The federal government on Tuesday spared five Western states from immediate Colorado River water cutbacks, but continued existing limits for Arizona and Nevada and warned that drastic conservation was needed to protect dwindling reservoirs from severe drought.
After Colorado River Basin states failed to meet a deadline for emergency drought reductions Tuesday, the U.S. Bureau of Reclamation announced new emergency water cuts for Arizona, Nevada and Mexico as the nation’s two largest reservoirs decline to perilously low levels.
For the second year in a row, Arizona and Nevada will face cuts in the amount of water they can draw from the Colorado River as the West endures more drought, federal officials announced Tuesday.
The cuts planned for next year will force states to make critical decisions about where to reduce consumption and whether to prioritize growing cities or agricultural areas. Mexico will also face cuts.
Southern California water districts are grappling with what the fallout could look like if supplies from a critical source — the rapidly drying Colorado River — are cut next year.
The US Bureau of Reclamation warned at a U.S. Senate hearing in mid-June that seven western states had 60 days to voluntarily reach a deal: Cut Colorado River water use by 2 to 4 million acre-feet in 2023 or face federally-mandated cuts instead. It’s a massive amount — at least seven times more than Nevada is entitled to in a year.
About 300 miles southwest of San Antonio, water taps have run dry in a major Mexico city.
Thousands of residents wake up at dawn to check their taps and fill up containers. Others line up with large jugs, bottles and buckets at cisterns around the city, where fights have broken out when people try to jump the line.
I was eating breakfast on a Monday morning at Sears Fine Food in downtown San Francisco, casually watching the local five-day weather forecast on a television screen behind the counter. A little symbol along the bottom showed a happy-looking sun for the rest of the day. Wednesday had a friendly-looking cloud and a few raindrops, and Thursday had a dark, threatening cloud with heavier drops.
I knew Thursday’s conditions would be much rougher than the symbol conveyed. I had been studying detailed satellite data and weather models, and they indicated that a major atmospheric river (AR) was likely to hit the city. The symbol was completely inadequate for communicating the threat of the approaching storm.
It takes a lot of water to make power.
From spinning turbines to hydraulic fracturing to refining fuel, the flow of water is critical to the flow of electrons and heat. About 40 percent of water withdrawals — water taken out of groundwater or surface sources — in the United States go toward energy production. The large majority of that share is used to cool power plants. In turn, it requires energy to extract, purify, transport, and deliver water.
The federal government this week will announce the drought forecast for the arid Colorado River Basin, as well as possible cuts western states must make to conserve more water from a supply serving roughly 40 million people.
The Bureau of Reclamation Tuesday will issue its projection for conditions over the next two years in the West’s most important water supply—and the news is expected to be bleak.
Two months ago, federal officials took the unprecedented step of telling the seven states that depend on Colorado River water to prepare for emergency cuts next year to prevent reservoirs from dropping to dangerously low levels.
The states and managers of affected water agencies were told to come up with plans to reduce water use drastically, by 2 million to 4 million acre-feet, by mid-August.
A team led by Kristen Guirguis, a climate researcher at Scripps Institution of Oceanography at UC San Diego, found evidence that the risk of hazardous weather is increasing in the Southwest.
The researchers investigated the daily relationships among four major modes of weather affecting California. How they interact governs the formation of weather events such as atmospheric rivers capable of bringing torrential rains and Santa Ana winds that can spread devastating wildfires.
“This study suggests that weather patterns are changing in a way that enhances hot, dry Santa Ana winds, while reducing precipitation frequency in the Southwest,” said Guirguis. “These changes in atmospheric circulation are raising the risk of wildfires during California winters.”
