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SF scientists build robotic storm samplers to track pollutants before they reach the Bay

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SF scientists build robotic storm samplers to track pollutants before they reach the Bay


SAN FRANCISCO (KGO) — Environmental Scientist Kayli Paterson from the San Francisco Estuary Institute is hitting the road with colleague David Peterson and a trunk full of water sampling robots.

“Yeah, I think the max we’ve ever done was five. But the sites are very close together. Oh, there it is. Hopefully it samples well,” says Paterson as she turns the mobile sampling lab onto a private oak-lined road.

They’re closing in on a watershed creek flowing through the hillsides near the San Andreas Lake reservoir, west of Highway 280 in Millbrae, part of the larger watershed that eventually drains into San Francisco Bay.

“So, we’ve got our sampler. Look at the battery. Hook that up, red and black. This is a 12-volt lithium battery, and it powers our sampler for probably about six to seven days,” she explains, showing off a self-contained unit miniaturized into a portable case.

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MORE: Futuristic Fight Club: VR-controlled boxing humanoid robots battle in San Francisco

The black cases are their latest innovation in stormwater science. Robotic samplers anchor in key sections of the watershed to monitor not only flow, but also the chemicals and pollutants washing downstream toward the Bay.

“And this is a front-line pollution sampler. It’s getting the stormwater before it enters the Bay. And so, we want to know what’s coming into the Bay and getting these samplers out there in more locations will give us a better idea of where we might have issues, where a hotspot is, or maybe a previously unknown contaminant,” says Paterson.

“It’s important to get out that fast,” her colleague David Peterson adds. “You know, in these storms as they’re happening, because the water is picking up pollutants in real time, and we need to be there to capture them.”

When we first met Peterson several years ago, he and another Estuary Institute team were sampling water along the Bay shoreline by hand, a technique that’s still valuable. But to cover more ground, Kayli and a group of collaborators began developing the robotic samplers over recent storm seasons.

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Kayli and David start by chaining the unit itself to a tree near the creek bank. The system employs remote-controlled pumps that draw samples from the creek and store them in onboard containers. The software controlling the volume and frequency can be operated from a phone app.

MORE: New study of San Francisco Bay fish confirms concentrations of PFAS aka ‘forever chemicals’

One of the key targets in this study is a group of so-called “forever chemicals” known as PFAS, synthetic compounds that persist in the environment and have been detected in widespread areas of the Bay.

“And we capture samples and send them off to analytics labs across the country. Typically, universities or private labs will process these for us,” Peterson explains.

For these two stormwater detectives, it’s a mission that requires a combination of speed and patience**, chasing flowing water** through creeks and storm drains, sampling as they go.

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“So, we’re looking for areas – the point of this is to do source control. Ultimately, we want to be able to trace this back to a possible source,” says Kayli Paterson.

And potentially prevent a source of toxic pollution from reaching San Francisco Bay and our Bay Area ecosystem.

More than a dozen of the robots were given names in a special contest, including the Big Sipper and the Tubeinator.

Copyright © 2026 KGO-TV. All Rights Reserved.



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San Francisco, CA

Demonstrators march in San Francisco on International Women’s Day

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Demonstrators march in San Francisco on International Women’s Day


People came out to speak out and speak up in San Francisco on International Women’s Day.

In San Francisco, demonstrators rallied and marched through Union Square, calling for not only the protection of women’s rights, but opposition to federal actions.

“I’m out here today for women’s rights, for all human rights,” Lacey, from the East Bay, said.

For over 100 years, people have recognized March 8 as International Women’s Day, a global day celebrating the social, economic, cultural and political achievements of women.

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The day also marks a call to action for gender equality. This year’s message varied, with some carrying signs calling for reproductive justice, women for peace not war and no war on Iran.

“We’re here today because the Trump regime’s attack on women and women’s rights is unacceptable and we have to rise of our millions we have to encourage that rising in our millions to defeat this,” Sully with Refuse Fascism said.

Sully was one of the speakers at the rally.

“We are going to be vehemently opposing the Trump regimes attack on Iran,” she said.

Meantime, Deborah and Paige who had their own take on the day.

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“We had the idea of dressing up like suffragettes to pay homage to our foremothers who led this very brave protest movement,” Deborah said.

They came with a reminder of their own.

“We want to remind people that protest movements do work,” Deborah said.

“Particularly, now that voting is really coming under attack with the Save Act,” Paige added.

After rallying, many in the group marched, vowing to keep speaking up.

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Olympian Eileen Gu heads up Chinese New Year parade in her native San Francisco

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Olympian Eileen Gu heads up Chinese New Year parade in her native San Francisco


San Francisco rang in the Year of the Fire Horse with its annual Chinese New Year parade Saturday evening, with thousands of revelers cheering on hometown hero and Olympic champion Eileen Gu as its grand marshal.

The procession featured drums, dancing and floats celebrating the vibrancy of the Chinese American community in the oldest celebration of its kind outside Asia and one of the largest.

Civic leaders and performers paraded from downtown to Chinatown through popping firecrackers. Children marched wearing inflatable horses while lion dancers and martial artists waved to the crowd.

The parade was first organized in the 1860s by Chinese immigrants who came to work during the California Gold Rush and wanted to share their culture through a “favorite American tradition,” the parade, according to the event website.

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While the celebration always draws massive crowds, attendees were especially excited for Gu, who drew loud cheers.

Vanessa Chan of neighboring South San Francisco said she represents “cultural infusion.”

“She’s really wonderful. … She’s funny, sunny, and she represents positivity,” Chan said.

Gu appeared partway through the parade in a red dress, sitting in a red convertible adorned with flowers. The color is a symbol of good fortune and prosperity for the Chinese holiday.

Parade organizer Wiliam Gee said Gu was picked for the role by the middle of last year — before she competed in the 2025 Milan-Cortino Winter Games, where she won two silver medals and one gold, making her the most decorated freestyle skier in Olympic history.

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“The year of the horse brings a lot of new life and energy,” Gee said. “She definitely represents Chinese heritage and definitely is an icon.”

Gu has come under scrutiny for her decision to represent China in competition, and Megan Chin, also of South San Francisco, said she felt the Olympian was attacked unfairly.

“When you’re multicultural and you want to celebrate both heritages, it’s great to be happy for someone if they want to celebrate their other heritage as well,” Chin said. “I am proud of her.”

Calvin Lui, who attended with his young son, said he loved Gu’s representation of the city where she was born and raised as well as her Chinese heritage.

“That’s her identity, both countries — so she gets the best of both worlds,” Lui said.

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PHOTOS: 2026 San Francisco Chinese New Year Parade

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PHOTOS: 2026 San Francisco Chinese New Year Parade


Sunday, March 8, 2026 12:26AM

LIVE: San Francisco Chinese New Year Parade

SAN FRANCISCO (KGO) — Thousands are flocking to San Francisco on Saturday to join Lunar New Year festivities and watch the Chinese New Year Parade.

WATCH: SF Chinese New Year Parade 2026 on ABC7

The streets will be filled with dancing, floats and so much more.

Here’s a look at some of the most memorable moments through images.

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Copyright © 2026 KGO-TV. All Rights Reserved.



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