(CNN) The toll that Harvey is taking on Texas is staggering. Already, it has dumped 11 trillion gallons of water over the state, says Ryan Maue with WeatherBell, a weather analytics company. And by the time it dissipates, the state will have seen 25 trillion gallons of rain, he predicts. And Houston, which is particularly hard hit, is asking anyone with a boat to help volunteer with rescues. Here's a look at Harvey's impact, by the numbers:

Source: CNN August 28, 2017 01:18 UTC