The only expected Mustelids here are Long-tailed and Short-tailed Weasels, and Mink. These tracks are certainly too big for the weasel and to me, seem too big for an American Mink.
In the end I've come to the conclusion these are the tracks of a large male mink.
What would create these channels? Muskrats? One photo shows tracks in the mud.
Muskrat tracks walking down the trail at Kehoe. Not a common observation in this area. Could use more ID’s.