We've gone around the edges the last couple of times and hauled in good clay dirt with a dirt [pan and tracked it in with a bulldozer. We also dug a core ditch on each side in the areas we thought might be leaking.
I was really surprised to see the water tricking out just behind the dam, and to see the layer of blue mud where it came from.
The one thing that stands out now is that the lowest point behind the dam....where the old creek ran....has always been soggy. I never saw water moving, and since it was in the old creek bed I thought it was naturally soggy like that. But now I'm beginning to think that somehow water is seeping down in the lake bed and getting to the old creek bed and running under the dam.
Does adding a core ditch to the backside usually work, and is that a procedure that is used on lakes that have a history of leaking, and especially when the base of the back side ofhte dam is always soggy?
