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Recharge estimation of a small karstic aquifer in a semiarid Mediterranean region (southeastern Spain) using a hydrological mode.

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Touhami, Issam and Andreu Rodríguez, José Manuel and Chirino, E. and Sánchez Sutil, J. R. and Moutahir, H. and Pulido Bosch, A. and Martínez Santos, Pedro and Bellot, J. (2013) Recharge estimation of a small karstic aquifer in a semiarid Mediterranean region (southeastern Spain) using a hydrological mode. Hydrological processes, 27 . pp. 165-174. ISSN 0885-6087

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Official URL: https://doi.org/10.1002/hyp.9200



Abstract

Mediterranean aquifers are frequently subject to the joint effect of intensive exploitation and low recharge values. Besides, groundwater is the only available water resource in many Mediterranean regions. Groundwater recharge studies are therefore necessary to underpin water management practices. This manuscript presents a methodology to estimate groundwater recharge in a small limestone aquifer of southeastern Spain. The HYDROBAL model is used to calculate daily soil water balances on the basis of hydrological and soil data as well as on vegetation cover. Deep drainage model outputs are converted into water table variations using a lumped model add‐on. The adjustment between observed and calculated water table levels is in the order of r2 = 0.87. This correlation coefficient suggests that HYDROBAL is a useful tool to estimate groundwater recharge in the region. In addition, differences in groundwater recharge rates are observed for dry, average and wet years. Estimated recharge rates range between 0% and 18% of the mean annual rainfall, which corresponds to a net recharge of 0 to 59 mm year−1. Recharge rates increase proportionally with precipitation (r 2 = 0.90).


Item Type:Article
Uncontrolled Keywords:Water resources; Groundwater recharge; Soil water balance; Karstic aquifers; Semiarid regions
Subjects:Sciences > Geology > Hidrology
ID Code:64614
Deposited On:06 Apr 2021 10:47
Last Modified:06 Apr 2021 11:04

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