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
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.
The Technical Dictionary on Dams provides translation of more than 3000 technical terms in the field of Dams (with Sketches, for certain terms), in the following languages: English 
, French 
, German 
, Spanish 
, Italian 
, Portuguese 
, Swedish 
, Slovene 
, Finnish 
.
Find the Dictionary by clicking here
Acknowledgements WRD
by P. LE DELLIOU, Chairman of the Committee of the Register and Documentation
The World Register on Dams (WRD) is a magnificent source of information for design, construction, scientifical work and statistical evaluations. It gives reference on dams of the world. It is one of the pillars of the international dam community and a show window to public with very high importance as well for ICOLD as for the National Committees in member and non-member countries.
Committee members work hard to complete the ongoing process of updating, to correct data that may be wrong, to add data to new fields ...
While every care has been taken by the National Committees and rapporteurs in collecting and recording the information furnished, neither the Central Office of ICOLD nor the National Committees and rapporteurs can take any responsibility for any errors or omissions which might have occurred in the Update 2006 of the WRD. We owe our apologies to those who may feel slighted due to such errors or omissions.
My sincere thanks to the members of the committee, the general secretariat of the ICOLD, which ensures the online availability of data, all those responsible in the national committees and also those who participated in the collection.