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Isotope Tracking of Surface Water Groundwater Interaction in the Beninese Part of the Iullemeden Aquifer System
Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
School of Nuclear and Allied Sciences (SNAS), University of Ghana-Atomic Campus, Accra, Ghana
Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
School of Nuclear and Allied Sciences (SNAS), University of Ghana-Atomic Campus, Accra, Ghana
Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
International Chair in Mathematical Physics and Applications (ICMPA-UNESCO Chair), Université d’Abomey-Calavi, Abomey-Calavi, Benin
Ghana Atomic Energy Commission (GAEC), Accra, Ghana
- 1 Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
- 2 School of Nuclear and Allied Sciences (SNAS), University of Ghana-Atomic Campus, Accra, Ghana
- 3 Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
- 4 School of Nuclear and Allied Sciences (SNAS), University of Ghana-Atomic Campus, Accra, Ghana
- 5 Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
- 6 Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
- 7 Laboratoire d’Hydrologie Appliquée (LHA) of Institut National de l’Eau (INE), Université d’Abomey-Calavi, Abomey-Calavi, Benin
- 8 International Chair in Mathematical Physics and Applications (ICMPA-UNESCO Chair), Université d’Abomey-Calavi, Abomey-Calavi, Benin
- 9 Ghana Atomic Energy Commission (GAEC), Accra, Ghana
Journal of Water Resource and Protection·Volume 16 (2024)·Pages 489–501·Published 9 July 2024·DOI10.4236/jwarp.2024.167027
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Abstract
The Kandi basin is located in northeast Benin (West Africa). This study is focused on the estimation of water fluxes exchanged between the river Niger (and its tributaries) and the transboundary Iullemeden Aquifer System. In that framework, an innovative approach based on the application of the Bayesian Mixing Model (MixSIAR) analysis on water isotopes (oxygen-18, deuterium and tritium) was performed. Moreover, to assess the relevance of the model outputs, Pearson’s correlation and Principal Component Analysis (PCA) have been done. A complex relationship between surface water and groundwater has been found. Sixty percent (60%) of groundwater samples are made of more than 70% river water and rainwater; while 31.25% of surface water samples are made of about 84% groundwater. To safeguard sustainable water resources for the well-being of the local communities, surface water and groundwater must be managed as a unique component in the Kandi basin.
KeywordsBeninWest AfricaKandi basinIullemeden Aquifer SystemSurface Water Groundwater Interaction
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