Houston flooding: By the numbers

Death toll rising after Houston flooding
death toll rises houston area flooding gray pkg ac_00013428

    JUST WATCHED

    Death toll rising after Houston flooding

MUST WATCH

Death toll rising after Houston flooding 02:35

(CNN)When mammoth flooding engulfs a metropolis like Houston, the results are disastrous -- and can be difficult to imagine.

Here's what the calamity looks like, by the numbers: