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Where Do Valley Rivers Start – and End? Examining Our ‘Tremendously Engineered’ System

California has one of the most complex water systems in the world. And so, the factors giving rise to our region’s floods are more complicated than the simple cascading of rain and snowmelt downhill during a rainier-than-average wet season.

We are well into one of the wettest winters on record in the San Joaquin Valley. Historic precipitation levels have buried the high Sierra Nevada under more than 50 total feet of snow. And parts of the Valley, stricken for years by severe drought, are underwater.