Welcome aboard, Pondsea!
Man, what a natural topo for a pond (or...lake)!
I don't remember the exact numbers, but a dam at 25 feet high in my area was right at the height where it would require a structural engineer's design and annual inspection.
What would you have done if you had it to do again?
Pay attention to properly establishing good, permanent vegetation at the dam....immediately after the equipment is done and gone.
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ps; scale back your pix to 640 wide and the horizontal scroll won't be required for most of us (or maybe 700 max...I can't remember if 700 still fits)
