Noah’s flood rained for 40 days and 40 nights.
The California Great Flood of 1861-1862 rained for 45 days straight.
http://en.wikipedia.org/wiki/Great_Flood_of_1862
Since “official” weather records weren’t kept back then, it’s never used to compare modern “record breaking” rainfall events.
When it happens again (and it will) every city in the central valley, including Sacramento, will be destroyed.