GET WET!

By Rachel Salvidge

The Wyre estuary, about two miles downstream from the AGC Chemicals Europe site in Thornton-Cleveleys.

A chemicals company is releasing large quantities of a “forever chemical” described as being “very persistent, mobile and toxic” into the River Wyre in Lancashire each year, and is not breaking any rules.

Earlier this year, the Guardian and Watershed Investigations revealed that effluent coming from the site of AGC Chemicals Europe in Thornton-Cleveleys could contain about 700 types of perfluorinated and polyfluorinated alkyl substances (PFAS).

PFAS is an umbrella term for thousands of human-made substances known as “forever chemicals” because they will not break down in the environment for thousands of years. Some are also known to be toxic and can accumulate in the human body.

The Environment Agency has now released its evaluation of a PFAS known as EEA-NH4 that was found in the effluent, and said it was “very persistent” and “mobile” in the environment, as well as “toxic” because it was classified as “reprotoxic category 2”, meaning there was evidence to suggest it could disrupt sexual function, fertility and development in humans.

The report highlights multiple gaps in knowledge, including whether, as with many PFAS, the substance builds up in humans and animals. “It is not possible to draw a conclusion on the bioaccumulation potential of EEA-NH4 in air-breathing organisms in the absence of data on the human clearance time or better predictive methods,” it states.

Prof Ian Cousins, an environmental chemist at Stockholm University, said: “EEA-NH4 is very persistent and mobile similar to GenX used by Chemours, which has been found in the Arctic, and it’s likely that EEA-NH4 will also be measured there as emissions continue. It will be transported by ocean currents, but even air emissions can result in long-range atmospheric transport.”

Dr David Megson, a senior lecturer in chemistry and environmental forensics at Manchester Metropolitan University, said the case highlighted “how we desperately need improved regulation and management of PFAS.

“Industry continues to innovate and develop new PFAS to replace those that have been banned. However, tougher regulations need to be put in place to ensure that these replacement chemicals are not also going to pose a risk to the environment and human health.

“This should not be at the detriment to industry, but we should use it as an opportunity for collaboration to develop safer sustainable replacements for PFAS.”

EEA-NH4 is just one of more than 10,000 chemicals classed as PFAS and currently there are only restrictions on the manufacture and use of two – perfluorooctane sulfonate (PFOS) and perfluorooctanoic acid (PFOA) – because they have been studied closely and linked with a range of diseases including cancers and thyroid problems.

AGC Chemicals Europe, which produces polytetrafluoroethylene (PTFE) and ethylene-tetrafluoroethylene (ETFE), said it “has never used PFOS, and PFOA was voluntarily phased out over a decade ago”.

In 2022, Watershed Investigations found discharges of 12,000 nanograms a litre of PFOA to the Wyre estuary coming from the site where AGC Chemicals is based. AGC said it did not use or manufacture PFOA, and that any PFOA in the effluent may have come from historical usage at the site. AGC’s discharge is not illegal.

Studies have also shown that some PFAS can disrupt normal reproductive function in women through altering hormone secretion, the menstrual cycle, and fertility, but any effects of the emissions of thousands of other PFAS remain a mystery.

Cousins said: “We know little about the consequences of the releases of the hundreds of other PFAS because we only understand the toxicities, and other properties, of a few PFAS.”

A spokesperson for AGC Chemicals Europe said the company was in “full compliance with UK and EU regulations” and that it “sets the highest standards for itself as a responsible member of the local community and a sustainable business. We welcome recent assessments by the Environment Agency to protect and improve the environment and, as part of this, to address the uses of PFAS in the UK.”

They said the “evaluations conducted by the Environment Agency do not indicate that the substances used in our manufacturing processes have caused environmental harm. Ecological monitoring of the River Wyre which has been conducted for over 40 years shows no significant impact of AGC Chemicals Europe emissions to the River Wyre estuary.

“We take our responsibilities for the management of substances used in and emitted from our manufacturing process extremely seriously. We are actively developing and improving processes that save energy and further reduce emissions from our process. AGC Chemicals Europe has invested significantly in abatement equipment to minimise emissions and we have committed additional investment to further reduce emissions by the end of 2024.

The spokesperson added that AGC Chemicals Europe “continues to work closely with the Environment Agency to ensure regular assessment of the substances we use”.

A spokesperson for the Department for the Environment, Food and Rural Affairs and the Environment Agency said: “Since the 2000s, we have increased monitoring and either banned or highly restricted a number of PFAS both domestically and internationally. We are continuing to work with regulators to further understand the risks of PFAS and implement measures to address them. The Environment Agency is working with AGC Chemicals to further understand potential concerns about the presence of EEA-NH4 in the environment so that appropriate action can be taken.”

Earlier this month, the Health and Safety Executive recommended that PFAS emissions be cut by developing restrictions under the chemicals regulatory regime known as UK Reach, as well as setting legal limits for PFAS in drinking water. The government said it has accepted the findings.

In the EU, the European Chemicals Agency is considering a proposal by Denmark, Germany, the Netherlands, Norway and Sweden to restrict the manufacture and use of about 10,000 PFAS in an effort to regulate them as a class, reduce emissions and make products safer.

FOR MORE INFORMATION: https://www.theguardian.com/environment/2023/apr/29/pfas-forever-chemical-river-wyre-lancashire-environment-agency

By American Institute of Physics

The configuration of the triple layer membrane.

When oil contaminates water, it creates a film that reduces oxygen levels and introduces toxic substances. This can lead to the death of aquatic plants and animals, contaminate soil, and ultimately threaten human health.

Separating oil from polluted water is therefore of great importance. Current methods can be expensive and challenging, and some may introduce further pollutants into the system. For example, membrane materials can act as a barrier to intercept oil, but their efficiency is low and they aren’t suited for long-term use.

In Biointerphases, an AVS journal published by AIP Publishing, researchers in China developed a fabrication method to increase the efficacy and longevity of membrane separation technology. The technology is greater than 99% effective at separating a petroleum ether-in-water emulsion.

The team created a nanofibrous membrane with electrospinning, in which a liquid polymer droplet is electrified and stretched to make fibers. They increased the roughness of the membrane surface by loading it with silver nanoparticles.

In water, this rough surface promotes a stable layer of water, which acts as a barrier to prevent oil droplets from entering the membrane.

“This hydration layer efficiently impedes the passage of oil droplets, reducing membrane pollution and enhancing the composite membrane’s permeability and separation efficiency,” said author Jindan Wu.

Silver nanoparticles also enhance the membrane’s antibacterial properties. Incorporating them minimizes the risk of membrane corrosion that can be caused by microorganisms.

“We have discovered that the membrane’s surface roughness and hydration layer strength are critical factors that impact its separation performance and anti-fouling ability,” said Wu. “This concept of depositing particles on nanofibrous membranes also has potential for broad applications with other materials.”

The current output capabilities of this fabrication method are relatively low. However, the group hopes developing such materials will contribute to a comprehensive solution for treating water pollution.

“Water pollution is caused by multiple sources, and oily wastewater is just one of them,” said Wu. “It is of vital importance to develop materials that can treat for dyes, heavy metals, and bacteria present in water.”

FOR MORE INFORMATION: https://www.sciencedaily.com/releases/2023/04/230425111147.htm

By Brendan O’Boyle, Henry Romero and Carlos Carrillo

Gabriela Gonzalez, 22, walks after filling a plastic bucket with water to take home, on the shore of Villa Victoria Dam, part of the Cutzamala System collecting water for distribution into Mexico City and the metropolitan areas, in Villa Victoria, Mexico April 26, 2023.

Every day, at a well near her home in Central Mexico, Isabel Solis fills plastic jugs with river water and loads them on her donkey to lug home for the day’s cooking, cleaning and drinking.

Solis, 64, lives on the banks of Mexico’s Villa Victoria reservoir, which supplies water to the bustling capital hours away but does not reach her own faucets.

“Those with money are the ones who get water,” Solis said.

Villa Victoria is part of the Cutzamala System, the source of water for about six million people in Mexico City and the surrounding state of Mexico.

Climate change, chaotic urban growth and inefficient infrastructure have strained Mexico’s water supplies, pushing the Cutzamala System’s stores to their lowest level in 27 years.

Water stress is a problem for much of the country. This month, some 200,000 residents in the city of San Luis Potosi have suffered water shortages for 22 days, the city’s mayor said, after failures of a pipeline from a key reservoir. 

Nearly half of Mexico’s municipalities were experiencing drought in late March, according to national water agency CONAGUA.

“We are seeing climate change in the form of droughts in the country’s center and north, but we also have the opposite effects in the form of abundant rains in the south and southeast,” said CONAGUA’s director German Martinez.

Mexican President Andres Manuel Lopez Obrador has pushed companies to invest in the country’s south, arguing that water is too sparse in the more industrialized north. The drive almost threatened to derail a $5 billion factory deal with Tesla this year.

Infrastructure also plays a role, with leaks plaguing the network that lugs water up to and across Mexico’s high-altitude capital.

“The distribution system is very deficient,” said Martinez, adding that nationwide an average of 30% to 40% of water supply is lost to leaks.

While the sprawling capital region’s rainy season helps replenish reservoirs, most rainwater is not captured.

It does not help that Mexico City, North America’s largest metropolis, “grew without adequate planning,” said Ramiro Gutierrez, an engineer and assistant manager of drinking water supply at CONAGUA.

Gutierrez added that “rainwater no longer absorbs into subsoil that is now covered by roads or houses,” and that strengthening storms are concentrating rain water into fewer days and making it harder to capture.

Officials are taking steps to increase the capital region’s supply. Last year, the governments of Mexico City and the state of Mexico announced a 300-million-peso ($16.55 million) canal upgrade with CONAGUA in the state of Michoacan to increase the water flowing to the El Bosque reservoir, which officials say will provide more water to communities surrounding the Cutzamala System.

Mexico City is also tapping alternative sources of water outside the Cutzamala System, including by replacing wells in the Zumpango area in the state of Mexico.

In late March, Mexico’s air force began what is known as cloud seeding over the Cutzamala System, a process of releasing silver iodine into clouds to stimulate condensation and ultimately rainfall.

Air Force meteorologist and Second Captain Ricardo Torres told Reuters the strategy was “very successful” in the states of Nuevo Leon and Tamaulipas and will be employed until May 7 to try to restore the Cutzamala System’s reservoirs.

Mexico’s constitution ensures the right of access to water, adding urgency to officials’ efforts. But for people like Israel, who lives just a few minutes’ drive from the Cutzamala System’s water treatment plant and asked not to use his last name, the constitution’s promise is increasingly distant.

“In recent years things have become more complicated. The water is more scarce,” Israel told Reuters while filling a tank at his home with water he brought from a river to use for washing and household tasks.

“Before, we didn’t have to struggle so much with water.”

($1 = 18.1216 Mexican pesos)

FOR MORE INFORMATION: https://www.usnews.com/news/world/articles/2023-04-27/mexico-citys-thirst-for-water-lays-bare-inequalities-changing-climate

By Penn State

A mother duck and two ducklings swimming in a pond (Image from BCSPCA)

Each year approximately 10 million waterfowl fly north to their breeding grounds in the Prairie Pothole Region of North America, but the landscape that greets them has changed. Weather patterns and agricultural practices have significantly transformed the pothole-dotted native grasslands that waterfowl have used for thousands of years.

These changes have resulted in some waterfowl proliferating while others decline. According to a new study by a Penn State-led research team, nesting date is an important factor in determining winners and losers in the Prairie Pothole Region.

Waterfowl nest in a variety of habitats in the region, including idle grassland, cropland and over water, according to team leader Frances Buderman, assistant professor of quantitative wildlife ecology.

“But when early nesting ducks arrive in the Prairie Pothole Region, many fields are covered in debris left from the previous fall’s harvest, mainly stubble from cereal grains,” she said. “Although this habitat looks inviting, the eventual replanting of these fields, as opposed to leaving them fallow, makes the ducks more vulnerable to predators and often results in their nests being destroyed by agricultural activities such as tilling and planting.”

The U.S. Fish and Wildlife Service and the Canadian Wildlife Service have monitored spring population abundances for North American waterfowl using the Waterfowl Breeding Population and Habitat Survey since 1955 — producing one of the largest datasets on vertebrate populations in the world.

These ducks are adapted to nest in mixed-grass prairie, and as that wild habitat has largely been replaced by agriculture in the Prairie Pothole Region, the birds are confused, Buderman explained.

“Last year’s stubble looks good to them from the air, but in reality, it does not offer the same advantages and protections that the grass does,” she said. “Over time, on a large scale, this association with cropland can lead to lower reproductive success and declining population numbers for early nesting ducks that breed in the region.”

In earlier research, Buderman’s research group in the College of Agricultural Sciences focused on northern pintail ducks, a species that has been in decline since the 1980s. They identified the proclivity of northern pintails to nest in agricultural fields as an “ecological trap” because the number of pintail the following year — a product of demographic processes, such as reproduction and survival — declined with increasing use of cropland.

However, the researchers were left wondering if the response of northern pintail was unique, possibly providing an explanation for the diverging trends in abundance among waterfowl in the region.

In findings published on April 24 in the Journal of Animal Ecology, Buderman and colleagues report that the timing of nesting is a key factor in determining the effect of nesting in cropland on demographic processes. Early nesting ducks had the strongest negative demographic responses to agricultural fields.

“This isn’t to say that all early nesting waterfowl are going to struggle,” Buderman said. “Early nesting ducks that don’t nest in cropland, and diving ducks such as canvasbacks, nest over water and are not likely to be impacted by this trap. Climate change, which may allow farmers to till and plant earlier in the spring, could make matters worse. An earlier spring warm-up could also lead to a mismatch between nesting activities and food availability.”

To reach their conclusions, the researchers analyzed data from the Waterfowl Breeding Population and Habitat Survey from 1958 to 2011 and focused on nine duck species that have traditionally used the Prairie Pothole Region as their breeding grounds: American wigeon, blue-winged teal, canvasback, gadwall, mallard, northern pintail, northern shoveler, redhead and ruddy duck.

The researchers estimated species-specific responses to climate and land-use variables in the region, which has changed from mixed-grass prairie to fields of cereal grain, oil crops, corn, wheat, sunflower and soybean.

They first estimated the effects of changes in climate and land-use variables on habitat-selection and population dynamics for the nine species, evaluating species-specific responses to environmental change. This allowed the researchers to see patterns in species-level responses and identify where species selected for variables that were detrimental to their population dynamics (such as northern pintail and cropland).

They found that northern pintail, American wigeon and blue-winged teal often had extreme responses to changes in habitat, although not always in the same way, Buderman pointed out.

“Each of the species we studied reacted a bit differently to changes in climate and land-use,” she said. “We observed species-level differences in the demographic and habitat-selection responses to climate and land-use change, which would complicate community-level habitat management. Our work highlights the importance of multi-species monitoring and community-level analysis, even among closely related species.”

Contributing to this research were James Devries, Institute for Wetland and Waterfowl Research, Ducks Unlimited Canada, and David Koons, Department of Fish, Wildlife, and Conservation Biology and Graduate Degree Program in Ecology, Colorado State University.

This research was funded by the U.S. Department of Agriculture’s National Institute of Food and Agriculture, Delta Waterfowl, California Department of Water Resources and the James C. Kennedy Endowment for Wetland and Waterfowl Conservation at Colorado State University.

FOR MORE INFORMATION: https://www.sciencedaily.com/releases/2023/04/230427114555.htm

By Amanda Hernandez and Mark Nichols

A view of the Cape Fear Memorial Bridge over the Cape Fear River and the downtown area of Wilmington, N.C., Feb. 26, 2016.

Synthetic chemicals are being detected in America’s water supply at a rapid rate, potentially affecting millions of people over the past two decades, according to a data analysis by ABC News.

Researchers say that when people are exposed at high levels, these chemicals can increase certain health risks.

Per- and polyfluoroalkyl substances, also known as PFAS or forever chemicals, are a group of approximately 12,000 chemicals used to make a variety of industrial and consumer products such as nonstick pans, food packaging and firefighting foam.

Researchers are still studying the potential health impacts, but exposure at high levels have been linked to various health problems, including kidney and testicular cancer, high cholesterol and reduced response to vaccines, according to Jamie DeWitt, a professor of pharmacology and toxicology at East Carolina University.

The data, collected by ABC News from federal and state environmental agencies, show the number of new detections in water sources each year rose from 753 in 2013 to 2,321 in 2021.

That equates to at least 143 million Americans who have been possibly drinking, bathing and cleaning with contaminated tap water during that period. Additionally, millions more who may have been exposed to PFAS through contaminated water supplies at military installations, airports, manufacturing plants and other sources.

Researchers say that although most people in the U.S. have some level of PFAS in their blood, the health risks are greatest for those that have the highest exposure.

Last year, the National Academies of Sciences, Engineering and Medicine put out medical guidelines suggesting that people whose blood contains a high level of PFAS (more than 2 nanograms per milliliter) should get additional screening for high cholesterol, cancer and other potential health risks. People with lower levels of PFAS in their blood “are not expected to have adverse health effects,” according to the committee.

An ABC investigation found significant disparities in PFAS exposure in the U.S.

While PFAS contamination is widespread, contaminated water sites are more prevalent in ZIP codes that are poorer and more racially diverse than the national average, the analysis also found.

Of the ZIP codes where PFAS was detected in water sites, 49% were in ZIP codes where the median household income was below the 2020 national average of $67,521.

One in six ZIP codes with PFAS-contaminated water sites have a higher proportion of non-white population than the national average of 42.2%.

“(Contamination) is sprinkled in every single state in the country. It’s sprinkled in communities small, large, rural, urban, suburban. It’s all over the place,” Erik Olson, the senior strategic director for health at the Natural Resources Defense Council, told ABC News.

The 191-mile Cape Fear River, which runs through the region, is the most industrialized in the state – lined with manufacturing and agricultural plants. It is a drinking water source for more than 1.5 million residents in the region.

A North Carolina newspaper first reported in 2017 that a former DuPont chemical plant had dumped PFAS chemicals into the Cape Fear River for nearly 40 years.

DuPont owned the facility that polluted the river from 1968 until 2015, when it spun-off its PFAS business to a separate business, the Chemours Company.

Because Chemours was operating the facility at the time contamination was discovered in the river, the state of North Carolina investigated and fined the company $12M for violating clean water laws – part of a consent order the company agreed to in order to avoid further litigation.

DuPont officials would not respond to interview requests from ABC News. They were not charged with any wrongdoing because they had sold the company prior to 2017.

Although the Chemours Company declined to speak to ABC News for this story, they did provide an emailed statement saying, “We have and continue to implement state-of-the-art technologies, including a thermal oxidizer completed in December 2019 that destroys over 99.99% of PFAS air emissions.”

The company says it does additional work to treat the “legacy pollution” and reduce PFAS compounds from reaching the Cape Fear River.

Still, there’s an ongoing impact from PFAS contamination on residents in the region.

“North Carolina is kind of ground zero for unlocking and understanding where we are right now with PFAS contamination, especially with drinking water,” Emily Donovan, co-founder of Clean Cape Fear, told ABC News.

“It was kinda like a slow, rolling nightmare. Like a nightmare that you can’t wake up from,” Donovan said.

Blood tests performed between 2020 and 2021 on hundreds of residents in New Hanover and Brunswick counties in the Cape Fear region show almost all had levels of 44 different PFAS chemicals in their bodies.

The median blood level for PFAS chemicals in residents of New Hanover and Brunswick counties was 6 parts per trillion –– far above the national average.

In nearby Cumberland County, Carolyn McDonald, a lifelong area resident, is convinced PFAS contamination has contributed to her health problems.

She used to love the taste of well water straight from the ground. But when she heard the groundwater was contaminated, she began to worry.

“I’ve been drinkin’ groundwater from the well all my life,” she said.

Now, McDonald, and her family, who live in the Fayetteville, North Caroline, area, buy bottled water twice a month.

June 5 will mark five years since she began kidney dialysis treatment. She wakes up at 3 a.m., three times a week, to travel about 30 miles to her dialysis center.

McDonald said she was shocked when she was diagnosed with kidney disease.

While impossible to prove PFAS was the cause of McDonald’s illness, research studies say that PFAS contamination increases the risk of kidney disease.

She says she also has nephews, a niece, brothers and friends who also lived in the area and drank the well water – who also suffer from kidney-related problems.

When she learned the contaminated groundwater could be a contributing factor for kidney disease, she says it all made sense.

“All these illnesses, all (of) us … drinkin’ the water. There’s gotta be a connection between the illness and the water,” she said.

The Environmental Protection Agency is responsible for monitoring PFAS contamination across the U.S. In October 2021, the EPA released its plan for addressing the problem, but by early 2023, it had only issued a few advisories and missed key deadlines.

This past March, the EPA proposed the first federal limits on six forever chemicals in drinking water. The proposal includes setting a limit of 4 parts per trillion, the lowest level that can be accurately measured, for two types of PFAS chemicals called PFOA and PFOS.

EPA Administrator Michael Regan said his strategy is to “hold corporate polluters accountable and work towards regulations that make it very clear what is safe and what is not safe.”

FOR MORE INFORMATION: https://abcnews.go.com/US/pfas-entering-americas-water-supply/story?id=98479678

By AP

The Oroville Dam, top right, holds back water at Lake Oroville on March 25, 2023, in Butte County, Calif. Regulators say California will provide 100% of the water requested by cities and farms for the first time in years thanks to winter storms that filled reservoirs and runoff from a record snowpack

California will provide 100% of the water requested by cities and farms for the first time in years thanks to winter storms that filled reservoirs and runoff from a record snowpack, regulators announced Thursday.

The State Water Project will provide full allocations to 29 water agencies supplying about 27 million customers and 750,000 acres of farmland, the Department of Water Resources said.

As late as March, the agency was only expecting to provide 75% of requested water supplies.

The last time the state agency fully met water requests was in 2006.

Meanwhile, the federal Bureau of Reclamation announced it was increasing water allocations for the Central Valley Project to 100% for the first time since 2017.

The move was cheered by contractors who supply the federal water to the state’s agricultural heartland. It will provide much-needed water to communities, farms and families in the San Joaquin Valley, said a statement from Jose Gutierrez, interim general manager of Westlands Water District.

“Following two years of 0% allocations, this water supply will assist growers in Westlands with putting the land to work to grow the food that feeds the world,” he said.

Both the state and federal governments control networks of reservoirs and canals that supply water across California.

Three years of drought had pinched off supplies drastically in the nation’s most populous state. Late last year, nearly all of California was in drought, including at extreme and exceptional levels. Wells ran dry, farmers fallowed fields, and cities restricted watering grass.

The water picture changed dramatically starting in December, when the first of a dozen “ atmospheric rivers ” hit, causing widespread flooding and damaging homes and infrastructure, and dumping as many as 700 inches (17.8 meters) of snow in the Sierra Nevada mountains.

The statewide reservoir storage on Thursday was at 105% of the average for the date, the Department of Water Resources said.

The runoff from the melting snow will supply additional water that the state agency said it is working to capture.

As of this week, more than 65% of California no longer had drought conditions, according to the U.S. Drought Monitor.

However, the Department of Water Resources urged people to continue using water cautiously. State officials have warned that in the era of climate change, one extremely wet year could be followed by several dry years, returning the state to drought.

The state water agency noted that some northern areas of the state still have water supply issues. In addition, some areas, including the agricultural Central Valley, are still recovering after years of pumping that has depleted underground water.

“Millions of Californians rely on groundwater supplies as a sole source of water,” the agency warned.

“The Colorado River Basin, which is a critical water supply source for Southern California, is still in the midst of a 23-year drought,” the agency added. “Californians should continue to use water wisely to help the state adapt to a hotter, drier future.”

FOR MORE INFORMATION: https://apnews.com/article/california-water-supply-increase-storms-405f2b9df8e8a01691d6e1f81913a0f4

By Greg Haas

Image from 8NewsNow

Lake Mead will rise 33 feet higher than expected this year because of snowpack levels in the Upper Colorado River Basin, according to estimates released Thursday by the U.S. Bureau of Reclamation.

Snow that will melt and feed the Colorado River is causing major adjustments in government plans to store water in Lake Powell and Lake Mead. 8NewsNow.com reported on April 12 that water flows have already increased from Lake Powell, a fact confirmed by the U.S. Bureau of Reclamation’s April 24-month study.

Now the government is revealing plans that include increasing the amount of water released from Lake Powell by 35% this year. The plan to release 7 million acre-feet has been adjusted to 9.5 million acre-feet — a difference of more than 800 billion gallons of water by the end of the year.

It’s the good news Las Vegas has been waiting for after two decades of watching the bathtub ring at Lake Mead. But to put one good year in perspective, the Bureau of Reclamation said Lake Powell and Lake Mead — the two biggest reservoirs in the country would go from 23% full to 26% full.

Snowpack levels at the beginning of April were around 160% of normal. Water managers regard the start of April as the peak of the snowpack, when spring temperatures begin to melt snow faster than new snow accumulates.

The high snowpack levels are translating to an expected flow in the Colorado River that’s 177% of normal levels.

The Burea of Reclamation also announced plans for a “high-flow release” later this month, when water will come out of Glen Canyon Dam at a rate of 35,900 cubic feet per second. That will move sediment stored in the river to build up beaches, “which will benefit conditions at Grand Canyon National Park and aid in management of invasive species in the Colorado River,” officials said. 

This winter’s snowpack is promising and provides us the opportunity to help replenish Lakes Mead and Powell in the near-term — but the reality is that drought conditions in the Colorado River Basin have been more than two decades in the making,” Reclamation Commissioner Camille Calimlim Touton said. “Despite this year’s welcomed snow, the Colorado River system remains at risk from the ongoing impacts of the climate crisis. We will continue to pursue a collaborative, consensus-based approach to conserve water, increase the efficiency of water use, and protect the system’s reservoirs from falling to critically low elevations that would threaten water deliveries and power production.” 

While Lake Mead raises by 33 feet — to an expected 1,068.05 feet this year — Lake Powell will go up by 40 feet to 3,576.50 feet, holding back an extra 2.74 million acre-feet of water from the higher runoff. Lake levels are expressed as the elevation of the lake’s surface compared to sea level.

Lake Mead is currently at 1,047.03 feet (as of noon today). The lake typically rises in spring months and begins to drop around July and continuing for the remainder of the year. The extra water from Lake Powell this year could change that pattern.

For the past few years as the megadrought has had its most severe impact on the river, water managers have adjusted releases from Glen Canyon Dam, trying to maintain hydropower production as water levels dropped to their lowest levels since the dam was built and Lake Powell was initially filled. The adjustments meant holding back water that would typically go downstream to Lake Mead.

This year’s snowpack provides a break from “emergency” adjustments to dam operations as the reservoirs finally fill — even if it’s only to 26% capacity.

The Colorado River Compact — a century-old agreement — determines how much water each state is entitled to take as the river flows from its headwaters in the Colorado Rockies all the way to the Gulf of Mexico. Nevada takes only a small share of that water, but the drought cut allocations as the federal government formally declared a water shortage.

None of the announcements on Thursday change the situation with lower allocations for Nevada, Arizona and California.

FOR MORE INFORMATION: https://www.8newsnow.com/news/local-news/good-news-for-lake-mead-as-water-level-set-to-rise-thanks-to-healthy-snowpack/

By BBC

Volunteers were needed to take samples around the lake at the same time

Dozens of volunteers have been recruited for a mass sampling of water in England’s largest lake.

Concerns have been raised about the water quality in Windermere after raw sewage discharges and the presence of blue green algae.

The Freshwater Biological Association (FBA) which runs the survey said it needed help so all the samples could be taken at the same time.

Head of science Louise Lavictoire said it “couldn’t go out and sample 100 different points all at the same time in a single day”.

She said it was “fantastic” to have help in terms of logistics “but it also means that people understand a bit more about what is happening with the lake”.

Data was available from samples taken from the middle of the lake but the FBA wanted to test water at the shoreline where “most people interact” with it, she said.

Windermere is ecologically important and home to rare fish species such as the Arctic charr.

Concerns have been raised about algal blooms and bacterial pollution and the potential harm to people and wildlife.

The survey collected about 100 samples on Sunday which will be analysed for nutrients and bacteria.

The FBA said there was less information available about how the lake’s water changed through the seasons, which is why it intended to run the survey four times a year.

The organisation said it had an “excellent response” to its call for volunteers, some of whom had helped with all four surveys carried out so far.

“We’ve got a lot of people who keep coming back because they recognise the importance,” Ms Lavictoire said.

“The water quality and the bacterial quality of these water bodies changes over time, it’s not static.

“The great thing about doing the same sites each time is that we can start the patterns and start to see where the problem points might be.”

FOR MORE INFORMATION: https://www.bbc.com/news/articles/c4nkl714x79o

By Reuters

A view shows a bridge and sandbanks of the Loire River in Montjean-sur-Loire, as France faces records winter dry spell raising fears of another summer of droughts and water restrictions

Very low groundwater levels have put France on course for a worse summer drought than last year, mainly in the southern part of the country which had been ravaged by massive wildfires, French geological service BRGM said on Thursday.

France suffered its worse drought on record last summer and, like most of Europe, has faced a dry winter that has prompted concerns over water security across the continent.

“The situation is worrying because the whole of France is affected and we have had several dry years,” BRGM hydrologist Violaine Bault said.

Groundwater levels are generally below those of 2022 and recharge is insufficient in most of the country after a particularly dry winter, she said, adding that many parts of France would very likely need to introduce water restrictions in the summer, notably in central regions and around Paris.

Some groundwater levels were at their lowest on record in the wine-making Roussillon region and in the southern Var region, which hosts the tourist town of Saint-Tropez. Both suffered repeated large wildfires over the past summers.

Crops that could be affected by a lack of water in southern France mainly include fruit and vines. The region grows little grain.

Weather forecaster Meteo France said on Thursday that rainfall in March had returned soil humidity to normal levels after record lows at the start of the month.

However, the soils, which were already dry at the end of February, dried up further in southeastern part of the country and reached record low moisture values in surface soils in the southwestern Aude and Pyrenees-Orientales regions, it said.

FOR MORE IMFORMATION: https://www.usnews.com/news/world/articles/2023-04-13/france-heading-towards-worse-summer-drought-than-2022-institute

By University of Southampton

Image of a lake that dried up (Image from DW)

‘Flash droughts’ have become more frequent due to human-caused climate change and this trend is predicted to accelerate in a warmer future, according to research published today [13 April 2023] involving the University of Southampton.

The research published in Science shows that flash droughts, which start and develop rapidly, are becoming ‘the new normal’ for droughts, making forecasting and preparing for their impact more difficult.

Flash droughts can develop into severe droughts within a few weeks. They are caused by low precipitation and high evapotranspiration, which quickly depletes the soil of water. While they start quickly, the droughts can last for months, damaging vegetation and ecosystems, and triggering heat waves and wildfires.

A multinational group of researchers wanted to understand if there had been a transition from conventional ‘slow’ droughts to flash droughts and how this trend will develop under different carbon emission scenarios.

“Climate change has effectively sped up the onset of droughts,” says Professor Justin Sheffield, Professor of Hydrology and Remote Sensing at the University of Southampton and co-author of the paper.

“While it varies between different regions, there has been a global shift towards more frequent flash droughts during the past 64 years.”

The transition to flash droughts is most notable over East and North Asia, Europe, the Sahara, and the west coast of South America. Some areas, such as eastern North America, Southeast Asia and North Australia, saw fewer flash and slow droughts, but the speed of drought onset had increased. In the Amazon and West Africa, there was no evidence of a transition to flash droughts; the Amazon saw an increase in slow droughts and West Africa saw an increase in the frequency and extremity of both fast and slow droughts.

Professor Justin Sheffield added: “As we head towards a warmer future, flash droughts are becoming the new normal. Our models show that higher-emission scenarios would lead to a greater risk of flash droughts with quicker onset which pose a major challenge for climate adaptation.”

The transition to flash droughts may have irreversible impacts on ecosystems as they may not have enough time to adapt to a sudden lack of water and extreme heat. Forecasting flash droughts is also difficult as current approaches to predicting droughts use longer time scales.

The researchers say new approaches are needed to provide early warnings of flash droughts, as well as a better understanding of how natural ecosystems and humans will be impacted.

Funding for the research was provided by the National Natural Science Foundation of China, the National Key R&D Program of China, the Natural Science Foundation of Jiangsu Province for Distinguished Young Scholars, and the UK-China Research & Innovation Partnership Fund through the Met Office Climate Science for Service Partnership (CSSP) China as part of the Newton Fund.

FOR MORE INFORMATION: https://www.sciencedaily.com/releases/2023/04/230413154232.htm