Here in Northern Indiana in 2008 we had the remenants of Hurricane Ike roll thru. 12" of rain in 24 hrs........
Now think about if you have a 10:1 ratio. That pond would see 7 times (or more) of the surface acreage in water. 10:1, one acre pond, worst case scenario could see enough water coming into the pond to raise it 10 feet in that 24 hr period. Make sure the emergency overflow is sized properly!!!
