I'm skeptical about their ability to accurately determine what a 100-year flood is, given that there have been so many conflicting reports about what this last flood is. In regards to the Bow, I've heard this estimated as everything from a 50-year to a 100-year flood. It also seems that this sort of estimation changes based on actual floods. So what might be a 100-year flood now might be re-estimated to be a 50-year flood based on the next few years of weather patterns.
Using Sunnyside as an example, at what point are we looking at water actually coming over the berm? Is that a 60-year flood, a 100-year flood, or a 500-year flood? I feel like that's pretty-much the only way that my house is going to get overland flooding, and I'm not sure how we'd mitigate against that sort of event.
The minister does reference community-level flood mitigation measures, and I think that's pretty-much the only way you could do anything useful. If water comes over the berm for any significant amount of time, most of Sunnyside is going under.
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