Rise above it all, if possible.
100-Year Flood: Not one that occurs once every 100 years, but to a flood severity level with a one percent chance of happening in any given year.
100-Year Flood: The level of flood water expected to be equaled or exceeded every 100 years on average. More accurately, the 1% annual exceedance probability flood, meaning that it has a 1% chance of being equaled or exceeded in any single year. Try picking your years carefully then.