Thank you for the question.
The state of flood mapping across Canada is not an ideal one. As I mentioned earlier, probably half of households that are at high risk of flooding in Canada are not on a flood map anywhere, so they have no way of knowing about their risk. Municipalities are often left to develop that information on their own. When development comes up and there are time pressures and political pressures associated with moving that development forward, often the mapping can't get done fast enough.
Ontario is lucky to have instituted conservation authorities, which do a lot of that work. Other provinces don't have them. Even in Ontario, conservation authorities often lack resources to be able to keep mapping up to date.
Mapping across the country is generally obsolete. The average age of flood mapping in the country is over 20 years. Essentially, 0% of flood mapping reflects the changing risk of flooding from climate change; it simply reflects historic risk.