My watershed is supposed to be 240acres but I doubt that is right.. all woods and sand. Anyway I put in 2/24” culverts for the spillway. It’s only been used 2-3 times in almost 10 years. We don’t get the rain here for some reason. A 2” rain won’t add much to pond due to no runoff even with a large watershed
Better off to have it and never need it.
