http://www.californiadroughtupdate.org/pdf/20170216-California-Drought-(and-Flood)-Update.pdf
You may notice that I renamed the report, at least for this week, as “California Drought (and Flood) Update.” About one month ago, you may recall, I wrote that perhaps this winter’s storms of record or near record rain and snow signals something more fundamental is happening with the climate of the region. It is more and more appearing that we are returning to the characteristic climate of the past 2,000 years of alternating mega-droughts and mega-floods. It is only the past 150 years that the state has had relatively mild weather of moderate precipitation and droughts lasting no more than five years. For the remainder of these past two thousand years, droughts lasted decades and floods turned the Central Valley into a 400 mile-long lake.
So after 5-6 years of drought, the worst since record keeping began, we now have record rain and snowfall.