I'm no expert here but the drain tube you mentioned along with adding some additional freeboard my be in order. Sounds like you have a recurring potential for big inflows of water. A properly sized drain that can handle some or all of them before the water has a chance to cut through an emergency or high water overflow sounds like a very workable project.

I'm sure one of the other more knowledgeable guys will chime in. I'm looking forward to following this one.

1.5acre LMB, YP, BG, RES, GSH, Seasonal Tilapia
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