Historic California drought called a red flag for future of US (+video)
The California drought, the worst in its history, could have far-reaching impacts for the state and for a nation that is only now starting to cope with climate change, experts say.
As California faces the worst drought in its 163-year history with no hint of relief in sight, some scientists are calling the event a red flag for the future of the nation.
Gov. Jerry Brown raised the issue in his State of the State address Wednesday, saying ‚Äúwe do not know how much our current problem derives from the build-up of heat-trapping gasses, but we can take this drought as a stark warning of things to come.‚ÄĚ
Water shortages have widespread impacts. Agriculture and energy generation account for 80 percent of the nation‚Äôs clean water use, says David Dzombak,¬† head of Carnegie Mellon University‚Äôs Civil and Environmental Engineering Department. And even when cities meet their water demands during a drought, the costs can leave them ‚Äúexposed to significant risk of financial failures,‚ÄĚ says Patrick Reed, a professor of civil and environmental engineering at Cornell University, in an e-mail.
In that way, crises can led to new policies and new attitudes, and some say the California drought could be just such a catalyst.
‚ÄúAt the state, regional, and federal level, and across the country, people are just starting to come to grips with the fact that our climate is not stationary,‚ÄĚ says Professor Dzombak. ‚ÄúWe are in a dynamic, changing climate situation that will affect all parts of the country in different ways,‚ÄĚ he says, led by the West and Southwest so impacted by drought.
Governor Brown laid out a roadmap of drought solutions Wednesday. He asked businesses and homeowners to voluntarily reduce their water usage by 20 percent. Last week, he declared a state of emergency.
‚ÄúIt is imperative that we do everything possible to mitigate the effects of the drought,‚ÄĚ he said in his speech. ‚ÄúWe need everyone in every part of the state to conserve water. We need regulators to rebalance water rules and enable voluntary transfers of water and we must prepare for forest fires.‚ÄĚ
Longer term, the State Water Action Plan prioritizes water recycling, expanded storage, and groundwater management, as well as investments in safe drinking water, ‚Äúparticularly in disadvantaged communities.‚ÄĚ
These mandates are a ‚Äútall order,‚ÄĚ Brown said. But it is ‚Äúwhat we must do to get through this drought and prepare for the next.‚ÄĚ
Major innovations of the last century came in response to water shortages, such as the 1928-34 drought, notes Jay Lund, director of the Center for Watershed Studies at the University of California at Davis, in a blog post.
‚ÄúThis six-year drought accelerated design and construction of the Central Valley Project and served as the design standard for most of California‚Äôs water system until 1976,‚ÄĚ he says. Quoting Stanford University economist Paul Romer, he adds, ‚Äúa crisis is a terrible thing to waste.‚ÄĚ
Similar innovations today could involve shifting to renewable energy sources that do not require as much water as steam-driven electrical plants.
The severe drought highlights the need for ‚Äúa new way of thinking about our infrastructure,‚ÄĚ says Dzombak.¬†¬†