Give buildings a ‘watertight mode’.Selected doors would be replaced with equivalents that included a one-time-use inflatable watertight seal could be deployed around them using compressed air. To deal with windows and drains each building would keep in storage an insert with a similar function (ie. a one time use ‘plug’ that was enabled using compressed air).When a flood became inevitable building owners would repeat the insert and inflate process as required until their building was watertight. Given the frequency of floods the cost of replacing the doors and window/drain inserts after each use would acceptable.

