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

Figure 10

Map of potentiometric surface (hydraulic head contour lines in meters) in rocks of Missourian age, after Nelson et al. ([7], Figure  14C). Hydraulic head ranges from less than 244 m in water wells in Missouri and Oklahoma to greater than 732 m in oil and gas wells in eastern Colorado. Dots represent well control. Control data for the hydrologic model were taken along 800 km line .