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vox_mundi

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Re: Water wars
« Reply #150 on: June 25, 2022, 03:39:32 PM »
Tap to drop a raindrop anywhere in the world and watch where it ends up

https://river-runner-global.samlearner.com/
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― anonymous

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

kassy

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Re: Water wars
« Reply #151 on: October 04, 2022, 09:53:43 AM »
As Himalayan Glaciers Melt, a Water Crisis Looms in South Asia

...

Just over a decade ago, relatively little was known about glaciers in the Hindu Kush Himalayas, the vast ice mountains that run across Central and South Asia, from Afghanistan in the west to Myanmar in the east. But a step-up in research in the past 10 years — spurred in part by an embarrassing error in the Intergovernmental Panel on Climate Change’s 2007 Fourth Assessment Report, which predicted that Himalayan glaciers could melt away by 2035 — has led to enormous strides in understanding.

Scientists now have data on almost every glacier in high mountain Asia. They know “how these glaciers have changed not only in area but in mass during the last 20 years,” says Tobias Bolch, a glaciologist with the University of St Andrews in Scotland. He adds, “We also know much more about the processes which govern glacial melt. This information will give policymakers some instruments to really plan for the future.”

That future is daunting. New research suggests that the area of Himalayan glaciers has shrunk by 40 percent since the Little Ice Age maximum between 400-700 years ago, and that in the past few decades ice melt has accelerated faster than in other mountainous parts of the world. Retreat seems to have also recently initiated in Pakistan’s Karakoram range, one of the few areas where glaciers had been stable. Depending on the level of global warming, studies project that at least another third, and as much as two-thirds, of the region’s glaciers could vanish by the end of the century. Correspondingly, meltwater is expected to increase until around the 2050s and then begin to decline.

...

https://e360.yale.edu/features/himalayas-glaciers-climate-change

Lots of details in the article.
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Alexander555

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Re: Water wars
« Reply #152 on: October 15, 2022, 10:20:53 PM »

kassy

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Re: Water wars
« Reply #153 on: October 17, 2022, 11:15:07 AM »
Experts warn climate crisis could exacerbate Nile dam tensions

With talks over Addis Ababa's Renaissance Dam deadlocked, experts say a major climate crisis event, such as inadequate rainfall or prolonged droughts, could soar tensions between Egypt, Sudan and Ethiopia.

...

Egypt continues to reel under the water problems. In 2007, the water scarcity in the country resulted in the "Revolution of the Thirsty" protests. By 2025, Egypt is projected to become completely water-scarce.

Sudan, also a water-scarce country fears Ethiopia's dam could impact its own hydroelectric projects.

...

https://www.trtworld.com/magazine/experts-warn-climate-crisis-could-exacerbate-nile-dam-tensions-61469

Not much news for those who have followed this over the years.
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kassy

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Re: Water wars
« Reply #154 on: October 30, 2022, 03:10:07 PM »
Battle of the Alps? Water Woes Loom Amid Climate Change

The crystal-clear waters from the Alps could become increasingly contested as the effects of climate change and glacier melt become more apparent. Italy wants them for crop irrigation in the spring and summer. Swiss authorities want to hold up flows to help hydroelectric plants rev up, when needed.

For the first time in four years, government envoys from eight Alpine countries — big, small and tiny — were meeting under a grouping known as the Alpine Convention, which was set up 30 years ago to help coordinate life, leisure and the limited resources from Europe's most celebrated peaks.

The envoys in Brig, Switzerland, representing pint-sized principality Monaco and small Slovenia as well as powerhouses like France, Germany and Italy, focused attention Thursday on what's known as the Simplon Alliance. Named after an Alpine pass between Italy and Switzerland, it aims to make transportation in the mountains eco-friendly, such as by favoring rail over roads, electric vehicles and public transportation over private cars.

But with global warming causing a worrying shrinkage in Alpine glaciers this year, the issue of water frozen up in the mountains, or showered and snowed on them, is growing in importance. Environmental advocates say jockeying for water isn't being addressed with enough urgency; they want the Alpine countries to do more to secure the future of the resource that's been bountiful for centuries.

While many parts of the world have grappled with water woes, well-irrigated and relatively rich Europe has been largely spared so far. Droughts and wildfires raise seasonal worries, but there typically is enough water for agriculture, hydropower, ski resorts, and human consumption. Swiss children were once taught their country was home to the continent's "water tower," according to Maria Lezzi, head of Switzerland's territorial development office.

...

However, factors like global warming, the fallout from Russia's war in Ukraine on energy supplies and economic demands have made the issue more pressing.

Last month, Swiss authorities authorized a seven-month increase in the amount of water available for electricity generation from 45 of Switzerland's 1,500 hydraulic plants — hoping to churn out up to 150 gigawatts more power. Alluding to the possible knock-on effect, the Swiss said the move could temporarily affect fish migration, "which could make replenishing fish populations more difficult in 2023."

Meanwhile, sparse summer rainfall and a punishing heat wave in northern Italy — which melted snowfields and glaciers in the area — dried up the Po River, jeopardized drinking water and threatened irrigation in what's known as the Italian food valley.

The "9th report on the State of the Alps" — drafted by the Swiss hosts — notes that water supply is a "particularly pressing issue" because the Alps are a huge reservoir of water, which ultimately flows to the benefit of 170 million people along some of Europe's most famous rivers, including the Danube, Po, Rhine and Rhone.

...

https://www.voanews.com/a/battle-of-the-alps-water-woes-loom-amid-climate-change-/6811445.html

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kassy

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Re: Water wars
« Reply #155 on: January 01, 2023, 04:15:32 PM »
The conflict will probably be resolved without a war but i still think skiing will lose out:

Skiing over Christmas holidays no longer guaranteed -- even with snow guns


For many people, holidays in the snow are as much a part of the end of the year as Christmas trees and fireworks. As global warming progresses, however, white slopes are becoming increasingly rare. Researchers at the University of Basel have calculated how well one of Switzerland's largest ski resorts will remain snow reliable with technical snowmaking by the year 2100, and how much water this snow will consume.

The future for ski sports in Switzerland looks anything but rosy -- or rather white. Current climate models predict that there will be more precipitation in winter in the coming decades, but that it will fall as rain instead of snow. Despite this, one investor recently spent several million Swiss francs on expanding the Andermatt-Sedrun-Disentis ski resort. A short-sighted decision they will regret in future?

A research team led by Dr. Erika Hiltbrunner from the Department of Environmental Sciences at the University of Basel has now calculated the extent to which this ski resort can maintain its economically important Christmas holidays and a ski season of at least 100 days with and without snowmaking. The team collected data on the aspects of the slopes, where and when the snow is produced at the ski resort and with how much water. They then applied the latest climate change scenarios (CH2018) in combination with the SkiSim 2.0 simulation software for projections of snow conditions with and without technical snowmaking. The results of their investigations were recently published in the International Journal of Biometeorology.

No guarantee of a white Christmas

According to the results, the use of technical snow can indeed guarantee a 100-day ski season -- in the higher parts of the ski resort (at 1,800 meters and above), at least. But business is likely to be tight during the Christmas holidays in coming decades, with the weather often not cold enough at this time and in the weeks before. In the scenario with unabated greenhouse gas emissions, the Sedrun region in particular will no longer be able to offer guaranteed snow over Christmas in the longer term. New snow guns may alleviate the situation to a certain extent, say the researchers, but will not resolve the issue completely.

"Many people don't realize that you also need certain weather conditions for snowmaking," explains Hiltbrunner. "It must not be too warm or too humid, otherwise there will not be enough evaporation cooling for the sprayed water to freeze in the air and come down as snow." Warm air absorbs more moisture and so, as winters become warmer, it also gets increasingly difficult or impossible to produce snow technically. In other words: "Here, the laws of physics set clear limits for snowmaking."

540 million liters

The skiing will still go on, however, because technical snowmaking at least enables resort operators to keep the higher ski runs open for 100 consecutive days -- even up until the end of the century and with climate change continuing unabated. But there is a high price to be paid for this. The researchers' calculations show that water consumption for snowmaking will increase significantly, by about 80% for the resort as a whole. In an average winter toward the end of the century, consumption would thus amount to about 540 million liters of water, compared with 300 million liters today.

But this increase in water demand is still relatively moderate compared with other ski resorts, the researchers emphasize. Earlier studies had shown that water consumption for snowmaking in the Scuol ski resort, for example, would increase by a factor of 2.4 to 5, because the area covered with snow there will have to be largely expanded in order to guarantee snow reliability.

For their analysis, the researchers considered periods of 30 years. However, there are large annual fluctuations: In addition, extreme events are not depicted in the climate scenarios. In the winter of 2017 with low levels of snow, water consumption for snowmaking in one of the three sub-areas of Andermatt-Sedrun-Disentis tripled.

Conflicts over water use

Today, some of the water used for snowmaking in the largest sub-area of Andermatt-Sedrun-Disentis comes from the Oberalpsee. A maximum of 200 million liters may be withdrawn annually for this purpose. If climate change continues unabated, this source of water will last until the middle of the century, at which point new sources will have to be exploited. "The Oberalpsee is also used to produce hydroelectric power," says Dr. Maria Vorkauf, lead author of the study, who now works at the Agroscope research station. "Here, we are likely to see a conflict between the water demands for the ski resort and those for hydropower generation."

...

https://www.sciencedaily.com/releases/2022/12/221228092241.htm

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kassy

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Re: Water wars
« Reply #156 on: February 15, 2023, 05:01:25 PM »
This Native American Tribe Is Taking Back Its Water

With a new state-of-the-art irrigation project, Arizona’s Pima Indians are transforming their land into what it once was: the granary of the Southwest

...

The sprawling civilization of the canal-building Huhugam—the Pima name for their ancestors, meaning “our people who have come before”—reached its pinnacle in the 15th century. Exactly what happened to it after that, however, is a mystery. Some evidence points to a protracted drought; other data, from the study of geological layers, suggests a series of massive floods destroyed large sections of the canal network. Pima oral tradition holds that a class rebellion overthrew the society’s elite. Whatever the reason, Huhugam culture experienced a precipitous decline, and desert winds eventually covered over their canals with sand, dirt and weeds. Gone, too, were their monumental four-story buildings, ball courts and villages, buried by the very desert soil that once sustained them.

...

The historic Pima farmed on a smaller scale than their ancestors, but their crops still fed much of what is now southern Arizona. But beginning in the late 19th century, the tribe endured decades of hunger, discrimination and a scourge of homesteaders and profiteers who diverted tribal water to quench the needs of booming new settlements.

Now, after more than a century, water has returned to the reservation. The Pima have gone from water impoverishment to water wealth, and the reservation now has rights to more water than anywhere else in Arizona, despite the region’s worst drought in 1,200 years. This profound change in the Pima’s fortunes represents a long-sought triumph over an ongoing historical injustice.

...

y the 1850s, the number of travelers moving through what is now southern Arizona increased dramatically. Tens of thousands of fortune seekers streamed through Pima territory headed for the gold fields of California. The Pima, who welcomed migrants, were known as “Good Samaritans of the desert.” Young Pima men would head southeast into the grueling stretch of desert between Tucson and Pima and Maricopa villages to assist pioneers overwhelmed by heat and thirst. Travelers were also welcome in the villages themselves, where the river provided shady, cool oases lined with cottonwoods, willows and mesquite.

The Pima raised wheat and corn, and made flour for the burgeoning market. The villages were known as the “granary of Arizona.” Between 1860 and 1864, the Pima quadrupled their production of grain. Pima and Maricopa farmers had more than 14,000 acres under cultivation.

The end of the Civil War brought another wave of fortune seekers who saw how productive the desert soils were and stayed in Arizona. In 1877, Congress enacted the Desert Land Act, allowing Western settlers to claim 640 acres as long as they improved it. In order to “prove up” their claim, many farmers dug canals, diverting water from the Gila.

...

The fight took nearly a decade, but in 2004, Congress passed the Arizona Water Settlements Act, which granted the Pima and Maricopa the rights to 653,500 acre-feet of water a year—the largest Indian water settlement in American history. (Because the Gila hasn’t reached anywhere near that level of flow in many years, the water is sourced primarily from groundwater and from the Colorado River.)

...

The Pima, now water rich, are joining growing efforts to conserve water. The region is in the grip of a mega-drought, the worst in 1,200 years, according to researchers who have analyzed tree ring data. Lake Mead, a Colorado River reservoir that is the source of water for 25 million people, is at a historic low. To stave off Lake Mead’s dropping to critically low levels, the Pima have agreed to leave a portion of their water allotment in the reservoir for at least the next three years in exchange for federal compensation.

https://www.smithsonianmag.com/innovation/native-american-tribe-pima-indians-taking-back-water-180981542/

Lots of details and pictures.
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longwalks1

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Re: Water wars
« Reply #157 on: March 25, 2023, 07:31:49 PM »
6000 protestors (1000 are violent) and 3000 police, water cannons, tear gas and rubber grenades.  The videos on telegram are showing an almost pitched battle (one wonders if the serious injuries to protestors preceded the burning of police vehicle) in Sainte-Soline in France over water.   Lots of quickie sources happening today, but from the past some background

https://www.lemonde.fr/en/france/article/2022/11/28/water-mega-basins-stir-up-turmoil-in-western-france_6005917_7.html

nov 28 2022

Quote
The police vans stand out along the horizon as if weightless, parked on a high dam in this relatively flat area of countryside. They are stationed at the four corners of the vast retention basin at Mauzé-sur-le-Mignon in western France, as well as at the one currently under construction at nearby Sainte-Soline. Both are intended for agricultural use, mainly for arable crops such as corn. Water resources have clearly become very valuable.

today

https://www.bfmtv.com/politique/gouvernement/bassines-de-sainte-soline-c-est-un-projet-vertueux-affirme-marc-fesneau-ministre-de-l-agriculture_VN-202303250306.html

Been rereading Cadillac Desert and yeah, look like another socialist water management plan to benefit big farms - ag and already rich folk.

kassy

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Re: Water wars
« Reply #158 on: June 26, 2023, 03:16:17 PM »
920 million people could face conflict over the world’s rivers by 2050: what our study found in Africa

The Grand Ethiopian Renaissance Dam project on the Nile River started operating in February 2022. It reinforced tensions between Ethiopia, Sudan and Egypt. The three countries rely most heavily on the Nile’s water. Sudan and Egypt consider the US$4.6 billion dam a threat to vital water supplies. Ethiopia sees it as essential for its development.

This is just one example of how conflicts can arise between states that share river basins. And there’s a real risk that such conflicts will become more common as global temperatures rise.

Hundreds of rivers are shared between two or more countries. Sharing waters can be a source of cooperation or conflict. This depends on economic, cultural and institutional conditions. It also depends on historical relations between countries.

Although cooperation historically prevails over conflict and large-scale violent international conflicts haven’t happened so far, tensions over water have long existed. They are also rising in several river basins.

Africa has 66 transboundary river basins. These include the Nile basin, and the Juba–Shebelle and Lake Turkana basins in the Horn of Africa. Conflict risk can rise as populations grow, water use intensifies and the climate changes.

There’s no consensus on the precise mechanisms that fuel conflict in such basins. It is, however, possible to identify basins where risks are projected to compound. This can be done by combining data on conflict risk conditions identified in existing literature.

In a recent study I conducted with three water system researchers from IHE Delft, Utrecht University and Wageningen University & Research, we came up with three possible futures regarding conflict risk in global transboundary river basins.

Our study projects that if nothing substantially changes in how transboundary river basins are managed and with climate change worsening, 920 million people will live in very high to high conflict-risk basins by 2050.

If nations improve water use, strengthen cooperation and do more to prevent or mitigate conflict, this number drops to 536 million.

and more:
https://theconversation.com/920-million-people-could-face-conflict-over-the-worlds-rivers-by-2050-what-our-study-found-in-africa-207553
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Ranman99

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Re: Water wars
« Reply #159 on: June 26, 2023, 04:35:14 PM »
Every thing I read that says 2050 I translate to 2029.
😎

Alexander555

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Re: Water wars
« Reply #160 on: June 29, 2023, 05:51:35 PM »

kassy

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Re: Water wars
« Reply #161 on: June 29, 2023, 06:25:48 PM »
Quote
Data collected from the Kansas Geological Survey in March this year showed that groundwater levels across the west and south-central Kansas declined by two feet last year.

After measuring 1,400 Ogallala wells, they found that there had been an overall decline of 1.89 feet in 2022.

...

Nebraska also saw an extremely dry summer last year, which led to an increase in pumping water from the aquifer.

In Chase County, the water levels have dropped by 100 feet since the 1950s, a report from the University of Nebraska-Lincoln found.

It is not sustainable. People happily ignore that.
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Alexander555

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Re: Water wars
« Reply #162 on: June 30, 2023, 08:54:55 AM »
The article is already a few years old.  But the tunnels and the canal Iran build have come into use not long ago. So Iraq will get less water. And Turkey also keeps building dams. https://www.mei.edu/publications/water-scarcity-could-lead-next-major-conflict-between-iran-and-iraq

Rodius

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Re: Water wars
« Reply #163 on: June 30, 2023, 10:17:47 AM »
Quote
Data collected from the Kansas Geological Survey in March this year showed that groundwater levels across the west and south-central Kansas declined by two feet last year.

After measuring 1,400 Ogallala wells, they found that there had been an overall decline of 1.89 feet in 2022.

...

Nebraska also saw an extremely dry summer last year, which led to an increase in pumping water from the aquifer.

In Chase County, the water levels have dropped by 100 feet since the 1950s, a report from the University of Nebraska-Lincoln found.

It is not sustainable. People happily ignore that.

A few years ago I watched a documentary about this and there was an interview with a farmer who used welled water complaining about how he is being told to stop doing it as much... he answer was "I dont care what they tell me, I will keep taking the water because I have a right to it."

All I could think was that he thinks the water will still be there forever and that there wont be any water to get sooner or later. A true disconnect.

I was surprised about his attitude.

John Batteen

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Re: Water wars
« Reply #164 on: July 01, 2023, 08:49:52 PM »
I'm sure he knows, he just doesn't care.  It will be the next guy's problem.

John_the_Younger

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Re: Water wars
« Reply #165 on: July 01, 2023, 11:03:27 PM »
This, I believe, is an example of the tragedy of the commons.  Some examples are more blatant than others.  "If I don't use it [up] now (and make money), my neighbors will use it (and I'll be left wanting."

Rodius

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Re: Water wars
« Reply #166 on: July 02, 2023, 03:44:47 AM »
This, I believe, is an example of the tragedy of the commons.  Some examples are more blatant than others.  "If I don't use it [up] now (and make money), my neighbors will use it (and I'll be left wanting."

I suspect that plays a big part in it.

If I was a farmer in that region with the pending (or current) water crisis getting worse, I would find other farming methods or crops or whatever that could work in that region that uses less water than the region can provide.

If that is possible, it is probably a good time to sell the land and leave because the region is becoming a desert.

kassy

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Re: Water wars
« Reply #167 on: July 31, 2023, 02:33:34 PM »
The Colorado Provides Drinking Water to 40 Million People. Do They Know What Utah Does to It Upstream?

...

Gas lines draped over the cliffs and crosshatched the swallow nests, serving as the most visible indication that high on the plateau above us lay the state of Utah’s most productive oil and gas fields. There are currently more than 13,000 active oil and gas wells in Eastern Utah’s Uinta Basin. Local environmentalists have dubbed this sparsely populated desert region “Mordor,” after J.R.R. Tolkien’s industrial hellscape. Hemmed in by high mountain ranges on three sides, the basin is home to only about 50,000 people stretched over 9,300 square miles. Yet it suffers Beijing-level air quality that frequently violates the Clean Air Act. “The place is completely decimated,” says Taylor McKinnon, the southwest director of the Center for Biological Diversity. “It’s one of the oil and gas sacrifice zones in the US.”

Some 40 million people depend on the Colorado for water. But the West’s most important river is predicted to shrink up to 30 percent or more by mid-century because of rising temperatures caused, in part, by the very fossil fuels extracted from its Utah watershed. And while scientists warn that the planet needs to stop burning these fuels in the next decade to prevent ecological catastrophe, Utah’s political leaders are actively pushing to quadruple oil and gas production in the basin. And they’re getting a lot of help from the Biden Administration.

The federal government plays an unusually outsized role in the Uinta Basin. That’s because more than 70 percent of the land there is public, including Dinosaur National Monument, which starts on its eastern border. Much of the basin encompasses the Uintah and Ouray Reservation, home of the Ute tribe and more than half of the region’s oil wells. It’s also the habitat of a host of federally protected wildlife—endangered cacti and ancient fish, and the threatened greater sage grouse, a squat bird famous for its elaborate mating dance whose numbers have declined 40 percent since 2002 because of oil and gas drilling.

...

BLM expects the resulting new wells from this year’s auction to release nearly as many greenhouse gasses as 57,000 cars do in a year, an outcome that flies in the face of Biden’s climate pledge. Nonetheless, in an environmental assessment, the agency claims it has no choice but to approve the leases: “[C]ontinued oil and gas leasing is mandated by the Inflation Reduction Act for the expansion of renewable energy on Federal lands.”

“It’s a special kind of suicide to be continuing to use federal public lands to beget decades more of fossil fuel expansion at the same time we’re looking at the demise of the [Colorado] river just from the greenhouse emissions,” McKinnon says. The IRA, he notes, “basically holds renewable energy development hostage to oil and gas expansion.”

...

In the morning, we loaded up the boats and headed towards our final destination—a boat ramp in a place fittingly called Enron. As we got closer, the air became thicker with industrial fumes redolent of rotten eggs. “You don’t want to camp here,” Fulton noted. And then we saw the first of many water trucks whose drivers had set up pumps on the gravel and simply thrown a hose into the river. The trucks would deliver the river water to a well where it would be injected into the ground to force out the oil or gas, the process known as fracking. One well can require hundreds of water truck trips.

It’s a shockingly primitive system. Later, I asked the Utah Department of Natural Resources Division of Oil, Gas, and Mining how the state regulates the water pumped out of the river. A spokeswoman told me in an email that if I saw a truck withdrawing water from the river, it obviously had a permit, which seemed like a remarkably naive approach for a state in the midst of a two-decade-long megadrought. When I asked how much water oil and gas drilling used in the basin, the DNR spokeswoman sent me a YouTube video of the Utah Petroleum Association briefing the division.

In the video, Lauren Brown, vice president for environment and regulatory at XCL Resources, one of the biggest energy companies in the basin, said that a typical two-rig drilling operation on the company’s Utah acreage uses about 27 million barrels of water a year. That’s 850,000,000 gallons or enough to supply annual domestic water to more than 28,000 Americans. But XCL is only one company. The state couldn’t tell me how much water the oil and gas industry collectively uses in the basin.

“Water use reporting is all self-reported,” Andrew Dutson told me. He is the regional engineer for the Utah Division of Water Rights in Vernal, the largest town in the Uinta Basin. “The state doesn’t check it. It doesn’t have the ability to check.”

...

The water used in oil and gas drilling doesn’t get enough attention because it’s a relatively small amount compared with something like alfalfa farming, says Jon Holst, a wildlife and energy adviser at the Theodore Roosevelt Conservation Partnership who spent several years working for an energy company in the Uinta Basin. But Holst says that water used for agriculture at least gets recycled. That’s not the case with oil and gas production.

...
see the link for full details:

https://www.motherjones.com/environment/2023/07/uinta-basin-colorado-river-fracking-oil-gas/







https://www.motherjones.com/environment/2023/07/uinta-basin-colorado-river-fracking-oil-gas/
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kassy

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Re: Water wars
« Reply #168 on: August 07, 2023, 03:11:11 PM »
Study: Colorado River Basin lost 40 trillion liters to climate change

A study in the AGU journal Water Resources Research found that, from 2000 to 2021, climate change had caused the Colorado River Basin to lose more than 40 trillion gallons of water.


A new study finds that, from 2000 to 2021, climate change had caused the Colorado River Basin to lose more than 40 trillion liters (10 trillion gallons) of water — about equal to the entire storage capacity of Lake mead — according to a press release from the American Geophysical Union (AGU).

Without climate change, the drought in the basin most likely would not have reduced reservoir levels in 2021 to the point requiring supply cuts under the first-ever federally declared water shortage, according to the study, which was published in the AGU journal Water Resources Research, which publishes original research on the movement and management of Earth’s water.

“While we knew warming was having an impact on the Colorado Basin’s water availability, we were surprised to find how sensitive the basin is to warming compared to other major basins across the western U.S., and how high this sensitivity is in the relatively small area of the basin’s crucial snowpack regions,” said Benjamin Bass, a hydrologic modeler at the University of California-Los Angeles and lead author of the study. “The fact that warming removed as much water from the basin as the size of Lake Mead itself during the recent megadrought is a wakeup call to the climate change impacts we are living today.”

more:
https://www.waterworld.com/drinking-water/distribution/press-release/14297287/study-colorado-river-basin-lost-40-trillion-liters-to-climate-change
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neal

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Re: Water wars
« Reply #169 on: September 09, 2023, 12:07:00 AM »
China’s Dam Operations are Significantly Exacerbating Wet Season Drought.

A wet season drought is gripping the Mekong, but last week the operations of China’s two largest dams (Xiaowan and Nuozhadu) restricted more than 5 billion cubic meters of water, sending river gauges along the Thai-Lao border to all-time lows. The total amount of usable water in the 55 largest Mekong reservoirs is about 50 billion cubic meters, so those two dams restricted 10% of all usable water in a single week with little recognition to downstream needs. Rice production in Thailand is already suffering from extremely low river levels. Farther downstream, a lack of seasonal flooding is driving lower fish catches and poor agricultural outcomes for tens of millions of people who rely on the river’s natural resources. 

https://monitor.mekongwater.org/home/?v=_376766c8a9498a0e8a0c_1a499bd

kassy

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Re: Water wars
« Reply #170 on: September 23, 2023, 11:31:00 PM »
private edition:

A spanish farming family is getting fined for pumping out 40 million m3 of waters froma UNESCO heritage site from 2013-2018. 2million euro fine and 2 years without crops.

https://www.nu.nl/buitenland/6282227/spaanse-familie-tapt-40-miljoen-kuub-water-uit-park-en-krijgt-enorme-boete.html

NO ide why they could not shut it down in 2013or 2014or whatever.
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vox_mundi

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Re: Water wars
« Reply #171 on: September 25, 2023, 09:10:21 PM »
Thousands of California Wells At Risk of Drying Up Despite Landmark Water Law
https://phys.org/news/2023-09-thousands-california-wells-drying-landmark.html



Even though California enacted sweeping legislation nearly a decade ago to curb excessive agricultural pumping of groundwater, new research predicts that thousands of drinking water wells could run dry in the Central Valley by the time the law's restrictions take full effect in 2040.

The study, published this month in the journal Scientific Reports, casts critical light on how the state is implementing the 2014 Sustainable Groundwater Management Act. The research reveals that plans prepared by local agencies would allow for heavy pumping to continue largely unabated, potentially drawing down aquifers to low levels that would leave many residents with dry wells.

The researchers warned that unless local agencies adopt more stringent measures or come up with backup plans, many people in the Central Valley could be left without access to drinking water, and low-income communities could be severely affected.

Study authors reviewed 60 local groundwater plans throughout the Central Valley and examined a key metric called minimum thresholds—the aquifer levels groundwater agencies have set as lower limits while they implement the groundwater act's rules and restrictions over the next 16 years.

Groundwater level declines are consistent with business as usual extraction

They found that more than 5,000 domestic wells would be left completely dry, while an additional 4,000 household wells would be "partially dewatered," leading to problems such as low water pressure or damaged pumps.

In all, they said, more than 9,200 household wells and 1,000 public supply wells could fail if water levels are allowed to decline to the plans' minimum thresholds.

Bostic and her colleagues found that plans submitted by local agencies would allow major declines in groundwater between now and 2040. They said the thresholds allow for aquifer levels to decline, on average, 80 feet below 2019 levels , while some agencies set their thresholds more than 200 feet below current levels.

Such large drops would closely resemble "status-quo, business-as-usual" declines driven by unrestricted pumping, the researchers said. They urged state and local water officials to strengthen protections for drinking water wells and take steps to mitigate the effects.

Overall, researchers estimated that 32% of the 29,567 domestic wells analyzed are at risk under the plans that agencies submitted, as well as 21% of the 5,259 wells that supply public water systems—a burden that's likely to fall disproportionately on rural disadvantaged communities.

The findings add to a body of research that has identified failings and weaknesses in implementation of the Sustainable Groundwater Management Act.

... If the plans aren't strengthened, Méndez-Barrientos said, they will in effect establish "sacrifice zones" where many people will be left to struggle with dry wells and find other sources of drinking water.

... They also found 91% of ecosystems that depend on groundwater in regulated areas aren't protected from going dry.



Darcy Bostic et al, Thousands of domestic and public supply wells face failure despite groundwater sustainability reform in California's Central Valley, Scientific Reports (2023)
https://www.nature.com/articles/s41598-023-41379-9
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― anonymous

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

morganism

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Re: Water wars
« Reply #172 on: September 29, 2023, 09:41:12 PM »
How powerful land barons shaped the epic floods in California’s heartland

(...)
At the end of the contentious hearing, Kings County supervisors took an action never before taken in county history. They voted to cut a levee on farmland owned by Boswell to buy time for Corcoran, home to 20,000 people and one of California’s largest maximum security prisons, as the town scrambled to raise earthen defenses against the encroaching floodwaters.

The decision was met with incredulity and fury by the powerhouse farming company.

“Boswell has been farming in the Corcoran area since 1925. Ninety-eight years,” George Wurzel, Boswell’s president and chief operating officer, told the supervisors. “And in 98 years, the county supervisors have never gotten involved in telling us where to put floodwater.”

In most parts of California, and indeed the United States, the idea that the government would largely cede to private companies management of a natural disaster that could decimate multiple towns, displace thousands of farmworkers and wreak destruction across hundreds of square miles would be unfathomable.

But that has long been how things operate in the Tulare Lake Basin. Land barons, chief among them J.G. Boswell’s founder, seized control of the basin and its water generations ago and have since managed it with minimal government interference.

In recent months, a team from The Times interviewed dozens of farmers, residents, government officials and policy experts; reviewed property records, court filings, water district records and historical documents; and spent hours driving around and flying over the lakebed.

The picture that emerged is one of a region that operates more like a secretive fiefdom ruled by a handful of legacy farming clans than a publicly governed jurisdiction where decisions affecting the well-being of residents are made on a foundation of transparency and accountability.

Among The Times’ findings:

The flood-prone Tulare Lake Basin is the one part of the Central Valley that has a special exemption from state-required flood control plans, leaving the area without a clear public strategy for managing floodwaters. State and federal flood maps offer scant information about the location or condition of the hundreds of miles of levees and canals in the basin — which spans portions of Kings and Tulare counties — because no one has ever reported it in detail.

And because the landscape is constantly in flux — as levees, berms and ditches are built, cut and rerouted as private landowners see fit — residents, lawmakers and water managers were unable to plan for and mitigate the damage as the floodwaters poured in.

The situation has been compounded by the unrestrained pumping of groundwater in recent decades. This is causing large swaths of the valley floor to sink, further changing the path water takes in the basin.

Local flood control and water conveyance districts, made up of powerful farming interests, make decisions about water infrastructure. Some refer to themselves as government entities; others receive tax-exempt status to store, divert and channel water.

Even the governor appeared flummoxed when he visited in April.

“It’s complicated,” Gov. Gavin Newsom said as he stood beside the newly formed Tulare Lake near Corcoran. He had come down after local officials begged the state for money to build up the Corcoran levee, a 14-mile-long earthen wall that protects the town and prison when water rises in the lake bottom.

But the region’s lawmakers had opted out of so many state programs, and officials had such scarce information about the region’s water dynamics, that figuring out how to provide aid was complicated. State officials, Newsom said, were trying to assess “exactly the rules of engagement.”

Six months later, they’re still trying to figure it out.

“I would observe that we have some big local landowners that say, ‘See, we managed this, and it went fine this year,’” said Karla Nemeth, director of California’s Department of Water Resources. “But there’s also a lot of folks in that region that came away from the spring saying, ‘We don’t understand what happened. We don’t understand who was making decisions, and we don’t understand what the plan is.”

This year, Corcoran and other towns in the Tulare Lake Basin were largely spared, in part because of decisions made by landowners and state and local officials — and in part just by pure luck as record snowpack in the southern Sierra Nevada melted more slowly than expected. But in the years to come, the potential for more record precipitation and drought — volatile weather swings unleashed by the changing climate — is likely to stress the system in ways that will make this past year seem benign.

While whole towns were not destroyed, this year’s flooding left clear winners and losers. The revived Tulare Lake could put some farmland and orchards out of circulation for years. The economic devastation is projected at roughly $1 billion.

“Are we going to be bankrupt? Are we going to be in business? I don’t know,“ said farmer Makram Hanna, whose pistachio orchard was flooded by a broken levee, leaving hundreds of acres of trees suffocating under 2 feet of water.

The episode has fractured some longtime relations in this lucrative corner of the San Joaquin Valley, and left troubling questions about the wet winters and dry summers to come: When water is overwhelming — or desperately scarce — who will suffer and who will thrive? And who gets to decide?

(more)

https://www.latimes.com/environment/story/2023-09-28/central-valley-land-barons-tulare-lake-basin-kings-county-flooding-water-farms-boswell

sidd

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Re: Water wars
« Reply #173 on: November 10, 2023, 08:04:33 PM »
Wilson et al. at propublica: prior perfected rights

"20 extended families who receive fully one-seventh of the river’s flow through its lower half — a whopping 1,186,200 acre-feet, or about 386.5 billion gallons"

" the historic claims of these families and all of Imperial County place them first in line — ahead of every state and major city — for whatever water remains."

“You’ve got this small group of families, and … they’ve all intermarried, and it’s almost like a feudal-type system, where we’re combining our little kingdoms,”

https://www.propublica.org/article/california-farm-families-gained-control-colorado-river

sidd

vox_mundi

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Re: Water wars
« Reply #174 on: November 10, 2023, 08:27:12 PM »
Sounds like a remake of Chinatown (1974)

https://en.wikipedia.org/wiki/Chinatown_(1974_film)#Plot
“There are three classes of people: those who see. Those who see when they are shown. Those who do not see.” ― anonymous

Insensible before the wave so soon released by callous fate. Affected most, they understand the least, and understanding, when it comes, invariably arrives too late

sidd

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Re: Water wars
« Reply #175 on: November 11, 2023, 09:41:53 AM »
"Forget it, Jake, it's Chinatown."

sidd

morganism

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Re: Water wars
« Reply #176 on: January 16, 2024, 09:52:00 PM »
Murder, drought and peyote: the deadly struggle for Mexico’s water

Latin America’s water wars: How the twin menaces of mining and agribusiness threaten a sacred way of life
(...)
“From here, you can hear their anti-hail rockets [shot into the sky to scatter storm clouds and prevent hailstones from damaging crops] and their agricultural planes, and you can see that the sky is tense as if it is going to rain. Then, after the planes pass, nothing falls,” says Erica’s mother, Mari, 58, describing the “anti-hail” technologies being wielded by the farms. The hail rockets, which research suggests may not even be effective, are blamed by many for disrupting rain as well as hail and causing drought.

But what worries the Villanueva family most is that the aquifers will eventually dry up. The irrigation of tomato crops in San Luis Potosí requires more than 4m cubic metres of water a year. Tomato growers have resorted to drilling new wells in the desert to irrigate their crops.
(more)

https://www.theguardian.com/global-development/2024/jan/16/drought-and-peyote-the-deadly-struggle-for-mexicos-water

morganism

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Re: Water wars
« Reply #177 on: March 29, 2024, 09:32:14 PM »
Hay grown for cattle consumes nearly half the water drawn from Colorado River, study finds

With chronic water shortages afflicting the Colorado River, discussions about how to cut usage have increasingly focused on a thirsty crop that consumes an especially large share of the river’s water: hay that is grown to feed cattle and produce beef and dairy products.

In a new study, researchers found that alfalfa and other cattle-feed crops consume 46% of the water that is diverted from the river, accounting for nearly two-thirds of agricultural water use. The research also shows that agriculture is the dominant user of Colorado River water, accounting for 74% of the water that is diverted — about three times the combined usage of all the cities that depend on the river.

The study presents the most detailed analysis of its kind to date, including extensive data on where the river’s water goes across seven Western states and northern Mexico. The research sheds new light on how the river’s water is used at a time when representatives of the federal government, states and tribes are seeking long-term solutions to reduce water use and adapt to climate change.
(snip)
The researchers analyzed all water diversions for agriculture, communities and industries from 2000 to 2019, and calculated annual averages. They also included estimates of how much water evaporates from the river’s reservoirs, and the uptake of water by vegetation in wetlands and riparian areas along the river. Together, those account for 30% of overall consumption.

(more)

https://www.latimes.com/environment/story/2024-03-28/alfalfa-hay-beef-water-colorado-river


New water accounting reveals why the Colorado River no longer reaches the sea

Persistent overuse of water supplies from the Colorado River during recent decades has substantially depleted large storage reservoirs and triggered mandatory cutbacks in water use. The river holds critical importance to more than 40 million people and more than two million hectares of cropland. Therefore, a full accounting of where the river’s water goes en route to its delta is necessary. Detailed knowledge of how and where the river’s water is used can aid design of strategies and plans for bringing water use into balance with available supplies. Here we apply authoritative primary data sources and modeled crop and riparian/wetland evapotranspiration estimates to compile a water budget based on average consumptive water use during 2000–2019. Overall water consumption includes both direct human uses in the municipal, commercial, industrial, and agricultural sectors, as well as indirect water losses to reservoir evaporation and water consumed through riparian/wetland evapotranspiration. Irrigated agriculture is responsible for 74% of direct human uses and 52% of overall water consumption. Water consumed for agriculture amounts to three times all other direct uses combined. Cattle feed crops including alfalfa and other grass hays account for 46% of all direct water consumption.

https://www.nature.com/articles/s43247-024-01291-0

kassy

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