If it feels like last week's storm brought 10 trillion tons gallons of rain to California, that's because it actually did. A meteorologist calculated the week's total rainfall by determining the average amount of rain that came down over one square mile and then multiplying that figure by the number of square miles in the state to come up with a rough estimate of 10 trillion gallons. That's the equivalent of the amount of water that goes through Niagara Falls in 154 days. [NBC Bay Area]
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