Interesting. So, as the property owner in that situation, would you make a point of having words with anyone wading up the creek?
It would seem to me, (if I were such a property owner) that there is no greater threat to my property or security whether stream users were floating up or wading up. I think regardless of what my lease said about the creek bottom, I’d just ignore it and treat it like public access. If there’s enough water to float a canoe, I’d rather people be free to step out and pull it past rocks and roots, etc. without taking additional risks staying in the boat cuz they’re scared of getting dinged for trespassing if the touch the bottom.
I think your wading interpretation is wrong. Regardless of the streambed "ownership", the right to access falls under the Navigable Waters Act, with the intention of "navigating" those waters by actually riding the "surface" in some sort of watercraft. So you would actually have to be able to "float and navigate" a watercraft (kayak, canoe etc...). My interpretation would be that without the "watercraft" you are trespassing.