A Steelhead Renaissance in San Mateo Creek

Creeks



Creek snorkel survey. Photo: Rick Johnson
21
Mar

A Steelhead Renaissance in San Mateo Creek

Rich Johnson steps through an inconspicuous gate between two backyards not far from the downtown San Mateo Caltrain station and points down a steep, overgrown streambank to a piece of PVC piping, barely visible beneath the tumbling water. “That’s our furthest downstream PIT array,” says Johnson, an aquatic biologist with the San Francisco Public Utilities Commission (SFPUC). The Passive Integrated Transponder array is one of four stations along San Mateo Creek that capture signals from tagged steelhead as they migrate up and down the creek.  More than a month after a series of atmospheric rivers deluged the Bay Area in January, San Mateo Creek is still running high, fed by unusually large releases from Crystal Springs Reservoir. The high flows...
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Los Rios Check Dam open for fish passage. Photo: Max Stevenson
21
Mar

Reconnecting Putah Creek with the Ocean

After decades of restoration, recent Chinook salmon runs in Putah Creek have reached 1,800, producing young that swim toward the ocean by the tens of thousands. But, says Putah Creek streamkeeper Max Stevenson, this growing population still faces considerable obstacles.  Putah Creek flows from headwaters in the North Coast Ranges to the Toe Drain of the Yolo Bypass, and was dammed near Winters in the 1950s to divert water for Solano County. Salmon began coming to the creek after settlement of a lawsuit in the year 2000 that stipulated releasing water for fish as well as optimizing spawning grounds.  Salmon need loose gravel to dig spawning pits, or redds, that are up to six feet across. “They flop over and...
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21
Mar

Saving a Species Struck by Systemic Oversights at Clear Lake

Since the 1950s, four native fish extinctions have taken place in Lake County’s Clear Lake: the thicktail chub, Clear Lake splittail, Pacific lamprey, and hardhead. A fifth endemic species, the Clear Lake hitch, is teetering on the brink. “Agencies view the hitch as just a fish. But for Tribes the hitch is sacred,” explains Big Valley Band of Pomo Indians tribal elder Ron Montez, Sr. “We believe Creator placed this fish here to help us survive for thousands of years. The chi (Pomo word for hitch) not only fed the seven Tribes around the lake, but it fed Tribes who came in from surrounding counties—Sonoma, Napa, Sacramento—and sustained all these people since time immemorial. That’s gone now. Anyone younger than...
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25
Oct

Reconnecting Mill Creek to its Watershed

For thousands of years, Coho salmon and steelhead returned to spawn in the cold waters of Mill Creek, part of the San Vicente watershed in the mountains above Santa Cruz. This ended when a mining and logging company dammed the creek in the early 20th century. Now, an ambitious conservation initiative has succeeded in removing the dam, bringing people together across local land trusts, Native American groups, regional agencies, and researchers from multiple universities. Valentin Lopez, chairman of the Amah Mutsun Tribal Band, spoke about the dam removal in his session of the Estuary Summit. Mill Creek Dam removal. Photo: Ian Bornarth, courtesy Sempervirens Fund. The San Vicente Redwoods is a large stretch of forest sitting above the coastal town...
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25
Oct

Habitat Tramplers Run Amuck – Cows Versus Creeks

The water of a small stream in western Sonoma County flows slowly under a highway bridge, coursing its way through private ranchland to the ocean about seven miles away. Ducks paddle among floating vegetation, and an egret tiptoes slowly through the shallows. At the edge of the waterway, called Americano Creek, a cluster of cattle huddles under the willows. They frequent this spot and have trampled the banks to mud. Hoofprints can be seen leading into the water, and cakes of manure fester beside the stream, which meets the Pacific Ocean a few miles south of Bodega Bay. “With the federal Clean Water Act, the state Clean Water Act, and all the other regulations, you would think this would be...
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17
Jun

Thinking Like Beaver to Aid Yellow Creek

Last fall, the Maidu Summit Consortium, a nonprofit composed of nine Mountain Maidu tribal member groups, installed 73 BDAs—beaver dam analogs—in Yellow Creek, a tributary to the North Fork Feather River and a state-listed heritage trout stream. Swift Water Design and U.S. Fish and Wildlife Service designed the structures, and Mountain Maidu tribal youth worked with Swift Water to build them. The idea behind the structures, which mimic beaver dams, is to slow erosion, catch sediment, and build up the river bottom to reverse the incised channel—without importing soil and other materials or emitting carbon from heavy, diesel-powered equipment. “Before this project, PG&E had done some pond and plug projects to restore the meadow,” says Trina Cunningham, executive director of...
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23
Mar

York Creek Uncorked

York Creek free flowing at last. Video: Daniel McGlynn. Over the summer, while most of the Bay Area was figuring out how to navigate the COVID-induced shelter-in-place orders, 1,933 heavy truckloads laden with 22,000 yards of material wound their way away from Napa County’s York Creek, and were dumped into two nearby landfills. Extracting these spoils was the last step in the York Creek Dam removal project, the culmination of decades of effort by the city of St. Helena to take down a small earthen dam with a big ecological impact. The dam blocked fish from spawning in the creek’s 4.4-square-mile-watershed. Though the project seemed straightforward, no one involved in its conception could have imagined the convoluted path to its...
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23
Mar

Fixing a Dysfunctional Marsh on Sonoma Creek

Restoration projects, like species, evolve. The Sonoma Creek Enhancement Project, originally about mosquito control, has shown itself to be a boon to special-status tidal marsh wildlife as well. More than a decade of adaptive management actions made that happen.  The existing marsh, formed rapidly beginning in the 1960s by deposited sediment, lacked the dendritic channels of a mature marsh. High tides brought in water that pooled in a central basin and didn’t drain out, providing breeding habitat for mosquitos. The disadvantages of chemical treatment prompted land managers to look for alternatives.  So in the 2000s, the Marin-Sonoma Mosquito and Vector Control District teamed up with the US Fish & Wildlife Service (the land manager), Audubon California, and environmental scientists Daniel...
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18
Jun

Forty Miles of Creek, Six Adaptation Projects

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...
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16
Apr

A new project should dramatically improve conditions for endangered steelhead trout in the lower reaches of Alameda Creek.

The project is part of a long-term effort to restore steelhead to Alameda Creek. Last year, for the first time in decades, the San Francisco Public Utilities Commission began releasing water from a newly retrofitted dam, effectively reviving an important tributary stream. Also in 2019, the Alameda County Flood Control District began construction of a key fish ladder at the BART line crossing that will allow adult steelhead to access the river’s headwaters. The new fish passage enhancement plan focuses on a section of the stream that flows through a highly urbanized area. Largely contained within channels of concrete and riprap, the water courses under a freeway overpass and several boulevard bridges. The water is warm, swift and shallow—an unfriendly...
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19
Mar

Taking a Break from the Corps

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.
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19
Mar

Dam Tweaks Yield Results

By Alastair Bland “After one year of flows, we’re seeing lots of rainbow trout,” says Brian Sak of the San Francisco Public Utilities Commission (SFPUC). For the first time ever, cold water is flowing steadily through Calaveras Dam in southern Alameda County, and into the creek canyon below. The return of rainbow trout to Calaveras Creek marks a milestone in an ongoing, multi-agency restoration of Alameda Creek, which drains more than 600 square miles of the East Bay. Since the dam’s construction in 1925 by the Spring Valley Water Company, no measurable flows have been allowed through the barrier. But facing legal action, the SFPUC agreed to overhaul its operations in the interests of steelhead recovery as part of its...
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19
Mar

Opening the Mouth of Walnut Creek

Paul Detjens is driving us from his Martinez office to a restoration site near the mouth of Walnut Creek on Suisun Bay, a project he spearheads as an engineer for the Contra Costa County Flood Control District. These lower reaches of the creek — straightened, widened, and leveed by the U.S. Army Corps of Engineers — have been a sluggish, silt-filled problem for more than half a century. Detjens has worked to find a solution for the last 17 years. Now that the district has taken the unusual approach of parting ways with the Corps in favor of local control, a fix is finally in sight. Goals include protecting people from floods, restoring habitat, reconnecting the creek with its historical...
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20
Mar

Putah Creek Pipeline for Salmon

“The dream is to reestablish a natural run of salmon in Putah Creek,” says UC Davis professor emeritus Peter Moyle. In 1972 Putah creek was a trickle of water between heavy machinery mining gravel for the campus roads. Moyle and others urged the university to cease mining and by the end of the decade the administration had designated a riparian reserve along the creek on campus. Since then there’s been an incredible increase in salmon....
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15
Jun

Alameda Creek: Harnessing a Watershed for Public Sediment

In Resilient by Design team Public Sediment’s effort to unlock Alameda Creek, the key lies in sediment--raw material needed to build levees and raise marshes so shorelines can withstand sea level rise. “We’re designing a suite of special structures, a mix of living and constructed features, to move more sediment and create a dynamic new equilibrium for the creek,” says team leader Gena Wirth. To get a conversation about sediment going, Wirth’s teammate Claire Napawan will often start by talking about trout. “Lots of the seniors around here remember fishing in the creek,” says Napawan. “We’re looking for ways to make the watershed culturally relevant to the residents.” When RbD first began working various bayshore sites, Alameda County flood control...
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15
Jun

Islais Creek: Hyper-Creek Mediates Hazard Sandwich

Situated between trendy Dogpatch and struggling Bayview-Hunter’s Point, the Islais basin is, according to Bry Sarté of Sherwood Design Engineers, “the biggest watershed in San Francisco and home to the city’s most disadvantaged community.” These days, Islais creek is mostly invisible, culverted and paved over between Glen Canyon upstream and its outfall near Third Street. Tasked with restructuring and reimagining the basin as a part of the Resilient by Design Challenge, Sarté and team BIG + ONE + Sherwood began by “meeting with everyone who would take the time to talk with us.” The team settled on a blend of hard and soft approaches to resilience: On the hard side, raising the seaward edge of the Port lands; on the...
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15
Jun

South San Francisco: Colma Creek Collect and Connect

On the south face of San Bruno Mountain, giant white letters read “South San Francisco: The Industrial City.” According to Richard Mullane, urban designer and Resilient by Design team member of HASSELL+, “that sign has given this city a massive identity problem.” As a part of the challenge to redesign a Bay Area more resilient to sea level rise, HASSELL+ has focused on the urban core of South San Francisco, currently a noisy mess of boulevards, freeways, and warehouses that have all but suffocated Colma creek. “If we simplified our project down to one thing, it would be that they need more parks, especially along the creek,” says Mullane. They also hope to line the creek with native vegetation and...
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02
May

Eighteen years after local stakeholders adopted the Putah Creek Accord to guarantee minimum flows and other enhancements, birdlife is flourishing in the Creek’s Riparian Reserve, highlighting the restoration of what was once a dried-up ditch.

Former U.C. Davis post-doc Kristen Dybala and her colleagues recently reported in Ecological Restoration on a project that monitored populations of breeding species, mostly songbirds, at the Reserve and 13 other sites along lower Putah Creek from 1999 through 2012. Some sites had seen active restoration efforts to benefit native fish; others had not. Overall, birds seemed to respond to the modified flow regime, with positive trends for 27 species and greater community diversity. Seven riparian-dependent species showed increases in population density, among them the yellow warbler, a California species of special concern as a result of habitat loss and nest parasitism by brown-headed cowbirds. Both riparian-dependent and woodland-associated birds had faster density growth rates than species associated with human-modified...
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13
Dec

Coyote’s Cache of Intermittent Riches

There’s a common perception in California that more water is always better for fish. Yet many native species possess traits that allow them to persist through harsh, dry summers and cyclical drought. Over the long run, summer releases from reservoirs and urban runoff can harm local fish by laying out a welcome mat for non-native species adapted to perennial flows, Leidy says. “In areas where streams have been altered by humans, where the natural hydrograph has changed, that’s where you see invasives take a foothold.” Coyote Creek’s strictly seasonal flows, and those of other naturally intermittent streams in the state, by contrast, are so extreme in the winter and so sparse in the summer that non-natives simply can’t cope. “It’s...
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26
Sep

Choice Mountain Parcels Help Protect Bay

John Muir Land Trust announces one of its largest-ever purchases, the 604-acre Carr Ranch located squarely within San Leandro Creek’s 50 square-mile watershed. Similar conservation targets exist across the Bay Area, particularly on the outskirts: Sprawling, undeveloped, privately owned parcels whose protection sends a variety of benefits cascading downhill towards the bay.
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