All In for One Water

Infrastructure



15
Dec

All In for One Water

As climate change threatens to upend precipitation patterns and disrupt water supplies, agencies are increasingly searching for ways to wring more benefits out of every drop. Valley Water (Santa Clara) is seeking to take integrated water management planning to the next level through its One Water initiative. “The idea is to manage all water — treated water, groundwater, stormwater, flood water, water for habitat, species and Baylands — as one resource,” says the District’s Brian Mendenhall.
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13
Dec

Worries Over Puny Pumps

Pump capacity, reliability, and cost are already big concerns for flood-control and sea level rise managers. “Gallon for gallon, it’s easily the most expensive way to deal with water,” says Roger Leventhal, a senior engineer with the Marin County Department of Public Works. “It’s not the ideal solution, but it’s the one we’re falling into.” New pumps, while costly in both dollars and electricity, are currently in the works. “It seems unlikely for us as a region to get away with increasing the number of pumps 100-fold, which is what we would have to do,” says Lindy Lowe, former Bay Conservation and Development Commision planning director.
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13
Dec

Cold Curtain

Cold water, essential for the life cycle of Chinook salmon, is all too often in short supply along the Sacramento River. Two clever innovations have been implemented to conserve cold water into the autumn. First: A 300 foot tall, 250 foot wide “adjustable straw” possessing a series of intake gates enables power plant operators to draw water from behind the dam at three different depths. Second: A 40 foot tall rubber sheet.
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13
Nov

A wedge of gravel, mud, and grasses irrigated by treated wastewater outperforms all expectations as a prototype for climate change adaptation.

Experts monitoring 16 months of plant growth on a humpbacked levee experiment on the San Leandro shore, a project led by the Oro Loma Sanitary District, found early weed colonization followed by rapid dominance of target native perennial vegetation. “Native vegetation outcompeted weeds,” says Peter Baye, who designed the planting palette for this multi-benefit infrastructure project. The results were apparent during an October 2017 tour for international design teams looking at homegrown innovations in sea level rise adaptation as part of the Resilient By Design Bay Area Challenge (see photo). With so much of the Bay shoreline in need of protection from increased flooding, as well as habitat for wetland species at risk and new wastewater infrastructure, progress on this experimental levee is being...
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Bridges - public shore
26
Sep

Drought Contingency

Motivated by the recent drought, local water agencies have formed an unprecedented partnership aimed at reducing the impact of future dry spells. The Bay Area Regional Reliability partnership consists of eight of the region’s larger water districts. “For the first time in the history of water deliver in the Bay Area, the water utilities are talking about how to assist each other when there is a shortage.”
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22
Sep

High Road for the Wettest Highway?

As Bay Area cities and counties grapple with the formidable challenge of preparing for a higher San Francisco Bay, there is perhaps no better example of the obstacles and opportunities than the effort underway to adapt Highway 37. The 21-mile North Bay corridor running from Vallejo to Novato has long been a source of tranquility and frustration. The highway offers sweeping views of tidal baylands dotted with roosting waterfowl and shorebirds plumbing mudflats for food, along with mile-upon-mile of open space. And commuters often have ample time to enjoy the scenery: Highway 37 is one of the most congested in the region. Congestion isn’t the only problem facing the highway. This past winter a combination of storms and high tides...
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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

LA Drainage Goes Native

Community Conservation Solutions is piloting a new analytical tool that not only taps an untapped local water supply — the 969 miles of metropolitan storm drains in Los Angeles — but also has the metrics to earn carbon credits for doing so. “It’s very practical, you just stick your straw in the local water source rather than pumping it into the city from hundreds of miles away,” says the NGO’s director Esther Feldman. The tool helps land and water managers prioritize projects on public lands near stormdrains that use this local water to irrigate and vegetate the urban ecosystem, and to recharge groundwater.
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04
May

Corte Madera’s Flood Fight Goes On and On

If you peek through the chain link fence behind the Ross Post Office in Marin County, you will see a suburban creek that looks much like any other. Some sections of bank are armored with riprap and wire, others with concrete, and others not at all. Scattered alders grow at the edge of water that riffles over stone and around muddy bends. If you peek through the chain link fence behind the Ross Post Office in Marin County, you will see a suburban creek that looks much like any other. Some sections of bank are armored with riprap and wire, others with concrete, and others not at all. Scattered alders grow at the edge of water that riffles over stone...
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20
Jun

EBMUD Experiments With Pipe Replacement

On average, underground water distribution pipes can last about 100 years. EBMUD owns and maintains roughly 4,200 miles of them. And it replaces about ten miles per year. At that rate it would take four centuries to replace the whole system: an approach one could charitably call unsustainable even if all the pipes were brand-new today.
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16
Dec

Two-Way Threat to Intakes and Outfalls

San Francisco’s vulnerability to sea level rise is no secret. Entire neighborhoods are built on fill, only feet above current sea level. But just like Treasure Island and the rapidly developing Mission Bay neighborhood, less visible parts of the city — the pipes and plants that collect, treat, and whisk away San Francisco’s stormwater and sewage — are also at risk. And this critical infrastructure could face a double hit from climate change in the coming decades: more severe storms dumping excess rainwater into the system on one end, and rising sea levels and storm surges inundating pipes and facilities on the other. “If wastewater starts flowing into the streets or into people’s homes, people are going to get upset...
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16
Dec

Beyond the Bag Ban

The other day I found myself turning out the closets for one last plastic bag. But a year into San Francisco’s bag ban, there just aren’t that many plastic shopping bags around our house anymore. All told, 60 percent of municipalities in the four most urbanized Bay Area counties have banned them. It’s all part of a substantial endeavor by regional regulators and 76 local municipalities to stop litter, PCBs and mercury from getting into our creeks and Bay via stormwater runoff.
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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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