Tens of thousands of people have been forced out of their homes in Calgary, where rising waters have officials on alert. CBC's Cameron MacIntosh surveys the flood zone from above, bringing us video and photos of the damage.
See the Calgary floodwaters from above
Helicopter view shows extent of flood disaster
CBC News Posted: Jun 21, 2013 10:44 PM ET Last Updated: Jun 21, 2013 10:58 PM ET