Petaluma River

King tides and winter runoff push Petaluma River to highest recorded level in decades

Don Frances, BAY AREA NEWS GROUP

An extraordinarily strong bout of seasonal king tides and runoff from the latest rainstorm combined Friday to push the crest of the Petaluma River to the highest point in nearly the last three decades even as bay tides unleashed flooding in Marin County and other parts of the Bay Area before a weekend of rain and high winds.

The Petaluma River, one of Sonoma County’s largest tidal sloughs, had not topped its banks, but water levels surged to 8.33 feet by 1 p.m. Friday, according to a National Weather Service gauge at the D Street Bridge, where the previous recorded high was 6.4 feet in 1998.

The new record was likely to be broken again by late morning Saturday as the king tides were expected to peak amid the incoming rainstorm, said National Weather Service meteorologist Rachel Kennedy.

Read more at https://www.pressdemocrat.com/2026/01/02/king-tides-and-winter-runoff-push-petaluma-river-to-highest-recorded-level-in-decades/

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Petaluma River cleanup plan approved

Will Carruthers, NORTH BAY BOHEMIAN

On May 10, the Environmental Protection Agency (EPA) quietly signed off on a plan meant to reduce pollution in the 146-square-mile Petaluma River Watershed.

That’s right. Although the problem is rarely discussed, the Petaluma River has been listed as “impaired” by excessive levels of bacteria since 1975.

The bureaucratic document approved by the EPA is known as a Total Maximum Daily Load (TMDL). It sets levels of acceptable waste discharge from various sources in an attempt to lower the levels of fecal bacteria found in the watershed until the water is deemed clean.

While preparing the TMDL, scientists from the San Francisco Bay Regional Water Quality Control Board tested water from throughout the watershed for Fecal Indicator Bacteria to determine the amount of waste from warm-blooded mammals that has seeped into the water. Although indicator bacteria themselves are not dangerous, scientists use the strains to detect potentially dangerous levels of contamination in the water.

In a report accompanying the TMDL, water board staff identified 12 sources of pollution, which they then lumped into three general categories: human waste, animal waste and municipal stormwater runoff. In tests conducted between 2015 and 2016, water board scientists found bacteria tied to humans, horses, cows and dogs throughout the Petaluma River and its tributaries.

When asked in late 2019 about the levels of E. coli discovered in the Petaluma River, Farhad Ghodrati, an environmental scientist with the San Francisco Bay board, said the test results showed “some of the highest concentrations we have seen in the region.”

At the same time, Dr. Celeste Philips, who then served as Sonoma County’s Health Officer, warned Petaluma River users against drinking the river water or using the water for cooking due to the levels of E. coli. “Adults and children should wash hands/shower and towel dry after swimming; rinse off pets after they come into contact with the water,” Philips added.

Read more at https://bohemian.com/petaluma-river-cleanup-plan-approved/

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Too little (but not too late) for the Petaluma River

San Francisco Baykeeper Update

Updated: On March 17, 2020, Baykeeper further challenged the Regional Board’s flawed plan before the oversight agency, urging the State Water Board to reject the plan as inadequate. Baykeeper’s scientists maintain that the Petaluma River is currently so contaminated with bacteria that people will get sick swimming and paddling in the waters, and our lawyers contend that the plan fails to hold accountable all of the sewage polluters along the River.

In 1975, scientists found that the Petaluma River was so heavily contaminated with E. Coli and other bacteria that it was unsafe to have any contact with the water. The presumed sources of the bacteria included animal and human waste running off of ranches, stables, farmland, and out of broken waste water treatment and septic systems.

Today, little has changed. The Petaluma River remains dangerously contaminated, with high levels of bacteria showing up in every single water test taken in the river.

Despite the findings nearly 45 years ago, the agency responsible for protecting the watershed—the San Francisco Bay Regional Water Quality Control Board—waited until 2019 to address the Petaluma’s troubling bacteria levels.

And unfortunately, the Water Board’s new plan doesn’t take the right steps to reduce bacteria pollution in the Petaluma. The Clean Water Act mandates that agencies start by identifying the specific sources under a regulatory strategy known as a Total Maximum Daily Load (TMDL).

Though the Water Board is calling their new policy a TMDL, it doesn’t establish where the bacteria pollution is coming from, by how much the bacteria sources must be reduced, or how progress will be monitored and enforced.

“It’s misleading for the Water Board to call this a TMDL, and their approach is doomed to take decades to solve the problem,” says Baykeeper Staff Attorney Ben Eichenberg. “While Baykeeper appreciates the Board’s stated goal of making water quality in the Petaluma River better, the agency is failing its actual obligation to make the river truly safe for people.”

The Petaluma River feeds into creeks across the North Bay and Marin, and eventually connects with San Francisco Bay. It attracts boaters, paddle boarders, kayakers, and anglers.

If cleaned up, this beautiful waterway could become a world-class destination for water sports enthusiasts and shoreline activities of all kinds, while contributing to a healthier San Francisco Bay.

As the Petaluma River TMDL heads to the EPA for a final review, Baykeeper will continue to push for a smarter approach. We can’t let another 45 years go by before it’s safe to swim in the Petaluma.

Source: https://baykeeper.org/blog/too-little-not-too-late-petaluma-river

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Full of it: Keeping horse manure out of the Petaluma River

San Francisco Baykeeper

One of the largest horse boarding facilities in the country lies on the banks of the Petaluma River (pictured, above). For years, there’s been nothing to stop the horse manure from flowing straight into the river and downstream to San Francisco Bay.

Manure runoff contains unlawfully high levels of bacteria, nitrogen, ammonia, phosphorus, and toxins, all of which are hazardous to public health and wildlife.

“Dangerous levels of bacteria have shown up in every water sample from the Petaluma River taken by agencies since the 1970s,” says Baykeeper Staff Attorney Ben Eichenberg. “We suspected that the fouled runoff from hundreds of horses at Sonoma Horse Park had contributed to the problem.”

Last rainy season, Baykeeper scientists conducted an extensive field investigation in the area. Our water sampling confirmed that runoff from Sonoma Horse Park was indeed contaminated and flowing into the Petaluma River and nearby wetlands.

Despite the fact that the Petaluma has the potential to be an idyllic recreational resource for the community, the river has a long history of neglect from government regulators.

The pollution is particularly troublesome since the Petaluma is critical habitat for many protected species, such as steelhead trout, Chinook salmon, longfin smelt, and green sturgeon, as well as the California brown pelican. Too much phosphorous and nitrogen in the water causes algae to thrive, which drains vital oxygen and suffocates fish.

That’s why Baykeeper filed a lawsuit under the Clean Water Act. We now have a legally binding agreement with the owner of Sonoma Horse Park to stop the facility’s manure and other pollutants from flowing into the river.

Under our agreement, the facility will use a large pond to capture runoff before it enters the river, contain and cover all of its manure piles, and implement other pollution controls as needed to prevent manure from contaminating the environment. In addition, Sonoma Horse Park agreed to direct $40,000 to the Rose Foundation for Communities & the Environment to mitigate damage caused by its past pollution. The Rose Foundation will award these funds to other local nonprofits for specific projects to restore the watershed.

We’ll keep monitoring to make sure the new runoff controls at the horse park are effectively stopping pollution—to give the Petaluma River a fighting chance at being a healthy and safe waterway for local communities and wildlife.

Source: https://baykeeper.org/blog/full-it-keeping-horse-manure-out-petaluma

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$9.7 million in federal funds arrives for long-awaited Petaluma River dredging

Yousef Baig, THE PRESS DEMOCRAT

The Petaluma River, a tidal waterway that has seen boat traffic decline as silt piled up, will be dredged this year for the first time since 2003, rejuvenating a natural resource that for generations was the lifeblood of the community.

The U.S. Army Corps of Engineers will be allocating roughly $9.7 million this year to pay for the project, U.S. Rep. Jared Huffman, D-San Rafael, announced Monday. An additional $1.3 million was set aside for preliminary work to eventually dredge the San Rafael Canal.

The Army Corps is supposed to maintain the 18-mile river every four years but has fallen way behind on that commitment.

“I’m just very happy for the people of Petaluma,” Huffman, a member of the House Transportation and Infrastructure Commitee, said in an interview. “They’ve waited a long time.”

With the money now in place, the dredging work could begin as early as June 1 depending on the migration of protected species like steelhead trout that naturally spawn in the watershed, said Jason Beatty, director of Petaluma Public Works and Utilities.

The city council last month approved nearly $2 million for an emergency dredge of the river turning basin and Petaluma Marina in case the Army Corps again passed on doing the work. With the project now covered, the city will use that money on the marina, where the number of vessels leasing space is now less than 40% of capacity, or about half the Bay Area average, Beatty said.

Members of the local boating community were elated by Monday’s news. Leland Fishman, commodore of the Petaluma Yacht Club, said the project could start a “rebirth of our river.”

Read more at https://www.pressdemocrat.com/news/10693943-181/97-million-in-federal-funds

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Bay plastic infests Petaluma River

Janet Perry, PETALUMA ARGUS-COURIER

There are plastic particulates in San Francisco Bay, trillions of them. Some come from car tires — those tend to sink to the bottom — and there are tiny fragments floating, many coming from fancy polar fleece jackets and other clothing after the first few washings.

There’s other stuff in there too, like single use plastic container particles, pieces of plastic stir sticks and plastic bags, and it has caught the attention of scientists.

The San Francisco Estuary Institute and the 5 Gyres Institute carried out a study of plastic in the bay.

The Petaluma River flows into the bay and was mentioned in the study, although researchers did not collect data from the river itself. Carolynn Boxx, 5 Gyres science programs director, explained that samples were collected where the Petaluma River flows into the bay but because of the limited number of samples collected, individual sections of the bay were not analyzed separately.

“The project identified recommendations to work towards solutions, with supporting policy that eliminates single use plastic items being one of the top recommendations,” Boxx said. “We encourage Bay Area cities to look to Berkeley’s comprehensive ordinance on disposable plastic food ware as a model ordinance. Maybe Petaluma will be next?”

The Petaluma City Council recently passed a ban on Styrofoam and has considered expanding it to plastic food ware.

Clothing is a big plastic culprit too. The first washing of fleece and other plastics-based fibers can have a big impact, as the particulates tend to be dispersed more during those first washings. Lots of clothing today contain man-made plastics fibers.

Some companies, like Patagonia, are trying to find solutions and encourage the purchase of well-made items that will last longer.

Read more at: https://www.petaluma360.com/news/10353280-181/bay-plastic-infests-petaluma-river?sba=AAS

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Waste deep: Petaluma River awash in bacteria

Will Carruthers, THE BOHEMIAN

The river winding through downtown Petaluma might be the city’s single most defining feature. The city’s annual Rivertown Revival Festival features views of the river and, farther south, recreationists use the water for entertainment and exercise every day.

Yet, since 1975, the state has designated the water a contaminated water body due to excessive levels of bacteria tied to fecal matter. The river has also been included on the list for excessive amounts of pesticides, trash and sediment at other times.

Now, a state water oversight board may pass a plan laying out the steps to lower the levels of bacteria in the river and its watershed.

At a Wednesday, Nov. 13 meeting in Oakland, the San Francisco Bay Regional Water Quality Control Board will consider approving an amendment to the board’s water quality control plan for the region, a document known as a basin plan. The proposed amendment will set a cap on the amount of fecal indicator bacteria in the river’s watershed—the TMDL—and identify actions required to reach that goal.

The federal Clean Water Act requires the state to create the cap and cleanup plan, known as a Total Maximum Daily Load [TMDL].

Staff members working for the water board, one of nine similar regional bodies tasked with setting water quality rules in California, have been assembling the Petaluma River plan for several years, according to Farhad Ghodrati, an environmental scientist with the San Francisco Bay board.

Although there are over 100 potentially dangerous bacteria related to fecal matter, scientists generally only test for a few varieties. These “fecal indicator bacteria,” including E. Coli, are a sign that animal waste has contaminated the water body. If those levels are above the bar set by the water quality control board, they add the water body to a list of “impaired” waterways.

Read more at https://www.bohemian.com/northbay/waste-deep/Content?oid=9360941

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