Devastating floods are almost annual occurrences in the West and in California. With the anticipated sea level rise and other impacts of a changing climate, particularly heavy winter rains, flood management is increasingly critical in California. Compounding the issue are man-made flood hazards such as levee stability and stormwater runoff.
The Board of Commissioners for the Humboldt Bay Harbor, Recreation and Conservation District passed a motion to declare a countywide state of emergency in light of shoaling, or increased sedimentation, on Humboldt Bay near the channel entrance — conditions that could persist for months, officials said. … The shoaling stems from recent winter storms and has brought activity on the bay to a halt…
This is among the hottest of Napa County’s hot potatoes. That’s because it strikes such nerves as possible, further constraints on new vineyard development in local hills and a perceived need in some quarters to do more to protect water quality in local reservoirs.
If you stand on a fragile levee of the Sacramento River these days and watch the chocolate brown water rushing toward the delta only a few feet under your boots, one can’t help but wonder why the state and federal governments aren’t capturing more of this precious resource. Why is all but a tiny fraction heading out to sea?
Rep. Grace Napolitano, a Democrat with a district office in El Monte, sent a letter Wednesday, Feb. 20, urging the U.S. Army Corps of Engineers to make safety repairs at Whittier Narrows Dam its highest budgetary priority in light of an assessment that the barrier could fail in the event of a very large, very rare storm.
At the March 29th Santa Ana River Watershed Conference in Orange County, the PPIC’s Ellen Hanak will put the top managers of the watershed’s five major water districts on the hot seat to uncover the region’s latest innovations and find out what the next generation of integrated water management planning looks like.
When it floods in California, the culprit is usually what’s known as an atmospheric river—a narrow ribbon of ultra-moist air moving in from over the Pacific Ocean. Atmospheric rivers are also essential sources of moisture for western reservoirs and mountain snowpack, but in 1861, a series of particularly intense and prolonged ones led to the worst disaster in state history: a flood that swamped the state. What would happen if the same weather pattern hit the state again?
Noting the Klamath River’s history as the West Coast’s third-largest salmon-producing river, the City Council’s letter states that they believe a “free-flowing Klamath will revitalize” both the commercial and recreational fisheries, creating jobs and bringing revenue to the community.
One week after an atmospheric river storm pounded Northern California, causing flooding, mudslides and traffic headaches, another one appears to be forming in the Pacific and is set to arrive early next week. Computer models show the storm hitting Monday or Tuesday, with the North Bay and parts of California farther north taking the brunt, although that could change, experts say.
Lake Oroville, currently at 773-foot elevation, could rise to 780-785 feet by the end of the month based on current projections. DWR and crews with Kiewit Infrastructure West Co., the contractor for the spillways construction project, would remove equipment from the main spillway if the lake elevation reached 780 feet.
At a Town Hall Tuesday night, Rep. Jared Huffman (D-San Rafael) told the large crowd filling nearly every available seat in the Ukiah Valley Conference Center about a possible future for the Potter Valley Project that would remove the controversial dam, but preserve the water supply the Ukiah Valley has depended on for more than a century.
In 2014 Santa Monica embarked on a course to be virtually water independent through local sources by 2023. … The switch has been accomplished through an extensive plan that encompasses small measures like toilet replacements, household rain harvest barrels and aggressive conservation to large measures like cleaning up contaminated groundwater, capturing street runoff and recycling water.
In another sign Southern California is having its wettest winter in years, Mystic Lake has risen again in the rural, agricultural valley between Moreno Valley and San Jacinto. The ephemeral body of water was largely absent the past decade
February storms have almost eliminated drought conditions from California. The U.S. Drought Monitor said Thursday that just over 67 percent of the state is totally free of any level of dryness. Just under 30 percent is classified as abnormally dry, and less than 4 percent remains in either moderate or severe drought.
We find that the occurrence of both extreme wet and extreme dry events in California—and of rapid transitions between the two—will likely increase with atmospheric greenhouse gas concentrations. The rising risk of historically unprecedented precipitation extremes will seriously test California’s existing water storage, distribution, and flood protection infrastructure.
Although it might sound absurd to those who still recall five years of withering drought and mandatory water restrictions, researchers and engineers warn that California may be due for rain of biblical proportions — or what experts call an ARkStorm. … In heavily populated areas of the Los Angeles Basin, epic runoff from the San Gabriel Mountains could rapidly overwhelm a flood control dam on the San Gabriel river and unleash floodwaters from Pico Rivera to Long Beach, says a recent analysis by the U.S. Army Corps of Engineers.
A landslide that dumped about 6 million cubic yards of rock and debris across California Highway 1 near near Big Sur, California, in May 2017 was the result of drought followed by deluge, a team of scientists say. … The researchers determined that water replaces air in the tiny spaces between soil particles, which greatly increased the pressure on those particles, speeding up the rate of collapse.
When 2019 started, California’s snowpack was at 67%. Now it’s at over 136% and rising. The atmospheric rivers that are dumping rain along coastal California are also dumping massive amounts of snow in the state’s Sierra Nevada.
Many no longer recall the Great Midwest Flood despite its record-breaking precipitation, flooding and $13 billion price tag. Sure, 1993 seems like a long time ago, but I believe the reason the flood has left most people’s memory is because, over the last 25 years, the nation has experienced one devastating, record-breaking flood after another. Our memories are diluted by the frequency of such events.
At the end of 2017, several local rice farmers teamed up with researchers for a pilot program known as “Fish in the Fields” through the Resource Renewal Institute, a nonprofit research and natural resource policy group, to see what would happen when fish were introduced to flooded rice fields. Now in its second year of experiments, researchers have concluded that it works, with methane – a climate-changing byproduct of rice agriculture much more detrimental than carbon dioxide – being reduced by about two-thirds, or 65 percent, in flooded fields that had fish in them.
Major dams in California are five times more likely to flood this century than the last one due to global warming, a new study finds, possibly leading to overtopping and catastrophic failures that threaten costly repairs and evacuations. That means Californians can expect more disasters like the Oroville Dam, whose overflow channel failed in 2017 after days of flooding had filled state reservoirs to 85% of their capacity.
The Colorado River has been dammed, diverted, and slowed by reservoirs, strangling the life out of a once-thriving ecosystem. But in the U.S. and Mexico, efforts are underway to revive sections of the river and restore vital riparian habitat for native plants, fish, and wildlife. Last in a series.
Gov. Stephen Roe Lewis of the Gila River Indian Community said in a statement Thursday that a decision by House Speaker Rusty Bowers to move forward with a contentious water bill threatens the community’s plan to support the drought agreement. The Gila River Indian Community’s involvement is key because it’s entitled to about a fourth of the Colorado River water that passes through the Central Arizona Project’s canal.
An atmospheric river storm that walloped the Bay Area on Thursday, causing traffic snarls, flood scares and at least one major mudslide that wrecked homes and cars, has finally left Northern California. … The biggest storm of the winter so far also delivered something quite valuable: a boost to the Sierra Nevada snowpack to 102 percent of its historical average for April 1. In other words, California already has the equivalent of an average winter’s snow supply, with six weeks still left to go in this year’s winter rain and snow season.
The interrelated nature of water issues has given rise to a management approach that integrates flood control, environmental water, and water supply. The Yuba Water Agency manages its watershed in this kind of coordinated manner. We talked to Curt Aikens, the agency’s general manager, about the lessons they’ve learned from this “integrated management” approach.
Thursday, the National Oceanic and Atmospheric Administration announced that El Niño — the periodic warming of the tropical Pacific Ocean, with weather consequences worldwide — has officially arrived. El Niño typically peaks between October and March, so it’s pretty late in the season for a new one to form. This year’s El Niño is expected to remain relatively weak, but that doesn’t mean this one won’t be felt — in fact, its cascading consequences already in motion.
Rep. John Garamendi, D-Solano, introduced a bill in Congress to remove a provision from the Water Resources Development Act of 1986 to allow presidents to divert disaster recovery funds during a declared state of emergency. In January, during the government shutdown, senior Defense department officials reportedly discussed with President Donald Trump the possibility of using a portion of funds set aside by the U.S. Army Corps of Engineers for civil works projects to fund 315 miles of barrier along the Mexican border.
The wet weather broke a daily rainfall record in Sacramento, with 1.6 inches of rain recorded at the Sacramento Executive Airport over 24 hours. But the state’s network of flood-control dams and levees appeared to handle the deluge without major problems. The National Weather Service issued a flood warning Wednesday morning for the Sacramento Valley, and it was expected to remain in place until 6 p.m. Thursday as heavy and moderate rainfall was forecast to continue through Thursday.
Lawyers representing the state Department of Water Resources will make their case Friday for striking portions of lawsuits over the spillway crisis filed by the city of Oroville, several farms, businesses and other plaintiffs. The state is arguing that certain “inflammatory and irrelevant” allegations should be removed from the lawsuits, including allegations about racist actions, sexual harassment and petty theft by DWR employees and conspiracy to cover up or destroy documents.
Work will soon begin on a $6 million effort to upgrade Oxnard’s wastewater treatment plant. The City Council this week awarded a contract to the Livermore-based GSE Construction Co. to upgrade facilities that are at the highest risk of failure. The project includes repairing settling tanks known as primary clarifiers, bio towers that filter waste and other equipment.
A powerful “atmospheric river” storm is expected to pummel Northern California starting Tuesday night and deliver heavy rain, gusty winds, downed trees, power outages and rough driving conditions Wednesday and Thursday. … The storm should bring up to 5 feet of new snow in the Sierra Nevada, forecasters said. The National Weather Service announced flash-flood and high-wind warnings for the Bay Area, along with Santa Cruz and Monterey counties.
Our floodplain reforestation projects are biodiversity hotspots and climate-protection powerhouses that cost far less than old-fashioned gray infrastructure of levees, dams and reservoirs. They provide highly-effective flood safety by strategically spreading floodwater. Floodplain forests combat the effects of drought by recharging groundwater and increasing freshwater supply.
The new report, “Sustainable Landscapes on Commercial and Industrial Properties in the Santa Ana River Watershed,” explores how landscape conversion on commercial and industrial properties can reduce water use, increase stormwater capture and groundwater recharge, improve water quality, and reduce greenhouse gas emissions and pesticide use.
The coring project is the initial phase of a multiyear analysis in partnership with the Utah Department of Environmental Quality, the National Park Service and the U.S. Bureau of Reclamation. The agencies have set aside $1.3 million for the study, about half going toward extracting the cores.
The Department of Water Resources reported last week that the surface level of most of the Sacramento Valley wasn’t dropping, which is incredibly good news. But it’s the kind of news that most people can not appreciate.
California’s San Joaquin River Delta is in danger of being overrun by voracious beagle-sized rodents. The state has a plan to deal with them, but it’s going to take a lot of time and money. Nutria, a large South American rodent, have become an invasive species in several states, including Louisiana, Maryland and Oregon.
Runoff from the Ventura River gave Lake Casitas some much-needed relief over the past several weeks until about five feet of muck got in the way. … Dubbed “a critical shutdown,” work to clear the buildup is expected to take through the weekend. With the forecast calling for more rain, Casitas officials said they were trying to finish as quickly as possible.
Just over half the city’s infrastructure needs are in the city’s Public Utilities Department, which is responsible for sewage, water and the city’s ambitious water recycling program, Pure Water. The city expects to have all the money it needs in those areas because they are funded by water and sewer rates. The picture is far less rosy for infrastructure that has less reliable revenue sources. The city is short $719.8 million for stormwater infrastructure — by far the biggest unfunded capital need in the city.
In the past, cyclical erosion would naturally occur — wintertime storms washed sand out to sea, while summer swells deposited it back on the beach. Besides climate change melting ice at the poles and causing sea levels to rise, strong storms such as those seen over the last few days can also pull sand out to sea. But there are also the hard structures that are having an impact, such as construction inland that stops the natural flow of sand down creeks and riverbeds to the beach.
For the first time, researchers at NASA’s Jet Propulsion Laboratory in Pasadena, California, and collaborating institutions have documented the transition of a stable, slow-moving landslide into catastrophic collapse, showing how drought and extreme rains likely destabilized the slide. The Mud Creek landslide near Big Sur, California, dumped about 6 million cubic yards (5 million cubic meters) of rock and debris across California Highway 1 on May 20, 2017.
Workers were patching Oroville Dam’s weathered concrete spillway, nearly four years before a massive crater would tear it open. Michael Hopkins, an employee at the Department of Water Resources, alleges he saw something he would never forget. A legally deaf woman was assigned to drive a truck down the spillway and listen for hollow sounds in the concrete as her colleagues performed what’s known as “chain drag testing,” Hopkins wrote in a declaration filed last week in Sacramento Superior Court.
Thursday marks two years since the first hole opened up in the Oroville Dam Spillway, triggering an emergency that forced the evacuation of nearly 200,000 people. … The new emergency spillway is covered with roller-compacted concrete that looks like a giant staircase. It is one of the biggest changes during the reconstruction of the spillway project.
With another potential government shutdown on the horizon, President Donald Trump remains coy about whether he’ll declare a national emergency to fund the border wall he promised during his 2016 campaign. This week, he told reporters that he could use that power and divert money from the Army Corps of Engineers. Democrats worry that could mean taking money away from ongoing projects in Northern California, like raising Folsom Dam.
With each storm, the rain-swollen Russian River is washing away more of a steep, muddy bank perilously close to River Road near Geyserville, prompting Sonoma County supervisors to approve Tuesday an emergency repair estimated at $250,000. Should the river wipe out the road, about 400 residents of Alexander Valley, a famed wine grape growing area, would be cut off from a connection to Highway 128 leading southwest to Geyserville and Highway 101.
Just as Carpinteria was finishing its draft ocean adaptation report, the State of California put out some gloomy news: Sea-rise levels were now expected to rise 10 feet by 2100, not 5 feet. Carpinteria will be holding an all-residents-invited workshop on February 12 to discuss the findings and possible solutions.
Anyone who has been on Balboa Island during a hard rain knows the streets can flood. The city of Newport Beach is considering replacing the island’s 1930s-era drainage system with several automated below-ground pumps. That would save on labor and costs associated with manually opening the tide gates at the end of streets and sending out portable pumps and slicker-clad city workers to dump excess storm water into the bay.
In 70 years, San Francisco as we know it could look drastically different. Gentrification, development and the other forces of urban change we fret about may be mere trifles compared to the drastic effects of climate change, including the rise of sea levels and erosion, scientists say. By 2100, rising sea levels could displace more than 480,000 people along the California coast and result in property losses upwards of $100 billion if no preventative measures are taken, according to a 2009 study by the California Climate Change Center.
A countywide effort to address sea level rise is gaining momentum after San Mateo County supervisors took steps to form a new government agency to manage flooding, sea level rise, coastal erosion and stormwater infrastructure this week. By expanding the San Mateo County Flood Control District’s responsibilities … officials have looked to facilitate coordination between jurisdictions as they set their sights on a new set of challenges for water infrastructure projects.
In September of 2018, the Public Policy Institute of California (PPIC) released the report, “Managing Drought in a Changing Climate: Four Essential Reforms”, which asserted there are five climate pressures affecting California’s water… The report recommends four policy reforms: Plan ahead, upgrade the water grid, update water allocation rules, and find the money.
Several areas of the Oroville Dam and lake are undergoing extensive renovations and improvements, and the Oroville Recreation Advisory Committee met Friday to hear reports from the various member organizations overseeing them. … Aaron Wright of the California Department of Parks and Recreation said that several of the recently reopened areas near the dam have received a good amount of traffic.
A new approach to flood management around the San Francisco Bay could trim maintenance costs for water agencies, restore habitat for endangered species, and help protect against rising seas. What links the three? Sediment. Winter storms push sediment down creeks that flow into the Bay and, long ago, these waterways fanned out when they reached the edge. Sediment settled there, nourishing tidal baylands — salt marshes and mudflats that are rich in wildlife, and also buffer the shore from storm surges, the highest tides, and sea level rise. Today few of these low-lying tidal baylands remain.
The strongest Pacific storm of the season will lash California through Saturday with high winds, feet of Sierra snow, and heavy rain that could trigger flash flooding, debris flows and rockslides. If that wasn’t enough, another colder storm is waiting in the wings behind this first system.
January storms bolstered a drought-stressed Lake Casitas, but officials say burned hillsides continue to cause problems to capturing water. About 8 inches of rain fell near Casitas Dam in January. That pushed the area slightly above normal for this time of year… But now, as rain slams into burned hillsides, debris and ashy muck floods into the diversion facility along with the water.
Five dams across California – including one in Lake County that forms Lake Pillsbury – have been listed as key for removal by an advocacy group in the effort to stop the extinction of native salmon and steelhead. In response to what it calls a “statewide fish extinction crisis,” which indicates 74 percent of California’s native salmon, steelhead and trout species are likely to be extinct in the next century, the fish and watershed conservation nonprofit organization California Trout on Tuesday released its list of the top five dams prime for removal in the golden state.
What was supposed to be a great flood control project that kept homes safe in the South Bay has turned into a nightmare for many homeowners. Repair crews continue to work on Ridgemont Drive in San Jose, where they are replacing brick pillars residents claim were damaged by the pounding to the flood control project along the Silver Creek. Homeowners are footing the bill for the repairs and say someone else should be paying.
Congressmen John Garamendi and Doug LaMalfa have reintroduced legislation to provide farmers access to discounted rates under the National Flood Insurance Program. The bipartisan Flood Insurance for Farmers Act of 2019 (H.R.830) would also lift the de facto federal prohibition on construction and repair of agricultural structures in high flood-risk areas designated by the Federal Emergency Management Agency.
After many years of hard work, North Coast dam removal efforts are now rapidly accelerating. On Friday, Pacific Gas and Electric Co. announced that it is pulling the application to relicense the Potter Valley Project, a series of two dams and a large diversion on the Upper Eel River. On Feb. 6, the California Water Resources Control Board is coming to Arcata to take comments on their final 401 (Clean Water Act) permit to remove four dams on the Klamath River. What does this all mean? Are we really about to see the Eel and Klamath River dams come down?
The proposed tunnel path stretches 35 miles from west of Elk Grove to just below Discovery Bay. The tunnels would take water from three intakes along the Sacramento River to existing aqueducts south of Discovery Bay, and then the water will be sent to Southern California. Along the proposed path, there are at least 22 levees that would sit above the tunnels…. The concern is not so much the levees themselves, but the kind of soil that is below the levees.
New data released measure changes in land subsidence in the Sacramento Valley over the past nine years, finding the greatest land surface declines in Arbuckle. According to the Sacramento Valley GPS Subsidence Netwook Report and accompanying fact sheet … land in the Arbuckle area has sunk 2.14 feet compared with baseline measurements recorded in the same location in 2008, according to a press release from the Department of Water Resources.
It took more than a decade to create, but a revised state definition of wetlands and procedures to protect them from dredge-and-fill activities requires still more work to make the plan more clear and to reduce its impact on farmers, ranchers and foresters.
Early last year, construction started on a $90 million project to build seven miles of setback levees and floodplains to protect Hamilton City from floods on the Sacramento River. … The new barriers are much farther from the riverbanks—as far as a mile away in places. In some respects, the concept is absurdly simple: During heavy rains or spring snowmelt, rivers need room to expand; moving levees back from riverbanks provides it. Setback levees not only reduce the need for newer and larger dams and levees, but also restore the natural habitat.
Sonoma County water officials, under order from the state to improve the capacity of their sewage system, say a valve malfunction and leaky pipes resulted in a string of spills this month that released 2.7 million gallons of waste and stormwater, some of which flowed into local creeks and San Pablo Bay.
The city of San Diego decided Tuesday to back California Atty. Gen. Xavier Becerra’s lawsuit that seeks to hold the Trump administration accountable for sewage and other toxic flows that routinely spill over the border from Tijuana and foul beaches as far north as Coronado. The City Council voted unanimously in closed session on Tuesday to join the legal action. Councilman Chris Cate was absent.
Maintaining functional wetlands in a 21st-century landscape dominated by agriculture and cities requires a host of hard and soft infrastructures. Canals, pumps, and sluice gates provide critical life support, and the lands are irrigated and tilled in seasonal cycles to essentially farm wildlife. Reams of laws and regulations scaffold the system.
A new NASA study shows that warming of the tropical oceans due to climate change could lead to a substantial increase in the frequency of extreme rain storms by the end of the century. The study team, led by Hartmut Aumann of NASA’s Jet Propulsion Laboratory in Pasadena, California, combed through 15 years of data acquired by NASA’s Atmospheric Infrared Sounder (AIRS) instrument over the tropical oceans to determine the relationship between the average sea surface temperature and the onset of severe storms.
The California Department of Fish and Wildlife and the State Water Resources Control Board, or SWRCB, are extending outreach to the cannabis cultivating community with presentations at four permitting workshops in Northern California. The presentations are ideally suited for cannabis cultivators, consultants and anyone interested in the topic. SWRCB will cover policy and permitting, and other important information. Computers will be available for applicants to apply for water rights and water quality permits.
City leaders met with Oregon state legislators this past week to discuss the earliest stages of funding an $80 million plan to fortify the city’s water system and ensure drinking water is free from harmful algal toxins. The need for cleaning out cyanotoxins and developing a backup water system became apparent to city officials last summer when Salem experienced a month-long drinking water crisis.
Unable to cope with wildfire claims, PG&E made good on its vow to file for bankruptcy Tuesday, launching a perilous journey with major implications for ratepayers, investors, state officials and the thousands of California wildfire victims who are suing the utility. Citing “extraordinary financial challenges” and a rapidly deteriorating cash position, Pacific Gas and Electric Co. and its parent PG&E Corp. sought Chapter 11 bankruptcy protection in an electronic filing shortly after midnight.
The nutria invasion of California continues. Greg Gerstenberg, a biologist and nutria operations chief with the California Department of Fish and Wildlife, said 372 nutria had been trapped in the state as of Jan. 10. Bruce Blodgett, executive director of the San Joaquin Farm Bureau Federation, wants farmers and others who maintain levees to be aware.
From 1,000 feet above, you can see surf pounding long sequences of seawalls and riprap rocks protecting homes, the ocean sometimes appearing to threaten structures, despite the installed barriers. Where there are cliffs with no homes, the waves gnaw away at the bluffs, moving the beaches at their base farther inland. The extreme king tides of the past few days occur only once or twice a year, but they offer a glimpse of what normal tides will be eventually be doing daily as the result of rising sea levels.
With four straight days of rain, the Los Angeles River has come alive. Thanks to Measure W, which was passed by voters last November, projects will be funded and infrastructure will be built to capture, treat and recycle all this rain water. Measure W is predicted to raise $300 million per year for L.A. County off a new property tax for what is called impermeable areas. That would be the driveway of your house, concrete patio or anything that stops water from going into the ground.
Southern California Edison — fighting dozens of legal claims related to the Montecito mudslides that followed the Thomas fire — is putting the blame on Santa Barbara County and Caltrans for failing to prepare for deadly debris flows they knew were inevitable.
Bureau of Reclamation Commissioner Brenda Burman today named Ernest A. Conant director of the Mid-Pacific Region. Conant has nearly 40 years of water law experience and previously served as senior partner of Young Wooldridge, LLP.
Heavy rains this week left Lake Mendocino, the North Bay region’s second-largest reservoir, with an extra 2 billion gallons of water that until now officials would have been obliged to release into the Russian River and eventually the Pacific Ocean. Thanks to a $10 million program that blends high-tech weather forecasting with novel computer programming, the Army Corps has the latitude to retain an additional 11,650 acre feet of water, and Lake Mendocino has now impounded a little more than half that much.
At least one state agency has indicated it will not issue necessary permits to allow federal officials and a Fresno-based water district to begin construction to raise the height of Shasta Dam. In addition to facing opposition from the state, the project could also face fresh hurdles from Congress, which this year came under control of Democrats. In a letter to the Fresno-based Westlands Water District, the State Water Resources Control Board says raising the height of Shasta Dam would violate state law.
Around the world, vanishing glaciers will mean less water for people and crops in the future. … Glaciers represent the snows of centuries, compressed over time into slowly flowing rivers of ice. … But in a warming climate melting outstrips accumulation, resulting in a net loss of ice.
Because of the potential of massive flooding, the Army Corps of Engineers is rushing to begin a $500-million repair project for Whittier Narrows Dam, classified as the highest priority of any of the 13 “high risk” dams in the country. Nearly three years ago, the Army Corps of Engineers elevated the risk of failure from “high urgency” to “very high urgency” after a re-inspection revealed a greater threat of erosion and breach that would cause massive downstream flooding to one million Southern California residents in the event of a severe storm event.
Locally, the primary impacts of climate change on people can broadly be broken into four categories: sea level rise, drought, flood and wildfire. The good news is, work and planning are already well underway to mitigate impacts, though it’s hard to say how much of an effect the measures will have, and how much those agencies – and their constituents – will be willing to spend on them. But this much is clear: Local, state and federal agencies are taking climate change seriously, and treating it like the potentially existential threat that it is.
The whims of political fate decided in 2018 that state bond money would not be forthcoming to help repair the subsidence-damaged parts of Friant-Kern Canal, the 152-mile conduit that conveys water from the San Joaquin River to farms that fuel a multibillion-dollar agricultural economy along the east side of the fertile San Joaquin Valley.
The California Department of Fish and Wildlife (CDFW) today released the Delta Conservation Framework as a comprehensive resource and guide for conservation planning in the Sacramento-San Joaquin Delta through 2050. The framework provides a template for regional and stakeholder-led approaches to restoring ecosystem functions to the Delta landscape.
Most of the native habitat in California’s San Joaquin Desert has been converted to row crops and orchards, leaving 35 threatened or endangered species confined to isolated patches of habitat. A significant portion of that farmland, however, is likely to be retired in the coming decades due to groundwater overdraft, soil salinity, and climate change. A new study … found that restoration of fallowed farmland could play a crucial role in habitat protection and restoration strategies for the blunt-nosed leopard lizard and other endangered species.
A simple web search will pull up nearly a million articles, videos and photos featuring Frank Gehrke. He’s no fashion icon like Kim Kardashian or a dogged politician like Gov. Jerry Brown. But he has broken a lot of news. … For 30 years, you might have seen Gehrke on TV, the guy trudging through snow with a measuring pole, talking about how deep the pack is each winter on the evening news. He retired from his post as the state’s chief snow surveyor in December, but he’s not letting go of his snowshoes and skis anytime soon.
The McCormack-Williamson Tract restoration project, a 1,500 acre site, lowers the levees on the north side of the island to allow the river to overtop into the site. On the south side, DWR will alleviate the surge flows that pose a risk to neighbors by opening small holes in the levee. 2018 saw the completion of construction of a levee to protect existing infrastructure on the site, as well as progress on habitat restoration plans. For the next phase, DWR will strengthen the interior levees and take steps toward opening the site up to tidal flows.
The work to provide Yuba-Sutter with the highest level of flood protection possible isn’t yet complete, but the levees are much better today, having had the oversight expertise of the head of the Sutter Butte Flood Control Agency. After more than seven years with the agency, SBFCA Executive Director Mike Inamine announced he would be leaving this week for a job with the California Department of Water Resources.
The confluence of California’s two great rivers, the Sacramento and the San Joaquin, creates the largest estuary on the West Coast of the Americas. Those of us who live here call it, simply, the Delta. It is part of my very fiber, and it is essential to California’s future. That’s why we must save it.
Arcadis has announced it will partner with Kiewit Infrastructure West and PERC Water to serve as the progressive design-build team for the Sustainable Water Infrastructure Project (SWIP) in the City of Santa Monica, Calif. Currently, the city partially relies on imported water to meet its water needs. This project will allow the city to take a major step toward water independence, supporting existing programs designed to create a sustainable water supply
Rising sea levels are not only going to increasingly flood parts of Long Beach, but could leave the most vulnerable neighborhoods uninhabitable within a generation or two, according to a city presentation Monday night that drew more 300 residents concerned about the city’s — and their own — future.
The century-old PG&E—which employs 20,000 workers and is slated to play an integral role in California’s clean energy future—also has a checkered history and little goodwill to spare with the public. On Thursday, the PUC launched an investigation into the utility’s safety record and corporate structure, as Bay Area residents shouted, protested and urged commissioners not to give them a bailout.
Southern California’s native scrublands are famously tough. … They evolved along with long, hot summers, at least six rainless months a year and intense wildfires. But not this much fire, this often. The combination of too-frequent wildfires and drought amplified by climate change poses a growing threat to wildlands that deliver drinking water to millions.
Registration is now open for the Santa Ana River Watershed Conference set for March 29 in Fullerton. The daylong event will be held at Cal State Fullerton. Join us to discuss the importance of the Santa Ana River Watershed and how, through powerful partnerships, resilient solutions can be found to improve the quality and reliability of the region’s water supply.
Officials have given President Trump a plan to divert funds designated for Army Corps of Engineers projects in California and Puerto Rico to help pay for a wall along the southern border, a leading member of Congress said Thursday. … The projects include raising the height of Folsom Dam on the American River in Northern California, protecting Lake Isabella in Kern County from leaking as a result of earthquakes, enlarging the Tule River and Lake Success in the Central Valley and building shoreline protections in South San Francisco.
Last week, the relicensing effort reached a milestone when FERC issued its Final Environmental Impact Statement. The environmental document essentially looks at what changes a licensee has proposed for a specific project, the impacts of those changes and provides conditions they must meet if awarded a new license.
One of the Water Education Foundation’s most popular events, Water 101 offers a once-a-year opportunity for anyone new to California water issues or newly elected to a water district board – and anyone who wants a refresher — to gain a deeper understanding of the state’s most precious natural resource. It will be held Feb. 7 at McGeorge School of Law in Sacramento.
Pacific Gas and Electric Co. is seeking to auction off its Potter Valley Project hydropower plant, which contains two reservoirs and dams, to a new operator. PG&E cited increasing operation costs, a competitive energy market and lower energy generation needs as reasons for its decision. Questions remain as to what extent Marin County water supplies will be affected by a potential change in ownership and operation of the 110-year-old hydropower plant more than 100 miles to the north.
A storm will slide into Southern California with soaking rain by the weekend, putting burn-scar areas at a renewed risk for life-threatening flooding and mudslides. People living near or downhill of the Creek, La Tuna, Thomas, Woolsey and Whittier burn areas should make sure they stay up to date on the latest forecast and heed all evacuation issues that are ordered by local officials.
Featuring artists, photographers, first-person narratives, historical and scientific essays, long-form journalism and fiction, the magazine revolves around the fascinating people and wonders that make up the greater Bay – Delta region of California.
Crescent City Harbormaster Charlie Helms said he and commissioners are worried about sediment being deposited in the marina and the potential impact it could have on the commercial fleet. A new environmental document predicts the level of sediment released as a result of dam removal will be similar to what the river carries downstream during an average year.
At the confluence of the San Joaquin and Tuolumne rivers, a few miles west of Modesto, work crews removed or broke several miles of levee last spring and replanted the land with tens of thousands of native sapling trees and shrubs. It’s part of a growing emphasis on reconnecting floodplains to rivers so they can absorb floodwaters. This shift in methodology marks a U-turn from past reliance on levees to protect cities and towns.
In February, following a string of severe natural disasters in 2017, Congress provided a record $16 billion for disaster mitigation — building better defenses against hurricanes, floods and other catastrophes. Eleven months later, the Trump administration has yet to issue rules telling states how to apply for the money.
In the latter half of 2018, both the federal and state governments released new climate change assessments that outline the projected course of climate change and its potential effects on water resources. At the December meeting of the California Water Commission, staff from the Department of Water Resources and the Delta Stewardship Council were on hand to present an overview of the newly released assessments.
There’s every reason to expect that 2019 will be far better, largely because of Measure W, which was passed by voters in November. The initiative imposes a Los Angeles County parcel tax that will generate $300 million per year to reduce pollution from runoff and capture storm water to add to the water supply.
A new study out of Stanford University finds that 10 percent of the total carbon dioxide spewed from California, Oregon, Washington and Idaho for power generation this century is the result of states turning to fossil fuels when water was too sparse to spin electrical turbines at dams.
During severe winter storms, Cold Springs Creek above Montecito turns into a torrent of mud, uprooted trees and shed-size boulders as it drains three square miles of sheer mountain front. The only thing protecting the people, homes and businesses below is a low dam that the Army Corps of Engineers built in 1964 at the mouth of the creek’s canyon, forming a basin between the steep banks to catch the crashing debris.
A crew was out this week spreading grass seed and straw on hillsides in west Redding to prevent erosion where the Carr Fire burned last summer. So far the California Conservation Corps crew has finished spreading erosion control on about 20 acres out of a planned 1,640 acres where work is planned.
Dam inspectors overlooked technical details during safety evaluations that could have identified structural problems with the Oroville Dam spillway before it broke during heavy rains in February 2017, according to an assessment ordered by the Federal Energy Regulatory Commission. FERC assembled an independent, six-person panel to assess the safety inspections that are required every five years for the roughly 2,500 hydropower facilities that FERC regulates.
The storm that pelted Southern California on Thursday flooded roadways, triggered mud and debris flows in the burn areas of Malibu and dumped several inches of snow on mountain passes, shutting down the 5 Freeway through the Grapevine for much of the day. … Since the start of the water year on Oct. 1, downtown Los Angeles has received more than 4 inches of rain — more than the average amount of precipitation for this time of year and significantly more than last year, when about 1/10 of an inch of rain fell.
At the confluence of the San Joaquin and Tuolumne rivers, a winter of heavy rains could inundate about 1,200 acres of riverside woodland for the first time in 60 years. That’s by design: Here, a few miles west of Modesto, work crews removed or broke several miles of levee last spring and replanted the land with tens of thousands of native sapling trees and shrubs.
Not long after the Gold Rush of 1849, California became a state and made its capital in Sacramento. It seemed a logical choice. The city was served by the two of the state’s biggest rivers, the Sacramento and American, at a time when a lot of goods and people moved via river traffic. It was somewhat centrally located. But, there was the occasional flood. Every spring, the snowcap in the Sierras melts, leaving a significant amount of water in the Central Valley, where Sacramento sits. The city engineered a levee system to control the seasonal flooding.
The U.S. Army Corps of Engineers will begin advertising for bids on a Feather River West Levee construction project estimated at $77 million. According to a staff report published earlier this year by the Central Valley Flood Protection Board, the project would make improvements to approximately 4.9 miles of levee.
A cold front that brought wind and heavy rain to California on Thursday unleashed debris flows in fire-ravaged neighborhoods, triggering evacuations and school closures as crews up and down the state rescued people trapped in homes and cars and, in one case, a man clinging to a tree in the Los Angeles River.
A storm moving into California on Thursday brought rain that threatened to unleash debris flows in wildfire burn areas and snow that could cause travel problems in the Sierra Nevada. A watershed emergency response team worked in the area of Paradise to identify spots that could be prone to flash floods and mudslides.
California will see widespread rain and heavy Sierra Nevada snowfall through midweek, potentially bringing travel problems and raising the risk of damaging runoff from wildfire burn scars, forecasters said Tuesday.
The financially imperiled federal flood insurance program is days away from expiring, but the insurance industry and other advocates said they hold out little hope that Congress will solve the program’s problems anytime soon.
First came fire. Now the floods? With late-season wildfires increasingly common in California, the twinning of the two catastrophes is becoming an alarmingly regular fear. Officials in both Northern and Southern California are planning this week for the possibility of a second set of disasters while still battling the flames of the first.
Marysville is one step closer to being the most protected city in the Central Valley from flooding, experts say, with the recent completion of a stretch of slurry wall in part of the ring levee project. Last week, crews completed a portion of the Marysville Ring Levee project – Phase 2A North – located between the 10th Street and Fifth Street bridges.
Federal regulators are raising new concerns about the troubled Oroville Dam, telling California officials their recently rebuilt flood-control spillways likely couldn’t handle a mega-flood. Although the chances of such a disastrous storm are considered extremely unlikely — the magnitude of flooding in the federal warning is far greater than anything ever experienced — national dam safety experts say the Federal Energy Regulatory Commission’s concerns could have costly repercussions for California.
State officials said Wednesday the damaged Oroville Dam flood-control spillway is ready for the rainy season, and will be able to fully blast water down its half-mile long concrete chute for the first time in nearly two years if lake levels rise. Work on the adjacent emergency spillway is ongoing.
Two-hundred members of the California Conservation Corps from as far away as San Diego and Fortuna descended on a Delta levee bordering southwest Stockton’s Van Buskirk Park on Tuesday to practice their flood control skills. … CCC Communications Director Dana Howard, also on hand to observe Tuesday’s training exercise, took the opportunity to announce the recent opening of the Corps’ first newly constructed facility in Northern California in decades.
Just because El Niño may be lurking off in the tropical Pacific, does that really offer much of a clue about what kind of rainy season California can expect in Water Year 2019?
Will a river of storms pound the state, swelling streams and packing the mountains with deep layers of heavy snow much like the exceptionally wet 2017 Water Year (Oct. 1, 2016 to Sept. 30, 2017)? Or will this winter sputter along like last winter, leaving California with a second dry year and the possibility of another potential drought? What can reliably be said about the prospects for Water Year 2019?
At Water Year 2019: Feast or Famine?, a one-day event on Dec. 5 in Irvine, water managers and anyone else interested in this topic will learn about what is and isn’t known about forecasting California’s winter precipitation weeks to months ahead, the skill of present forecasts and ongoing research to develop predictive ability.
In recent decades, San Franciscans have embraced the reborn Embarcadero waterfront as kind of front yard, and at noon on a weekday it crowds with tourists, skateboarders, entrepreneurs and other locals. But underneath wheels and feet, three and a half miles of seawall is cracking and crumbling, vulnerable to rising waters or a major earthquake.
Scientists are becoming more adept at linking climate change to worsening storms, even in real time, but federal officials aren’t using that information to help prepare for natural disasters. The study of how global warming makes extreme weather more intense or more frequent—called attribution science—has evolved rapidly.
Federal, state and local officials issued the warning Wednesday at a press conference in Santa Barbara, adjacent to Montecito where a January debris flow from the Thomas Fire burn scar devastated homes, killed 21 people and left two missing.
Less than a year after a roaring mudslide left 23 people dead or missing in Montecito, state and federal officials will gather in Santa Barbara County on Wednesday to issue a warning to all Californians: Massive summer wildfires have left many communities facing an increased risk of flooding. The announcement, part of California Flood Preparedness Week, comes as the state’s wet season is quickly approaching.
When it comes to flood fighting, the men and women who’ve worked for Levee District 1 have seen it all – from tragedy to triumph. Those still around have plenty of stories to tell. The public will have an opportunity to hear some of those stories during the district’s 150th anniversary celebration on Oct. 26. The district is responsible for operations and maintenance of 16.15 miles of levee spanning from Pease Road to Marcuse Road in Sutter County.
State officials said today [Oct. 18] they are “racing” to implement erosion control measures before the start of the rainy season on hills left bare by the Carr Fire. … [Clint] Snyder [assistant executive officer, Central Valley Regional Water Quality Control Board] said the erosion control is focused on protecting human life and property, preserving drinking water sources in the Sacramento River and wildlife.
About 130 private property owners around Lake Shasta could be forced to move if a plan to raise the height of Shasta Dam goes forward. That was just one of the pieces of information that came out of a community meeting about the project Monday night in Lakehead. … About 90 people attended the meeting to hear from U.S. Bureau of Reclamation officials about how Lakehead residents and business owners will be affected if the height of the dam is raised 18½ feet.
Explore the Sacramento River and its tributaries through a scenic landscape as we learn about the issues associated with a key source for the state’s water supply.
All together, the river and its tributaries supply 35 percent of California’s water and feed into two major projects: the State Water Project and the federal Central Valley Project. Tour participants will get an on-site update of Oroville Dam spillway repairs.
A state of emergency was declared for the bayfront community of Belvedere after investigation of a damaged seawall revealed the problem is larger than the city had realized. Consulting engineers told the city late last month it should act immediately to prevent the seawall along Beach Road — which protects the area from flooding — from shifting any further or collapsing into San Francisco Bay.
Whether fire or earthquake, mudslide or drought, natural disaster is an inextricable part of the California experience. And just as it upended Francis’s life, disaster threatens to snarl the next governor’s plans. Emergency response is rarely discussed as a campaign issue, but once in office, a governor’s on-the-ground handling of unexpected catastrophe and its immediate aftermath can define his legacy, for good or bad.
The state Department of Water Resources still expects to meet its quickly approaching Nov. 1 deadline to have all concrete placed on the Oroville Dam’s main spillway. Crews began by placing permanent concrete slabs at the bottom of the spillway of the nation’s tallest dam, making their way to the top. Now, the upper chute is about three-quarters of the way complete, DWR reported in a moderated media call on Wednesday.
The Colorado River Basin is more than likely headed to unprecedented shortage in 2020 that could force supply cuts to some states, but work is “furiously” underway to reduce the risk and avert a crisis, Bureau of Reclamation Commissioner Brenda Burman told an audience of California water industry people.
During a keynote address at the Water Education Foundation’s Sept. 20 Water Summit in Sacramento, Burman said there is opportunity for Colorado River Basin states to control their destiny, but acknowledged that in water, there are no guarantees that agreement can be reached.
Gov. Jerry Brown has signed into law Sen. Jim Nielsen’s bill to form a citizens advisory commission for the Oroville Dam. Senate Bill 955 creates a 19-member commission to provide a forum for residents and state officials to discuss reports, maintenance and other ongoing issues related to the dam.
Fixing the Oroville Dam spillway wrecked by storms in 2017 will cost $1.1 billion — a $455-million hike from initial estimates — the state Department of Water Resources announced Wednesday. The swelling cost can be blamed on design changes that have been made over the last 16 months and damage to the facility near Oroville, Calif., that was far more extensive than initially presumed, the department said.
As communities grapple with record breaking rainfall and flooding there have been a slew of new technologies, known as ‘disaster apps,’ to help alert people and keep them safe. Now, Austin, Texas, is developing its own system, one it hopes will expand to other places. The city is in a part of Texas already known as Flash Flood Alley.
Butte County has filed another lawsuit against the state Department of Water Resources, this time for damages from the Oroville Dam crisis that continue to increase. The county is seeking compensation for damage to its roads, which heavy equipment is still utilizing for construction efforts, and also for costs associated with responding to the spillway emergency in February 2017.
A 30-foot-wide section of temporary wall on the upper chute of the Oroville Dam spillway fell over late last week, the state Department of Water Resources confirmed on Monday. The collapse did not impact construction deadlines and resulted in no injuries, according to the department.
Farmers in the Central Valley are broiling about California’s plan to increase flows in the Sacramento and San Joaquin river systems to help struggling salmon runs avoid extinction. But in one corner of the fertile breadbasket, River Garden Farms is taking part in some extraordinary efforts to provide the embattled fish with refuge from predators and enough food to eat.
And while there is no direct benefit to one farm’s voluntary actions, the belief is what’s good for the fish is good for the farmers.
The local oversight committee spearheaded by Assemblyman James Gallagher and Sen. Jim Nielsen had some suggestions this week for the state Department of Water Resources on its assessment of the Oroville Dam. This comes about a month after the committee met for the first time on July 18.
Eighteen months after the dramatic failure of the spillways at Oroville Dam in Northern California, a disaster that led to the evacuation of 188,000 people, construction is on schedule to complete the concrete work in the main spillway by Nov. 1. … On Monday, Lake Oroville was 51 percent full, or 73 percent of its historic average for this date.
Crews have begun to place the final layer of concrete this week on the upper portion of the Oroville Dam spillway chute. This marks a “crucial milestone,” said Tony Meyers, project manager for the recovery project for the state Department of Water Resources, in a moderated media call on Wednesday.
When rivers flood now in the United States, the first towns to get hit are the unprotected ones right by the river. The last to go, if they flood at all, are the privileged few behind strong levees. While levees mostly are associated with large, low-lying cities such as New Orleans, a majority of the nation’s Corps-managed levees protect much smaller communities, rural farm towns and suburbs such as Valley Park [Missouri].
The independent review board hired by the state Department of Water Resources to put outside eyes on an assessment which will play a large role in the future operations of the Oroville Dam has released its first report. Suggestions for infrastructure changes like the construction of a second gated spillway are expected to be considered through what DWR is calling a comprehensive needs assessment.
Fran Obrigewitsch pulled up the most recent photo on her iPhone of the Oroville Dam spillway, taken just two days before it started to collapse last year. Her first chance to catch another glimpse was Monday, as the state Department of Water Resources reopened the stretch of Oro Dam Boulevard East that offers views of the spillway to the general public for the first time since the crisis began.
A historic first meeting between state Department of Water Resources officials and local leaders as a committee solidified that the community will have a say in the future of Oroville Dam operations. … The committee is being led by co-chairs Assemblyman James Gallagher, Sen. Jim Nielsen and DWR’s John Yarbrough.
Phase two of construction on the Oroville Dam’s main and emergency spillways is speeding along, as the Oroville Mercury-Register got to see up close in a tour on Wednesday guided by state Department of Water Resources officials. With half of the main spillway currently a work in progress, the department’s goal is to have the structure ready to use, if needed, by Nov. 1 — just under four months away.
For years, there has been a movement in California to restore floodplains, by moving levees back from rivers and planting trees, shrubs and grasses in the low-lying land between. The goal has been to go back in time, to bring back some of the habitat for birds, animals and fish that existed before the state was developed.
Concrete pouring is due to start Monday on the second half of the Oroville Dam emergency spillway “splash pad.” That’s the only milestone reported Wednesday during a media call on progress to repair the emergency spillway and main spillway, which sustained serious damage in February 2017.
Among California rivers, the Yuba is one of the most dramatic. Draining the Sierra Nevada just north of Lake Tahoe, it is steep and flashy – one of the most flood-prone rivers in the state. Yuba River floods have killed people – notably in 1955, 1986 and 1997 – and climate change is making such floods more likely.
The Army Corps of Engineers will spend $74 million to enlarge Success Lake east of Porterville, doubling flood protection for the city and boosting the water supply for farmers. It’s not the only Army Corps project in the majority leader’s district that got major funding. Lake Isabella in Kern County is getting $258 million for a dam safety modification project.
The U.S. Army Corps of Engineers and Rep. Doris Matsui’s office announced that the [Sacramento] region has been allocated nearly $1.8 billion to strengthen levees and raise Folsom Dam. … In total, the Army Corps allocated $17 billion for flood projects around the country Thursday, as part of a congressional appropriation in February.
The Diversion Pool below Oroville Dam and the trails on both sides of it will be partially open Friday through the Fourth of July, the Department of Water Resources announced Wednesday. The report came during a conference call to update media on the status of work to repair the spillways, which were heavily damaged in February 2017.
The Senate on Monday approved a $145 billion spending bill to fund the Energy Department and veterans’ programs for the next budget year. … The bill includes $43.8 billion for energy and water programs, including programs to ensure nuclear stockpile readiness and spur innovation in energy research. The bill also funds flood-control projects and addresses regional ports and waterways.
The Army Corps of Engineers announced Monday that the additional money would be available to the Hamilton City Flood Damage Reduction and Ecosystem Restoration Project in the current fiscal year. … It is the first in the nation being constructed under the Corps’ guidelines to develop projects that include both flood risk reduction and ecosystem restoration.
An excavator slid down the Oroville Dam spillway slope on Sunday morning, resulting in minor injuries to its operator, the state Department of Water Resources confirmed on Wednesday. Erin Mellon, assistant director of public affairs for DWR, said that the operator immediately got back to work after the accident, which is currently under investigation by the department and Kiewit Infrastructure West Co., the lead contractor for the construction project.
Two bills proposed by Assemblyman James Gallagher, one of which would have taken the State Water Project from the state Department of Water Resources and another which would have provided funding for school resource officers, failed on Friday to pass through the Assembly Appropriations Committee.
The second and final phase of reconstruction continues at the Oroville Dam spillways. … A flight over the location last week during a break in Butte County Sheriff’s Office helicopter training exercise, showed that much original concrete at the top of the chute has been removed, along with the walls.
While work to repair the main Oroville Dam spillway will largely be done by Nov. 1, in response to a question, the Department of Water Resources clarified that work on the emergency spillway will continue into 2019.
Construction work began just after midnight Tuesday morning on phase 2 of the repairs to the Oroville Dam main spillway. The Department of Water Resources had been granted permission by federal and state regulators to start work May 8, and contractor Kiewit Infrastructure West didn’t waste any time.
The Federal Emergency Management Agency recently told north state congressmen Doug LaMalfa and John Garamendi that the agency is still reviewing whether the state Department of Water Resources is eligible for further reimbursement to fix the Oroville Dam spillway.
Since the 1940s, the Hawaiian island of Kauai has endured two tsunamis and two hurricanes, but locals say they have never experienced anything like the thunderstorm that drenched the island this month. “The rain gauge in Hanalei broke at 28 inches within 24 hours,” said state Rep. Nadine Nakamura of the North Shore community.
The extreme weather swings experienced by Californians the past six years — a historic drought followed by drenching winter storms that caused $100 million in damage to San Jose and wrecked the spillway at Oroville Dam — will become the norm over coming generations, a new study has found.
While some construction continues at Oroville Dam, the bulk of work under phase two is expected to begin May 8, state Department of Water Resources officials said Wednesday in a monthly media update call. This comes as DWR submitted an updated 2017-2018 Lake Oroville operations plan on Tuesday to the Federal Energy Regulatory Commission and the California Division of Safety of Dams for approval.
We explored the lower Colorado River where virtually every drop of the river is allocated, yet demand is growing from myriad sources — increasing population, declining habitat, drought and climate change.
The 1,450-mile river is a lifeline to 40 million people in the Southwest across seven states and Mexico. How the Lower Basin states – Arizona, California and Nevada – use and manage this water to meet agricultural, urban, environmental and industrial needs was the focus of this tour.
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After a spring storm system dumped 5 to 7 inches of rain into the Feather River basin over the weekend, state officials said Sunday they likely won’t have to use the partly rebuilt flood control spillway at Oroville Dam after all.
Northern California is bracing for a major spring storm that is expected to dump several inches of rain on burn-scarred areas of wine country and could present the first test of the partially repaired spillway at the nation’s tallest dam.
California voters may experience a sense of déjà vu this year when they are asked twice in the same year to consider water bonds — one in June, the other headed to the November ballot.
Both tackle a variety of water issues, from helping disadvantaged communities get clean drinking water to making flood management improvements. But they avoid more controversial proposals, such as new surface storage, and they propose to do some very different things to appeal to different constituencies.
Flash floods, rising rivers and mudslides are possible across Northern California as a storm that’s more January than April barrels in from the Pacific, the National Weather Service warns. “This is not the time of year when we see these big precipitation events,” said Daniel Swain, a climate scientist at UCLA.
It’s a recipe for flooding. A tropical storm pulling moisture from the South Pacific, often called an atmospheric river, will deliver mild temperatures and heavy rain to the snow-covered northern Sierra Nevada later this week.
Oroville Dam operators said Tuesday they may have to release water over a partially rebuilt spillway for the first time since repairs began on the badly damaged structure last summer. Department of Water Resources officials said anticipated storms could trigger releases this week or next.
With a pounding storm headed for California, state water officials said Tuesday that Oroville Dam’s crumbled spillway could get its first test since being rebuilt in the wake of last year’s near-catastrophe.
Nearly a year after record Midwestern floods killed at least five people and caused $1.7 billion in damage, a secretive lobbying effort funded by Illinois and Missouri drainage districts is underway to roll back flood regulations, documents show.
California’s drought-to-deluge cycle can mask the dangers Mother Nature can have in store. During one of the driest March-through-February time periods ever recorded in Southern California, an intense storm dumped so much rain on Montecito in January that mudflows slammed into entire rows of homes.
The flows have been shut off through the Hyatt Powerhouse at the base of Oroville Dam, and the lake is beginning to rise. And that’s all by design, according to the state Department of Water Resources.
Heavy rain in the Sierra foothills pushed a small dam within San Francisco’s Hetch Hetchy water system to the brink of failure Thursday, sending a brief scare through the rural region where roads were closed and a few dozen residents were forced to evacuate.
Kiewit Infrastructure West Co. said on Wednesday that construction of the underground wall below the Oroville Dam emergency spillway completed in early March. The 1,450 feet long wall, drilled 35-65 feet into bedrock, is one preventative measure against the type of erosion that occurred there last year, should the emergency spillway ever be used again.
A bill introduced by Sen. Jim Nielsen that would create a citizens advisory commission for the Oroville Dam was amended in the Senate last week. This comes as the Oroville Dam Coalition has been lobbying over the past year for more community involvement, including through a citizens oversight committee, as a reaction to the spillway crisis in February 2017.
Peering out at sea, scientists last weekend saw a formidable sight: the spawning of a wet and wild storm the size of 30 Mississippi Rivers, headed towards California. The anticipation has officials all over the Golden State watching the skies and wondering: Will my town get a fraction of rain, or a bucketful?
The state Department of Water Resources submitted its plan to the Federal Energy Regulatory Commission on Tuesday to address findings in the independent forensic report. The extensive forensic report, released on Jan. 5, blamed “long-term systematic failure,” including faulty design and insufficient maintenance, for the Oroville Dam crisis in February 2017.
Flood control officials are asking a judge to impose sanctions against an outspoken critic who they say has forced them to waste hundreds of thousands of dollars of public money on litigation the critic referred to as his “hobby.”
California Gov. Jerry Brown signed legislation Monday that seeks to beef up dam inspections following a near disaster that caused the evacuation of almost 200,000 people living downstream from the tallest one in the United States. The measure implements several recommendations from experts who reviewed the crisis at Oroville Dam last year.
Though the final phase of repair work on the main spillway at Lake Oroville is now on the back burner until spring, Department of Water Resources officials said crews are making significant progress on repairing the emergency spillway.
Until February 2017, the calls that came to Butte 2-1-1 ranged from quelling stress, and finding support organizations, to locating low-cost diapers. But for a few weeks after the Oroville Dam spillway disaster, the calls were desperate, seeking evacuation routes, hunting for surviving relatives, and wondering when residents could return home.
Coastal wetlands such as Bolinas Lagoon in Marin County, the marshes along Morro Bay and the ecological preserve in Newport Beach can purify the air, cleanse urban runoff before it flows into the sea and reduce flooding by absorbing storm surges like a sponge. But there’s little room left for this ecosystem along the changing Pacific Coast, as the sea continues to rise and Californians continue to develop the shore.
Modifications were made to construction plans for an upcoming phase of the Marysville Ring Levee project. … The Marysville Levee Commission, the Central Valley Flood Protection Board and the U.S. Army Corps of Engineers are proposing changes to their original plans for an area located along the existing levee to the southwest of Marysville, between the Fifth Street Bridge and E Street Bridge.