The final highlight of Erika and my stroll on Monday to the Carleton College Arboretum was our encountering this soft-shelled turtle along the banks of the Cannon River. Separating Smooth Soft-shell Turtles from Spiny Soft-shells proves to be difficult. To identify them, you usually have to have the turtle in hand.
http://herpnet.net/Minnesota-Herpetology) shows Rice County oddly lacking records for either species. Certainly this hiatus is due to oversight. Erika and I previously have paddled by softshell turtles on the Cannon River.