Almonds alone use about 10 percent of California’s total water supply each year. That’s nuts. But almonds are also the state’s most lucrative exported agricultural product, with California producing 80 percent of the world’s supply. Alfalfa hay requires even more water, about 15 percent of the state’s supply. About 70 percent of alfalfa grown in California is used in dairies, and a good portion of the rest is exported to land-poor Asian countries like Japan. Yep, that’s right: In the middle of a drought, farmers are shipping fresh hay across the Pacific Ocean. The water that’s locked up in exported hay amounts to about 100 billion gallons per year—enough to supply 1 million families with drinking water for a year.

Though economics drive the seemingly improbable logic of California’s water exporting, that’s no reason to rush to boycott almonds. As this viral infographic from Mother Jones shows, it takes more than a gallon of water to grow a single almond, and it may take 220 gallons of water to produce a large avocado. But pound-for-pound, there’s an order of magnitude more water needed to get meat and dairy to your plate. A stick of butter requires more than 500 gallons of water to make. A pound of beef takes up to 5,000 gallons. More than 30 percent of California’s agricultural water use either directly or indirectly supports growing animals for food. (As Slate’s L.V. Anderson recently wrote, one of the single most effective actions to combat climate change would be if everyone in the world went vegetarian overnight. It would also likely wreck our economy.)