(Solved): Below is given a multi-aquifer system. The aquifer is approximately \( 20 \mathrm{~km}^{2} \ ...

Below is given a multi-aquifer system. The aquifer is approximately \( 20 \mathrm{~km}^{2} \) in lateral extent and is bounded on the sides by very low hydraulic conductivity shale bedrock. The thickness of each sedimentary layer is approximately constant throughout. The grey areas indicate the screened interval for each well. Assume flow in the aquifers is horizontal and flow in the clay aquitard is vertical (up or down) a. Determine the hydraulic head values and record in the table shown below. Assume flow in both aquifers is horizontal and flow in the clay layer (if any) is vertical. b. Calculate the vertical hydraulic gradient through the clay layer and indicate the direction of flow (up, down or no flow). c. If the hydraulic head, h, in the lower aquifer decreases by \( 20 \mathrm{~m} \) due to pumping, how much water (in \( \mathrm{m}^{3} \) ) would be released from storage?