This hurricane season has shown that our cities are poorly designed for heavy rainfall. Many cities are taking climate change seriously and are redesigning their cities to accommodate these extreme weather events.
Flooding is not just a hazard; it's also a waste. Typically all that fresh rainwater gets poured into storm drains instead of recharging aquifers or in the case of Chicago, Lake Michigan. When it rains there, less than 1% goes back to the lake. Instead it gets exported toward the Mississippi River, causing increasing flooding in other communities.
Here's an article about what creative solutions cities are pursuing to make them more like sponges and less like Saran Wrapped soil.
What would an entirely flood-proof city look like? - the guardian