More on the pipeline proposal
Long before Europeans came to California, water bursting from a crack in a Mt. Shasta lava flow became the Sacramento River. Snow falling south of Yosemite became the San Joaquin River.
These two giant streams joined just east of San Francisco Bay to form the Delta, tens of thousands of acres of tule marshes, islands and channels, before the water poured into the Bay.
Here is their summary of Delta issues:
... [T]he continued existence of the Delta is in doubt. The Delta marshes have been turned into fertile agricultural islands, whose fragile peat soils are subsiding due to farming practices. Some Delta islands are more than 20 feet below sea level, protected by inadequate levees.
In addition, huge state and federal pumps at the south end of the Delta (near Tracy) pump water from the Delta channels to more than 20 million Bay Area, Central Valley and Southern California water users and irrigate millions of acres of farmland in the Central Valley.
Catastrophic collapse of Delta islands will almost certainly occur due to subsidence, flooding, earthquakes and rising sea level, cutting off a major part of the water supply to most Californians. Recent analysis by Jeffrey Mount at UC Davis indicates island collapse is likely to occur relatively soon.
In addition, due to farming, water pumping and the nature of the Delta soils, Delta fish populations are crashing, and Delta water is far more polluted than the Sacramento River.
It seems to me that there are two interrelated issues here: how can we save the water supply, and how can we save the Delta? The piece summarizes it like this, however, seemingly ignoring the first point in their summary:
What is required to solve these two fundamental problems of the threatened loss of Delta islands, and the damage caused by diversion of water from the Delta?
Here is the summary of the pipeline project and it's potential benefits:
Diverting water through a pipeline beginning on the Sacramento River south of Sacramento and passing around the eastern end of the Delta to the pumps would have three beneficial effects. The pipeline would supply water of greatly improved quality, compared to water that is diverted today from the Delta. It would eliminate the threat to the exported water supply from earthquake and flood. According to University of California, state and federal fish experts, fish populations in the Delta would greatly benefit from such a facility due to restoration of more natural flows through the Delta. Substantial amounts of water would continue to enter the Delta to protect the Delta and San Francisco Bay environments.
Who would get control of such a pipeline?
But Northern Californians fear control of such a facility by irrigators in the Central Valley and the huge Southern California population. Diverting too much water could harm the environment.
However, if the new facility were owned and operated by Northern California communities, northerners could be assured that the facility would be operated for the benefit of the Delta and its related ecosystems. By giving a new Northern California agency control of the facility, the critical issue of trust could be resolved. The cost of a new facility would be less than $2 billion, easily affordable as a bond act, and far cheaper than trying to repair the system after a Katrina-like natural disaster.
I'm not entirely sure how letting one group operate the pipeline resolves the control and trust issue. Won't SoCal residents and Central Valley farmers be just as prone to mistrusting their NorCal neighbors?
Other opinions include this Alameda Times Star op-ed that focuses more on environmental issues, a version of which has appeared in several Bay Area papers:
Findings released at a recent scientific conference found a degradation of the wildlife populations at almost every level in the food chain...
There are multiple causes of the Delta's condition. New toxins in pesticides used to replace the longer-lasting older pesticides are proving to be harmful themselves. Accelerating development in San Joaquin County is pressuring the environment. A plan to export water south during the summer instead of the spring was supposed to prevent fish from being sucked into the turbines, but during the summer more of the fishes' food supply gets shipped away with the water.
And if that weren't enough, non-native invasive species are crowding out food sources more nutritional for fish.

