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Communication incl. Poster: BibTeX citation key:  Issoufou
Issoufou, O., Sambou, S. & Tamba, S. 2009. Interaction between groundwater and surface water in coastal areas: strategy definitions against flooding in the suburbs of Dakar. Work presented at Third International AMMA Conference, July 20—24, at Ouagadougou, Burkina Faso.
Added by: roussot 2009-11-05 09:24:42
Categories: Society-Environment-Climate interactions
Keywords: Water - Energy - Resources
Creators: Issoufou, Sambou, Tamba
Publisher: African Monsoon Multidisciplinary Analyses (Ouagadougou, Burkina Faso)
Collection: Third International AMMA Conference

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Another consequence of climate change and decreasing of rainfall is decrease of water table. In the suburbs of Dakar, this has been accompanied by a change in land use and soil occupation: initially resurgence zones of aquifer has been used by people as habitations. With climate variability apparition, random succession of deficit and excess periods of rain are notified. So, recharge of aquifer may result in flooding for the excess years.
In this work, we first describe and characterize the aquifer system. We then calibrate and validate Modflow groundwater model, and use it to simulate the hydrodynamical behaviour of the aquifer due to rain. Then, we link the DNM of the zone of study, to the water table fluctuation to predict the evolution of aquifer level in the resurgence zones. The first results we get are satisfactory.
The third step will be to force the Modflow groundwater model by outputs of climate models in an early warning system.
Added by: roussot