Conceptual Model of the Uppermost Principal Aquifer Systems in the Williston and Powder River Structural Basins, United States and Canada. Groundwater Resources Program.

摘要

This report describes a conceptual model for the three uppermost principal aquifer systems in the Williston and Powder River structural basins in the United States and Canada, consisting of an assessment of groundwater resources for 1981-2005. This conceptual model provides a basis on which to characterize system response to future anthropogenic and environmental stresses. Described in this report is a characterization of groundwater flow and an estimation of groundwater recharge and discharge for the three uppermost principal aquifer systems. The information in this report, together with a description of the hydrogeologic framework of the same three principal aquifer systems (Thamke and others, 2014), could be used to construct a numerical groundwater-flow model to test aquifer stresses, such as the effects of changes in water use and climate.