California's Almonds Suck as Much Water Annually as Los Angeles Uses in Three Years [View all]
The thing is, nuts use a whole lot of water: it takes about a gallon of water to grow one almond, and nearly five gallons to produce a walnut. Residents across the state are being told to take shorter showers and stop watering their lawns, but the acreage devoted to the state's almond orchards have doubled in the past decade. The amount of water that California uses annually to produce almond exports would provide water for all Los Angeles homes and businesses for almost three years.

and 2013, US almond exports to China and Hong Kong more than quadrupled, feeding a growing middle class' appetite for high-protein, healthy food."
Yet the center of almond farmingand the farming of lots of the US's fruits and veggiesis exactly where the worst the most extreme drought is taking place. To make up for the water shortage, farmers are pumping groundwaterthe underground water that feeds aquifers, serving as a savings account of sorts for the state's water supply.


more:
http://www.motherjones.com/environment/2015/01/almonds-nuts-crazy-stats-charts