The determination of the hydrologic characteristics of a leaky confined aquifer is approached from several viewpoints: (a) analysis of pumping tests, (b) fitting of steady-state mathematical models, (c) analog simulation, and (d) digital computer simulation. The Castle Hayne aquifer in eastern North Carolina is used as a case study. The aquifer is analyzed as a heterogeneous isotropic system. The inputs and outputs of the system are considered; the hydraulic connection between the aquifer and the underlying and overlying aquifers is examined. The verified digital model is used for prediction purposes under hypothetical strategies of development. The groundwater quality is considered to be of major importance in the optimal management of the aquifer on a regional basis. (Modified author abstract)