Water Gardening: turtles for my pond, 1 by woodspirit1

woodspirit1 wrote:
I have a small pond with koi and one goldfish. I also have a nice large, long piece of petrified wood that I am going to immerse at an angle, leaving part of it above water - a perfect place for some turtles.
Is there a small turtle that will live in a pond such as mine and will hibernate under the leaves and muck at the bottom of the pond in my zone 6b-7a climate?
I sure don't want a snapping turtle, lol.
If there is one, where can I buy them?
I have included a picture of my pond which I may have posted here before. It has a retaining wall on the right and is about the size of a small kitchen or large bathroom.