SACRAMENTO – Gov. Arnold Schwarzenegger will formally declare today that the state has plunged into a drought, putting Californians on notice that rationing could be next if conservation efforts are not stepped up. “The governor is ringing the bell. We're heading over a cliff,” Lester Snow, director of the state Department of Water Resources, said in an exclusive interview with The San Diego Union-Tribune. Schwarzenegger will issue an accompanying executive order to launch an aggressive campaign to transfer water to parched regions, pursue federal aid, quickly funnel more state money to conservation projects and to lay the foundation for a...