Geohydrology and Numerical Simulation of Alternative Pumping Distributions and the Effects of Drought on the Ground-Water Flow System of Tinian, Commonwealth of the Northern Mariana Islands

摘要

The purpose of this report is to describe (1) the geologic and hydrologic setting of Tinian, (2) the numerical ground-water flow model developed, (3) the results of the model simulations that assess the hydrologic effects of drought on the freshwater lens, and (4) data needs. No new data were collected for this report; only existing data were used to develop the conceptual framework of the ground-water flow system. A numerical ground-water flow model of Tinian was used to refine the conceptual framework and to estimate the effects of different withdrawal scenarios and drought on ground-water levels, the freshwater/saltwater interface, and coastal discharge.