Los Angeles is an unlikely champion of a new wave of water savvy urban planning. A city most of us think of as all about cars and concrete has introduced more permeable surfaces to soak up water rather than turning it into run off. The change has been so successful that not only was severe flooding avoided during recent extreme rainfall but it will help solve the city’s water supply issues.
https://www.wired.com/story/los-angeles-just-proved-how-spongy-a-city-can-be/