The 78 trillion gallon number is based upon the statewide average of 27.6 inches of rainwater and "snow-water equivalent" that's fallen on the state from Oct. 1 – the beginning of California's ...

Methane containment materials cover a manure lagoon near an industrial feeding lot near Powersville, Missouri, on July 7. (KC McGinnis/For The Washington Post) A state climate program helps ...