in 1980 for the High Plains Aquifer in parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming
AU  - Joel R. Cederstrand
AU  - Mark F. Becker
PY  - 1999
DO  - 10.3133/ofr99263
UR  - https://pubs.usgs.gov/publication/ofr99263
ID  - ofr99263
ER  -