California’s Imperial Valley has some of the lowest rainfall in the state, yet uses the largest allotment of Colorado River water. Why is such an arid part of the state an agricultural powerhouse?Today, we look into how the region secured its rights. Read the full transcript here.Host: Gustavo ArellanoGuests: L.A. Times water reporter Ian JamesMore reading:In California’s Imperial Valley, farmers brace for a future with less Colorado River waterColorado River in Crisis: A Times series on the Southwest’s shrinking water lifelineCalifornia is isolated and alone in battle over Colorado River water cuts