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California’s second largest reservoir is shrinking

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California’s second largest reservoir is shrinking


A new study from California’s Department of Water Resources (DWR) has found that Lake Oroville is shrinking.

Water levels at the state’s second largest reservoir are in a much better place than they were two years ago, when severe drought gripped much of California. Two back-to-back wet winters, accompanied by atmospheric rivers, have supplemented the water levels at many California reservoirs and contributed greatly to their recovery, although the atmospheric rivers also caused flooding and mudslides.

Atmospheric rivers are a “long, narrow region in the atmosphere—like rivers in the sky—that transport most of the water vapor outside of the tropics,” according to the National Oceanic and Atmospheric Administration.

Despite Lake Oroville’s recovery, water officials recently discovered that its capacity was shrinking and that the lake had lost 3 percent of capacity since it was created in the 1960s.

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The Enterprise Bridge is pictured over a full Lake Oroville on June 15, 2023, in Oroville, California. Water officials recently learned that the lake’s capacity is shrinking.

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“DWR utilized the latest terrain-mapping technology to determine if there have been any changes in the lake’s volume to optimize how the reservoir is operated and ensure accuracy in estimating California’s water supply availability,” a DWR webpage said.

“What resulted were highly detailed 3D topographic terrain models of the bottom of the lake, which DWR engineers used to calculate a new storage capacity of 3,424,753 acre-feet, approximately 3 percent less than previously estimated,” the webpage added.

The DWR attributed the loss to “weather swings and almost six decades of service.” Newsweek reached out to the DWR by email for comment.

Despite the loss, DWR officials said Lake Oroville remains the state’s second largest reservoir, behind only Lake Shasta.

“Having updated storage capacity data allows us to operate Lake Oroville in a more efficient manner,” said John Yarbrough, the DWR’s deputy director of the State Water Project.

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“It ensures we are providing adequate flood storage protection during winter months and accurately accounts for the state’s water supply, which is especially important as we experience climate change-driven weather extremes,” he said.

During the winter months, water officials occasionally release water from the reservoir to provide flood mitigation for downstream communities, such as in February when atmospheric rivers brought a deluge of rain to the area. Once California enters its dry season, officials transition to retaining as much water as possible in the reservoir.

Lake Oroville’s water levels began rising last December and reached full capacity in May. The levels have been steadily declining over the past few weeks as California enters its dry season.

However, the lake is in a much better state than it was in 2022. As of Tuesday, Lake Oroville’s water levels were at 887 feet, only 12 feet below full pool of 900 feet. During the summer of 2022, the water levels were at only 750 feet.

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Newsweek is committed to challenging conventional wisdom and finding connections in the search for common ground.



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59-vehicle pile up in foggy conditions closed major California highway for hours

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59-vehicle pile up in foggy conditions closed major California highway for hours



A 59-vehicle pile-up shut down a main California highway Saturday morning as fog severely limited visibility.

The crash happened on Highway 99, nearly 40 miles north of Bakersfield, in Tulare County. The area, located in California’s Central Valley, is known as a top producer of agriculture. 

CHP officers said there was an initial crash on each side of the highway, which was followed by a series of other crashes, with 59 vehicles involved in total. 

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A 59-vehicle pile-up on Highway 99 in Tulare County closed the highway for hours. 

CHP Visalia


Fog limited visibility in the area to about 150-200 feet, the CHP said. 

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The highway was closed in both directions until about 2:30 p.m. as crews worked to clear the scene. It’s a major highway that stretches the entire length of the Central Valley. 

Officials said multiple people suffered minor to moderate injuries. 

The CHP said drivers should slow down, increase their following distance and remain alert, especially in low-visibility or congested areas. 



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Cal Fire to probe Ventura County response to tractor blaze that reignited into Mountain fire

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Cal Fire to probe Ventura County response to tractor blaze that reignited into Mountain fire


Cal Fire will examine the Ventura County Fire Department’s response to a small wildfire that subsequently rekindled from the charred skeleton of a tractor — eventually growing into the destructive Mountain fire.

Ventura County Fire Chief Dustin Gardner announced Friday that his department has reached an agreement with the California Department of Forestry and Fire Protection for an independent review of operations during the initial wildfire, which ignited and was contained in October 2024.

“Cal Fire is the nation’s leading expert on wildfire operations,” Gardner said. “No agency is better prepared to conduct this type of review and provide recommendations to enhance our future work.”

The initial blaze, dubbed the Balcom fire, was started on Oct. 30, 2024, by a tractor clearing brush in the Balcom Canyon area near the community of Somis, northeast of Camarillo.

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Firefighters responded with a C-130 air tanker, dropped retardant and created containment lines around the fire. They declared the 1.8-acre fire out after about three hours.

A week later, powerful Santa Ana winds arrived, picked up some bits of rubber from one of the tractor’s scorched tires and carried them over the containment area into dry vegetation, bringing the fire back to life, according to investigators.

The subsequent blaze, the Mountain fire, burned nearly 20,000 acres and destroyed roughly 250 homes and structures in Camarillo Hills and nearby communities in western Ventura County.

Ventura County fire officials said they followed protocol when they left the Balcom fire — clearing containment lines, dropping retardant, and using a drone with an infrared camera to identify lingering heat.

Gardner previously said that more than 100 firefighters used hoses to put a “wet line” around the Balcom fire perimeter, while bulldozers cut away vegetation in its path and aircraft caked the ground with retardant. Then, firefighters with hand tools and infrared technology checked the area for heat.

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The next day, officials said, crews flew a drone over the area and detected heat near the fire’s edge and the wheels of the tractor. Firefighters went to those areas and dug out smoldering material so it could cool, officials said.

Although the temperature around the tractor’s wheels registered at 300 degrees, Gardner said that’s not unusual for equipment caught in a fire.

Gardner said the department has since developed a post-fire policy and mop-up procedures after the Mountain fire. Ventura County fire officials implemented those changes for similar blazes later last year.

After a 2.3-acre brush fire ignited near Janss Road in Thousand Oaks last October, a drone team flew over the blaze’s footprint and identified hot spots to help firefighters mop up that same day. Crews continued to patrol overnight and again early the next day.

They returned two days later, with fire weather conditions forecast to increase, and scanned the fire footprint to ensure no residual heat remained.

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The approach echoed one that firefighters took during the Kenneth fire near Calabasas in January 2025. Officials used a drone to scan the fire’s 1,000-acre footprint to locate hot spots daily for roughly a week amid increased fire weather risks.



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Letters to the Editor: Population growth in California is stalling. Is that really a bad thing?

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Letters to the Editor: Population growth in California is stalling. Is that really a bad thing?


To the editor: The article about stalling population growth in California, plus the opinion piece bemoaning the lack of housing in L.A., got me to thinking (“Foreign-born population falls by 1.5 million amid Trump policies. California economy under threat,” Jan. 27; “Los Angeles is sabotaging itself on housing,” Jan. 27). Is perpetual growth the only way to assure prosperity?

Of course, there is plenty of land to build houses on, but is that what we really want? California is unique among states in the diversity, majesty and grandeur of its natural lands. Yes, we have national and state parks to preserve the most unique and precious features, but should the rest of it be developed into limitless vistas of tract homes with only these few outdoor museums remaining to show what once was everywhere?

Cities understand the value of zoning, restricting the density of housing — with the most desirable neighborhoods having big enough lots that you usually can’t see or hear your neighbors, with plenty of nature in between. Why can’t the state say when enough is enough, to curb endless runaway growth by zoning California statewide to limit density permanently?

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People have gravitated here because it is so special. Unless we establish limits, it won’t be special forever. Maybe growth flatlining is a solution, not a problem. Lots of open land is a way to preserve prosperity by preserving the value of what’s still here.

Robert C. Huber, Yorba Linda

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To the editor: It’s great to hear that there’s a population plateau in California. It seems the reason why we were so busy trying to build apartment buildings in single-family neighborhoods was because we were having too much population growth.

Well, that’s apparently no longer the case — good. Now the city can stop complaining about housing and focus on affordability of the housing we already have.

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Linda Bradshaw Carpenter, Los Angeles



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