Sierra snowpack bigger than last four years combined, says NASA


New data from NASA show that this past winter's snowpack levels in California's Tuolumne River Basin, located in the Sierra Nevada mountain range, are higher than they were in the last four years combined.

Melting snow along the Tuolomne is an important source of water for both California's Central Valley — the heart of California's agricultural sector, and the crowded San Francisco area.

On April 1, NASA's Airborne Snow Observatory measured the Tuolumne Basin snowpack at 1.2 million acre-feet, which NASA says is enough snow to fill the Rose Bowl in Pasadena, California, nearly 1,600 times.

The snowpack is twice the volume of last year's, and 21 times larger than 2015's level, which was the lowest on record...