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Modeling Tools for Ground Water - Surface Water Interactions
This project develops algorithms for simulating the dynamic interactions between surface water and ground water in rivers and riparian streams. The algorithms rely on physically based linear response functions which describe the exchange rates and volumes of water between the streams and ground waters under naturally induced phenomena and man-made activities. The response functions predict the storage and release of water in rates and volumes from stream bands during and after storm events. They can also predict the sustenance of base flow by ground water recharge during wet seasons, and the depletion of streams under drought conditions. Discrete forms of these linear response functions are also derived to extend their domain of applicability to time-variable recharge/evapotranspiration and spatially variable stream channel and aquifer properties. This research will lead to the development of a physically-based, handy tool for continuous-time simulation of ground water-surface water interactions in rivers and stream riparian zones. The algorithms have the potential to be used in assessing the impact of restoration measures and land use changes in a watershed on base-flow generation.
Contact: Mohamed M. Hantush, (EIMS#80727)