California’s Wild and Scenic Rivers System expanded for the first time in 13 years in June when Governor Edmund G. Brown Jr. signed legislation protecting 37 miles of the upper Mokelumne River.

Rivers-Floodplains



13
Aug

California’s Wild and Scenic Rivers System expanded for the first time in 13 years in June when Governor Edmund G. Brown Jr. signed legislation protecting 37 miles of the upper Mokelumne River.

It was the culmination of a long struggle for the Jackson-based Foothill Conservancy and other river advocates. Four years ago, a Mokelumne bill was approved by the state Senate but killed by a parliamentary maneuver  that blocked a vote in the Assembly. Despite significant support in Calaveras and Amador counties, the bill was opposed by local water agencies concerned about the potential impact on their water rights. In 2015 Assemblyman Frank Bigelow (R-O’Neals) successfully proposed a state study of the Mokelumne’s suitability for wild and scenic designation. The resulting California Natural Resources Agency report, released in April, recommended protected status with special provisions ensuring water agencies’ existing rights and ability to apply for new rights. “All of the affected water...
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15
Jun

Corps Explores New Ecological Territory

A levee replacement project near the small town of Hamilton City is breaking ground as the first project that the US Army Corps of Engineers has approved based in part on potential benefits to an ecosystem. “We’ve been told this will be a national model once it’s completed,” says Lee Ann Grigsby of Hamilton City. The levee, whose original construction failed to meet modern standards, had needed to be fixed for a long time: recent estimates gave it only a 66% of withstanding a 10-year flood scenario. In 2002, new Army Corps guidelines permitted ecosystem benefits to be taken into the accounting of costs and benefits. Today, one section of the levee has been completed and restoration of the newly...
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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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Locals Trade Vines for Resilient Rivers

In 2002, when stretches of the Napa River running through Rutherford area vineyards breached levees and flooded yet again, Michael Honig did something remarkable: rather than call the authorities to complain, his neighbors and he banded together to restore their riverbanks. “It had became a kind of competition,” Honig says.
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15
Aug

The Second Signal: Guadalupe River Flood Monitoring

It was past midnight when Lester McKee pulled the plug. He’d been watching the weather for days on screen, looking for the perfect storm of conditions he needed to send his team out to sample the Guadalupe River in Santa Clara County. He knew there’d been enough rain already to saturate the soil and surpass annual averages. Zooming in on real-time sensors aimed at Santa Clara Valley Water District reservoirs, he could see they were full enough to spill downstream. On NOAA’s weather site, he found that ten inches of rain were projected to fall on the ridgeline of the Santa Cruz Mountains, and the state’s water resources department was estimating peak flows of 9,000 cubic feet per second in...
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09
Aug

Advocates for Alameda Creek are concerned that a new proposal to beef up passenger rail service between Stockton and San Jose would jeopardize water quality and wildlife habitat.

Niles-based Alameda Creek Alliance says the proposed expansion of the Altamont Corridor Express (ACE) passenger rail service might also bring increased freight train traffic to narrow, steep Niles Canyon, creating a situation that could lead to possible derailments and creek-contaminating spills. (A passenger train derailed into the creek in 2016.) Niles Canyon is the critical mid-point of complex watershed-wide work to reduce erosion, improve flood control, and restore steelhead to the creek. The Alliance and others are asking for a more thorough environmental impact assessment and more clarification about what kinds of uses of the railway will be permitted in the future. DM
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20
Jun

Flood Plan Boosts Floodplain

The 2017 update to the Central Valley Flood Protection Plan, to be released later this summer, radically revises the flood control strategies that have prevailed for more than a century. The plan recognizes the connections between the flood system, the water system and the ecosystem, and relies less on levees and more on floodplain restoration to upgrade the state’s aging and inadequate flood control infrastructure.
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27
Sep

Alameda Work Trickles On

Along Alameda Creek, which drains a 640-square-mile watershed, humans have built dams, buried creeks, and reshaped channels. “The watershed is huge and complex, and all these changes, compounded over time, have left us with a long and arduous path to getting it to function more naturally again,” says Carol Mahoney, a planner for Zone 7 Water Agency.
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18
Sep

Wild River Lands in Suspense File

Remember that chart showing how a bill becomes a law in your high school civics textbook—all those boxes and arrows? Odds are it didn’t include the Suspense File of the Assembly Appropriations Committee, a legislative limbo where bills can expire without ever coming to
a vote. That was the fate of Senate Bill 1199, a measure introduced by State Senator Loni Hancock (DBerkeley) in April to add portions of the Mokelumne River to the California Wild and Scenic Rivers System. Supported by Friends of the River, the Foothill Conservancy, and the Calaveras County Board of Supervisors, SB 1199 cleared the Senate in May. In the Assembly, Appropriations Chair Mike Gatto referred the bill
to the Suspense File because of its alleged fiscal...
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