This is unfortunately the only photo I manged to get of this turtle. It slipped into the water as I tried to get in a better position. It was about 15 ft out from the edge of the river (relatively slow moving) on a mat that had formed on the branches of a fallen tree. It seemed to be around 7-8 inches in length. With the shape of the head, the keeled shell and the patterning, I couldn't match it with any of the turtles native to this area. It seems somewhat reminiscent of a Map Turtle, but they aren't supposed to be anywhere near here (although they are sometimes kept as pets). I really wish I had gotten a better photo. I went back a couple of times looking for it, but had no luck. It'll probably turn out to be some odd looking Painted Turtle which are very common or a released pet. Any suggestions?