Dam Performance and Safety

Teton Dam fails
Teton Dam fails Dam safety is a huge global concern. While individual dams built today are likely to be much more secure than those built 50 years ago, the global stock of dams as a whole is ageing. Around the world, 5,000 large dams are at least 50 years old; the average US dam is in its 40s. These older dams are highly prone to dam bursts, especially in countries that lack adequate monitoring. As dams get old they become increasingly more expensive to maintain. Worldwide, there is systematic underfunding of dam maintenance. No figures are available for the cost of making the world's dams s

Beyond Dams: Options & Alternatives

Saturday, May 1, 2004
By design, dams alter the natural flow regime, and with it virtually every aspect of a river ecosystem, including water quality, sediment transport and deposition, fish migrations and reproduction, and riparian and floodplain habitat and the organisms that rely on this habitat. The purpose of this report is to provide stakeholders and decision–makers with an overview of low–impact and non–structural alternatives to dams. It is designed as a reference for anyone interested in exploring options for replacing a function served by an existing dam or replacing a function to be served by a dam


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