I need your ​expert ​suggestions for ​calculating ​groundwater ​recharge over a ​set period. ​ ​

In the ​project area, ​we have a pond ​managed by the ​community and ​the primary ​objective of ​this pond is to ​help ​ground water ​recharge. ​

In this case, ​how do we ​calculate ​the amount ​of water ​recharged into ​the ground for ​a particular ​year? ​
We have the ​yearly rainfall ​data and ​topographic ​details of the ​catchment. What ​is the best way ​to estimate ​groundwater ​recharge in ​this case? ​

Also, how can ​we estimate ​ground water ​recharge when ​artificial ​recharge ​techniques are ​adopted?

Posted originally on The Water Network: bit.ly/2calveu - please join and discuss.