@Whirli,
I saw it while deployed to Afghanistan.
There was a drought, access to water was limited. Entire villages were going to war with each other over supplies.
Not talking about lawyering up, but AKs, PKMs, RPGs kinda shooting war.
If there ever was some kind of major social disorder in the US, everyone down stream of the CO river and those reservoirs would be in serious trouble.
And for southern CA, it is a long way to secure those reservoirs.