Bingo. The drainage pipe has to be sized according to the area that drains into the pond, not the amount of water that you are holding back. IIRC you have to plan for a "100 year" flood event. Your local NRCS office should be able to provide that information to you for no cost.


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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).