It takes 8 gallons of water to grow a tomato, 616 gallons to make a burger patty. In fact, the food each of us consumes per day represents an investment of 4,500 gallons of water. In this densely populated state where it rains only half the year, where does all that water come from? This book tells the story of California's most precious resource, tracing the journey of water in the state from the atmosphere to the snowpack to our faucets and foods.