FishinRod, glad to support your idea. The drainage ditch collects runoff from about 25 acres and can really get running in a big storm. I took some of my inspiration from "rice gates." The lateral extension in the front make the structure more stable and prevent flow around the sides, akin to the baffles you put on conduit under a dam. I was wondering if adding an extension downward might eliminate any remaining issues with clay and stability.
