DETERMINATION OF AQUIFER THICKNESS BY PARTIALLY PENETRATING WELL.

The authors had a chance to analyze in-situ pumping test data obtained by partially penetrating wells. But the application of the conventional type curve method showed that the calculated thickness of confined aquifer was much larger than the measured one. Then a more efficient and practical method for estimating the thickness and the hydraulic parameters was derived from the unsteady state solution for the drawdown of groundwater head around a partially penetrating well into a confined aquifer. The in-situ pumping test data and simulated results for the partially penetrating well were analyzed by means of this proposed method. From these analyses, it is shown that the calculated thickness and the hydraulic parameters had a good agreement with the measured ones.