One of the (many) blessings related to the site we selected to build the pond was a perfect location for an emergency spillway. Our principal spillway pipe is 18" and the drainage is only around 60 ac, so that in of itself minimizes extremes. If the water should get 6" above the top of the principal, the ponds spills out 700 feet away from the dam (at the opposite end of the pond) and drains away to a completely different run-off. At this point, we still have another 24" min of dam.
