You are really making me miss my home state of Wisconsin.

Looking good on the property you have there. The pipe size may be an issue getting clogged but I will let the senior guys, Bill and Mike take the lead on that one. Concrete was a good call IMHO to prevent erosion. You just may have to watch it's heave the first few years with the frost set and thaw. Now is that the inlet to the overflow pond you were talking about raising some minnows in or is that the inlet to the main pond?