Pond Boss Forums POND CONSTRUCTION Building a dam spillway ??

Right before i got on this site i had a buddy with a spillway in the middle of the damn. We got 5 inches of rain in about 3 hrs one night, the next day he calls me and ask to use my bobcat. I was like whats up he said my damn washed out last night. So i headed over there. When i got there, litterally the whole lake was being held in by about 2' of clay and on the back of the dam was a washed straight down 15-20 dropoff with about a 20 foot round hole full of water. He says lets fill this hole in with your bobcat. I said we better get off this damn cause it could go at any minute. He hired the local dirt man (pond builder also) he filled it in and moved the spillway to the far side of the damn. I would say another inch or couple more hours of heavy draining his whole lake would have been gone.. It was wild how deep and cut out it was and what little wall of dirt was holding in the hole lake there was water just seeping through this thin wall into that pool it had created behind the dam.. Now its fixed and works perfect..