Research Article

Simulating the Evolution of Fluid Underpressures in the Great Plains, by Incorporation of Tectonic Uplift and Tilting, with a Groundwater Flow Model

Figure 12

Hydraulic head versus distance digitized from head contours. Hydraulic head for six geohydrologic units along line , which serve as control data for the hydrologic model of this paper. Head values were digitized from potentiometric maps such as those shown in Figures 9, 10, and 11.