Here's a thought. What has man built in an active earthquake zone, that's ever survived an earthquake? If a tunnel ruptures, it will make 'Deep Water Horizon' look like a tea party.
Did you happen to see any of the pictures of the Oroville Dam raceway? Think of that image underground. The same folks who gave us an untested overflow at Oroville will be doing that work on the twin tunnels. I feel safer already.
Name a single project that state government did right and on budget. Just one. We can't even build a single bridge above ground that isn't flawed.
re: "But Californians have been re-engineering the Delta for more than a century. In time, nature will reassert itself. An earthquake will strike and levees will slump, inundating the man-made island and disrupting the balance between fresh and salt water. As sea level rises longer term, salt water will flow further inland. Sooner or later, something will give."
How will two tunnels transferring water from the north of the state to the south help to shore up levees, handle sea level rise and maintain the Delta's balance? You're really saying that the Delta is a goner so better make sure the southern portion of the state can get their water from the Sacramento and by-pass it...
to use on increasingly salt-polluted farmlands much of which should be put out of production, and which are being used to grow an increasing volume of nut exports to China, for example, where consumers are being bombarded by one of the most successful marketing campaigns ever by the Almond Board, just to take one example of the damage that Big Ag profits are doing to the Calif. environment. Of course the workers are among the poorest paid in the state as are those agricultural counties.
Selling Water and carbon (Air) credits has become quit lucrative in a earth quake ridden State willing to spend the funds designated for the infrastructure on Pipe dreams. Water is needed in both the North and the South. retention or reclaimed. . .
Pick one. New sources required.