Evaluation Of The Interaction Between Rivers
And Aquifers For Water Supply
Author(s)
J. D. Martínez-Nájera1, C. Cruickshank-Villanueva2
& M. Berezowsky-Verduzco2
Abstract
A mathematical model to evaluate coupled supply systems of rivers and aquifer
types is presented; it is applied in the qualitative and quantitative estimation of
extraction effects on the rivers and related aquifers under different hydrologic
situations, with the purpose of determining the supply potential of the system.
The model consists of the conceptual and numerical coupling of two structures
that take into account different aspects of the systems under consideration. The
first is for analyzing free-surface flow, and the second to carry out the analysis of
flow in each one of the aquifers of interest for evaluation purposes. The coupling
process occurs in iterative terms, the numerical implementation is realized by
means of MODFLOW and ISIS. The approach is applied to the Papagayo River
and the aquifers located in their river beds, in Guerrero State, México. The model
is consistent with the field observations and numerically demonstrates that the
system is able to yield the required volume by the aquifers and directly from the
river.
Keywords: river-aquifer coupled systems, equations of Saint-Venant, balance of
flow in aquifers and Darcy’s law.
1 Introduction
The flow of water in streams and aquifers follow its own field equations of
balance of mass, energy and constitutive relationships, each system is related
with the other by coupling terms. The purpose of the work is to present an
approach to evaluate the dynamic of rivers and aquifers as supply systems under
realistic conditions; the numerical implementation is carried out by using
Keywords
river-aquifer coupled systems, equations of Saint-Venant, balance offlow in aquifers and Darcy’s law
Related Book
Other papers in this volume
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