Radially heterogeneous aquifer
✓the aquifer horizontally comprises two zones with different hydraulic parameters and with a common circular boundary;
✓the pumping well is located in the center of the circular zone (wellbore zone), surrounded by the main zone;
✓the observation well is located in the main or wellbore zone;
✓the wellbore storage is taken into account in the drawdown estimation.
Radially heterogeneous aquifer: cross-section and plan view
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