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Subsurface And Surface Water Flow Interactions
Citation:
HANTUSH, M. M., L. Kalin, AND R. S. Govindaraju. Subsurface And Surface Water Flow Interactions. Chapter 9, M.M. Aral and S.W. Taylor (ed.), Groundwater Quantity and Quality Management, ISBN 9780784411766 . American Society of Civil Engineers (ASCE), Reston, VA, , 295-393, (2011).
Impact/Purpose:
To present basic concepts and principles underlying the phenomena of groundwater and surface water interactions. Also discuss classical and recent developments in modeling stream depletion due to groundwater pumping. A brief discussion of the analytical element method and watershed-scale modeling of groundwater and surface water interactions is presented.
Description:
In this chapter we present basic concepts and principles underlying the phenomena of groundwater and surface water interactions. Fundamental equations and analytical and numerical solutions describing stream-aquifer interactions are presented in hillslope and riparian aquifer environments. Analytical and numerical techniques for solving flow routing problems in channels with contiguous alluvial aquifers are covered, including the bank storage phenomenon. We also discuss classical and recent developments in modeling stream depletion due to groundwater pumping. Several sections are devoted to concepts and models for surface runoff and subsurface water interactions and variably saturated flow. Physically-based baseflow models derived from the well-known Boussinesq equations and their relationship to the famiiar exponential and hyperbolic empirical recession curves are presented, including implications on up-scaling aquifer parameters to catchment scales. Concepts behind different modes of coupling subsurface and surface waters, with emphasis on the widely used MODFLOW package and variations thereof are discussed. A brief discussion of the analytical element method and watershed-scale modeling of groundwater and surface water interactions is presented. The chapter ends with a case-study on watershed-scale modeling of ground and surface water interactions.
