TY - RPRT TI - Construction and calibration of a groundwater-flow model to assess groundwater availability in the uppermost principal aquifer systems of the Williston Basin, United States and Canada AU - Kyle W. Davis AU - Andrew J. Long PY - 2018 DO - 10.3133/sir20175158 UR - https://pubs.usgs.gov/publication/sir20175158 ID - sir20175158 ER -