The megaflood is not very hard to imagine. If I recall correctly the town of Ross in Marin County California got 29 inches of rain in the month of January 1993.

The megaflood is not very hard to imagine. If I recall correctly the town of Ross in Marin County California got 29 inches of rain in the month of January 1993. The Sierra Nevada got much more in places. Highway 88 up to Carson Pass was like a canyon in places with 15 foot walls of snow on either side. California does not normally get a huge amount of rain even in the winter, but when it does the storms are massive.