Please go to maps.ottawa.ca. It's extremely, extremely useful for property purchasing.
Select the "Topography" layer so you can see the "Deng Gao Xian" on your map. You will find that Acadia houses are around 100 meters above sea level, much higher than the carp river nearby, AND higher than Terry Fox drive.
You probably will feel standing on a highland if you look towards Terry Fox drive from Uniform`s townhouses in RR, eh?. But in reality they are below 100 meters above sea level.
That`s why I don`t think Acadia will ever get flooded, although its base soil might not be as firm as RR`s rocks.