Monitoring of Groundwater Recharge for Flood Management
Department of Geography and Environmental Management
Tai Solarin University of Education, Ijebu Ode, Ogun State, Nigeria
Martins O. and Idowu O. A.
Department of Water Resources Management and Agrometeorology
Federal University of Agriculture, Abeokuta, Nigeria.
This paper proposes regular groundwater recharge estimation as a viable process capable of revealing possible
occurrences of flooding in drainage basins for emergency actions and future water planning. Flooding is often
monitored by considering the surface water flow/stream flow level. However, changes in groundwater levels
can be a source of flood forecasting information. We inferred from results obtained from hydrograph
separation and water table fluctuations methods carried out from stream flow and twenty (20) groundwater
level monitoring in Ogun River basin that regular estimation of groundwater recharges in the basin area can
assist in establishing the peaks of fluctuations, which can be a vital flood prevention mechanism.
Key words: Groundwater recharge, flood management, hydrograph separation, water table fluctuations, Ogun River basin
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