Let me burst your bubbles.
Residents in Lekki now have places in mainland where they retire to during rainy season to avoid the havoc caused by flood during the season. And most dwellers drive SUVs that would not be a threat to flood. That's Lagos for you.

The unfortunate truth is that most of the flood we experience in Lagos is man made. Developers now build houses on water routes on one hand and residents dispose wastes I'm drainages around the house.