The Colorado River rationing went into affect on the first. Farmers will be losing fields. Even with LV and other cities slowing accepting lawns are not capable of growing in the desert there's not enough water. It would take years of rationing to restore the shed.

A mob rising up and municipalities caving to them or digging irrigation channels will empty reservoirs even faster. The shed is nearly broken and constantly going from droughts to floods is not restoring it. Nor is continued loss of snow caps.

Point is the climate crises is now.