California has been talking drought all Summer. Actually we've never been out of a drought since about 2012.
Yes, we've had years where it's rained a lot, but it's not the surface water, it's the aquifer where the real drought is. If you're not familiar with aquifer's, let me give you a little tutorial.
According to Wikipedia: An aquifer is an underground layer of water-bearing permeable rock, rock fractures or unconsolidated materials. Groundwater from aquifers can be extracted using a water well. The study of water flow in aquifers and the characterization of aquifers is called hydrogeology.