Booger,
Do you have Muskrats in Al.? Sounds exactly like the problems I have from the darn digging critters. They love to dig and tunnel in dam's. I've tried to fill the holes with clay but it nevers seems to dry out so I added another layer to the top of the dam and the backside.
And I "relocated" all existing 'rats but they reappear from time to time. Constant battle but .22 Mag shells are cheap.
Is there a possibility that the dam was not packed properly when it was built?
Dan
