Suchergebnisse

Presented at Competing interests in water resources - searching for consensus: proceedings from the USCID water management conference held on December 5-7, 1996 in Las Vegas, Nevada. ; Includes bibliographical references. ; Carbon emissions from the use of fossil fuels are increasing. Global warming continues resulting in more violent and destructive storms. The world population is increasing by nearly 90 million annually. Forests are rapidly being destroyed in the developing countries. Irrigated area per capita and food grain production are declining. The competition from the cities for water is increasing. Many aquifers are being polluted and/or over pumped. However, deforestation, soil erosion, population growth, and flooding decrease with water resources and other economic developments. Large new areas can be brought into agricultural production through the construction of irrigation and drainage facilities. There are many good sites for large dams in the developing countries. These dams can be used for hydropower, flood storage, irrigation supplies, and domestic water. Hydropower is clean energy and should be substituted for a large portion of the present use of fossil fuels. Benefits from fertilizers increase with increasing availability of water. Governments and politicians are poor managers of water resources. Many large development possibilities are international in scope. Electrical grids should be more interconnected and possibly continental in scope. Few if any developing countries have an institutional capacity for coordinated water resources developments. The international lending agencies should give priority to the financing of national and international water resources development authorities that at least partially privatize water resource management. Also priority should be given to those projects and activities that improve the environment.

Presented at the 2000 USCID international conference, Challenges facing irrigation and drainage in the new millennium on June 20-24 in Fort Collins, Colorado. ; Includes bibliographical references. ; Conservative projections foresee world population growing from approximately six billion to over eight billion people by 2050. During that same period, per capita food grain production, irrigated area, and the income of the poorest 20% are expected to decline. As a result, much of the world's population faces a future of poverty and hunger. These people, forced to the economic margins, often engage in harmful agricultural practices-fanning steep slopes, slash-burn agriculture, overgrazing-which increase soil erosion and flooding. In the context of growing population and poverty, this paper discusses several water-related issues: irrigation, depletion of groundwater, drainage, and flood control. Also discussed are the roles of government and the private sector in water resource management. Finally, it discusses the question of resource conservation or development, concluding that before conservation becomes a viable choice (especially for the poor), development is necessary. To help plan sound water projects in the future, this paper advocates the development of a global water resource inventory. It describes a start toward such an inventory-the IWMI "World Water and Climate Atlas"-and how it can be used.