In December 2008, the U.S. Fish and Wildlife Service issued what is known as a “biological opinion” imposing water reductions on the San Joaquin Valley and environs to safeguard the federally protected hypomesus transpacificus, a.k.a., the delta smelt. As a result, tens of billions of gallons of water from mountains east and north of Sacramento was channelled away from farmers and into the ocean, leaving hundreds of thousands of acres of arable land fallow or scorched.