One hundred fifty-five years ago, California had a massive flood after two decades of drought. The only things different were that CO2 was below 300 PPM, they didn’t have the dimwitted Jerry Brown for governor, and the state wasn’t populated by tens of millions of left-wing morons who believe droughts and floods are caused by other people’s SUV’s.
California Megaflood: Lessons from a Forgotten Catastrophe – Scientific American