Dear Amit Ji, There ...

Dear Amit Ji,

There might be different views by different experts, what I feel that It can be slightly not easy task to calculate an exact amount.

Still an Increase in groundwater table than earlier, could be one sing that it is getting recharge in that area. But if you put some simple calculations, then using average rain fall, water holding capacity of the designed pond and the rate of percolation of the pond water (this can be calculated by analysing soil for some specific parameters) to the groundwater table. This all might helpful to calculate total of recharged water. Also keeping track of water table for some interval, it will also help to monitor groundwater recharge quantity.