Sorry about that......my watershed is small for my pond size (about .3 ac) and I still got a 9 inch rise from 2.75 inches of slow rain over three days. Still about 8 inches to go before I call it full, and about 16 inches to get barely to the emergency spillway. My runoff comes from a hay field that was last cut in late September. That last foot or so is hard to get because most ponds spread considerably as they near full capacity.