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Groundwater Resources of the Transboundary Quaternary Aquifer of the Lake Chad Basin: Towards a Better Management via Isotope Hydrology

Authors :
Fricelle Song
Bertil Nlend
Suzanne Ngo Boum-Nkot
Frederic Huneau
Gustave Nkoue Ndondo
Emilie Garel
Thomas Leydier
Helene Celle
Boris Djieugoue
Marie-Joseph Ntamak-Nida
Jacques Etame
Source :
Resources, Vol 12, Iss 12, p 138 (2023)
Publication Year :
2023
Publisher :
MDPI AG, 2023.

Abstract

A multi-tracer approach has been implemented in the southwestern part of the Lake Chad Basin to depict the functioning of aquifers in terms of recharge, relationship with surface water bodies, flow paths and contamination. The results are of interest for sustainable water management in the region. The multi-layered structure of the regional aquifer was highlighted with shallower and intermediate to deep flow paths. The shallower aquifer is recharged with rainwater and interconnected with surface water. The groundwater chemistry indicates geogenic influences in addition to a strong anthropogenic fingerprint. The intermediate to deep aquifer shows a longer residence time of groundwater, less connection with the surface and no to only a little anthropogenic influence. Ambient Background Levels (ABLs) and Threshold Values (TVs) show the qualitative status of the groundwater bodies and provide helpful information for water resources protection and the implementation of new directives for efficient and more sustainable groundwater exploitation.

Details

Language :
English
ISSN :
12120138 and 20799276
Volume :
12
Issue :
12
Database :
Directory of Open Access Journals
Journal :
Resources
Publication Type :
Academic Journal
Accession number :
edsdoj.1d7130b9655b418389e87173d90dc32f
Document Type :
article
Full Text :
https://doi.org/10.3390/resources12120138