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Hydrology 2016, 3(2), 17; doi:10.3390/hydrology3020017

Impact of Climate Change on Groundwater Resources in the Klela Basin, Southern Mali

1
Graduate Research Program on Climate Change and Water Resources, West African Science Service Center on Climate Change and Adapted Land Use (WASCAL), Department of Applied Hydrology, University of Abomey-Calavi, Cotonou, Abomey-Calavi BP 2008, Benin
2
Department of Geography, University of Bonn, Bonn 53115, Germany
3
Department of Geology, National Engineer School, Bamako BP 242, Mali
These authors contributed equally to this work.
*
Author to whom correspondence should be addressed.
Academic Editor: Luca Brocca
Received: 22 March 2016 / Revised: 27 April 2016 / Accepted: 28 April 2016 / Published: 2 May 2016
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Abstract

Investigations of groundwater resources in order to understand aquifer system behavior are vital to the inhabitants of the Klela Basin, Mali, because groundwater is the only permanent water resource and is used for drinking water and irrigation. Due to climate change, this vital resource is being threatened. Therefore, MODFLOW was applied in this study to simulate groundwater dynamics. The aim of this study was to evaluate the impact of climate change on groundwater resources in the Klela basin using the RCP4.5 (Representative Concentration Scenario 4.5 W/m2) climate scenario. Climatological, geological, hydrogeological, hydraulic and demographic data were collected and used as model input data. Groundwater recharge was estimated to be approximately 165.3 mm/year using the EARTH (Extended model for Aquifer Recharge and soil moisture Transport through the unsaturated Hardrock) model. Recharge was then used as groundwater model input. The sandstone aquifer in the study area was simulated in steady and transient conditions. The results showed that hydraulic conductivity values varied from 1.1 to 13.9 m/day. The model was used for scenario quantification after model calibration and verification using three different piezometer data sets. The results of the simulated MODFLOW model showed a decrease in groundwater levels over time. View Full-Text
Keywords: Groundwater; EARTH model; PMWIN; climate change; Klela basin; southern Mali Groundwater; EARTH model; PMWIN; climate change; Klela basin; southern Mali
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Toure, A.; Diekkrüger, B.; Mariko, A. Impact of Climate Change on Groundwater Resources in the Klela Basin, Southern Mali. Hydrology 2016, 3, 17.

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