Derivation of 2-D Flow Lines from Water Table Data in Heterogeneous Aquifer by Developing Specific Finite Difference Method Programs

Abstract

This study makes it possible to draw conclusions about the configuration of regional groundwater systems by using a numerical model. The model uses finite difference numerical method commonly used to investigate saturated groundwater flow system. A two-dimensional (2-D) vertical cross-section is used in the model because it is useful to conceptualize the flow system, determine reasonable ranges of aquifer parameters, assets model boundaries, and to determine the most influential parameters in the system. Details of steady-state flow in regional groundwater basins can be investigated using specific numerical model simulations of finite difference method (FDM). The developed programs were run to evaluate the factors that control the interaction of bay and groundwater. The study concerns only with bay encircled by water table mounds that are at a higher altitude in vertical section show that for typical hydrogelogic settings, the line (divide) separating the local from the regional groundwater flow systems in continuous beneath bay. Bay bottom sediments are considered this study flow net. Two cases of aquifer hydraulic conductivity (K _a1 = 100 ft/day, K _a2 = 50 ft/day) and bay sediments hydraulic conductivity (K _b = 5 ft/day) are assumed in this study.