Thanks. Are you saying that the earthen spillway if correctly sized could handle routine outflow and flood discharge, and then a siphon is in place only if I'd need to drain it for maintenance or emergency?
Also, if the pond has is 50 years old and was never dug out, is it almost guaranteed to be silted up? The pond edges are not choked with weeds, cattails or growth beyond what you see in pics. Summertime satellite photos dont shown algae blooms whereas other ponds do.
[img:left]
https://photos.app.goo.gl/AsFrsefPnUtNZQJW8[/img]
