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A 250mm diameter well in an unconfined aquifer is pumped at a uniform rate of 3000 V minute. The drawdowns observed at 1m and 100m

A 250mm diameter well in an unconfined aquifer is pumped at a uniform rate of 3000 V minute. The drawdowns observed at 1m and 100m distances from the centre of the well are 8m and 0.4m, respectively. Determine the hydraulic conductivity of the water-bearing strata, assuming the thickness of the saturated part of the aquifer is 25m.

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