Or it could do like my river. It freezes here by town so hard you can drive an 18 wheeler on it without fear of falling in. Go up the river farther towards Rainy Lake and it is open almost always in the winter. I does not matter if it gets 40 below for a week there will be part up at the head that is open. The colder it gets the less that is open, but some of it will be. So in otherwords, I disagree. Not sure who with or what, unless you agree, then I disagree with that, or maybe not. Wait I disagree with what I just said, no wait....what did you say?