We had a freeze last month where I live. I had kept the pool equipment running to minimize the amount of standing water that I had and hopefully minimize any damage that might occur. Since then, my pool has started leaking at the rate of about 1/4" of water per day. It leaks by about the same amount whether I'm running the pool equipment or not. So I don't think it's anything in the pool equipment causing the leak. There are no obvious leaks above ground. Any pointers for identifying where the leak is without digging up everything?