re: Pond advice

quote:

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If it's just the one tree, he could remove that and the dam will likely last a very very long time as the pine stumps and roots rot very very slowly. They'll practically fossilize before they completely rot away.

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I was going off my experience. I had to recore the dam on our 2.5 acre pond about 5 years ago. It had trees on it from years of neglect and was leaking. We pulled the trees off with the excavator and got the roots out. We then repaired it where the trees had been. I used clay and Bentonite .
I guess I should have clarified what I meant about reconstructing the dam. I meant to remove trees, and recore in areas where roots are. The water will find the weak spot and follow the roots. Your mileage may vary.