Wow, that sounds high. My 2 acre pond 12 foot deep cost 12,000$. Started from scratch. Clearing pine sapling thicket and no creek. No dirt hauled in or out from my property. You may not need watershed from all 3 sides. Once you reach pool it's just going out the spillway anyway. Just my 2 cents worth.

Dear Alcohol, We had a deal where you would make me funnier, smarter, and a better dancer... I saw the video... We need to talk.