Despite its status as an agricultural superpower, eclipsing every other U.S. state in farm output, California’s farming sector wields relatively little influence in Sacramento. When you evaluate the state’s GDP components, the sectors that dominate are financial, IT, and services, at around a half-trillion each, followed by manufacturing and government at around $400 billion and $300...

Farmers in the San Joaquin Valley require roughly 15 million acre feet of water per year to irrigate their crops. In return they produce more than half of all California’s agricultural output. But everything is changing. Since 2000 the amount of water the farmers receive from the State Water Project and the Central Valley Project has...