Evaluating Groundwater Potential and Hydrogeological Environment

Krasny's classification scheme for Transmissivity magnitude and variation was used to identify the ground water supply potential and the nature of the hydrogeological environment of the study Area. Spatial variation of transmissivity values were analysed using Statistical testing and Krasny's classification systems; from the results of the statistical testing; 16.67% of the eighteen vertical electrical sounding points in the study area had transmissivity index in the class of negative anomalies (withdrawals for local water supply with limited consumption) with a range of between 6.418 and 5.887 with groundwater potential rated as very low. 61.11% of the sounding points were in the class of Background anomalies (smaller withdrawals for local water supply and for private consumption) with transmissivity index range of between 6.418 and 7.479 with groundwater supply potential rated as low. 22.2% of the sounding points were in the class of positive anomalies (withdrawals of lesser regional importance) with transmissivity index range of between 7.479 and 8.009 with groundwater potential rated as moderate. The standard deviation value of 0.53 in the transmissivity index (Y) represents a moderate transmissivity variation and characterized the study area as a fairly heterogeneous hydrogeological environment. From the results of Krasny's classification system; 5.56% of the sounding points were in the class of intermediate or moderate transmissivity magnitude with groundwater potential expressed as withdrawals for local water supply for small communities and plants. Most of the sounding points (94.4%) were in the class of High transmissivity magnitude with groundwater potential expressed as withdrawals of lesser regional importance