Question

The depth of the percolation tank is limited to the .......... of the height between bed level and full storage level.

• A. Half
• B. One fourth
• C. One third
• D. Same

Answer 1

The correct option is B One fourth

Percolation tank is an artificially created surface water body, submerging in its reservoir a highly permeable land so that surface runoff is made to percolate and recharge the ground water storage. The size of percolation tank should be governed by percolation capacity of strata in the tank bed and the cut-off trench is to be provided below the earthen bund with depth limited to one-fourth of the height between bed level and full storage level.

So, the correct answer is option B.