Hydrogeology and Simulation of Ground-Water Flow in the Thick Regolith-FracturedCrystalline Rock Aquifer System of Indian Creek Basin, North Carolina. Chapter C

摘要

The purpose of this report is to describe the hydrogeologic framework and resultsof ground-water flow simulations in part of the southwestern Piedmont of North Carolina. Hydrogeologic information on the region is presented, including a conceptual model of the flow system and application of a finite-difference ground-water flow model based on this conceptual model. The flow model simulations are designed to characterize the complex two-part aquifer system that underlies much of the Piedmont. Discussions include descriptions of modeling procedures and flow boundaries, and determination of aquifer properties. Model calibration strategies, steady-state conditions prior to 1991, and a sensitivity analysis are also described. Results of the simulations are discussed with respect to changes in ground-water flow as shown by changes in the water budget, potentiometric surfaces of the model layers, and direction of ground-water flow through the aquifer system. An inventory and analysis of available ground-water and surface-water data used in support of model design are also presented.