Less and less people, but not THAT many less. That said, CA has the ability, as others have noted, to produce vastly more water through desalination. Also new reservoirs. The voters approved the Sites reservoir in northern CA in 2014. Like San Luis in Central CA, it would not be fed by snowmelt or a major rivers. Rather, like San Luis, water would be drawn by the Central Valley Project to fill it, specifically vis a vis Sites, from the Sacramento River.
Like San Luis, just under 2.5
Million acre feet, nominally enough water for 10 million people. It would have easily filled this year. Like most things, our lib green government enacts the will of the people when the government agrees with it; otherwise they blow it off. Supposedly construction will begin this year. We’ll see about that
California sends water form farmers down the river to protect a small fish.