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Challenges 2015, 6(2), 271-281; doi:10.3390/challe6020271

Estimation of Groundwater Recharges in Odeda Local Government Area, Ogun State, Nigeria using Empirical Formulae

1
Department of Physics, Federal University of Agriculture, Abeokuta 110001, Nigeria
2
Department of Water Resources Management and Agrometeorology, Federal University of Agriculture, Abeokuta 110124, Nigeria
*
Author to whom correspondence should be addressed.
Academic Editor: Palmiro Poltronieri
Received: 31 August 2015 / Revised: 1 October 2015 / Accepted: 9 October 2015 / Published: 27 November 2015
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Abstract

Estimation and forecast of groundwater recharge and capacities of aquifers are essential issues in water resource investigation. In the current research, groundwater recharge and the recharge coefficient were determined through a case study using empirical methods applicable to the tropical zones. The related climatological data between January 1983 and December 2014 were collected from Ogun-Oshun River Basin Development Authority (OORBDA), Ogun State, Nigeria. Using empirical formulae. The results showed that groundwater recharge was 194.7 mm per year, evapotranspiration was 1296.2 mm per year, and the recharge coefficient was 20.2% for the study area. The result also showed that about 11% of rainfall infiltrated the aquifer, 73% was lost to evapotranspiration, and 16% ended up as run-off. Correlation between climatic parameters and groundwater recharge showed the highest correlation between recharge and rainfall. Temperature, humidity, solar radiation and evapotranspiraton were obtained at the 0.01 significance level; the results of linear regressions proved that precipitation has a significant effect (with R2 = 0.983) on estimated recharge. View Full-Text
Keywords: aquifer; evapotranspiration; groundwater recharge; recharge coefficient aquifer; evapotranspiration; groundwater recharge; recharge coefficient
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Adeleke, O.O.; Makinde, V.; Eruola, A.O.; Dada, O.F.; Ojo, A.O.; Aluko, T.J. Estimation of Groundwater Recharges in Odeda Local Government Area, Ogun State, Nigeria using Empirical Formulae. Challenges 2015, 6, 271-281.

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