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State Puts $25 Billion Price Tag on Water Tunnel Plan

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Multi-billion dollar infrastructure projects generally aren’t built without an appearance of urgency. On Wednesday, the Brown Administration visited the high-tech capital of California to make that case for its $24.54 billion plan for the Sacramento-San Joaquin Delta.

“Silicon Valley relies overwhelmingly on Delta water.”

“People think that state water is about some farmers in the valley and just Southern California,” said California Natural Resources Secretary John Laird. “Silicon Valley relies overwhelmingly on Delta water and the economy of the Silicon Valley is tied to whatever the direction is of the state water project.”

To meet those water needs, state officials are proposing two 35-mile water tunnels in the Delta that would connect to the state’s current water system, running hundreds of miles south to the Central Valley and Southern California.

The water supply for 25 million Californians is currently pumped out of the Delta by aging infrastructure at its southern edge. Concerns over crashing salmon and Delta smelt populations have slowed the pumping in recent years. State officials are also making the case that a major earthquake could shut the system down.

(Yael Braha/KQED)

(Yael Braha/KQED)

“California’s current water supply system is currently vulnerable to many threats and the cost of failure would be enormous,” Laird said. “We’ve seen what happened with Superstorm Sandy on the East Coast.”

The cost of building and implementing the Bay Delta Conservation Plan, $24.54 billion, jumped by more than a billion dollars from previous estimates. Construction costs add up to $19.7 billion; the rest goes to operation over the lifetime of the project. “When you consider the current trends in the Delta, I think the real question is can we afford not to implement the Bay Delta Conservation Plan,” said Department of Water Resources director Mark Cowin.

Water districts and agencies would pay for construction of the tunnels, topping $14 billion. The Santa Clara Valley Water District estimates its customers would pay an added $60 a year to cover the district’s share.

Caption here

A proposed water plan for the Sacramento-San Joaquin Delta could cost $24.5 billion. (Image: DWR)

How much water the project will provide for water districts is still an open question. Federal and state wildlife agencies released concerns that the tunnels would remove too much water from the ecosystem, harming endangered fish.

“The overall affordability of the project is critically important to us,” said Ted Page of the Kern County Water Agency in a statement. “We need to see a project that provides improved water supply, has affordable costs and enforceable regulatory assurances before we can make any commitments.”

The plan also includes more than $4 billion in habitat restoration, designed to help bring back the Delta’s crashing ecosystem. Officials are planning on using funding from the water bond on the 2014 ballot, as well as $1.9 billion from a second water bond sometime in the future.

Critics of the plan say the administration has shied away from doing a true cost-benefit analysis of the plan. The state says water agencies paying for the project will see a net benefit of $5 billion.

“It’s funny that Govenor Brown, the biggest proponent of the tunnels, said it’s time for California to live within its means because this would do exactly the opposite,” said Adam Scow of Food & Water Watch.

In today’s dollars, California spent about $18 billion on the original State Water Project, a network of dams, pumps and aqueducts that broke ground in 1957.

“In California, we spend more than $30 billion a year in all aspects of water management,” said Ellen Hanak, economist at the Public Policy Institute of California. “You add in the tunnels, you’re going to be increasing that amount by less than 10 percent a year.”

“The question for the current tunnel proposal is whether factoring in water reliability and various other benefits, is that going to be enough to make it worth the price?” she said.

State officials are expected to release another full draft of the plan in October, with a public comment period to follow.

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Category: Engineering, Environment, News, Water

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About the Author ()

Lauren is a radio reporter covering environment, water, and energy for KQED Science. As part of her day job, she has scaled Sierra Nevada peaks, run from charging elephant seals, and desperately tried to get her sea legs - all in pursuit of good radio. Her work has appeared on Marketplace, Living on Earth, and NPR's Morning Edition and All Things Considered. You can find her on Twitter at @lesommer.
  • John Muir

    Pray tell — if this project is supposed to improve conditions in the Delta why do every fishing and environmental oppose it? I call upon Governor Brown and his people advocating for the project to answer this question.

  • Joey

    Lets take a look at those numbers in the graph. The bay bridge was supposed to cost 1.4 billion. Current estimates put completion which is years away, at 14-16 billion. The high speed rail was voted on and for 20 billion people said yes. Not even close to completed and 68 billion spent. Maybe the government should collect bids. And force contractor to come in at or under budget. Cause when the bid for 25 billion balloons to 500 billion and the state cant pay it. We will be broke, have no water, and every one will lose. Hey southern Ca. residents. Stop plantung lawns. How do I pay a higher water rate in the east bay then these clowns that live in the desert.