Sounds like all ponds have their own personalities. My pond is over 2 years old and It has never filled to the overflow outlet. I have piped roof downspouts into it
and have a deep well pump that pumps about 10 gal/min for 25 min each hour. I have talked with teejay regarding Soil Floc but understand it works best under at least a 4 foot head... which I don't have right now. Soooo, holding off on that treatment for now.

I'm still looking for that blankety blank leak (s).