my pond is like 3.5 feet in the shallow and 5 feet in the deep part. I know that can seem shallow but I live in like an hour from Seattle, WA and it never really freezes here, in fact most pond owners here never turn off their pumps in the winter. This weekend I just planted in the pond like 6 water hawthorns, a lily, two species of Iris and some rush. Oh and I dropped four bunches of hornwart in the pond. all of my pond sides are verticle except for one wall of the pond has a ledge about 18 inches under water that juts out just far enough to set some fower pots.