The storativity of a confined aquifer is found to be 6.8 x 10-4 as a result of a pumping test. The thickness of the aquifer is about 50m and the porosity is about 0.25 .
a) What percent (fraction) of the storativity is contributed by the expansion of the water ?
b) What percent (fraction) of the storativity is contributed by the compressibility of the aquifer porous media.?
c) If the piezometric surface is lowered about 5 meters over an area of about 1 square kilometer, how much water will have been pumped from this aquifer?