California would not have severe droughts if they did 2 things.
1- Build more dams/reservoirs
2- Shut down the Aquaduct
No, California would still have severe droughts in sections of the state, it’s just California’s climate and that hasn’t changed. What you are addressing is water shortages in over populated sections of the state. Nothing that that happened over the last few years is new, we have always had periods of drought followed by periods of excessive rains.