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California’s Dams Need Repairs to Survive Future Major Flood, says Author

A recent UCLA study says that in the next 40 years, California could likely see a flood massive enough to cause nearly $1 trillion of damage, force millions of people to evacuate, and leave houses in California’s Central Valley 30 to 40 feet underwater. And the state is ill-prepared when it comes to infrastructure like dams that could prevent flooding.

Some California Cities Think They’re Safe from Sea Level Rise. They’re Not, New Research Shows

Just north of the Golden Gate Bridge, yet a world away from San Francisco, in an unincorporated and oft-overlooked area known as Marin City, sea level rise is rarely the first worry that comes to mind. Traditional flood maps for this predominantly Black and working-class community suggest that the area is safe from rising water until 3 feet or more. But sea level rise is a lot more complicated than just waves breaking over seawalls and beaches disappearing.

A Warming California Sets the Stage for Future Floods – UCLA Study Finds that Continued Climate Change Will Deliver a Dangerous One-Two Punch for State’s Water Managers

By the 2070s, global warming will increase extreme rainfall and reduce snowfall in the Sierra Nevada, delivering a double whammy that will likely overwhelm California’s reservoirs and heighten the risk of flooding in much of the state, according to a new study by UCLA climate scientists.

Scientists Predict Dramatic Increase in Flooding, Drought in California

California may see a 54 percent increase in rainfall variability by the end of this century, according to new research from the lab of Assistant Professor Da Yang, a 2019 Packard Fellow and atmospheric scientist with the University of California, Davis. Writing in the journal Nature Climate Change, Yang and his co-authors predict the entire West Coast will experience greater month-to-month fluctuations in extremely dry and wet weather, especially in California. The lead author is Wenyu Zhou, a postdoctoral researcher in the Lawrence Berkeley National Laboratory where Yang has a dual appointment.

The study explores the Madden-Julian oscillation (MJO), an atmospheric phenomenon that influences rainfall in the tropics and can trigger everything from cyclones over the Indian Ocean to heatwaves, droughts and flooding in the United States.

Yorkshire Water Takes Part in Landmark Carbon-Cutting Project

Yorkshire Water has joined more than 40 farmers in East Yorkshire and North Lincolnshire to take part in a landmark project which could help return atmospheric CO2 to pre-industrial levels, reduce flooding and improve soil health.

Thousands Fled for Their Lives When Two Michigan Dams Collapsed. More Disasters Are Coming, Experts Say

The urgent evacuation of 10,000 people from communities below two failing dams in central Michigan last month prevented the loss of life, but the collapsed dams expelled billions of gallons of water from two large lakes, sending them hurtling downstream in a powerful rush of destruction. Water ripped buildings off their foundations, smashed and twisted roads and bridges, damaged or destroyed an estimated 2,500 properties and triggered fears of contamination as it swept by a chemical plant and hazardous waste sites and submerged downtown Midland — a city of 40,000 people — under 9 feet of water.

New Survey Reveals American Concerns About Water

An educational organization called “The Water Main” has just released a sweeping new survey of American’s knowledge and concerns about water. I encourage you to browse the full report, but here’s some key findings to entice you.

Back Off the Beach and the Rising Sea? No Way, California Cities Say

The view from high up in Del Mar’s 17th Street lifeguard station is a visit-California poster: a sweeping curve of sand, dramatic coastal bluffs, a welcoming sea. What scientists see, though, is somewhat more sobering: the Pacific Ocean as seething menace, a marine battering ram born of climate change that will inexorably claim more and more land and whatever sits upon it.

With rising seas now posing a greater threat to California’s economy than wildfires or severe earthquakes, state authorities are cautioning those who live along some of the Golden State’s famous beaches to do what they’re loath to do: retreat. Turn their backs to the sea and move homes, businesses, schools and critical infrastructure out of harm’s way.

The ocean could rise two to ten feet by 2100, imperiling $150 billion in property, according to state estimates, and erasing two-thirds of California’s beaches.

Cities are Flouting Flood Rules. The Cost: $1 Billion

It’s a simple rule, designed to protect both homeowners and taxpayers: If you want publicly subsidized flood insurance, you can’t build a home that’s likely to flood.

Drought or Dangerous Flooding? Research Aims to Tame Atmospheric River Risks – and Save California’s Rain

We were flying about 200 nautical miles off the coast of California when a voice over the headset reported a strong smell of fuel in the back of the plane.

I was in the cockpit with the U.S. Air Force’s “Hurricane Hunters,” who spend the summer and fall flying into the eyes of hurricanes. On a Tuesday at the end of January, though, we flew out of Travis Air Force Base in California toward a different kind of storm: an atmospheric river that was moving east across the North Pacific, toward the West Coast.