Ahmadu Bello University (ABU) Dam total storage capacity at the end of its impoundment was 2,600,000 m3 in the year 1974. It was about silting up, and was dredged in the year 2014/2015 using hydraulic suction dredger. Measurement of the depth was done to confirm the new storage capacity as 2,038,759.90 m3. Depth to water table from hand dug wells was also measured to determine the situation of the water table in the drainage basin after dredging. The highest value of the depth of water table in the drainage basin is 5.26 m at Yan Sarki, while the lowest value is 0.48 m at Tsauni. The values were used to plot groundwater configuration map, showing the direction of groundwater flow direction in the drainage basin. The groundwater configuration map shows that groundwater is recharging the streams that flow to the reservoir which terms the reservoir as effluent. A cross section line was drawn across the reservoir connecting three wells at Tsonfon Goruba, Ungwan maigamo and Samaru to inter relationship between the reservoir and the groundwater. The results show that groundwater recharges the reservoir as the peak of raining season which is normal in that drainage basin. Swan Line was gotten from the relationship between ground elevation and water table elevation which indicates that ground elevation is directly proportional to water table elevation.