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Age, Drought, Rodents and Neglect Weaken California Levees, Heightening Flood Danger

/in , , /by /Los Angeles Timesby Susanne Rust and Ian James

The levee breach that left an entire California town underwater this weekend is putting a spotlight on how the state’s vital flood control infrastructure is being weakened by age, drought, climate change, rodents and neglect — leaving scores of communities at risk.

On Friday night, the swollen Pajaro River burst through the worn-down levee, flooding the entire town of Pajaro and sending its roughly 3,000 residents into what officials are now estimating to be a multi-month-long exile. A second breach was reported on Monday.

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Scientists Confirm Global Floods and Droughts Worsened by Climate Change

/in , , /by /PBSby Isabella O'Malley

The intensity of extreme drought and rainfall has “sharply” increased over the past 20 years, according to a study published Monday in the journal Nature Water. These aren’t merely tough weather events, they are leading to extremes such as crop failure, infrastructure damage and even humanitarian crises.

The big picture on water comes from data from a pair of satellites known as GRACE, or Gravity Recovery and Climate Experiment, that were used to measure changes in Earth’s water storage — the sum of all the water on and in the land, including groundwater, surface water, ice, and snow.

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Another Atmospheric River Storm to Hit Soaked California, Raising Fears of More Floods

/in , /by /Los Angeles Timesby Hayley Smith

An atmospheric river storm bearing down on California will drop more rain and snow this week, sparking fresh concerns about additional flooding and snowmelt in the already soaked state.

The storm, which originated near Hawaii, is expected to intensify Monday into Wednesday. It will create “considerable flooding impacts below 5,000 feet elevation across much of the California Coast and Central Valley and over the southern Sierra Nevada foothills,” the National Weather Service said.

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Persistent Drought and Overdevelopment Cause Record Low Water Levels for Tens of Millions

/in , , /by /PBS Newshourby Stephanie Sy

Despite a rainy and snowy winter out west, Lake Powell and Lake Mead, the reservoirs that provide water for 40 million Americans, are at record low levels due to the ongoing megadrought. Arizona is set to lose over 20% of its Colorado River water allotment this year alone. As Stephanie Sy reports, that’s leaving communities across the state scrambling to find alternatives.

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Atmospheric River-fueled Storm Arrives in California. Here’s Which Areas Will Be in the Bull’s-Eye

/in , /by /San Francisco Chronicleby Gerry Diaz

California is once again bearing the brunt of inclement weather, as a low-pressure system off the coast rapidly intensifies and becomes a storm, tapping into another atmospheric river that’s flowing between Hawaii and California.

The storm that started Monday night is forecast to raise powerful winds along the coast that will spread to all corners of the Bay Area, Central Coast and Central Valley and peak just before sunrise on Tuesday. These winds will ferry heavy rainfall, thunderstorms and the risk for more flooding across most of the California coast and eventually Southern California.

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More Moisture is Headed to Utah, the West. Will It Help Lake Powell?

/in , /by /Deseret Newsby Amy Joi O’Donoghue

Lake Powell is currently close to 180 feet below full pool and coming off a summer last year where several boat ramps were closed and owners were advised to retrieve their houseboats from the docks.

Releases from a couple of upstream reservoirs, including Flaming Gorge, were made last summer to help the nation’s second largest reservoir and its Glen Canyon Dam, which provides power generation to Wyoming, Utah, Colorado, New Mexico, Arizona, Nevada and Nebraska.

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EPA to Limit Toxic ‘Forever Chemicals’ in Drinking Water

/in , /by /San Francisco Chronicleby Michael Phillis and Matthew Daly

The Environmental Protection Agency on Tuesday proposed the first federal limits on harmful “forever chemicals” in drinking water, a long-awaited protection the agency said will save thousands of lives and prevent serious illnesses, including cancer.

The plan would limit toxic PFAS chemicals to the lowest level that tests can detect. PFAS, or per- and polyfluorinated substances, are a group of compounds that are widespread, dangerous and expensive to remove from water. They don’t degrade in the environment and are linked to a broad range of health issues, including low birthweight and kidney cancer.

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Newsom Loosens Rules to Allow More Floodwater to Flow Into Underground Reservoirs

/in , , /by /The New York Timesby Soumya Karlamangla and Jill Cowan Quoted: San Diego County Water Authority

As another round of heavy storms battered California, Gov. Gavin Newsom announced Friday that he would ease state rules to allow local water agencies to more easily redirect floodwaters to replenish the state’s severely depleted groundwater supplies.

The move comes amid criticism that California has flushed trillions of gallons of water out to sea during this winter’s repeated deluges. Water agencies and experts say the state’s strict rules that limit who can take water from streams and creeks have prohibited the local agencies from capturing the excessive flows, though California desperately needs to bank water for its next drought.

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Battered by Destructive Flooding, California Braces for More Rain

/in , , /by /Los Angeles Times

California is bracing for another round of rain beginning Monday as officials assess the damage from severe flooding along the Central Coast and Central Valley, which left scores stranded, and whole blocks under water.

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Sierra Snowpack Hits Record Levels After Recent Storms

/in , , /by /Newsweekby Jess Thomson

The snowpack in the Sierra Nevada mountains has reached record-breaking levels thanks to the deluge of snow smashing California this week.

According to data from the California Department of Water Resources (CDWR), the Southern Sierras—from San Joaquin and Mono counties to Kern county—currently have a snowpack 257 percent greater than the average for this time of year, and 247 percent larger than is average for the usual snowpack peak on April 1.

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