World's 37 Most Water-Stressed Countries
By Paul Reig, Andrew Maddocks and Francis Gassert - December 12, 2013 Providing stable freshwater supplies is a priority for every country in the world. Yet stable supplies are increasingly hard to come by in many countries, as water-related risks increase. For example, recent droughts threatened GDP growth in the United States. Monsoon floods killed hundreds and displaced thousands in India. Increased competition for water may impact energy production in China, and the list goes on. WRI’s Aqueduct project recently evaluated, mapped, and scored water risks like these in 100 river basins, ranked by area and population, and 181 nations—the first such country-level water assessment of its kind. We found that 37 countries face “extremely high” levels of baseline water stress (see list at bottom). This means that more than 80 percent of the water available to agricultural, domestic, and industrial users is withdrawn annually—leaving businesses, farms, and communities vulnerable to scarcity. Evaluating National Water Risks Baseline water stress measures how much water is withdrawn every year from rivers, streams, and shallow aquifers for domestic, agricultural, and industrial uses. Scores above 4 indicate that, for the average water user, more than 80 percent of the water available is withdrawn annually. That means companies, farms, and residents are highly dependent on limited amounts of water and vulnerable to even the slightest change in supply. Such situations severely threaten national water security and economic growth--especially if a country does not have adequate water-management plans in place. National and local governments must respond with management and conservation practices that will ensure long-term availability of water resources for all users, including the environment. A Look at Countries’ Water Risks
Why Is It Important to Analyze Water Risk at the Country
Level? Water data is usually collected and reported at local geographic scales. However, water-related decisions and investments are often made at much larger scales, requiring country-level information. Commercial banks, for example, usually evaluate certain types of risk (e.g. political, social, and economic risk) to their global portfolios at the country level. Without accurate measures of countries’ water risk, such banks might ignore water-related risks to their investments. There is, therefore, a compelling need to translate locally collected or locally modeled water risk data to the country level. Extremely High Water Stress Can Be Managed Singapore, for example, has the highest water stress ranking (5.0). The country is densely populated and has no freshwater lakes or aquifers, and its demand for water far exceeds its naturally occurring supply. Yet the country is consistently held up as an exceptional water manager. Singapore invests heavily in technology, international agreements, and responsible management, allowing it to meet its freshwater needs. Advanced rainwater capture systems contribute 20 percent of Singapore’s water supply, 40 percent is imported from Malaysia, grey water reuse adds 30 percent, and desalination produces the remaining 10 percent of the supply to meet the country’s total demand. These forward-thinking and innovative management plans provide a stable water supply for Singapore’s industrial, agricultural, and domestic users—even in the face of significant baseline water stress. Aqueduct’s country rankings and map make it easy to quickly assess country-level water risk, as well as compare exposure to water-related risks between countries. This information will help governments, financial institutions, companies, and research organizations better prioritize high-risk areas for investments in improved water management. In that sense, country-level water risk data is a key tool in moving the world toward a water-secure future. SOURCE: World Resources Institute Copyright © 1996 - 2013, VertMarkets, Inc. All rights reserved. To subscribe or visit go to: http://www.wateronline.com http://www.wateronline.com/doc/world-s-most-water-stressed-countries-0001 |