Tag: water supply

Author SuzannePosted on Categories Agriculture/Food System, Sustainable Living, WaterTags , , , ,

North Bay braces for water cuts with reservoirs at record lows after second dry winter

Mary Callahan, THE PRESS DEMOCRAT

Anyone paying attention to the season’s paltry rainfall has seen it coming for some time, but recent pronouncements about the state of the region’s water supply make it plain: hard times lie ahead.

Lake Sonoma and Lake Mendocino are both at their lowest levels ever for this time of year — after two consecutive years in which the combined rainfall totals barely measure up to a single average year.

State water regulators have issued letters notifying more than 700 vineyards, domestic suppliers, farmers and other entities with water rights for the Russian River that their diversions may be curtailed.

Dairy farmers in southern Sonoma County already are trucking thousands of gallons a day to their parched lands, and more than a billion gallons of recycled wastewater normally delivered each year to other agricultural users is simply unavailable, owing to low rainfall and diminished production.

And though it’s only the beginning of April, with months still to go before summer even starts, officials say the overall picture suggests mandated conservation measures aren’t so much a matter of if, but when.

Read more at https://www.pressdemocrat.com/article/news/north-bay-braces-for-water-cuts-with-reservoirs-at-record-lows-after-second/

Author SuzannePosted on Categories WaterTags , , ,

High-tech forecasting model scores scientific win at Lake Mendocino, showing promise for western reservoirs

Guy Kovner, THE PRESS DEMOCRAT

Sandbars are spreading across rain-starved Lake Mendocino, the reservoir near Ukiah that is 35 feet lower than it was a year ago, a grim wintertime sight for the second major source of water for more than 655,000 people in Sonoma, Mendocino and Marin counties.

But the situation would be considerably worse without the payoff from a six-year, $50 million project applying high-tech weather forecasting to management of the reservoir behind Coyote Valley Dam built on the East Fork of the Russian River in 1958.

Thanks to the project, which replaces an inflexible dam operations manual with meteorological science unknown six decades ago, there is 20% more water — nearly 12,000 acre feet — now in Lake Mendocino as the North Bay teeters on the brink of drought.

“Imagine what would have been without this,” said Grant Davis, head of Sonoma Water, the agency that supplies water to 600,000 Sonoma and Marin county residents and another 55,000 people from Mendocino County’s Redwood Valley to Healdsburg.

A 141-page report released Thursday by Sonoma Water and seven partners provides “proof of concept” for Lake Mendocino’s Forecast Informed Reservoir Operations program, known as FIRO, Davis said.

The program’s success comes as climate change is “exacerbating the feast-or-famine nature of precipitation,” according to Sonoma Water, complicating work in its field and imperiling the supplies that go to tens of millions of residents and agricultural users across the water-scarce western United States.
Continue reading “High-tech forecasting model scores scientific win at Lake Mendocino, showing promise for western reservoirs”

Author SuzannePosted on Categories Agriculture/Food System, Land Use, WaterTags , , , , , , , , ,

Sonoma County supervisors eye changes to rules governing vineyard development

Tyler Silvy, NORTH BAY BUSINESS JOURNAL

Changes sought by grape growers to Sonoma County’s ordinance governing vineyard development are set to come before the Board of Supervisors on Tuesday, with proposed revisions that county leaders say will streamline permitting and encourage more environmentally friendly farming practices.

The changes are meant to update the county’s Vineyard Erosion and Sediment Control Ordinance, established in 2000. The rules have long been a source of friction between the county’s dominant industry and environmental interests.

But the changes before the Board of Supervisors on Tuesday, supporters say, are a common-sense approach to adapting land use that will be better for the environment.

“In my mind, not only does this not weaken (the ordinance), but this increases it,” said Supervsior James Gore. “I want to see landowners and producers changing practices to less-intensive systems. And if we can streamline this process, and reduce the costs of permitting to do that, that is the ultimate win-win.”

The revisions call for greater leeway and eased rules for growers who are seeking to replant vineyards, including incentives for those who use less invasive methods. The changes also would adjust permitting costs and timelines.

The changes came about through a series of meetings over the past two years between grape growers and Supervisors Gore and Lynda Hopkins, who together represent the Russian River Valley, Dry Creek Valley, Westside Road and the Alexander Valley.

The original ordinance stemmed from a public push to prevent damaging erosion, tree removal and water pollution problems linked to vineyard operations, which now cover more than 60,000 acres in Sonoma County. In one case, a major landslide in 1998 caused Dry Creek to run red with sediment-laden runoff. The rules have been revised at least three times since the initial ordinance.

The latest proposal emerged from discontent within the wine industry about the work of an an outside contractor the county uses to oversee the vineyard erosion rules.
Continue reading “Sonoma County supervisors eye changes to rules governing vineyard development”

Author SuzannePosted on Categories Agriculture/Food System, WaterTags , , , ,

Delta on the edge

Kurtis Alexander & Santiago Mejia, THE SAN FRANCISCO CHRONICLE

In a California landscape defined — and divided — by water, a single issue unites the people who live here: digging in against the tunnel

In spring and summer, when the skies are warm and the shadows thin, California’s snowy Sierra Nevada and southern Cascades unleash billions of gallons of fresh water each day, a melted bounty that nourishes the state’s mightiest rivers before converging slowly on the Sacramento-San Joaquin River Delta.

Here, across a sun-baked plain of rickety towns and sprawling countryside, the cool water winds through streams and sloughs. It fills irrigation ditches that feed cornfields and vineyards. It flows through shallow bays flanked by wooden fishing piers and riverside homes. Finally, it’s pumped off to the sinks and showers of two-thirds of Californians, many giving little thought to where the water came from — and just how vulnerable the supply has become.

The delta is an unlikely frontier, and an even more improbable battleground. So close to the Bay Area, but apart. Hidden beyond freeways and tucked beneath the wide open of the Central Valley. Vital to the future, yet wrapped in the past.

This sleepy place, though, is waking, reluctantly and resoundingly, jolted by the state’s modern-day demand for water. Those who live here, where family farms span generations and a postman still delivers mail by boat, fear that looming changes could wipe out this singular slice of California and turn their figurative backwater into a literal one.

The stakes could hardly be higher. Gov. Gavin Newsom, like governors before him, wants to overhaul how water moves through the delta. He’s proposing a 30-mile tunnel that would streamline the delivery of water from the Sacramento River, a bid to halt the ongoing devastation of the delta’s wetlands and wildlife while ensuring its flows continue to provide for the rest of the state.

The pressures of climate change on water supplies have only increased the urgency to act. And the coronavirus pandemic and months of shelter-in-place orders haven’t slowed the planning. A tense situation is unfolding even as California’s attention is elsewhere.

Follow the roads through the delta and you’ll see the signs and stickers, on pickup trucks and bars, at cattle ranches and trailer parks, and next to bridges and boatyards: “No tunnel. Save our delta.”

The starkness of the choice laid out in the slogan is deliberate. Residents here not only see the project as a water grab, but worry the central force in their lives and livelihoods — the movement of fresh water — could be lost as the tunnel allows Silicon Valley, Southern California and the San Joaquin Valley’s vast agricultural industry to satisfy their thirst. President Trump’s insistence on shipping more water to big farms to the south has only added to the anxiety.

“The tunnel just isn’t good for the delta,” said Mark Morais, 70, owner of Giusti’s, a popular roadhouse serving pasta and steaks on checkerboard tablecloths in Walnut Grove, about 30 miles south of Sacramento. “If you divert the water, you’re going to have less for us.”

The communities in the region, which spreads across about 1,100 square miles in parts of five counties, rarely speak with one voice. Local farmers see these watery reaches as meant for agriculture. Those casting for bass and stripers prioritize fish. Boaters want open water. Longtime residents and recent retirees want to sip a cold drink along the waterside and gaze out at their share of California paradise.

Read more at: https://www.sfchronicle.com/projects/delta-on-the-edge/part-one/

Author SuzannePosted on Categories Agriculture/Food System, WaterTags , , , , ,

Sonoma County drills wells to study groundwater sustainability

Guy Kovner, THE PRESS DEMOCRAT

The shallow wells Sonoma County’s water agency is drilling near 11 waterways have nothing to do with delivering water to 600,000 residents of Sonoma and Marin counties.

Instead, the 21 wells will serve as measuring sticks to determine whether pumping groundwater in the county’s three basins — the Santa Rosa Plain, Petaluma Valley and Sonoma Valley — is curbing the flow in creeks inhabited by federally protected fish and other species.

The $300,000 project is the latest consequence of a state law, enacted during California’s five-year drought, requiring long-term sustainability of underground water supplies that were heavily tapped during the prolonged dry spell.

And that means assessing the connection between surface water and groundwater and possibly, for the first time in state history, setting limits on use of well water by residents, ranchers, businesses and public water systems.

“We can’t see what’s beneath the surface, so these monitoring wells will act like underground telescopes. They can help us see how much and when water is available,” county Supervisor Susan Gorin said in a statement.

Gorin is chairwoman of the Sonoma Valley Groundwater Sustainability Agency, which covers the basin seen as most susceptible to depletion. Local agencies were formed in 2017 in each of the county’s basins to implement mandates of the Sustainable Groundwater Management Act that became law in 2015 amid the state’s historic drought.

Farming interests generally have taken a dim view of the increased monitoring and prospect of pumping limits. During the recent drought, when stream flows were greatly diminished statewide, Central Valley farmers especially drew heavily on groundwater at rates that officials said were unsustainable, risking a whole host of related environmental impacts — on drinking water, soil and wildlife.

Read more at https://www.pressdemocrat.com/news/10275251-181/sonoma-county-drills-wells-to

Author SuzannePosted on Categories Water, WildlifeTags , , , , , , ,

Sonoma County considering taking over Eel River water-power project

Guy Kovner, THE PRESS DEMOCRAT

Sonoma County supervisors agreed Tuesday to study the possibility of applying for a license to operate a remote Mendocino County hydropower project, marking the first move to maintain a long-standing water transfer deemed critical to residents and ranchers in both counties.

A coalition of five Mendocino County agencies and California Trout, a 50-year-old environmental nonprofit, are collaborating with Sonoma County’s water agency in the consideration of taking over the federal license for the Potter Valley Project, which delivers 20 billion gallons of water a year from the Eel River into the Russian River basin.

Each of the three partners is putting $100,000 into the study, an amount dwarfed by the potential cost of establishing free passage for the Eel River’s protected salmon and steelhead — likely a requisite step to extend the project’s life.

PG&E, the state’s largest utility now in bankruptcy, surrendered the project in January, upending the license renewal process, and no entity has responded to a Federal Energy Regulatory Commission (FERC) call for a new operator.

The utility, which had owned the project since 1930, said it was no longer economical to operate a plant that generated less than 1 percent of its power.

But the water flowing through the powerhouse is virtually invaluable to the towns and ranches along the upper Russian River from Potter Valley to Healdsburg and is a critical source for Sonoma Water, which delivers water to 600,000 Sonoma and Marin county customers.

Read more at https://www.pressdemocrat.com/news/9598819-181/sonoma-county-supervisors-eye-future

Author SuzannePosted on Categories WaterTags , , , , , ,

Advance in storm forecasting allows Lake Mendocino to hold more winter runoff

Guy Kovner, THE PRESS DEMOCRAT

Dam operators are planning to store nearly 4 billion extra gallons of water this winter in Lake Mendocino, the reservoir near Ukiah that plays a critical role in providing water for residents, ranchers and fish along the upper Russian River and to communities in Sonoma and Marin counties.

Retaining that much more water — enough for about 97,000 people for a year — comes about as a four-year and $10 million program, proven in computer models but not in practice, gets its first field test.

The program, blending high-tech weather forecasting with novel computer programming, is intended to pinpoint the arrival of rain-rich atmospheric rivers that have been both a drought-busting blessing and a flood-causing curse to the Russian River region.

It evolved from a searing lesson water managers got six years ago, when they released more than a third of the reservoir’s allowed capacity in anticipation of storms that never arrived. Then the state’s prolonged drought set in.

Under the new program, called Forecast Informed Reservoir Operation, or FIRO, the Army Corps of Engineers, which operates the reservoir, will hold onto the extra water as long as no atmospheric river is imminent.

Read more at https://www.pressdemocrat.com/news/9014821-181/advance-in-storm-forecasting-allows

Author SuzannePosted on Categories Climate Change & EnergyTags , , , , ,

Close to Home: What new climate report says. It’s urgent

Carl Mears, PRESS DEMOCRAT

Carl Mears is lead author for the Climate Science Special report: Fourth National Climate Assessment, Volume I, U.S. Global Change research Program

As was recently reported in The Press Democrat, the U.S. government recently released the first volume of the Fourth National Climate Assessment. As one of the 51 authors of the report, (and the only one from the private sector), I was relieved that there was no political interference in the writing and editing process. The report accurately represents the conclusions of the expert scientists on the writing team.
The report is 477 pages of fairly technical reading, so I doubt that most people are ready to read it cover to cover. But I can summarize it in just three sentences:
— Global warming is happening now.
— It’s caused by human activities, mostly emission of carbon dioxide.
— And the consequences are beginning now
— and becoming increasingly serious as the warming continues.
These statements are not the personal opinions of the writing team. Every “key finding” in the report is defended by a “traceable account” that describes the scientific reports we read and synthesized to reach that conclusion.
Since this column is titled “Close to Home,” I thought I’d highlight several new findings that are of special concern to Californians and residents of Sonoma County.
Our report is the first to address sea level rise while considering troubling new results about the stability of ice sheets in Antarctica. By 2100, the expected range of sea level rise is between one and four feet. But because we do not know exactly how the ice in Antarctica will respond to warming oceans, a sea level rise of eight feet cannot be ruled out. This amount of sea level rise would flood a lot of low-lying land around the San Francisco Bay, including significant parts of downtown Petaluma.
Much of California depends on the Sierra snowpack to store water. New, more advanced climate models are able to predict the state of the spring time snow in the Sierra. Unless we begin to curtail carbon dioxide emissions soon, warming temperatures will lead to rising snow levels and more wintertime precipitation will fall as rain in the Sierra Nevada. Under the assumption of continued high carbon dioxide emission, the snow levels increase by more than 1,000 feet, leaving much of the mountain region north of Interstate 80 snow free at the end of the winter.
The water that should flow down the rivers in July and August comes much earlier in the year, threatening vital infrastructure such as dams and levees and reducing the amount stored for summer use.
Another consequence of warming temperature is the drying of soil and vegetation during our long, dry summers. Last month’s tragic fires bring the threat of wildfire to the forefront of our attention.
Because of dryer summer conditions, and the large swaths of dead trees killed by the warmer, more stressful climate, our report concluded that wildfires will increase over the entire western United States, a trend that has already been measured in almost every region of the West.
Drier conditions will also increase the need for irrigation, even as our state’s capacity to store water is reduced by the dwindling snowpack.
So, what should people do with this information?
Get informed and involved with organizations that work on policy solutions. While personal commitments such as riding your bike to work are good, they must also be supported by deeper systemic changes to our energy system. These changes cannot be achieved by individuals acting in isolation.
Read more at: Close to Home: What new climate report says. It’s urgent

Author SuzannePosted on Categories WaterTags , , , , , , ,

Why some western water agencies are writing 100-year water plans 

Jerry Redfern, NewsDeeply

The plan calls for increased water conservation through groundwater management (including recharging the aquifer beneath Albuquerque), surface-water management (including protecting current water rights and buying more in the future), watershed restoration, water recycling and reuse programs and stormwater capture and storage.

In February of this year, the largest water district in a state with little water enacted a plan that attempts to manage that increasingly fickle resource for 100 years.
The plan, Water: 2120, is the Albuquerque Bernalillo County Water Utility Authority (ABCWUA) in New Mexico’s blueprint to direct water procurement, protection and use for the next century.
“This really came out of eight to 10 of us sitting around in a room every Wednesday morning and talking this through,” said Katherine Yuhas, water resources manager at ABCWUA and one of the lead planners on the project.
It’s common for water agencies to develop plans looking 20 to 40 years ahead, or in some cases 50 to 60 years. And ABCWUA, of course, has had planning documents in the past, the last one looking 60 years out. But “this is the first one to take into account climate change,” Yuhas said, and “it’s the first one to look out 100 years.” Plus, it covers everything from watersheds to infrastructure to household use.
Other Western water groups are also working on long-range plans. Santa Fe is looking closely at Water: 2120. Next year, Austin Water plans to unveil Water Forward, which it calls, “a water plan for the next century.”
And in Arizona, the Office of Assured and Adequate Water Supply Program at the Department of Water Resources requires new developments in certain metropolitan areas to show they have physical and legal access to water for 100 years.
Read more at: Why Some Western Water Agencies Are Writing 100-Year Water Plans — Water Deeply

Author SuzannePosted on Categories Water, WildlifeTags , , , , , , , , ,

Sonoma County Water Agency manager named head of California Department of Water Resources

Guy Kovner, THE PRESS DEMOCRAT
Grant Davis, general manager of the Sonoma County Water Agency, was tapped Wednesday by Gov. Jerry Brown as the state’s new director for the Department of Water Resources, handing a veteran of North Bay politics and water policy a central role in Brown’s controversial bid to overhaul California’s water system with a $17 billion pair of tunnels under Sacramento-San Joaquin Delta.
Davis, 54, has led the county Water Agency since 2010 and is set to begin in his new post in Sacramento in August, pending confirmation by the state Senate. The Department of Water Resources is the lead state agency providing water for 25 million residents, farms and business.
Its most contentious proposal under Brown is the pair of massive tunnels intended to convey Sacramento River water under the Delta and deliver it to users to the south, including farmers in the San Joaquin Valley and cities in Southern California.
“The governor supports that California WaterFix and so do I,” Davis said Wednesday, using the nickname for the disputed project that pits Northern California water and environmental interests against influential agricultural and urban users south of the Delta.“
I will be a major participant in that effort,” Davis said in a telephone interview from Washington, D.C., where he was on an unrelated trip to lobby for funding to support long-range weather forecasting.
Davis would succeed former DWR Director Mark Cowin, who retired late last year along with the agency’s chief deputy director, Carl Torgersen. The appointment comes as the state continues to emerge from a historic five-year drought, with a push to fortify supplies, build new reservoirs and protect the environment — initiatives that can be in conflict.
Davis said there is “a long way to go” in addressing the state’s water demand and a need to “find a balance” between water supplies and protection of “habitat and fisheries.”
Read more at: Sonoma County Water Agency manager named head of California Department of Water Resources | The Press Democrat