The run in Calgary is easily doable. Last time down it was 'normal' level, yet someone had managed to wrap a canoe around one of the bridge pillars.
Tomorrow would seem to be the best day to get out, given the weather. I'd like to join you but, with work and the family it is difficult to get out, so I'll have to pass.
Consider trying to rent from the Bow waters canoe club, you may have to do some fast talking to rent as you are supposed to be a member. However since you are from out of town I expect they'd get you a canoe. The club house is just below the weir, on the irigation cannel and about 17th street. you could canoe almost right there. with a portage accross the deerfoot trail using the 17th st bridge. That my make the arangements slightly easier. you may even get someone to go with you.
There is a club trip planned for Thursday, I do not know where though. (I forget my log on to the members forum so I can't find out). check out
http://www.bowwaters.org some where there in is contact info in there some where.
Bragg creek not quite an hours drive out west from Calgary, West and then south. A small village in the foothills.
If you are stuck for logistics, consider a tool around on the Glenmore resevour, the weasle head flats are slightly interesting, and you can take the canoe a bit up stream. The bonus is Calgary canoe club is right on the lake (west side), and I think you can rent there. It is kind of a poor second choice, but better than staying in a hotel room watching tv.
good luck