I guess technically I have one pond that's about 7 or 8 acres. Since a big chunk of it is two feet deep and cattails I say I have two ponds, one on each end of the cattails. One is about an acre the other about 2 1/4 acres. The whole system is fed by spring seeps and an artesian well. There is an area about 15 feet in diameter that's open water right now over the well, the rest is frozen over. I actually did measure 16"s of ice. And yes I am so jealous of you open water people!