IMO there are times when your best path is to call in a pro. I would get in touch with Bob L. or Mike Otto and ask for a referral to a good pond engineer. I agree with John F. That is a massive amount of water. Providing a robust solution will possibly require modeling, soil analysis, topography info, etc. not to mention some pretty intensive math.

Last edited by Bill D.; 11/28/17 08:22 PM.
[Linked Image]
Be Brave Enough to Suck at Something New!