Question: A 1 0 m thick confined sand layer has a hydraulic conductivity of 2 . 5 x 1 0 - 2 cm / s and

A 10 m thick confined sand layer has a hydraulic conductivity of 2.5 x 10-2 cm/s and a void ratio of 0.95. Two
wells have been placed in the sand layer 200 m apart measuring a total hydraulic head difference of 20 cm. How
much time would be required for water to travel 1 km through this aquifer?

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