Regional Evaluation of Hydrologic Factors and Effects of Pumping, St. Peter-Jordan Aquifer, Iowa

摘要

The study includes that part of the Cambrian-Ordovician aquifer system in Iowa and parts of the adjoining states that contain the St. Peter-Jordan aquifer. The report defines the range of values of hydrologic characteristics that affect ground-water movement in the St. Peter-Jordan aquifer and provides estimates of the effects of continued withdrawal on water levels in the aquifer. This purpose was accomplished by developing a ground-water flow model to quantitatively determine the source, and the movement and discharge of water under predevelopment and stressed conditions. The St. Peter-Jordan aquifer includes the Cambrian Jordan Sandstone and the overlying Ordovician Prairie du Chien Group and St. Peter Sandstone.