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Knowledge of aquifer characteristics is essential for groundwater development and management studies. Detailed hydrological studies were carried out in a granitic terrain consisting of different geomorphologic units to resolve the coverage, performance, and characteristics of the aquifer parameters through the application of the pumping test method. An interpretation was performed by different methods, viz., Theis, Jacob, Hantush, and Rushton and Redshaw (numerical finite difference method) to ascertain the aquifer parameters. These parameters are vital for future groundwater development and management studies. Transmissivity ( T ) values estimated by Theis method range from 3.83 to 436 m 2 /day; 3.77 to 718 m 2 /day; and 16 to 160 m 2 /day, by Jacob method it ranges from 3.90 to 436 m 2 /day; 3.73 to 769 m 2 /day; and 17.3 to 152 m 2 /day, by Hantush method it ranges from 1.63 to 189 m 2 /day; 0.53 to 755 m 2 /day; and 19.3 to 118 m 2 /day, while by numerical method it ranges from 3 to 455 m 2 /day, 3 to 700 m 2 /day, and 17 to 148 m 2 /day in pediplain with moderate weathering (PPM), pediplain with shallow weathering (PPS), and buried pediplain with shallow weathering (BPPS) geomorphologic units, respectively. Similarly, a radius of influences ranges from 9.75 to 1391.0 m; 8.0 to 698.09 m, and 380.78 to 433.76 m in PPS, PPM, and BPPS geomorphologic units, respectively. The aquifer parameters obtained by the pumping tests were correlated with the structural features and different geomorphologic units. It was found that these parameters have wide variations within each geomorphologic feature. The radius of influence of each test well was calculated and compared with the in situ measured discharge of various wells within the area. The high values of transmissivity ( T ) are attributed to aquifer controlled by fractured zone in the area.

Distribution of aquifer characteristics in different geomorphologic units in a granitic terrain