World Water Day 2012 official video

World Water Day 2012 official video, focusing on the theme of the campaign "Water and Food Security".

Produced by kf@kantfish.com and featuring a soundtrack by DDG Project. Animations by antiestatico.com
Download your animation on: http://www.unwater.org/worldwaterday

Himalaya's Losing Ice

Himalayan Glaciers Retreating at Accelerated Rate in Some Regions: Consequences for Water Supply Remain Unclear.

Everest and Lhotse mountain peaks

ScienceDaily (Sep. 12, 2012) — Glaciers in the eastern and central regions of the Himalayas appear to be retreating at accelerating rates, similar to those in other areas of the world, while glaciers in the western Himalayas are more stable and could be growing, says a new report from the National Research Council.

The report examines how changes to glaciers in the Hindu Kush-Himalayan region, which covers eight countries across Asia, could affect the area's river systems, water supplies, and the South Asian population. The mountains in the region form the headwaters of several major river systems -- including the Ganges, Mekong, Yangtze, and Yellow rivers -- which serve as sources of drinking water and irrigation supplies for roughly 1.5 billion people.

The entire Himalayan climate is changing, but how climate change will impact specific places remains unclear, said the committee that wrote the report. The eastern Himalayas and Tibetan Plateau are warming, and the trend is more pronounced at higher elevations. Models suggest that desert dust and black carbon, a component of soot, could contribute to the rapid atmospheric warming, accelerated snowpack melting, and glacier retreat.

While glacier melt contributes water to the region's rivers and streams, retreating glaciers over the next several decades are unlikely to cause significant change in water availability at lower elevations, which depend primarily on monsoon precipitation and snowmelt, the committee said. Variations in water supplies in those areas are more likely to come from extensive extraction of groundwater resources, population growth, and shifts in water-use patterns. However, if the current rate of retreat continues, high elevation areas could have altered seasonal and temporal water flow in some river basins. The effects of glacier retreat would become evident during the dry season, particularly in the west where glacial melt is more important to the river systems. Nevertheless, shifts in the location, intensity, and variability of both rain and snow will likely have a greater impact on regional water supplies than glacier retreat will.

Melting of glacial ice could play an important role in maintaining water security during times of drought or similar climate extremes, the committee noted. During the 2003 European drought, glacial melt contributions to the Danube River in August were about three times greater than the 100-year average. Water stored as glacial ice could serve as the Himalayan region's hydrologic "insurance," adding to streams and rivers when it is most needed. Although retreating glaciers would provide more meltwater in the short term, the loss of glacier "insurance" could become problematic over the long term.

Water resources management and provision of clean water and sanitation are already a challenge in the region, and the changes in climate and water availability warrant small-scale adaptations with effective, flexible management that can adjust to the conditions, the committee concluded. Current efforts that focus on natural hazard and disaster reduction in the region could offer useful lessons when considering and addressing the potential for impacts resulting from glacial retreat and changes in snowmelt processes in the region. More

 

Thirsty South Asia's river rifts threaten "water wars"

KANZALWAN, India-Pakistan Line of Control (AlertNet) - As the silver waters of the Kishanganga rush through this north Kashmir valley, Indian labourers are hard at work on a hydropower project that will dam the river just before it flows across one of the world's most militarised borders into Pakistan.

The loud hum of excavators echoes through the pine-covered valley, clearing masses of soil and boulders.

The 330-MW dam shows India's growing focus on hydropower but also highlights how water is a growing source of tension with downstream Pakistan, which depends on the snow-fed Himalayan rivers for everything from drinking water to agriculture.

Islamabad has complained to an international court that the dam in the Gurez valley, one of dozens planned by India, will affect river flows and is illegal. The court has halted any permanent work on the river for the moment, although India can still continue tunneling and other associated projects.

In the years since their partition from British India in 1947, land disputes have led the two nuclear-armed neighbours to two of their three wars. The next flashpoint could well be water.

"There is definitely potential for conflict based on water, particularly if we are looking to the year 2050, when there could be considerable water scarcity in India and Pakistan," says Michael Kugelman, South Asia Associate at the Woodrow Wilson International Center for Scholars in Washington.

"Populations will continue to grow. There will be more pressure on supply. Factor in climate change and faster glacial melt ... That means much more will be at stake. So you could have a perfect storm which conceivably could be some sort of trigger." More

 

The Battle for Water - Harvesting and conserving rainwater key to boosting crop yields

In its Rio+20 call for action, CGIAR urged Rio+20 actors to address the unequal sharing and unsustainable use of natural resources such as water and land, through improved governance and technology dissemination. World food production, hence food security depends on water but water availability per capita is drastically decreasing.

To sustainably ensure a steady food production especially in poor smallholdings in the (global) south, mainly practicing rain fed agriculture, one priority is to help local rural communities better manage “green water” – the rainwater captured by the soil and available for plants.

For decades the International Crops Research Institute for the Semi-Arid Tropics (ICRISAT) has been working on successful local and farmer participatory water governance models.

Whether it's bread, meat, milk or bananas, whatever we eat demands water. But with a rapidly growing population (already more than 7 billion people), water availability gets more and more scarce.

There is a correlation between poverty, hunger and water stress. The UN Millennium Project has identified the "hot spot" countries in the world with the highest number of malnourished people.

These countries coincide closely with semi-arid and dry sub-humid hydroclimates, savannahs and steppe ecosystems, where rainfed agriculture is the dominating source of food, and where water constitutes a key limiting factor to crop growth.

The Food and Agriculture Organisation (FAO) estimates that we need to increase agricultural production by 70% to feed the projected 9 billion people expected on the planet by 2050. But, given the current global food crisis, boosting agricultural production will certainly increase water stress.

PRODUCING MORE WITH LESS WATER

We urgently need to increase water productivity. But how do we produce more cereals, milk and bananas with less water? And what type of water are we talking about?

At the last World Water Forum in Marseille in March, experts talked about the colour of water: blue water (irrigation), green water (rainwater captured by the soil and available for plants) and grey water (polluted water that could be treated and recycled). More

Global prize for water harvesting project in Sana’a

An American woman who has lived in Yemen for more than a decade, Sabrina Faber, has won the €75,000 first prize in the international Philips’ Livable Cities Award for her proposal to  address water shortages in Sana’a. Faber’s ‘RAINS’ is a rainwater aggregation proposal will now be put to the test.


 Faber has often faced water shortages. While trekking through the Yemeni countryside, she came across a method used by local people to conserve water. The cisterns used by mountaintop villages led her to consider how this practice could be applied to Sana’a.


 Many of Yemen’s cisterns are in a state of disrepair. Meanwhile, access to water is something many take for granted. But with rainfall being seasonal, water quickly becomes scarce causing major problems for burgeoning populations. The rise in unsustainable drilling of new wells in Sana’a also means that the little water that remains is rapidly depleting.  As a result, bo    ttled water is often the only option.


However, for much of the population, this is an expense they simply can’t afford. This in turn means infection, particularly among the young and elderly, is on the increase as many resort to the city’s heavily polluted water supply out of necessity. RAINS revisits the traditional Yemeni technique of harvesting rainwater from flat rooftops.


 Faber’s scheme proposes the modification of the existing structures in Sana’a to capture, filter and store rainwater. Each modified cistern would be capable of generating 10,000 to 50,000 liters of clean, dependable water for domestic use annually.  By working with local contractors and associations to identify pilot structures with decent viability, Faber hopes that this valuable method will be applied to any future construction in Sana’a, particularly residential building.  More >>>