Thanks for comments. It makes sense to lower the pond level down, to help capture koi and remove at least some muck sitting on top of rocks. My primary concern would be knowing whether or not pond would refill on its own? According to what we were told (always taken with a grain of salt), when pond was drained 15 yrs ago, it refilled on its own in 3 days. It would be quite a disaster if pond was drained, and it didn't refill. 500-600,000 gallons of water (by my estimate) is a lot!
Is there a reliable way one can tell if the reported underground spring is still active and it will refill naturally?
Last edited by NewYorkPond; 12/19/17 12:15 PM.
