I second what quarter acre says, a pic would be nice. sounds like you have a straight pipe thru the dam instead of a traditional L shaped stand pipe, right? when this event is over, i would recommend lowering the emergency spillway. I've always heard the e-spillway should be 1 foot higher than full pool and top of the dam should be 2ft higher than e spillway. 6 inches in 3 days isn't unheard of, it will happen again for sure.


Scott Hanners