Using CRD method for quantification of groundwater recharge in the Gaza Strip, Palestine |
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Authors: | Husam Baalousha |
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Institution: | (1) Institute of Hydraulic Engineering and Water Resources Management, Aachen University of Technology (RWTH), Mies-van-der-Rohe-Str. 1, 52056 Aachen, Germany |
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Abstract: | Rainfall is the main source of groundwater recharge in the Gaza Strip area in Palestine. The area is located in the semi-arid
zone and there is no source of recharge other than rainfall. Estimation of groundwater recharge from rainfall is not an easy
task since it depends on many uncertain parameters. The cumulative rainfall departure (CRD) method, which depends on the water
balance principle, was used in this study to estimate the net groundwater recharge from rainfall. This method does not require
much data as is the case with other classical recharge estimation methods. The CRD method was carried out using optimisation
approach to minimise the root mean square error (RMSE) between the measured and the simulated groundwater head. The results
of this method were compared with the results of other recharge estimation methods from literature. It was found that the
results of the CRD method are very close to the results of the other methods, but with less data requirements and greater
ease of application. Based on the CRD method, the annual amount of groundwater recharge from rainfall in the Gaza Strip is
about 43 million m3.
An erratum to this article can be found at |
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Keywords: | Groundwater recharge/water budget Rainfall/runoff Arid regions Gaza Strip |
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