PPIC has recommended [PDF] building a Peripheral Canal to convey water around the Sacramento Delta to aqueducts that take water to Southern California [story; prior posts].
I remember the 1982 defeat of a ballot initiative to build the canal. Although the engineering of the canal was sound, Northern Californians just couldn't stand the idea of building an "express" lane for water exports to Southern California.
The PC is back because the current method of sending water south (big pumps pulling water from the Delta) is killing too many fish, especially endangered ones. A judge has already ordered that the pumps be shut off now and then to stop that killing. A PC would reduce the kill attributed to exports.
So, is the PC going to be built? Yes, if people are really trying to increase the efficiency exports to SoCal; no, if they are using the fish kills as a way of preventing exports of "our" water to "them."
Bottom Line: I am in favor of the PC because it makes the system work better. There are better ways to resolve issues with water exports (e.g., negotiations) than using lawsuits to protect fish.
hattip to DW