To understand the effects of projected increased demands on groundwater to supply water, a finite-difference, steady-state, nine-layer, groundwater flow model was used to simulate groundwater flow in the Coastal Plain sediments of southern New Castle County, Delaware. The model simulates flow in the Columbia (water table), Rancocas, Mt. Laurel, combined Potomac A/Magothy, Potomac B, and Potomac C aquifers and intervening confining beds. Although the model domain extends north of the Chesapeake and Delaware Canal, east into New Jersey, west into Maryland, and south into northern Kent County, the model focuses on the area between the Chesapeake and Delaware Canal, the Delaware River, and the Maryland-Delaware border. Boundary conditions for these areas were derived from modeling studies completed by others over the past 10 years.
The calibrated model successfully simulated groundwater flow directions in the Rancocas and Mt. Laurel aquifers that wewre expected from the conceptual model