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San Diego County Water Authority Hosts Colorado River Board of California

The San Diego County Water Authority will host water leaders from throughout Southern California March 15 for the monthly meeting of the Colorado River Board of California. On Tuesday, March 14, before the formal meeting, CRB board members will tour projects in the region that promote water resiliency.

The CRB will consider the complex water supply issues facing the Southwest U.S. during its meeting. San Diego Congressman Scott Peters is also scheduled to address the CRB.

Relay Race: How ‘Zanjeros’ Get Colorado River Water to California Farms

In the right light, Jeff Dollente seems to make the sun rise. Standing over a canal, he cranks a wheel as the sun ascends and the sky yawns off the dark.

Mr. Dollente doesn’t deliver the morning, but in southeastern California’s Imperial Valley, his job is just as big. He delivers Colorado River water – a vital resource at risk – to farms that feed the rest of the United States.

Another Atmospheric River is Coming, Ranked 2 to 3 … But What Does That Scale Mean?

Another atmospheric river approaches this Tuesday. It is ranked on a scale of 2 to 3 … but what does that ranking mean and why do we have it?

And, as the climate crisis drives increasingly extreme weather, communicating just how extreme that weather actually is can also be challenging. From extreme heat to atmospheric rivers, weather hazard scales are no longer just for hurricanes and tornadoes.

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

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.

Scientists Confirm Global Floods and Droughts Worsened by Climate Change

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.

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

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.

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

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.

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

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.

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

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.

EPA to Limit Toxic ‘Forever Chemicals’ in Drinking Water

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.