Water Resources Fact Sheet - Earth Policy Institute

JULY 30, 2014 Water scarcity may be the most underrated resource issue the world is facing today.

Seventy percent of world fresh water use is for irrigation.

Each day we drink nearly 4 liters of water, but it takes some 2,000 liters of water—500 times as much—to produce the food we consume.

1,000 tons of water is used to produce 1 ton of grain.

Between 1950 and 2000, the world’s irrigated area tripled to roughly 700 million acres. After several decades of rapid increase, however, the growth has slowed dramatically, expanding only 9 percent from 2000 to 2009. Given that governments are much more likely to report increases than decreases, the recent net growth may be even smaller.

The dramatic loss of momentum in irrigation expansion coupled with the depletion of underground water resources suggests that peak water may now be on our doorstep.

Today some 18 countries, containing half the world’s people, are overpumping their aquifers. Among these are the big three grain producers—China, India, and the United States.

Saudi Arabia is the first country to publicly predict how aquifer depletion will reduce its grain harvest. It will soon be totally dependent on imports from the world market or overseas farming projects for its grain.

While falling water tables are largely hidden, rivers that run dry or are reduced to a trickle before reaching the sea are highly visible. Among this group that has limited outflow during at least part of the year are the Colorado, the major river in the southwestern United States; the Yellow, the largest river in northern China; the Nile, the lifeline of Egypt; the Indus, which supplies most of Pakistan’s irrigation water; and the Ganges in India’s densely populated Gangetic basin.

Many smaller rivers and lakes have disappeared entirely as water demands have increased.

Overseas "land grabs" for farming are also water grabs. Among the prime targets for overseas land acquisitions are Ethiopia and the Sudans, which together occupy three-fourths of the Nile River Basin, adding to the competition with Egypt for the river’s water.

It is often said that future wars will more likely be fought over water than oil, but in reality the competition for water is taking place in world grain markets. The countries that are financially the strongest, not necessarily those that are militarily the strongest, will fare best in this competition.

Climate change is hydrological change. Higher global average temperatures will mean more droughts in some areas, more flooding in others, and less predictability overall.

Data and additional resources available at www.earth-policy.org

Research Contact: Janet Larsen (202) 496-9290 ex. 14 or jlarsen (at) earth-policy.org

Water Resources Fact Sheet JULY 30, 2014 Water scarcity may be the most underrated resource issue the world is facing today. Seventy percent of world fresh water use is for irrigation. Each day we drink nearly 4 liters of water, but it takes some 2,000 liters of water—500 times as much—to produce the food we consume. 1,000 tons of water is used to produce 1 ton of grain. Between 1950 and 2000, the world’s irrigated area tripled to roughly 700 million acres. After several decades of rapid increase, however, the growth has slowed dramatically, expanding only 9 percent from 2000 to 2009. Given that governments are much more likely to report increases than decreases, the recent net growth may be even smaller. The dramatic loss of momentum in irrigation expansion coupled with the depletion of underground water resources suggests that peak water may now be on our doorstep. Today some 18 countries, containing half the world’s people, are overpumping their aquifers. Among these are the big three grain producers—China, India, and the United States. Saudi Arabia is the first country to publicly predict how aquifer depletion will reduce its grain harvest. It will soon be totally dependent on imports from the world market or overseas farming projects for its grain. While falling water tables are largely hidden, rivers that run dry or are reduced to a trickle before reaching the sea are highly visible. Among this group that has limited outflow during at least part of the year are the Colorado, the major river in the southwestern United States; the Yellow, the largest river in northern China; the Nile, the lifeline of Egypt; the Indus, which supplies most of Pakistan’s irrigation water; and the Ganges in India’s densely populated Gangetic basin. Many smaller rivers and lakes have disappeared entirely as water demands have increased. Overseas "land grabs" for farming are also water grabs. Among the prime targets for overseas land acquisitions are Ethiopia and the Sudans, which together occupy three-fourths of the Nile River Basin, adding to the competition with Egypt for the river’s water. It is often said that future wars will more likely be fought over water than oil, but in reality the competition for water is taking place in world grain markets. The countries that are financially the strongest, not necessarily those that are militarily the strongest, will fare best in this competition. Climate change is hydrological change. Higher global average temperatures will mean more droughts in some areas, more flooding in others, and less predictability overall. (PDF version) Data and additional resources available at www.earth-policy.org Research Contact: Janet Larsen (202) 496-9290 ex. 14 or jlarsen (at) earth-policy.org

 

 

© 2014

Enormous groundwater usage in western U.S.

NASA’s GRACE satellites have produced a spectacular database that can be used to look beneath the Earth’s surface. Launched in 2002, these satellites measure Earth’s gravity field at high precision, allowing small changes in where mass is distributed in the Earth’s crust to be discovered.

NASA's GRACE Satellite

One of the big ways this happens is through groundwater pumping. When groundwater is pumped to the surface and used, it either evaporates or runs off towards the ocean, removing mass from an area. GRACE therefore gives scientists the ability to monitor how groundwater has been used over the last decade.

A key area for groundwater usage is in the Western U.S. That area has, on average, had its driest 10 years out of the last century, leading to huge drawdowns in water in Lake Mead and Lake Powell, the reservoirs on the Colorado River.

But that isn’t the only water source being used up. Using data from GRACE, scientists led by Dr. Stephanie Castle at UC Irvine were able to calculate how much water has been extracted from the ground in the area over the past 10 years.

Their result is staggering. Since 2004, the groundwater depletion in the Colorado River basin is the equivalent of twice the volume of Lake Mead.

Let’s say that again. Groundwater is a finite resource and in the past decade alone, areas like Arizona, Colorado, California, New Mexico, and Nevada have pumped out and used 2 Lake Meads worth of water from the ground.

This dataset doesn’t tell how much water is there in the ground to be used, but that volume is staggering. There has been a lot of focus, from us included, on the management of water levels in Lake Mead and its potential impacts on the area. To think that groundwater pumping in the region is using up two of those every 10 years means the region is relying far more on a finite resource than almost anyone would have guessed. At those usage rates, if groundwater supplies began to dry up, replacing that water would use up the entire Lake Mead reservoir in 5 years.

Image credit: US Department of Agriculture

https://www.flickr.com/photos/usdagov/9682283892

Original paper:

http://onlinelibrary.wiley.com/doi/10.1002/2014GL061055/abstract

Read more:

http://news.agu.org/press-release/satellite-study-reveals-parched-u-s-west-using-up-underground-water/

 

© 2014

Distributed Water Balance of the Nile Basin [HD]

Water is the new oil. This means that it will become, if it has not already done so, become a trigger for conflict.

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This visualization shows how satellite data and NASA models are being applied to study the hydrology of the Nile basin. The Tropical Rainfall Measurement Mission (TRMM) Multisensor Precipitation Analysis fTMPA) provides three-hourly estimates of rainfall rate across much of the globe.

Here we see the seasonal cycle of monthly precipitation derived from TMPA for Africa, including the Nile Basin. The annual migration of the Intertropical Convergence Zone (ITCZ) from the Nile Equatorial Lakes region around Lake Victoria, source of the White Nile, northward into Sudan and the highlands of Ethiopia, headwaters of the Blue Nile, and back is evident in the seasonal cycle in precipitation. This precipitation cycle drives flow through the Nile River system. The Nile basin, however, is intensely evaporative, and the majority of the water that falls as rain leaves the basin as evaporation rather than river flow—either from the humid headwaters regions or from large resen/oirs and irrigation developments in Egypt and Sudan.

The Atmosphere Land Exchange Inverse (ALEXI) evapotranspiration product, developed by USDA scientists, uses satellite data to map daily evapotranspiration across the entire Nile basin, providing unprecedented information on water consumption. The balance of rainfall and evapotranspi ration can be seen in seasonal patterns of soil moisture, as simulated by the NASA Nile Land Data Assimilation System (LDAS), which merges satellite information with a physically-based land surface model to simulate variability in soil moisture—a critical variable for rainfed agriculture and natural ecosystems. Finally, the twin satellites of the Gravity Recovery and Climate Experiment (GRACE) can be used to monitor variability in total water storage, including surface water, soil moisture, and groundwater. The annual cycle in GRACE estimates of water storage anomalies clearly shows the seasonal movement of water storage due to precipitation patterns and the movement of surface waters from headwaters regions into the wetlands of South Sudan and the resen/oirs of the lower Nile basin.

The Nile is the longest river in the world and its basin is shared by 11 countries. Reliable, spatially distributed estimates of hydrologic storage and fluxes can provide critical information for water managers contending with multiple resource demands, a variable and changing climate, and the risk of damaging floods and droughts. NASA observations and modeling systems offer unique capabilities to meet these information needs.

Completed: 7 May 2013

Animator: Trent L. Schindler (USRA) (Lead)

Producer: Jefferson Beck (USRA)

Scientists: David Toll (NASA/GSFC)

Ben Zaitchik (Johns Hopkins University)

 

© 2014

India and Pakistan at Odds Over Shrinking Indus River

Nearly 30 percent of the world's cotton supply comes from India and Pakistan, much of that from the Indus River Valley. On average, about 737 billion gallons are withdrawn from the Indus River annually to grow cotton—enough to provide Delhi residents with household water for more than two years. (See a map of the region.)

Baseera Pakistan Aug 2010

"Pakistan's entire economy is driven by the textile industry," said Michael Kugelman, a South Asia expert at the Woodrow Wilson International Center for Scholars. "The problem with Pakistan's economy is that most of the major industries use a ton of water—textiles, sugar, wheat—and there's a tremendous amount of water that's not only used, but wasted," he added.

The same is true for India.

That impact is an important part of a complex water equation in countries already under strain from booming populations. More people means more demand for water to irrigate crops, cool machinery, and power cities. The Indus River, which begins in Indian-controlled Kashmir and flows through Pakistan on its way to the sea, is Pakistan's primary freshwater source—on which 90 percent of its agriculture depends—and a critical outlet of hydropower generation for both countries.

(Related: "See the Global Water Footprint of Key Crops")

Downstream provinces are already feeling the strain, with some dried-out areas being abandoned by fishermen and farmers forced to move to cities. That increases competition between urban and rural communities for water. "In areas where you used to have raging rivers, you have, essentially, streams or even puddles and not much else," said Kugelman.

In years past, the coastal districts that lost their shares of the Indus' flows have become "economically orphaned," the poorest districts in the country, according to Pakistani water activist Mustafa Talpur. Because Pakistani civil society is weak, he says, corruption and deteriorating water distribution tend to go hand in hand.

In the port city of Karachi, which depends for its water on the Indus, water theft—in which public water is stolen from the pipes and sold from tankers in slums and around the city—may be a $500-million annual industry.

In the balance is the fate not only of people, but important aquatic species like the Indus River dolphin, which is now threatened to extinction by agricultural pollution and dams, among other pressures. Scientists estimate that fewer than 100 individuals remain.

Threat to Peace?

One of the potentially catastrophic consequences of the region's fragile water balance is the effect on political tensions.

In India, competition for water has a history of provoking conflict between communities. In Pakistan, water shortages have triggered food and energy crises that ignited riots and protests in some cities. Most troubling, Islamabad's diversions of water to upstream communities with ties to the government are inflaming sectarian loyalties and stoking unrest in the lower downstream region of Sindh.

But the issue also threatens the fragile peace that holds between the nations of India and Pakistan, two nuclear-armed rivals. Water has long been seen as a core strategic interest in the dispute over the Kashmir region, home to the Indus' headwaters. Since 1960, a delicate political accord called the Indus Waters Treaty has governed the sharing of the river's resources. But dwindling river flows will be harder to share as the populations in both countries grow and the per-capita water supply plummets.

Some growth models predict that by 2025, India's population will grow to triple what it was—and Pakistan's population to six times what it was—when the Indus treaty was signed. Lurking in the background are fears that climate change is speeding up the melting of the glaciers that feed the river.

Mountain glaciers in Kashmir play a central role in regulating the river's flows, acting as a natural water storage tank that freezes precipitation in winter and releases it as meltwater in the summer. The Indus is dependent on glacial melting for as much as half of its flow. So its fate is uniquely tied to the health of the Himalayas. In the short term, higher glacial melt is expected to bring more intense flooding, like last year's devastating deluge.

Both countries are also racing to complete large hydroelectric dams along their respective stretches of the Kashmir river system, elevating tensions. India's projects are of a size and scope that many Pakistanis fear could be used to disrupt their hydropower efforts, as well as the timing of the flows on which Pakistani crops rely.

(Related: "Seven Simple Ways to Save Water")

"Many in Pakistan are worried that, being in control of upstream waters, India can easily run Pakistan dry either by diverting the flow of water by building storage dams or using up all the water through hydroelectric power schemes," said Pakistani security analyst Rifaat Hussain.

For years, Pakistani politicians have claimed India is responsible for Pakistan's water troubles. More recently, militant groups have picked up their rhetoric. Hafiz Saeed, the founder of the Pakistani militant group allegedly responsible for the 2008 terror attack in Mumbai, even accused India of "water terrorism."

Hope for the Future

In the past few months, however, the situation has improved, according to Kugelman. "We've been hearing nearly unprecedented statements from very high-level Pakistani officials who have essentially acknowledged that India is not stealing Pakistan's water, and that Pakistan's water problems are essentially a function of internal mismanagement issues," he said. Militants are still griping, he said, "but not as shrilly."

This may be because the two countries are cooperating on water and other issues better than before, and because militants are now focusing less on their archenemy in India and more on coalition forces in Afghanistan.

"But I imagine this is momentary," said Kugelman. "The facts on the ground—the water constraints in both India and Pakistan—have not abated. They're both still very serious and getting worse."

What's needed, he says, is more conservation and adaptation—a smarter way of doing business. More

This Article is part the National Geographic Society’s freshwater initiative and is a multiyear global effort to inspire and empower individuals and communities to conserve freshwater and preserve the extraordinary diversity of life that rivers, lakes, and wetlands sustain.

 

© 2014

The Unity of Water

MOSCOW – In May, Vietnam became the 35th and decisive signatory of the 1997 United Nations Convention on the Law of the Non-Navigational Uses of International Watercourses. As a result, 90 days later, on August 17, the convention will enter into force.

The fact that it took almost 50 years to draft and finally achieve the necessary ratification threshold demonstrates that something is very wrong with the modern system of multilateralism. Regardless of longstanding disagreements over how cross-border freshwater resources should be allocated and managed, and understandable preferences by governments and water professionals to rely on basin agreements rather than on international legal instruments, that half-century wait can be explained only by a lack of political leadership. So, though the world may celebrate the convention’s long-awaited adoption, we cannot rest on our laurels.

Roughly 60% of all freshwater runs within cross-border basins; only an estimated 40% of those basins, however, are governed by some sort of basin agreement. In an increasingly water-stressed world, shared water resources are becoming an instrument of power, fostering competition within and between countries. The struggle for water is heightening political tensions and exacerbating impacts on ecosystems.

But the really bad news is that water consumption is growing faster than population – indeed, in the twentieth century it grew at twice the rate. As a result, several UN agencies forecast that, by 2025, 1.8 billion people will be living in regions stricken with absolute water scarcity, implying a lack of access to adequate quantities for human and environmental uses. Moreover, two-thirds of the world’s population will face water-stress conditions, meaning a scarcity of renewable freshwater.

Without resolute counter-measures, demand for water will overstretch many societies’ adaptive capacities. This could result in massive migration, economic stagnation, destabilization, and violence, posing a new threat to national and international security.

The UN Watercourses Convention must not become just another ignored international agreement, filed away in a drawer. The stakes are too high. In today’s context of climate change, rising demand, population growth, increasing pollution, and overexploited resources, everything must be done to consolidate the legal framework for managing the world’s watersheds. Our environmental security, economic development, and political stability directly depend on it.

The convention will soon apply to all of the cross-border rivers of its signatories’ territories, not just the biggest basins. It will complement the gaps and shortcomings of existing agreements and provide legal coverage to the numerous cross-border rivers that are under increasing pressure.

Worldwide, there are 276 cross-border freshwater basins and about as many cross-border aquifers. Backed by adequate financing, political will, and the engagement of stakeholders, the convention can help address the water challenges that we are all facing. But will it?

An ambitious agenda should be adopted now, at a time when the international community is negotiating the contents of the Sustainable Development Goals (SDGs), the successor to the UN Millennium Development Goals, which will expire in 2015. We at Green Cross hope that the new goals, which are to be achieved by 2030, will include a stand-alone target that addresses water-resources management.

Moreover, the international community will soon have to agree on a climate-change framework to replace the Kyoto Protocol. Climate change directly affects the hydrological cycle, which means that all of the efforts that are undertaken to contain greenhouse-gas emissions will help to stabilize rainfall patterns and mitigate the extreme water events that so many regions are already experiencing.

But the UN Watercourses Convention’s entry into force raises as many new questions as existed in the period before its ratification. What will its implementation mean in practice? How will countries apply its mandates within their borders and in relation to riparian neighbors? How will the American and Asian countries that have largely ignored ratification respond?

Furthermore, how will the convention relate to the Convention on the Protection and Use of Transboundary Watercourses and International Lakes, which is already in force in most European and Central Asian countries and, since February 2013, has aimed to open its membership to the rest of the world? Similarly, how will the convention’s implementation affect existing regional and local cross-border freshwater agreements?

The countries that ratified the UN Watercourses Convention are expected to engage in its implementation and to go further in their efforts to protect and sustainably use their cross-border waters. What instruments, including financial, will the convention provide to them?

Several legal instruments can be implemented jointly and synergistically: the Ramsar Convention on Wetlands, the UN Convention to Combat Desertification, and the UN Framework Convention on Climate Change, to name just a few. The UN Watercourses Convention’s long-delayed enactment should be viewed as an opportunity for signatory states to encourage those that are not yet party to cooperative agreements to work seriously on these issues.

Clearly, politicians and diplomats alone cannot respond effectively to the challenges that the world faces. What the world needs is the engagement of political, business, and civil-society leaders; effective implementation of the UN Watercourses Convention is impossible without it.

This is too often overlooked, but it constitutes the key to the long-term success of cooperation that generates benefits for all. Inclusive participation by stakeholders (including the affected communities), and the development of the capacity to identify, value, and share the benefits of cross-border water resources, should be an integral part of any strategy to achieve effective multilateral collaboration. More

 

© 2014

Famke Janssen addresses the World Youth Parliament for Water

gcint.org

March 14

Dear friends and distinguished members of the World Youth Parliament for Water.

The efforts of youth from all around the world to offer solutions and to work together to tackle the global water crisis both humble and inspire me. You are truly making a difference.

President Gorbachev, who spoke at the opening of the World Water Forum just two days ago, believes in the power of all people, particularly the youth, to make change aimed at protecting the environment. Young people – who will be tomorrow’s leaders -- have a vital role to play to ensure all people can live free of poverty and insecurity, and enjoy a world that conserves – not exploits – its many natural wonders.

I come from the Netherlands, a country that has a lot of experience in "coping" with water. My country is one that is vulnerable to global warming and rising oceans. Fortunately, we have a long history of finding ways to stop the ocean from flooding much of a country that rests largely below sea level. Water is a central part of Dutch life, from our many canals and dikes to the water-powered windmills that are dotted all over the country. Many historians argue that our social organization was built on the need for communities to organize democratically in order to pull together to stop an invading ocean or a broken dike – a recognition that water crises do not discriminate whether they come in the form of floods or drought and, most importantly, that water crises can unite people and not only separate them.

The Netherlands, however, is not a country associated with scarcity of water, a curse for many populations today that will grow much worse. For our world is already buckling under the weight of our 7-billion strong population, and in less than 20 years from now, we will have grown to 8.3 billion . As you know, this will only increase the demand for water. Consequently, by 2025 experts estimate that two-thirds of the world's population could be living under water stressed conditions.

Water scarcity is the problem that our future generations will have to face. Responsibility for solving this global challenge, some might say, lies unfairly in the hands of you and young people around the world. You did not cause the crisis, but it will be up to today’s youth to be prepared for steering our world toward a more sustainable future, a path that will ensure we respond to the water crisis, fairly share our available water resources, promote conservation and end waste, and help millions upon millions of people realize their basic Human Right to have access to safe Water and Sanitation.

Lack of adequate drinking water and poor or non-existent sanitation target the youth unfairly. For example, 443 million school days are missed every year due to sickness caused by water-related diseases, such as diarrhoea, dysentery and cholera. Lack of access to safe drinking water and sanitation is one of the main obstacles to education today. This is bad, but what is absolutely intolerable is that diarrhoea is the world’s second biggest killer of children and accounts for 1.5 million young lives every year. Moreover, in the absence of functioning drainage systems, water forms stagnant puddles that are soon infested with malaria-carrying mosquitoes: 3600 people die of malaria each day and 3200 of them are children. These grim statistics do not even take into account the ravages imposed on children as a result of water scarcity, which affects the availability of food and increases the risk of malnutrition among children.

Young girls are especially vulnerable to today’s water problems. For in many communities, young girls fetch water – often walking many miles to do so – placing their health, safety, education and development at grave risk. If a girl’s town or village has no safe source of water, it is often her job to collect it for her family, meaning she cannot attend school. This is a double tragedy that must be overcome.

Another factor against girls is the lack of sanitation facilities in schools, which can force many to stop attending classes when they reach puberty. Without education, futures of children and young women are being lost.

Without access to safe water and education, many young people will find it even harder – if not impossible – to rise out of poverty. As a result, when they become parents themselves, their own children will be trapped by the same problems.

But there are things we can all do today.

You are an extremely powerful voice of change. The more noise you make the more power you have. You have the right to demand a better world, as you are the ones who will inherit the problems we have caused. There are concrete actions that you can take that will result in meaningful change.

Green Crosses’ Green Lane Environmental Diary, which some of you may have participated in, shows ways to reduce our water footprints, from taking shorter showers, to avoiding use of plastic bottles. These basic tips, when practiced by an entire community can result in massive changes in the management of water resources. These are guidelines for individuals but collectively they can have profound impacts.

On a policy level you can demand that countries that have not ratified the United Nations Watercourses Convention do so. Some of you live in places that have not ratified the Convention and just 11 more signatures are needed from governments to validate it. It is the only global set of regulations and measures drafted for governing the more than 270 rivers in the world that are shared by multiple countries. 145 countries share these rivers and the groundwater linked to them. Their basins are home to 40% of the planet’s human population. But only 40% of these rivers are covered by official agreements on how to share and manage them, many of which are unsatisfactory. These weaknesses must be addressed if we are to tackle global challenges such as climate change and growing water demands.

Since you are here you have already developed the taste for politics. As potential future parliamentarians you will demand that the Right to Water and Sanitation is enshrined in your country’s constitutions and laws. It is imperative that you do all in your power to ensure your fellow countrymen and women can realize this fundamental, life-preserving right.

After meeting many of you and seeing what you have done here in Marseille, I have great confidence in your abilities to make a difference when it comes to ensuring all people have access to safe water.

I know you wont forget the experiences you have had here at the World Youth Parliament for Water. But I urge you to apply what you have absorbed, and put it into action, first and foremost in your own communities, and hopefully further afield.

Eleanor Roosevelt said, "the future belongs to those who believe in the beauty of their dreams". I encourage you to start believing. Thank you for the honor to speak with you and good luck. More

 

 

© 2014