There are many reasons to oppose the Sacramento-San Joaquin Delta water tunnels project, now called the California WaterFix. The Trump administration has just added a few more. The WaterFix is the most controversial and expensive water project in California history. It would install two huge tunnels, at a cost of at least $20 billion, revamping the way the state diverts water from the Sacramento River and the delta to farms and cities to the south. The earlier “peripheral canal” version of this project was voted down in a statewide referendum by a 2-to-1 margin in 1982.