California's snowpack is at just 32 percent of normal. NASA is helping to provide week-by-week measurements of the drought-stricken river basins in the Sierra Nevada mountains, the source of much of the state's drinking water.
California's snowpack is at just 32 percent of normal. NASA is helping to provide week-by-week measurements of the drought-stricken river basins in the Sierra Nevada mountains, the source of much of the state's drinking water.
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