In February, a huge hole opened in the Lake Oroville main spillway. The cause of the hole is still undetermined. The ensuing closure of the main gates and use of the emergency spillway for the first time ever caused damage to the hillside, erosion toward the spillway structure and thousands of people to evacuate. The California Department of Water Resources feared catastrophic flooding and chose to once again release water down the main spillway.
Water management in the West can often seem to pit people against wildlife, but it doesn’t have to, according to a recent report by the National Audubon Society. The report highlights how drying saline lakes in the West and changing riparian habitat along the Colorado River are impacting migrating birds. But the two habitats also share a vulnerability to climate change and water management. The demand for water from growing metropolitan areas, like Salt Lake City, is often at the expense of these habitats and wildlife.
Current weather forecasting tools are less than adequate for managing California’s most vital natural resource, state water officials said Tuesday. People at the state Department of Water Resources are now working with researchers at NASA and the Scripps Institution of Oceanography to develop new technology to better forecast moisture-laden atmospheric river storms, like the ones that hammered the Mother Lode and the rest of the Central Sierra in January and February.
Like every autumn, October is bringing cooler weather, changing leaves and pumpkins to fields across California. But unlike the past five years, when a historic drought gripped the state, there’s something new across the landscape: full reservoirs. From a water supply standpoint, California is heading into this winter’s rainy season in much better shape than any year since 2011. San Luis Reservoir, the massive inland sea between Gilroy and Los Banos that provides key supplies for Central Valley farmers and cities from San Jose to San Diego, is 86 percent full. A year ago it was only a quarter full.
Marijuana is becoming big business around the West as more states legalize the plant’s cultivation for recreational purposes. California’s entry into the field, which becomes official on January 1, is certain to bring an explosion of cannabis-related commerce simply because of the size of its market. All this poses a vital question: How much will marijuana tax the West’s water supplies?
As California continues an epic regulatory effort to reallocate water supplies for salmon habitat, an equally big question looms over the process: How much water do salmon and other native fish really need? The question is at the core of a process led by the State Water Resources Control Board to take water from existing human uses – both agriculture and urban – and rededicate it to instream environmental flows in the San Joaquin River, the state’s second-largest river.
Last week, President Trump’s Department of the Interior decided to exempt itself and the California State Water Project from rules protecting threatened native fish and their critical habitat in the Bay-Delta estuary. These rules are called “Fall X2,” and they require maintaining freshwater habitat in the Delta further west in wet years like 2017, when water is abundant. Right now, a request is pending with the State of California to join with Trump in weakening these rules. In 2011, the California Department of Fish and Wildlife (DFW) concluded that, “The Fall X2 action is expected to be fully implemented in future years.
The Bay Area imports most of its water and relies on the Sacramento-San Joaquin River Delta and its tributaries for about 70 percent of its supply. Those supplies face an uncertain future as a changing climate shrinks the Sierra snowpack and raises sea levels, and a declining ecosystem results in further restrictions — all while the Bay Area’s population and economy continue to grow. The stark reality is that 25 million people and 3 million acres of farmland are at risk of losing up to 20 percent of their future water supplies if the status quo continues in the delta.
Dam builders from President Franklin Roosevelt’s administration wanted to bring water to the parched eastern half of the San Joaquin Valley, but first they had to deal with a cluster of landowners whose ancestors had been there since the 1800s. The deal they cut in 1939 paved the way for much of the Central Valley Project, an engineering marvel that helped turn the Valley into one of the world’s most productive farming regions. It has also formed the basis, nearly 80 years later, of a major funding impasse that threatens to unravel California WaterFix.
California’s biggest water project in decades appears to be in limbo after a key irrigation district voted not to help underwrite Gov. Jerry Brown’s plan to build two giant tunnels that would re-engineer water transport in the state. The no-vote at the Fresno-based Westlands Water District — the largest agricultural water supplier in the U.S. — puts the $17 billion project’s funding on shaky ground. Will other water districts pick up the slack? Other large water agencies considering participating in the project are set to vote soon. Another key player, Los Angeles’ Metropolitan Water District, will vote on October 10.
The Water News Network is San Diego County’s source for water news and information.
