I think you need to provide a ...

I think you need to provide a lot more details. If you discharge straight onto permeable ground them it depends on the nature and direction of the fissures where rain water eventually lands up. A better solution might be to calculate the amount of water you need and by using pipelines divert the flow from streams etc directly to a storage reservoir from which water is eventually abstracted,treated and put into supply. The rainwater could therefore be left to naturally charge the strata. This idea however is based purely on speculation in the  absence of mote definite details. good luck