Hi,
Please help! I'm starting to repair a 40 year old, 1.5 to 2 acre washed out pond. The cause of the washout is undetermined, could be from water overflow or trees by the overflow pipe. The water shed is around 100-120 acres with 30 in. of annual rainfall.

My dilemma is the dam has 30+ trees along its entire distance. Do I remove them and take the dam down to the core. OR should I just repair the washout by the overflow pipe? I'm concerned that if I just remove the trees, their deep roots will rot out and cause a continious leak.

Your advice would be greatly appreciated.
Merry Christmas,
Mark