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Groundwater Recharge Assessment in Central Benin: The Case of the Collines Region (West Africa)
The objective of this study was to assess groundwater recharge in the hard-rock central region of Benin so as to compare it with the water needs of the local population. To reach this objective, we applied the Water Table Fluctuation (WTF) method, which requires long-term monitoring of groundwater level fluctuations. Groundwater level time series were used in combination with other data (including time series of surface water discharge and rainfall) to estimate groundwater recharge but also to shed further light on the relationship between surface water and groundwater. The results demonstrated that the minimum inter-annual groundwater recharge amount is about 1.09 × 109 m3, which is enough to cover the basic water needs of the local population. It should be highlighted that in sub-regions where the density of the population is high, water shortage can still occur with the above estimated groundwater recharge amount. This study has also illustrated that when applying the WTF method, sites with a highly uncertain specific yield can be detected.
Groundwater Recharge Assessment in Central Benin: The Case of the Collines Region (West Africa)
The objective of this study was to assess groundwater recharge in the hard-rock central region of Benin so as to compare it with the water needs of the local population. To reach this objective, we applied the Water Table Fluctuation (WTF) method, which requires long-term monitoring of groundwater level fluctuations. Groundwater level time series were used in combination with other data (including time series of surface water discharge and rainfall) to estimate groundwater recharge but also to shed further light on the relationship between surface water and groundwater. The results demonstrated that the minimum inter-annual groundwater recharge amount is about 1.09 × 109 m3, which is enough to cover the basic water needs of the local population. It should be highlighted that in sub-regions where the density of the population is high, water shortage can still occur with the above estimated groundwater recharge amount. This study has also illustrated that when applying the WTF method, sites with a highly uncertain specific yield can be detected.
Groundwater Recharge Assessment in Central Benin: The Case of the Collines Region (West Africa)
Kodjo Apelete Raoul Kpegli (author) / Firmin Adandedji (author) / Cintia Ahouandogbo (author) / Metogbe Belfrid Djihouessi (author) / Jean Hounkpe (author) / Yèkambèssoun N’Tcha M’Po (author) / Aymar Yaovi Bossa (author) / Abdoukarim Alassane (author) / Luc Olivier Sintondji (author) / Daouda Mama (author)
2024
Article (Journal)
Electronic Resource
Unknown
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