FishinRod, Thank you very much for answering my question.

The main purpose of my siphon is to regulate the water level. It would rise 4' to the crest of the pipe before falling 5' to the outlet. Maybe 6 or 7' now that I know the water level of the big creek will not disturb the outlet.

I have an artesian well that flows about 10 gallons per minute that I will pipe into the pond. My understanding is that artesian water has no dissolved oxygen so I am thinking to also pipe in some water from a small creek that I think would be highly oxygenated.

I have a sump pump that I used for pumping out the spring water while I was digging. That would definitely pump out the bottom water but I don't know how much that would raise my power bill each month.

kevin b