The mississippi is a very flat river, for the most part (at least on the carleton place to pakenham section, with only a couple sets of "major" rapids. Ice on the flats may be a good thing for blakney, because in my experience when spring flood is really going off, blakney is much too big (in my opinion). I prefer it at a medium flow, when the big trench like holes go away, but its still big and pushy.
Best bet would be to convince someone nearby to take a drive over the bridge and see....if i still lived in cp....might be out that way this weekend, I'll try to swing by, but no promises.
later
jer