(Check out the New York boroughs map here.) And if you’re wondering what a borough even is, you’re not alone; ask any New Yorker and they may not even be able to spell it out for you.

Thanks to $7.2 million in funding from New York City, the number of flood-prone areas FloodNet monitors will increase from 31 to 500 across all five boroughs. ... are low cost and open-source.