I opened my pool today and got everything started. After pulling the cover off the pool the water level was high (just about top of skimmers). After about 45 minutes of the pool running I noticed the water level was about 1.5/2 inches lower. Then I noticed a portion of my lawn which is a low spot was filling with water. After shutting off the equipment and with the water level lowering so fast my best guess was that the plumbing is busted underground. The pool was plugged and the skimmers sealed the whole winter and as I said the water level upon opening was very high. Once it was running we started seeing all the water flowing into the yard. I am asking if anyone has any other ideas or troubleshooting methods to try to pinpoint location or area of plumbing such as supply side or return side. If you need more info to be helpful just let me know and I'll try to get what you need. Thanks!