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How does a drought last? NASA Satellite are following rainfall

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and we've seen record rainfall across the mid-west and

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record droughts across California. But NASA Satellite data from GRACE are also

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able to track how much water is stored in surface reservoir's and in the ground water below.

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At this point California is about year behind on rainfall.

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Meaning that to make up for the lost water that we see as a measure of gravity, you'd

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have to fill the entire state knee deep with water.

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( woosh )