No idea. For most of the trip, the water was withing a paddle blade or two for depth, with gravel bars all over the place, but I suppose that doesn't mean that such holes can't exist. The two fish that swam by the canoes, and the dead one we found along the banks, didn't look like either species to me. I should have taken a picture... it's also possible that the ND GF Dept. surveyed the river where it meets the Missouri, in which case finding cats and sauger wouldn't be too surprising.

There was a guy that looked like he was fishing near the bridge in Medora, but he was upstream and we were in a hurry, so we didn't get the chance to inquire. I'll see if any of the other guys snapped a pic of the dead one...