I know this subject has been covered before.....I'm thinking about drilling a water well to keep my pond topped off. The last 3 years it has varied from 1-5 feet of the fill point. It was built to be 13 acres and now is 4 feet down and aproxiamtely 8 acres.......I really need to know what kind of flow rate range I'll need to do the job assuming there is no leaks in the dam...East Texas...thanks.