What is the change in storage of aquifer

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Problem: In an aquifer extending over 150 Ha, the water table was 20 m below ground level. Over a period of time the water table dropped to 23 m below ground level. If the porosity of aquifer is 0.4 and the specific retention is 0.15, what is the change in storage of aquifer. Please answer the following question.

Reference no: EM132416215

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