Articles | Volume 59
20 Dec 2022
 | 20 Dec 2022

Modelling of groundwater recharge in the megacity of Lagos, Nigeria: preliminary results using WetSpass-M

Oluwaseun Franklin Olabode and Jean-Christophe Comte

Cited articles

Abdollahi, K., Bashir, I., Verbeiren, B., Harouna, M. R., Van Griensven, A., Huysmans, M., and Batelaan, O.: A distributed monthly water balance model: formulation and application on Black Volta Basin, Environ. Earth Sci., 76, 198,, 2017 (code available at:, last access: 13 December 2022). 
Adiat, K. A. N.: Application of Geophysical Borehole Logs For Aquifer Characterization in Coastal Environment of Lagos, Southwestern Nigeria, Niger. J. Basic Appl. Sci., 26, 31–45,, 2019. 
Ajani, G. E., Popoola, S. O., and Oyatola, O. O.: Evaluation of the Pollution Status of Lagos Coastal Waters and Sediments, using Physicochemical Characteristics, Contamination Factor, Nemerow Pollution Index, Ecological Risk and Potential Ecological Risk Index, Int. J. Environ. Clim. Chang., 13, 1–16,, 2021. 
Akoteyon, I. S., Balogun, I. I., and Soneye, A. S. O.: Integrated approaches to groundwater quality assessment and hydrochemical processes in Lagos, Nigeria, Appl. Water Sci., 8, 1–19,, 2018. 
Ayolabi, E. A., Folorunso, A. F., Odukoya, A. M., and Adeniran, A. E.: Mapping saline water intrusion into the coastal aquifer with geophysical and geochemical techniques: The University of Lagos campus case (Nigeria), Springerplus, 2, 1–14,, 2013. 
Short summary
The processes which dictate replenishment of coastal aquifer systems under demographic pressures in a fast-growing megacity, Lagos, Nigeria are yet to be quantified and understood. The recharge estimates and trends provided from this study show that over the last two decades, water demand has overtaken the recharge rate over the urban agglomeration and is now rapidly converging towards the total aquifer recharge rate.