An Unprecedented Drought
An infographic on California's dry spell that plots data from the Palmer Hydrological Drought Index, a soil-moisture algorithm designed to measure the long-term impact of drought. The graph focuses on index values that fall outside the normal moisture range. It also includes trend lines to trace overall fluctuations in each region’s drought conditions.
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CreditsJen Christiansen, Wesley Grubbs, Mladen Balog, Amanda Hobbs
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