Day

September 19, 2019

Scarce Shark Tough to Tag

Basking sharks were once so abundant along the California coast that a thrill-seeking trophy hunter reportedly harpooned a half-dozen in under three hours in Monterey Bay. That was in 1947. Today, the big fish are so rare that it’s taken a team of scientists between San Diego and Santa Cruz eight years to put tracking tags into just six animals. Their numbers are so low, in fact, that researchers, working with tiny sample sizes, can scarcely study them at all...
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Tire Melt in Salmon Stream?

On the morning of November 8, 2018, Allen Harthorn, a farmer who lives about two miles from the town of Paradise, watched a dark cloud of smoke forming in the east and began to worry about the safety of his and his neighbors’ homes. He also began to worry about some other residents of the Butte Creek watershed—the largest run of naturally spawned spring Chinook in California. The fire missed Harthorn’s home, but grew into the deadliest wildfire in California...
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Drones Pilot Vegetation Mapping

By Michael Hunter Adamson In the world of conservation, as attested to by multiple speakers at a late summer UC Davis event, drones, or UAVs (unmanned aerial vehicles) may be the vehicle of choice for mapping the future of invasive plant management in the Delta. The California Department of Water Resources began using UAVs in earnest after the Oroville dam failure in the winter of 2017, when drones offered visuals no one could get near on the ground. The Blacklock...
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State Plan Doubles Down on Alignment

By Cariad Hayes Thronson The California Water Plan Update 2018—released by the Department of Water Resources in July—is meant to guide state policy and investment over the next 50 years to maximize the benefits squeezed out of every drop of the water supply. The timing of Update 2018 is fortuitous. In April, Governor Newsom ordered the California Natural Resources Agency, California Environmental Protection Agency, and California Department of Food and Agriculture to develop a portfolio of water resilience strategies. “There’s...
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Clout and Cool Science Push Land-River Connection

By Robin Meadows Statewide, 13,000 miles of levees disconnect our rivers from their floodplains, which once served as nurseries for young salmon migrating to the ocean. California Natural Resources Secretary Wade Crowfoot wants to help restore this connection. “It’s one of the most exciting parts of my job,” he said in an interview, his face lighting up in a wide smile. “It’s a win-win-win―it’s a way we can reconnect water with land, create habitat, and provide flood protection.” Before all...
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Paddlers Monitor Plovers

By Ashleigh Papp “It sounds fun and glamorous to kayak to work, but it’s not always the case,” says Ben Pearl, plover program director for the San Francisco Bay Bird Observatory. Pearl spends six months of the year in the field researching predator threats, habitat status, and breeding behavior of the local snowy plover population. “All of this habitat used to be tidal marsh and was converted to salt ponds, so the ground is sometimes soft and nearly impossible to...
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Just Shy of Splendor in the Grass

By Jacoba Charles Tobias Rohmer and Ben Chen’s careful work in Hayward’s Cogswell Marsh represents one small moment in the massive, nearly 20-year-old Invasive Spartina Project. To date an initial total of 805 acres of non-native cordgrass, spread across 70,000 acres of the San Francisco Bay’s marshlands, has been reduced to less than 40 net acres. Treatment of the southern section of Cogswell marsh was halted in 2011, however, due to concerns about Ridgway’s rails who’d made homes in the...
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New Regional Rainmaker

By Joe Eaton Environmental issues were important to Michael Montgomery as a young man. Montgomery’s career path led to 33 years with the United States Environmental Protection Agency, where he gained a wealth of experience in navigating complex regulatory landscapes to protect water resources, and ultimately to the San Francisco Bay Regional Water Quality Control Board, where he is now executive officer. “The Bay Area has a strong tradition of coming up with collaborative solutions,” he says. That’s how he...
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Bay Not BPA-Free

By Ariel Rubissow Okamoto “BPA is globally detected in human urine,” says scientist Ila Shimabuku of the San Francisco Estuary Institute. BPA, one of a chemical group called bisphenols, is a clear, stable, durable ingredient in plastic bottles, can liners, cash register receipts and many other things we use and touch every day. In 2017, the RMP collected and analyzed 16 bisphenols (including bisphenol A, or BPA) in 22 water samples from around San Francisco Bay. Concentrations of BPA found...
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True to the Trail

On a clear San Francisco morning, I met Barb Christianson and Sally Jo Dinwoodie, both 64, at a Hunter’s Point neighborhood with new, multi-storied townhouses that can go for a million dollars. Seven of us headed down the hill towards the Bay with the San Francisco skyline and Bay Bridge sparkling. Christianson, Dinwoodie, and a small group of friends are walking the entire San Francisco Bay Trail by tackling one segment at a time, in order, once a month. After...
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About Us

The San Francisco Bay-Delta is named in the federal Clean Water Act as one of 28 “estuaries of national significance." For over 20 years, the San Francisco Estuary Partnership has worked together with local communities and federal and state agencies to improve the health of California’s most urbanized estuary.

San Francisco Estuary Partnership 1515 Clay Street, Suite 1400 Oakland, CA 94612 (510) 622-2304

Association of Bay Area Governments