We closed our above ground pool end of Oct. ( 10 years ) we closed it the same way as always. We noticed the ground really wet on the backside area but we’ve had a ton of rain and it always takes a little longer for that area to dry up. We thought maybe the pool had a leak, but how is that possible? It’s winterized! Long story short. The pool is almost empty but this is the first dry day we could address it. We are draining the water off of the cover and are going to uncover it to see if we can find the problem. What would cause it to leak? No leaks all summer. What a mess. Any thoughts are welcome. ?