Abstract:[1] An analytical solution is developed and used to examine groundwater-surface water interaction at streams; we consider two-dimensional, steady groundwater flow in the vertical plane. The aquifer is idealized as an infinite strip, and the streambed is modeled as a horizontal equipotential. Segments of constant recharge are applied along the boundaries of the infinite strip. Explicit analytical solutions for the complex potential and complex specific discharge are developed using conformal mapping, the method… Show more
“…Dawoud (1997) modified a two-dimensional multilayer groundwater flow model for simulating a stream/aquifer interaction. Numerous researchers including Morel-Seytoux et al (1985), Peralta et al (1990), Ahlfeld and Minihane (2002), and Anderson (2003) treated the interaction between the stream and aquifer as a time dependant third type boundary condition (Cauchy Boundary Condition). The same mathematical approach used to describe stream/aquifer interaction can be used to describe interflows between a reservoir and an underlying aquifer.…”
Section: Surface Water and Groundwater Interactionmentioning
“…Dawoud (1997) modified a two-dimensional multilayer groundwater flow model for simulating a stream/aquifer interaction. Numerous researchers including Morel-Seytoux et al (1985), Peralta et al (1990), Ahlfeld and Minihane (2002), and Anderson (2003) treated the interaction between the stream and aquifer as a time dependant third type boundary condition (Cauchy Boundary Condition). The same mathematical approach used to describe stream/aquifer interaction can be used to describe interflows between a reservoir and an underlying aquifer.…”
Section: Surface Water and Groundwater Interactionmentioning
“…(For a recent overall review of the literature, the reader may refer to this publication, which contains 33 references. The reader may also consult Anderson [2003].) The case studied here is germane to the situation of a losing stream in hydraulic connection with the aquifer.…”
A combined analytical-numerical approach is presented to characterize properly the exchange flow between a stream and a hydraulically connected aquifer. It eliminates the need to use a three-dimensional fine grid under and in the vicinity of the river cross section in order to obtain accurate results. Basically the approach matches an analytical solution in a vertical two-dimensional (2D) plane with the numerical description of the aquifer behavior in a 2D horizontal plane. The approach is compared with a finite-difference formulation such as used in MODFLOW.
“…Kacimov (2000) derived a simple rigorous solution to a seepage problem for a hemispherical lake placed in an incident groundwater flow. A natural question that ensued from the results by Kacimov (2000) for an axisymmetric regime, by Strack (1989) for a 2-D flow near a fully penetrating cylindrical lake, and by Anderson (2003) for a shallow canal placed perpendicularly to the incident flow is: is there an explicit closed-form solution for a genuinely 3-D nonaxisymmetric case? In this paper we provide such a solution for a shallow circular water body that will be called a pond.…”
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