The news reported 10", but I believe we got more in our area. Plus, that was just for Tuesday. We've had non stop rain since Saturday.
The normal waterline for my pool is about 6" below the coping. The water was flowing over the top for 2 straight days and that doesn't include what was going out the overflow drain, which is a 1" inch pipe that sits above the waterline. In heavy rain, our pool also gets runoff from the roof, I have an 8" wide super getter there, but in torrential rains, the water fills up the gutter and spills over.
All i I can telll you is that last Friday, the pool had 3200ppm of salt. One Tuesday afternoon I measured it and it was at 2490 and today one test read 1750, another about 1810 and the pool store measured it at 1760