@misc{indiciae998fc9a2442d, title = {Digital Map of Water-Level Changes in the High Plains Aquifer in Parts of Colorado, Kansas, Nebraska, New Mexico, Oklahoma, South Dakota, Texas, and Wyoming, 1980 to 1997}, author = {Brian C. Fischer and Keith M. Kollasch and Virginia L. McGuire}, year = {2000}, doi = {10.3133/ofr200096}, url = {https://pubs.usgs.gov/publication/ofr200096}, note = {Source identifier: ofr200096} }