At the base of the Smith Mountain in California’s San Joaquin Valley, Rebecca and Tory Torosian own a small farm known for its citrus and stone fruit. In the summer, they usually irrigate primarily with runoff from the Kings River, by way of a canal. But this year, as California contends with a historic drought, the irrigation district did not run any water, cutting them off. In turn, the Torosians decided to stop irrigating their citrus trees—five acres of oranges, mandarins, and grapefruit they’ve cultivated for years. And without irrigation, the trees won’t make it through the long, hot dry season.