The Water Levels Of The Middle East’s Biggest Lake Have Dropped 95 Percent In Two Decades

According to the local environmental office in Iran, only five percent of the water remains in the biggest lake in the Middle East.

Lake Urmia sits in the far northwest corner of Iran, and was once the sixth largest saltwater lake in the world — slightly bigger than Utah’s Great Salt Lake. It’s relatively shallow, so the water drop has exposed huge tracts of land. Hamid Ranaghadr, an Iranian environmental official, told the New York Times that areas of the lake that were once under 30 feet of water are now dry and dusty lake beds. “We just emptied it out,” he said.

Being saltwater, Lake Urmia was never fit for drinking water or agriculture. But its collapse is indicative of the way climate change and poor water management has driven Iran into a potentially catastrophic water shortage. Dam construction recently increased throughout the country, both to provide badly needed electricity and water supplies for irrigation. But that’s also diverted massive amounts of the freshwater that formerly flowed into Lake Urmia. Other major rivers throughout the country have gone dry, and the dust from the riverbeds and the salt from Lake Urmia’s dried basin are now a form of pollution unto themselves. (Four of the world’s ten most polluted cities can be found in Iran.) Major cities around the country — including the capital of Tehran, home to 22 million — are making contingency plans for rationing. Iranian President Hassan Rouhani recently named water as a national security issue, and demonstrations and riots over water supplies have already erupted.

The collapse began in the mid-1990s. One local villager told the Times that he noticed the shoreline receding two decades ago, and now it’s no longer visible from his community. According to a 2012 study by the United Nations, 65 percent of the decline can be chalked up to climate change and the diversion of surface water cutting inflow to the lake. Another 25 percent was due to dams, and 10 percent was due to decreased rainfall over the lake itself.

A long drought in Iran ended two years ago, but the recent boost to rainfall has not been able to offset the other effects on the lake. Average temperatures around Lake Urmia rose three degrees in just the past ten years. In Pakistan, which sits along Iran’s southeast border, has seen its snowmelt and river flow reduced by climate change. That’s led to both political strife domestically, and to a strained relationship with India, which is building dams along the Indus River — Pakistan’s main source of freshwater. And research from the the Potsdam Institute for Climate Impact Research in Germany found water resources in northwest Iran could drop 50 percent should global warming increase by just 2°C.

The world is currently on track to blow past 2°C by the end of the century.

After the water is diverted away, a lot of it is used recklessly. Ranaghadr and other experts point to inefficient irrigation techniques such as spraying, which allows most of the water to evaporate uselessly from the fields. His department calculated that around 90 percent of the water that should flow into Lake Urmia is sprayed instead, and President Rouhani has estimated that Iran’s uses 92 percent of its water for agriculture, versus 80 percent in the United States.

“They turn open the tap, flood the land, without understanding that in our climate most of the water evaporates that way,” Ali Reza Seyed Ghoreishi, a member of the local water management council, told the Times. “We need to educate the farmers.”

The Iranian government also attempted to promote agriculture by breaking large landholdings into smaller properties. Most of the new owners promptly dug new wells to supply their crops, draining the groundwater. “There are around 30,000 legally dug wells and an equal amount of illegal wells,” said Seyed Ghoreishi. “As the water is becoming less, they have to dig deeper and deeper.”

Efficient water management generally requires either a working market where prices keep supply and demand tethered, or well-developed public institutions to manage the supply. Unfortunately, the developing world often has neither. A coalition of groups over the United Nations tried to quantify, in dollar terms, water use around the globe in April of 2013. They found West Asia, where Iran can found,was the third-most costly regional user of water in the world, right behind East Asia and North Africa.

Thanks to budget choices and international sanctions, Iran has not made any money available to restoration efforts for Lake Urmia. Iranian officials told the Times the lake is, at this point, probably unsalvageable.

 

Ancient aqueducts [karez] give Iraq a trickle of hope

A millennia-old labyrinth of underground canals may help solve the Middle East's water crisis, say experts.

The ancient karez in Kunaflusa

In the windswept plateaus of northern Iraq, unseen aqueducts which have channelled water to arid settlements for centuries are running dry. Experts say the wide-scale demise of these ancient water systems is an ominous sign of how scarce water in the region will soon become, and the humanitarian disasters that could follow.

For villagers here, tragic consequences have already arrived.

Farez Abdulrahman Ali strides across a muddy field and sweeps a burly arm towards the mountains that loom over Shekh Mamudian village in the wilds of Iraq’s semi-autonomous Kurdistan region. This is the rugged terrain of the peshmerga, the Kurdish military whose name means "those who face death".

Ali explains that a subterranean canal - known in Iraq as a karez - once brought water to the village, where it gushed from a rock-lined tunnel into a pool just below the entrance to the local mosque. From there, it was channelled to nearby fields of okra, eggplant, onion and tobacco.

"Farmers would use the water," said Ali. "On hot days, children would play in the water. In the evenings, people would gather at the karez to talk about village things."

"The karez dates back to the time when karez were dug," he added, matter-of-factly. "Nobody in the village knows when it was dug. Even my grandfather doesn't know. It is probably 800 or 900 or 1,000 years old."

"There is now not enough water for farming. If the karez runs dry,

we will be forced to leave the village." - Fadel Salah, Kunaflusa villager

Dry county

In autumn 2011, for the first time in the village's collective memory, the karez in Shekh Mamudian went dry. As the village chief, or mukhtar, Ali sees the loss of the karez as catastrophic for the livestock and crops the village depends on for its hard won self-sufficiency. Unless it is restored, he fears for the end of a community that withstood assaults by Saddam Hussein’s army in the 1980s, and survived as a bloody no-man's land in the Kurdish civil war of the mid-1990s.

"The karez was the source of life," Ali said. "The village now feels like a family that has lost its father."

Echoes of Ali’s lament are being heard throughout the arid mountains and plains of Kurdistan, where the widespread demise of karez is becoming a humanitarian nightmare.

Last year, an inventory of karez systems in Kurdistan - believed to be the first such compiled in modern times - found that decades of war and years of grinding drought, combined with neglect and over-pumping from nearby mechanised wells, had brought these vital water lifelines to the edge of extinction.

According to a UNESCO report, just 116 of the 683 karez networks located in northern Iraq were still supplying water as of August 2009. As many as 40 per cent of the region's karez have dried up in the past four years alone.

Since 2005, more than 100,000 people have been forced to abandon their homes because their karez stopped flowing, and a further 36,000 are at immediate risk of evacuating their villages, according to the UN agency.

Parched land

In Kunaflusa, a rocky 90-minute drive north of Erbil, the village karez was last year producing only a trickle. Village mukhtar Fadel Abdullah Salah said families were allotted one-hour time slots to fill up enough water jugs to last a week.

"There is not enough water now for farming," said Salah. "If the karez runs dry, we will be forced to leave the village."

Water brought in tanker trucks by the Kurdistan Regional Government has helped the people of Kunaflusa. But experts say quick fixes such as hauling in water or drilling new, gas-fuelled wells are expensive band-aids that will ultimately prove unsustainable.

Salah said the village had some 200 houses in 1984, but today only 13 remain occupied. The UN report found that, on average, 70 per cent of residents moved away from their villages after the local karez went dry. More

 

Freshwater Stores Shrink in Tigris-Euphrates Basin

Scientists using the twin gravity-measuring satellites of the Gravity Recovery and Climate Experiment (GRACE) have found that a large portion of the Middle East lost freshwater reserves rapidly during the past decade. The research team observed the Tigris and Euphrates river basins—including parts of Turkey, Syria, Iraq, and Iran—and found that 117 million acre feet (144 cubic kilometers) of fresh water was lost from 2003 to 2009. That amount is roughly equivalent to the volume of the Dead Sea. About 60 percent of the loss was attributed to the pumping of groundwater from underground reservoirs.

The two natural-color images above were acquired by the Landsat 5 satellite and show the shrinking of the Qadisiyah Reservoir in Iraq between September 7, 2006 and September 15, 2009. The first graph shows the elevation of the water in that reservoir between January 2003 and December 2009. The elevation is a proxy measurement for the total volume of water stored there; labels show the water elevation at the time of the satellite images.

The second graph shows the water storage for the entire study area as measured by GRACE from January 2003 to December 2009. The gray line depicts total water storage in the region—groundwater, surface water bodies, and soil moisture—while the green line depicts changes in surface water. The difference between those two lines reflects the change in water stored in underground aquifers (ground water). The total water storage shows a seasonal fluctuation, but also an overall downward trend, suggesting that groundwater is being pumped and used faster than natural processes can replenish it.

“GRACE data show an alarming rate of decrease in total water storage in the Tigris and Euphrates river basins, which currently have the second fastest rate of groundwater storage loss on Earth, after India,” said Jay Famiglietti, principal investigator of the study. “The rate was especially striking after the 2007 drought. Meanwhile, demand for freshwater continues to rise, and the region does not coordinate its water management because of different interpretations of international laws.”

Obtaining ground-based data in Middle East can be difficult, so data from satellites such as GRACE are essential to providing a global picture of water storage trends. Within any given region on Earth, rising or falling water reserves alter the planet’s mass, influencing the gravity field of the area. By periodically measuring gravity in each region, the GRACE satellites tells us how water storage changes over time. (To learn more about GRACE’s ability to study fresh water on Earth, read The Gravity of Water.)

The researchers calculated that about one-fifth of the water losses in their Tigris-Euphrates study region came from snowpack shrinking and soil drying up, partly in response to a 2007 drought. Loss of surface water from lakes and reservoirs accounted for another fifth of the losses. The majority of the loss—approximately 73 million acre feet (90 cubic kilometers)—was due to reductions in groundwater. “That's enough water to meet the needs of tens of millions to more than a hundred million people in the region each year, depending on regional water-use standards and availability,” Famiglietti said. More

 

 

Saudi Arabia & Iran Are Overexploiting Their Groundwater Supplies

In the Middle East, water shortages are a widely accepted reality which many countries are trying to fight head on. Worldwide, however, the issue is not so pressing with environmental issues such as energy and emissions taking centre stage. Despite this, new research from McGill University in Montreal and Utrecht University in the Netherlands indicates that the world is increasingly dependent on an unsustainable supply of groundwater. They estimate that the world’s ‘water footprint’, which is defined as the area above ground required to sustain groundwater use, is about 3.5 times the actual area of the available aquifers. And this has huge implications not only on water supplies but for food and political security too.

Combining data from around the world, the research team has been able to measure the amount of water available and the water usage. The result which Tom Gleeson from McGill called ‘sobering’ indicate global overexploitation of groundwater in a number of regions across Asia and North America. The study suggests that around 1.7 billion people – mostly in Asia – are living in areas where underground water reserves are under threat. That means that we humans as well as the vast ecosystems that water supports, are blindly walking into crisis.

The areas that the research showed were under most stress include Saudi Arabia, Iran, northern India and parts of northern China. In the US, the areas included western Mexico, the High Plains and California’s Central Valley. The overexploitation of groundwater supplies in countries such as China, the US and India is linked to their global scale production of food.

“The relatively few aquifers that are being heavily exploited are unfortunately critical to agriculture in a number of different countries,” Tom Gleeson told Reuters. “So even though the number is relatively small, these are critical resources that need better management.”

The study found that Saudi Arabia had substantially depleted its own aquifers (as has Iran), which is why the country is buying up land in Africa to help ensure food security. However, it is not all bad news. According to the data gathered, groundwater depletion isn’t a worldwide problem and 80 percent of aquifers around the world aren’t being depleted. For example, some of the largest reserves of groundwater are under North African countries like Libya, Algeria, Egypt and Sudan and these haven’t been over-exploited yet.

The biggest scheme to get to this water was Libya’s $25 billion Great Manmade River project, built by the dictator Muammar Gaddafi to supply cities including Tripoli, Benghazi and Sirte with an estimated 6.5 million cubic meters of water a day. The problem is that once this water is taken out of these aquifers, it is not replenished and so the need to control our consumption of water is still a pressing issue.

Authors of the study suggest that limits on water extraction, more efficient irrigation and the promotion of diets with less meat (or no meat at all) could make water resources more sustainable. More