California has more hydrologic variability than any state in the US, meaning that we have more drought and flood years per average year than any other state. This is a problem, but has also meant that we have designed for droughts, which are always testing us. 2021 is the 3rd driest year in more than 100 years of precipitation record. 2020 was the 9th driest year in the precipitation record.
- Phys.org: Signs of drought from space