On the same note, I've watched mine closely after closing the valve and have some numbers to consider. My watershed is about 15 acres according to the topo map. All of it is wooded save an acre or so of small food plots. Last weekend I calculated that my pond recieved an est influx of about 60,000 gallons of water out of about 305,000 that fell on the 15 acres as rain. This is almost 20% which I thought was pretty good. I guess it all has to do with the rain rate and what the ground conditions are before the rain sets in.
