The normal capacity of percolation tank is

7.0 mm/day

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7.87 mm/day

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5.87 mm/day

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0.87 mm/day

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Solution

The correct option is B 7.87 mm/day
Percolation tanks are the most prevalent structures as it is a measure to recharge the groundwater reservoir both in alluvial as well as hard rock formations.The size of percolation tank should be governed by percolation capacity of strata in the tank bed. Normally, the capacity of percolation tank is 7.87 mm/day.
So, the correct answer is option B.

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