Hydrogeology of a Barrier Island System, Nags Head, North Carolinaby G. Richard Whittecar, Old Dominion Univ, United States,
Janet Salyer Emry, Old Dominion Univ, United States,
Abstract: The purpose of this research was to understand the dynamics of the water table prior to the start of municipal pumping and to predict the effect that the pumping would have upon the water table and, hence, the lake levels in Nags Head Woods. Models used to simulate the water table system first calculated the predicted water table elevations throughout the study area and then subtracted the predicted effects of municipal pumpage from the predicted natural water levels. Simulations made with two models indicate that the oval cone of depression about the lake will be nearly symmetric. Most flow into Fresh Pond from the water table will occur from the east where gradients will be the steepest. During periods of both 'typical' and 'dry' summer conditions and for pumpage rates between 950 and 5600 m3/day increase in pumping.
Subject Headings: Municipal water | Water table | Hydrologic models | Pumps | Barrier islands | Hydrogeology | Head (fluid mechanics) | Water resources | Lakes | Model analysis | Simulation models | North Carolina
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