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Nigeria, Oyo State, Ibadan

Hydrogeological mapping of Ibadan

Hydrogeology, geology and geophysics were used to study the groundwater potentials of Ibadan and its environs. These potentials include quantity, quality and availability of groundwater to the masses of the people. Due to the factor of affordability, hand dug wells are more in use than deep bore holes which are exclusively for the rich. \r\n\r\nRecords from 690 sample points such as wells, bore holes, streams and the results from ninety-three (93) analyzed water samples form the basis of conclusion and recommendations in this report.\r\n\r\nChemical analysis shows HCO3+CO3 dominated water with low to medium salinity hazard. Nitrate is too low there by allaying the fear of present level of contamination. \r\n\r\nIncident of groundwater contamination by leachates could be a problem in the immediate future because of indiscriminate dumping of solid wastes in unauthorized locations and river system. Lowering of groundwater level due to over extraction should be prevented with appropriate laws. The quality of water is fair as more than half of respondents claim they only use the water for domestic chores except drinking. Microbial contamination is average as most wells lack proper hygiene. \r\n\r\nContinuous monitoring and education is necessary to safe guard the groundwater resources of Ibadan and environs.\r\n

Inserted in the reports are the following maps (1:50,000): Location map, and Geological map.