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Articles by admin

American Avocet on managed, former salt ponds in the South Bay. Photo: Roopak Bhatt, USGS
26
May

One-of-a-Kind Stories

Our magazine’s media motto for many years has been “Where there’s an estuary, there’s a crowd.” The San Francisco Estuary is a place where people, wildlife, and commerce congregate, and where watersheds, rivers and the ocean meet and mix, creating a place of unusual diversity. In choosing to tell the Story of the Estuary in just nine major topics and a few browsing categories, so many unique stories from our archives have been missed. Like tales about the region’s various research vessels that collect data on conditions in the water or trawl for fish of management concern. Or the stories bringing to life the experiences of people swimming or fishing or boating on the water, or walking the trails and...
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dam spillway oroville
26
May

Supplying Water

Ever since the state and federal water projects were built in the 1930s and 1940s, California has captured snowmelt in foothill reservoirs, and moved the fresh water from dam releases and river outflows to parched parts of the state via aqueducts hundreds of miles long. A convoluted system of ancient water rights and newer mandates governs who gets what water and how much. An equally complex infrastructure – including gates, pumps, screens, curtains and barriers – is deployed to deliver the fresh water to farms, cities, and industries, sometimes far from headwater sources. The state’s infamous war over water continues, whether it’s over fish versus farms, a peripheral canal or twin tunnels, or the perception that flows out to the...
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25
May

Tackling Pollution

Though the Clean Water Act did an amazing job of reducing wastewater and stormwater pollution of the San Francisco Estuary, some contaminants remain thorny problems.  Legacy pollutants like mercury washed into the watershed from upstream gold mining, PCBs from old industrial sites, and selenium from agricultural drainage in the San Joaquin Valley, linger in the sediments, nearly impossible to clean up.  Emerging contaminants from contemporary lifestyles such as herbicides, flame retardants, and fire-fighting foams are being linked to human health problems, while microplastics are turning up everywhere from fish guts to creek bottoms to newborns. More recently, nutrients from both farm and sewage discharges have become a particular challenge for the Estuary. Long protected by its sediment-clouded waters, a recent...
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image of bioretention site
25
May

Greening Stormwater

When rain runs off into the San Francisco Estuary from streets, parking lots, and other hard surfaces, it can carry a toxic soup of contaminants—oil, grease, and myriad other chemicals that may start off as pollutants in the air but end up on the ground where they can they then be washed into water bodies in storms. For the past three decades, Bay Area scientists have tracked and analyzed these contaminants to determine exactly what they are and how they affect water quality. Water quality agencies, meanwhile, have developed increasingly stringent regulations—such as TMDLs, or Total Maximum Daily Loads and other mechanisms—to try to control them. In more recent years, the practice of Green Stormwater Treatment—the use of soil and...
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salmon
25
May

Sustaining Salmon

By the time Estuary News debuted in 1993, the Central Valley’s once abundant runs of Chinook salmon had been severely depleted by dams, diversions, pollutants and predation by non-native fish. Sacramento River winter-run fish were federally listed as endangered in January 1994; the Central Valley spring run was listed as threatened in 1999 and the fall run is identified as a species of concern. Protecting and rebuilding these populations has been a lodestar for many, if not most, of the efforts to restore the Bay and Delta, beginning with 1992’s Central Valley Project Improvement Act. Over the decades, armies of scientists, engineers and water managers have sought to better understand and mitigate the threats to this iconic fish, while lawyers,...
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25
May

Restoring Habitats

Early efforts to restore the San Francisco Estuary, before the federal Clean Water Act and Endangered Species Act changed management priorities in the 1970s, focused on preserving marshes for waterfowl hunting, protecting river reaches for fishing, and growing trout and salmon in hatcheries. By that time, the estuarine ecosystem had been so severely altered by draining, diking, damming, farming, urbanization, species invasions and water supply projects that there was little left to restore. Restoration to some pristine former state was soon deemed an impossibility. Nevertheless, new mandates forced planners to consider restoring a variety of habitats used by endangered fish, birds and wildlife, to manage dam releases to provide flows and cold water to migrating species, and to reduce pollution...
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25
May

Controlling Invasions

San Francisco Bay has been called the most invaded Estuary in the world. From Chinese mitten crabs to zebra mussels from Europe to Atlantic cordgrass from the East Coast, the Estuary has been colonized by myriad animals and plants from other parts of the country and world. Water hyacinth now clogs Delta waterways; Asian clams regularly consume all the fish food in the water column; water primrose is carpeting over native flora. Many alien animals arrived in ships’ ballast water or aquarium water dumped by unknowing home hobbyists while plants like Atlantic cordgrass were introduced intentionally by the U.S. Army Corps of Engineers in restoration projects, from which the plants then hybridized with Pacific cordgrass, creating a menacing invader. But...
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Fish
09
May

Chasing Flows

How much of the water from the Estuary’s creeks and rivers should be left to run into and through the Delta to support fish and protect water quality—and how much can be held behind dams or diverted to irrigate farms and supply cities—has been a central management question for decades, and has informed several ambitious efforts to repair the Estuary’s decimated ecosystem. In 1992, the same year that Estuary News began publication, Congress passed the Central Valley Project Improvement Act (CVPIA), allocating 800,000 acre-feet of water per year to the environment and kicking off years of squabbling and litigation over how the water was counted and when and where it could be used. Later efforts included the 1994 Bay-Delta Accord, and...
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Delta Smelt
09
May

Saving Smelt

Ever since this tiny, 2-3-inch-long, silver fish was first listed as threatened in 1993, and then later as endangered in 2009, efforts to understand and protect Delta Smelt have been central driver of San Francisco Estuary management efforts. Over the decades, as the species has become increasing scarce, the focus has changed from understanding how the smelt use Estuary habitats, and its lifecycle, to political debates about fish versus farms and the proverbial water wars. Over time, managers labored to keep the species away from the water project pumps and to enhance its estuarine habitats via water quality standard known as “X2”. More recently, efforts have revolved about last ditch attempts to protect the gene pool in labs, culture fish,...
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American Avocet on managed, former salt ponds in the South Bay. Photo: Roopak Bhatt, USGS
21
Mar

Riding the Restoration Waves: My Estuarine Journey

After 16 years of working in the San Francisco Estuary, including serving as a manager for key regional agencies, I have ridden several waves of restoration. I’ve seen big changes in how restoration is done, who does it, and who benefits—whether it’s a fish or bird on the verge of extinction or a young person from an urban community learning green job skills on the shoreline. Our view of what matters continues to expand as connections that were once cloudy—between habitat restoration and environmental justice, between upland and bay habitats—come into focus. We’re not just trying to create small patches of tidal marsh but to piece together a huge mosaic of habitats from working lands to wetlands. We now know...
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15
Feb

Let’s Not Forget Suisun Marsh

I started sampling the fishes of Suisun Marsh in 1979 because one of my UC Davis graduate students was looking for a place to study tule perch, a live-bearing native fish. We found not only a lot of tule perch in the marsh, but also an abundance of other native fishes. Clearly, this was a good place to study species for which we had little information at that time. Two things helped with our new project. First, sampling boats could be launched less than an hour’s drive from campus. Second, the California Department of Water Resources needed a study to examine effects of new tidal gates on fish. The gates are designed to retain fresher water in the marsh to...
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25
Oct

Estuary Summit Pivots from Science to People

“Make the unseen more visible in your work,” urged Amanda Bohl, opening speaker for the largely cameras-off audience of 600 virtually assembled for the 2021 State of the San Francisco Estuary Summit this October. The Delta Stewardship Council staffer’s remarks at the 15th biennial conference, usually a two-day, science-and -policy-heavy networking event but this year an eight-hour Zoom summit, referred to how many things we all work on or people we work with everyday remain invisible. Some of these often unseen yet important things brought up over the course of the day: the indigenous lands upon which so many efforts to restore the Estuary or “manage” its resources take place; the people in local communities left out of government decision-making...
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23
Mar

Opinion: Bayshore Breathing Space for All

I live just a couple miles from Berkeley Aquatic Park, but it took a shelter-in-place order to get me to go back there after a 20-year hiatus. I had visited the park a couple years after I moved to the Bay Area and found it deserted and a bit gloomy. This time, it was vibrant and full of life, from the bright yellow gumplants blooming along the shoreline to the great blue heron feeding in the shallows and shiny-black cormorants diving deep underwater, then returning to the surface to dry their wings in the sun. And the people! There were kids playing on the playground, cyclists zipping along the Bay Trail, and frisbee golfers politely asking me to move out...
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13
Dec

Virtual RMP Annual Meeting Real-Life Success

Instead of a fancy room with plush seats, a catered lunch, and speakers at a podium sharing their presentations on a big screen, attendees at the 27th Annual Meeting of the Regional Monitoring Program for Water Quality in San Francisco Bay (RMP) experienced the report-out entirely virtually on their own computer screens, thanks to the Covid pandemic. Nevertheless, and despite Zoom burnout, the October event was a success, with many attendees voicing a preference for the virtual format. Hot science take homes from the presentations were plentiful. Several sessions covering both Atlantic and Pacific Coasts explored how scientists continue to focus on sediment movement through watersheds and estuaries, especially with its long-standing transport of hitch-hiking contaminants. In the Bay Area,...
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13
Dec

Whatever Happened To…?

Reporters check up on past stories. Click to jump or scroll and read. Mercury in Trout Diet Derelict Ships Continued Hazard Sticking to it with Spartina COVID Complicates Encampment Cleanups Nesting Caspian Tern Turnover Cormorants Thrive on Shuttered Alcatraz Buckler Brouhaha Boils On Corte Madera Makes a Start Closure on Klamath Dams Sampling insects in stream. Photo: David Rundio, NOAA Mercury in Trout Diet The steelhead of Big Sur seemingly live in fish paradise. The water is cold and clean, the creeks are alive with insect larvae, and migrating to the Pacific involves an easy swim from spawning grounds shaded by redwood forest. A new study, however, finds that fish in this pristine habitat are laden with an insidious toxin—mercury....
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01
Oct

Equity with Intention ~ Podcast

It might be a stretch for many of us to see the relationship between keeping the Estuary healthy and racism in our communities. But leaders and staffers in organizations and agencies across the San Francisco Bay Area have been steadily working to make this connection, and recent events – with the death of George Floyd and erupting protests – have made them ask themselves what more do they need to do?  In this first segment of Estuary Voices, the San Francisco Estuary Partnership’s Liz Juvera asks four women working at the equity forefront to share their observations, struggles, and insights. Their observations reflect the different stages of their careers, and the different types of organizations they work in, including a...
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22
Sep

Creeks & Quilts for Climate

The Estuary News team has been working behind the scenes with partners on a cool new build out of our sister Acclimatewest project called the California Climate Quilt. Acclimatewest.org is a pilot storytelling site that gathers stories about creeks, sloughs, and shorelines adapting to sea level rise, describing who lives around them and what concerns they have about their environment, as well as exploring the local natural and human history of the area. At the same time, in a world driven by short attention spans and social media, we realized that you may have a lot of individual stories of resilience or climate adaptation action to share! So this summer we began digitally sewing a California Climate Quilt and issued...
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18
Jun

Sinking Islands Capture Carbon Credits

As sea levels rise and land in the Delta sinks, agencies and landowners are recognizing that levees alone will not protect critical fresh water supplies and infrastructure. Encouraged by a recently vetted new method for calculating carbon offsets from wetlands, a flurry of new climate adaptation projects on publicly owned islands strewn along the central Delta corridor aim to defend against sea-level rise, restore habitat, and reduce greenhouse gas emissions. Until recently, the prospect of selling carbon credits in the Delta remained fairly abstract.
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18
Jun

PERSPECTIVES

Never before has it been more important to imagine and invest in a future that is decidedly different than the world we are facing today. The COVID-19 pandemic and the protests sparked by police brutality have laid out in stark terms the underlying systemic inequalities and racism in our society that make poor, elderly, black, and brown people socioeconomically vulnerable and expose them to trauma and risk.  These vulnerabilities will only be exacerbated by climate change, unless we work together now to achieve multiple objectives: address inequality and systemic racism; create equity in terms of health and access to opportunity for low-income communities of color; and invest in strategies to reduce the impacts of extreme storms, flooding, sea-level rise, wildfires,...
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