Integrated Management of Wadi aquifers Using Mathematical Modelling and Optimization Approach
Integrated Management of Wadi aquifers Using Mathematical Modelling and Optimization Approach
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Date
2016-04-16
Authors
Abdo, Gamal
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Publisher
uofk
Abstract
Groundwater represents a vital source of fresh water supply in many parts of Sudan. Recently, there is
a growing concern about this important resource and its development for combating drought and
overcoming the erratic nature of rainfall over large areas of the country. In order to develop
appropriate management policies of groundwater abstraction, there is a need for improved
understanding of aquifer behavior and its interactions with other hydrological phenomena. Among the
important tools used to achieve the above goals are mathematical modeling and optimization
techniques. In this study, an integrated mathematical modelling and optimization approach was
applied to an important aquifer in Eastern Sudan, which is primarily recharged from Wadi bed
transmission losses. The integrated model consists of two sub models; a numerical sub model for
simulating the aquifer behavior and a sub model that relates the groundwater recharge to the Wadi
flow. The combined model is an integrated parameter optimization model. Out of a total of four years
of monthly water level data at five observation wells and monthly Wadi flows, three years were used
for model calibration and the remaining year was used for model verification. The integrated model is
then used to investigate the future consequences of a number of pumping scenarios from the aquifer
to be used for town water supply conjunctively with the other available water resources. Accordingly,
the optimum operating policy that will guide pumping from the aquifer up to 2010 is recommended.
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Integrated Management of Wadi aquifers Using Mathematical Modelling and Optimization Approach