Keith Larrabee’s farm sits on 4,000 acres of California’s Sacramento Valley, between a coastal range of mountains to the west and the tall Sierra Nevadas to the east. It’s an area that traditionally gets much more rain than most of the drought-stricken state. Even so, Larrabee is always worried about the cost and availability of water for his orchards of walnuts and pecans and his 3,000 acres of rice.
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