FWIW - Normally my ground water fed ponds are very shallow with an average depth of 4' and a max depth of 6'. With aeration, my fish have had no issue with surviving the long MN winters.
This year (record setting dry conditions in my area)is a whole different story. I have a max depth of 5' and almost zero moisture in the ground. If my depth stayed at 5' I would have no worries. Its the water loss thru evaporation into the dry winter air that concerns me. With little ground water there is no way for my ponds to replace the evaporated water.
As an inventor, I always want worst case conditions to test my designs. Well, I'm about to get what I want....How does that saying go about being careful what you wish for?
