Bulletin 209 - English
Methods for the improvement of data quality and management of dam performance monitoring data
By the Committee Dam Surveillance
https://doi.org/10.68765/ZKQP5361
Bulletin 211 - English
Hydraulic and structural design of chute spillways with stilling basins and upgrading of spillways
By the Committee Hydraulics for Dams
https://doi.org/10.68765/PFUK8250
Bulletin 212 - English
Surveillance of spillways
By the Committee on Hydraulics for Dams
https://doi.org/10.68765/HAEA9168
Bulletin 207 - English
Extreme flood estimation and associated uncertainty
By the Committee Flood Evaluation and Dam Safety
https://doi.org/10.68765/EZFN9687
Bulletin 182 - English / French
Sediment management in reservoirs: National Regulations and Case Studies
By the Committee Sedimentation of Reservoirs
https://doi.org/10.68765/RLCJ5736
Bulletin 204 - English
Flood Risk Assessment
By the Committee Flood Evaluation and Dam Safety
https://doi.org/10.68765/RXSH5983
Bulletin 210 - English
Dam Surveillance Data and Observations – Effective Diagnostic Analyses to Determine Behaviour Patterns
By the Committee Dam Surveillance
https://doi.org/10.68765/YLSH5002
Bulletin 210 - French
Dam Surveillance Data and Observations – Effective Diagnostic Analyses to Determine Behaviour Patterns
By the Committee Dam Surveillance
https://doi.org/10.68765/SSNY1265
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2026 ANCOLD Conference
Nipaluna Hobart, Lutruwita Tasmania
26 - 28 October 2026
COP31 – UN Climate Change Conference
Antalya EXPO Center, Antalya, Türkiye
9–20 November 2026
ICOLD WEBINAR #4: Environmental Sustainability of Dams & Reservoirs
November 25, 2026
1pm - 3pm (CET)
Free event
2026 United Nations Water Conference
ADNEC Exhibition Centre, Abu Dhabi, United Arab Emirates
8–10 December 2026
95th ICOLD Annual Meeting – Daejeon 2027
Daejeon Convention Center, Daejeon, Republic of Korea
21–28 May 2027
The world's best databasis on dams, established upon the national inventories sent by the member countries of ICOLD. The Register is continuously updated. It includes more than 55,000 Dams.
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Laos Dam failure
Press Release
Dam Failure in Laos
The International Commission on Large Dams (ICOLD) is following the situation very closely as information is just coming out about the collapse of the saddle dam at the Xe Pian Xe Namnoy Hydroelectric Dam, in Laos.
ICOLD newly elected President Michael Rogers made the following statement:
“Our deepest condolences go out to the people of Laos impacted by this tragedy, especially those families who have lost loved ones and/or their homes.
Dams are critical pieces of not only physical, but also socio-economic infrastructure that supply renewable power, storage for agricultural, industrial, municipal and community water supply. Like other large infrastructure in our societies, dams provide critical service, but also pose high risks that must be addressed during the planning, design and construction phases. The precautionary principle of dams to prevent and/or mitigate adverse downstream safety consequences informs and is at the heart of the ICOLD Mission.
ICOLD has been working for 90 years to promote the safe and sustainable design and construction of dams. As an organization of 100 nations committed to the safety of all dams around the world, ICOLD stands ready to assist and support the project owner and the national dam safety organization in Laos to assess the situation and work towards recovery. Moving forward, it will be important to understand the full cause of this apparent failure so that important lessons may be shared with other nations and dam owners. This is the heart of ICOLD mission and the main reason why it was founded. For example, during its recent Congress in Vienna (July 1-7 2018), ICOLD organized an important open workshop on the lessons learned from the Oroville Spillway Incident (USA, 2017).
Again, our heartfelt condolences go out to the thousands of persons downstream of this dam that have been impacted by this tragedy and ICOLD stands ready to support Laos in any way possible.”
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