The only reason why I don't recommend culverts is that they make great catfish spawning habitat and that doesn't align with most pond owners goals. The culverts in 10'-14' water probably won't be utilized in the summer unless you have bottom aeration due to low O2 levels that deep in un aerated ponds.

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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).