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82st ICOLD
Annual Meeting

June 1st to 6 2014
Bali, Indonesia

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Gwangju Metropolitan City, South Korea

14-20 September 2014

Dedicated Website



Building on Recent Development Progress

13 to 15 October 2014

Villa Erba, Cernobbio, Italy

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IWA World Water Congress and Exhibition

Lisbon, Portugal

21-26 September 2014.

Dedicated website


83rd ICOLD Annual Meeting and 25th Congress

June 2015

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ICOLD President answers Oxford misleading study

Yes, we need to build more large dams for water storage and energy for sustainable development!



Recently a study named “Should we build more large dams? The actual costs of hydropower megaproject development”, authored by Atif Ansar et al. has been released by the Said business school of the Oxford University. The main conclusion of the report is that large dams projects experienced cost and time overrun, that their benefit cost ratio is very low and that small project are to be preferred. As small dams may only ensure a few percent of the storage and energy provided by large dams, this presentation actually favors not the small dams, but the fossil fuel plants.


This study focuses on cost and time overrun without addressing the true challenges. It is suffering important drawbacks and methodology issues that we will detail.


The existing 50 000 “large dams” supply 15% of the world electricity production and provide irrigation water for feeding 800 million people. But there are extra needs, as can be seen in many countries of Africa where people are cutting the forest for cooking energy, where they live in darkness and are hit by  water-related diseases and malnutrition  which result in millions of fatalities each year, mainly women and children.

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142 Bulletin 142
bulletin on safe passage of extreme floods
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143 New Bulletin 143
Historical review on ancient Dams
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144 Bulletin 144
Cost savings in Dams
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153 New Bulletin 153
Sustainable design and post-closure performance of tailings dams
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155 New Bulletin 155
Guidelines for use of numerical models in dam engineering
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24 New 24th Congress
Kyoto Congress 2012
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Registre des Barrages
The WRD is the best available data basis on dams in the world and we are constantly striving to better it.
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