Nothing reveals just how much the upper Estuary's seesaw of tides and freshwater flows is micro-managed than prolonged drought, and the resulting fiddling with barriers, gates, and water quality standards to prevent the ocean tides and salinity from intruding too far upstream. Come summer, managers begin to talk fearfully of "losing control of the Delta" and the dreaded outcome: salt water too near the export pumps...Read More
When the storm hit, it was lucky that my parents had a habit of leaving one car on each side of the Carmel River as they commuted from Big Sur into Monterey each day. The 1995 El Niño rainfall had pushed the Carmel River into hundreds of homes, and destroyed the Highway 1 bridge that connected Big Sur with the rest of the world. Most Big Sur residents were trapped during the week it took the Federal Emergency Management Agency (FEMA) to repair the freeway bridge. But in the era before Zoom, my mother couldn’t just stay home from nursing school. So my parents trekked past the mud of submerged artichoke fields on the river’s south bank and onto the...Read More
It’s now five weeks since Governor Newsom’s Delta tunnel plan was unveiled in a Draft Environmental Impact Statement. Time enough for the main ideas to sink in; time enough for familiar players to strike their familiar positions; and time enough for some of us to burrow deep into its tables, figures, and appendices. To recap briefly: water taken from new intakes near Hood on the Sacramento River would enter a tunnel and flow 45 miles underground before being lifted again to charge up the California Aqueduct at Bethany Reservoir. The tunnel capacity would be 6,000 cubic feet per second, which, if operated full time, could provide 4.3 million acre-feet a year for export to San Joaquin Valley farms and to...Read More
For the first time in decades, California’s federal estuary management and water quality programs are getting a big bump in bankroll. Priority actions in the newly updated Estuary Blueprint, a 25-action consensus plan for improving the health of San Francisco Bay and the Delta, are poised to take advantage of a new influx of federal money. “We’re fortunate with timing,” says San Francisco Estuary Partnership (SFEP) environmental planner Darcie Luce. Completed this spring, the 2022 Blueprint includes some well-thought-out actions oriented toward greening grey infrastructure, making the region more resilient to climate change, and improving equity in adaptation planning and projects — all of which are federal priorities. The new money will flow toward Estuary Blueprint actions and related projects...Read More
At the summit, the BAAQMD’s David Ralson described three examples of redoing infrastructure to break down barriers separating human ecology and the natural environment. Three such initiatives are underway in the area around San Leandro Bay, the locale of RBD’s Estuary Commons project. “The I-880 corridor from High Street to 98th Avenue contains the worst-off disadvantaged communities in the Bay Area in terms of health outcomes,” he said. “They are also subject to sea-level rise and groundwater inundation.” Former wetlands are now filled with gray infrastructure. Hidden urban creeks, like San Leandro/Lisjan Creek, offer a pathway to reconnection: “People will say, ‘We don’t know about this creek; we don’t have access.’ But their grandparents may have fished or played in...Read More
McKelvey Park’s curious design reveals its double use: a baseball field that is also a flood detention basin designed to protect Mountain View from Permanente Creek's next major 50- to 100-year flood.Read More
Early on the morning of October 9, 2017, a firestorm roared with unforgiving speed across a swath of northeastern Santa Rosa. The unincorporated community of Larkfield lay directly in its path. One-hundred and sixty homes there burned to the ground. Three and a half years later, Larkfield is still being rebuilt—in some ways better than ever, thanks in part to an ambitious and innovative program by the Sonoma County Water Agency to bring sewer service to the modest, tight-knit community at the foot of the Mayacamas Mountains. New homes of all shapes, sizes, styles, and colors, each designed to suit the owner’s preference, are interspersed with dozens more in varying stages of construction. On a recent weekday afternoon, building and...Read More
“They don’t represent current operations,” says Ukiah-based consultant Andrew Jahn, lead author of the analysis reported in the September 2020 issue of San Francisco Estuary and Watershed Science. Current operations at the State Water Project (SWP) and the Central Valley Project (CVP) can reverse flows in the Old and Middle rivers, diverting salmon on their way to the ocean towards the projects. Existing salmon loss estimates also fail to account for a likely Old River hotspot for predators, drawn to the influx of salmon and other fish near the two water projects. Evidence of this hotspot lies in the numerous acoustic tags from young salmon to be found in the sediment, which were presumably defecated by striped bass, as well as...Read More
Historically, most fish passages have been designed to help native salmon return to their upstream habitat and spawning grounds, with little consideration for other migrating species such as sturgeon and lampreys. “There is an assumption that if you just build a fish passage structure, fish will go thorough it, but that is not always the case,” says Department of Water Resources fisheries biologist Zoltan Matica, who conducted the review. “The challenge is to understand that this isn’t only a physical barrier, it can be also a mental barrier.” For example, some species that engage in schooling behavior, such as shad, may refuse to even enter a structure if it limits them to passing one at a time. According to the...Read More
As COVID-19 continues its unrelenting rampage, wastewater plant managers and university researchers are ramping up their efforts to monitor wastewater for SARS-CoV-2, the virus that causes the disease. Their goal is to give public health departments a powerful tool: an early warning system for new outbreaks in communities. In Yosemite Valley, for instance, wastewater testing revealed the presence of the virus in the community before swab testing of individuals showed a problem. “There’s a time delay before cases appear in a community and in the medical system,” says Katy Graham, a graduate student at Stanford University who is leading development of laboratory methods that will link trends and concentrations of the virus’ RNA (ribonucleic acid) in wastewater to the virus’...Read More
Not only is 97% of the nitrogen removed, but also trace pharmaceuticals. “You just have to focus on where the water is going,” says environmental engineer Aidan Cecchetti, referring to the UC Berkeley-Stanford-ReNUWIt team’s experimentation with three components of flow through the levee system—under the surface, over the surface, or into the air (through evapotranspiration). “In the wastewater pumped to the subsurface, you see full removal of every contaminant except phosphorous.” What’s most astonishing is how much of the work occurs in that subsurface drainage through the first 10% of levee slope. What happened further along the slope mattered less, the team found; plants only absorbed 8-12% of the nitrogen, with willows being the highest performing species. “Predicting performance is...Read More
In July, the Metropolitan Transportation Commission and the Association of Bay Area Governments released the draft of Plan Bay Area 2050, a 30-year plan to guide growth in the nine-county region. “The biggest new integration in the plan is a set of investments to protect our Bay and ocean shorelines from rising sea levels,” says MTC’s Dave Vautin. The plan calls for just under $20 billion in investments ranging from seawalls and traditional levees to horizontal levees and wetland restoration to protect communities and infrastructure. “The draft showcases how that system of infrastructure improvements could protect 98% of all homes at risk over the next 30-years, as well as all major highways, railways and the vast majority of offices and...Read More
In May, despite the now normal issues of groups gathering for video calls and virtual PowerPoints, the San Francisco Bay Restoration Authority voted unanimously to fund the early stages of a massive new infrastructure project along the North Richmond shoreline with a grant of $644,709. The shoreline is now one step closer to becoming home to a horizontal, or living, levee that provides both flood protection and habitat.Read More
Driving over the Bay flats toward the Dumbarton Bridge’s western approach in San Mateo County it’s easy to imagine how a few feet of sea level rise could submerge the roadway. The bridge touches down only 750 feet from the shoreline, and the approach skims just above the fill it’s built on. Countywide, a vulnerability assessment found that in a mid-range sea level rise scenario, property worth $34 billion would be flooded on the bayshore and the coast north of Half Moon Bay. “It’s not realistic to think that each city could address these challenges singlehandedly,” says County Supervisor Dave Pine...Read More
From head-on collisions in the 1980s to crippling congestion now, Highway 37 is a familiar headache for highway engineers. Fearing that engineers might not take full account of the vast marsh restorations underway in the area, the Sonoma Land Trust, the Coastal Conservancy, and others joined in a State Route 37-Baylands Group. In 2017, the group laid down markers: Whatever is done with the east-west highway must also improve the passage of tides and stormwaters north and south, not further impede those flows.Read More
In 2017, a perfect storm hit the City of San Jose in Santa Clara County. Coyote Creek, which winds through the heart of the city, overtopped its banks, flooding businesses and hundreds of homes up to depths of six feet. Thousands of people were evacuated and property damages exceeded $70 million. “If I’ve learned anything in my 25 years here, it’s that you have to give creeks room to move, which also creates more resilience to climate change,” says Valley Water's Afshin Rouhani...Read More
“Even a city with as many resources as San Francisco has can’t do this [alone],” says the director of the Port of San Francisco’s Waterfront Resilience Program Lindy Lowe, speaking of the climate change threats looming over the City by the Bay. “It’s too big.” The perils San Francisco faces include three-to-ten feet of sea-level rise this century, a sharp increase in extreme heat days, and more severe floods and drought. As city officials grapple with today’s severe housing and inequality crises, they are also confronting the need to preserve aging infrastructure...Read More
Corte Madera creek is an outsized problem for people in Ross and other towns built right up to its banks. “Our peaceful creek turns into a rushing torrent in winter,” says Chris Martin, who grew up in the small Marin County town. Finding a fix has been contentious since 1971, when the U.S. Army Corps of Engineers put a mile-long concrete flood control channel through Ross.Read More
The farms that create the economic engine of Pajaro Valley operate at different scales. Some growers are small, while others have labels you might recognize from the grocery store: Martinellis, Driscolls, California Giant, to name a few. Regardless of the amount of acreage under management, one thing that the farmers share is that most of their water comes from the ground. How to best handle the area’s diminishing supply of groundwater has occupied local water managers for decades.Read More
“We know from a decade of doing survival studies that migrating juvenile salmon are dropping out of the system pretty much everywhere in the Delta,” says UC Santa Cruz fisheries biologist Brendan Lehman. “Physical habitat features are potentially aggregating predators and prey in ways detrimental to salmon smolts and steelhead.” The scientists report in the December 2019 San Francisco Estuary and Watershed Science that artificial light and submerged aquatic vegetation pose the most severe and widespread risks to native fishes. Plants like Brazilian waterweed form dense underwater mats across vast reaches of the Delta. These mats have nurtured a rise in predatory bass populations and force prey fish into exposed channel centers. The artificial lighting pervasive along docks and buildings...Read More
Nothing could be stranger than sitting in the dark with thousands of suits and heels, watching a parade of promises to decarbonize from companies and countries large and small, reeling from the beauties of big screen rainforests and indigenous necklaces, and getting all choked up.
It was day two of the September 2018 Global Climate Action Summit in San Francisco when I felt it.
At first I wondered if I was simply starstruck. Most of us labor away trying to fix one small corner of the planet or another without seeing the likes of Harrison Ford, Al Gore, Michael Bloomberg, Van Jones, Jerry Brown – or the ministers or mayors of dozens of cities and countries – in person, on stage and at times angry enough to spit. And between these luminaries a steady stream of CEOs, corporate sustainability officers, and pension fund managers promising percentages of renewables and profits in their portfolios dedicated to the climate cause by 2020-2050.
I tried to give every speaker my full attention: the young man of Vuntut Gwichin heritage from the edge of the Yukon’s Arctic National Wildlife Refuge who pleaded with us not to enter his sacred lands with our drills and dependencies; all the women – swathed in bright patterns and head-scarfs – who kept punching their hearts. “My uncle in Uganda would take 129 years to emit the same amount of carbon as an American would in one year,” said Oxfam’s Winnie Byanyima.
“Our janitors are shutting off the lights you leave on,” said Aida Cardenas, speaking about the frontline workers she trains, mostly immigrants, who are excited to be part of climate change solutions in their new country.
The men on the stage, strutting about in feathers and pinstripes, spoke of hopes and dreams, money and power. “The notion that you can either do good or do well is a myth we have to collectively bust,” said New Jersey Governor Phil Murphy whose state is investing heavily in offshore wind farms.
“Climate change isn’t just about risks, it’s about opportunities,” said Blackrock sustainable investment manager Brian Deese.
But it wasn’t all these fine speeches that started the butterflies. Halfway through the second day of testimonials, it was a slight white-haired woman wrapped in an azure pashmina that pricked my tears. One minute she was on the silver screen with Alec Baldwin and the next she taking a seat on stage. She talked about trees. How trees can solve 30% of our carbon reduction problem. How we have to stop whacking them back in the Amazon and start planting them everywhere else. I couldn’t help thinking of Dr. Seuss and his truffala trees. Jane Goodall, over 80, is as fierce as my Lorax. Or my daughter’s Avatar.
Analyzing my take home feeling from the event I realized it wasn’t the usual fear – killer storms, tidal waves, no food for my kids to eat on a half-baked planet – nor a newfound sense of hope – I’ve always thought nature will get along just fine without us. What I felt was relief. People were actually doing something. Doing a lot. And there was so much more we could do.
As we all pumped fists in the dark, as the presentations went on and on and on because so many people and businesses and countries wanted to STEP UP, I realized how swayed I had let myself be by the doomsday news mill.
“We must be like the river, “ said a boy from Bangladesh named Risalat Khan, who had noticed our Sierra watersheds from the plane. “We must cut through the mountain of obstacles. Let’s be the river!”
Or as Harrison Ford less poetically put it: “Let’s turn off our phones and roll up our sleeves and kick this monster’s ass.”
4th California Climate Change Assessment Blues
by Isaac Pearlman
Since California’s last state-led climate change assessment in 2012, the Golden State has experienced a litany of natural disasters. This includes four years of severe drought from 2012 to 2016, an almost non-existent Sierra Nevada snowpack in 2014-2015 costing $2.1 billion in economic losses, widespread Bay Area flooding from winter 2017 storms, and extremely large and damaging wildfires culminating with this year’s Mendocino Complex fire achieving the dubious distinction of the largest in state history. California’s most recent climate assessment, released August 27th, predicts that for the state and the Bay Area, we can expect even more in the future.
The California state government first began assessing climate impacts formally in 2006, due to an executive order by Governor Schwarzenegger. California’s latest iteration and its fourth overall, includes a dizzying array of 44 technical reports; three topical studies on climate justice, tribal and indigenous communities, and the coast and ocean; as well as nine region-specific analyses.
The results are alarming for our state’s future: an estimated four to five feet of sea level rise and loss of one to two-thirds of Southern California beaches by 2100, a 50 percent increase in wildfires over 25,000 acres, stronger and longer heat waves, and infrastructure like airports, wastewater treatment plants, rail and roadways increasingly likely to suffer flooding.
For the first time, California’s latest assessment dives into climate consequences on a regional level. Academics representing nine California regions spearheaded research and summarized the best available science on the variable heat, rain, flooding and extreme event consequences for their areas. For example, the highest local rate of sea level rise in the state is at the rapidly subsiding Humboldt Bay. In San Diego county, the most biodiverse in all of California, preserving its many fragile and endangered species is an urgent priority. Francesca Hopkins from UC Riverside found that the highest rate of childhood asthma in the state isn’t an urban smog-filled city but in the Imperial Valley, where toxic dust from Salton Sea disaster chokes communities – and will only become worse as higher temperatures and less water due to climate change dry and brittle the area.
According to the Bay Area Regional Report, since 1950 the Bay Area has already increased in temperature by 1.7 degrees Fahrenheit and local sea level is eight inches higher than it was one hundred years ago. Future climate will render the Bay Area less suitable for our evergreen redwood and fir forests, and more favorable for tolerant chaparral shrub land. The region’s seven million people and $750 billion economy (almost one-third of California’s total) is predicted to be increasingly beset by more “boom and bust” irregular wet and very dry years, punctuated by increasingly intense and damaging storms.
Unsurprisingly, according to the report the Bay Area’s intensifying housing and equity problems have a multiplier affect with climate change. As Bay Area housing spreads further north, south, and inland the result is higher transportation and energy needs for those with the fewest resources available to afford them; and acute disparity in climate vulnerability across Bay Area communities and populations.
“All Californians will likely endure more illness and be at greater risk of early death because of climate change,” bluntly states the statewide summary brochure for California’s climate assessment. “[However] vulnerable populations that already experience the greatest adverse health impacts will be disproportionately affected.”
“We’re much better at being reactive to a disaster than planning ahead,” said UC Berkeley professor and contributing author David Ackerly at a California Adaptation Forum panel in Sacramento on August 27th. “And it is vulnerable communities that suffer from those disasters. How much human suffering has to happen before it triggers the next round of activity?”
The assessment’s data is publicly available online at “Cal-adapt,” where Californians can explore projected impacts for their neighborhoods, towns, and regions.