Here is what the city required sandbagged in 2011
http://winnipeg.ca/emergweb/2011Flood/pdfs/SandbagLocations110330.pdf
And at this time here is the initial sandbagging plan for 2013 (which will change as the river lever is better known)
http://www.winnipeg.ca/emergweb/2013Flood/pdfs/2013sandbagLocations.pdf
There is no information available for 2012 so I can't post any map for sandbag locations.