Personally, I'd pick the lowest point of property possible to take advantage of any runoff. Energy is only going to get more and more expensive. I'd try to take advantage of every opportunity that Mother Nature offers you with help in filling and keeping the pond full of water.

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3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).