International Workshop on Labyrinth and Piano Key Weirs 2025
Links to Past events: University of Liege PKW
Past Publications
4th International Workshop on Labyrinth and Piano Key Weirs
The 4th International Workshop on Labyrinth and Piano Key weirs will be held October 7-9, 2025 in Atlanta, Georgia, hosted by the United States Society on Dams. This will be the first time this event will be held in the USA.
Since 2011, this workshop series has brought together practitioners, researchers, and those involved in dam safety from across the globe to exchange knowledge and the latest developments on these nonlinear hydraulic structures.
Special emphasis is placed on planned or constructed projects, field data and structure operations, all aspects of design, lessons learned from construction, and research studies. A warm invitation to University students and young practitioners. Selected papers will be published in a hardbound book by Taylor and Francis and provided to attendees. Technical presentations will occur during 2 days of technical program followed by a field tour.
The workshop environment would be friendly, cooperative, and non-competitive with a priority of quality knowledge exchange and community networking.
Please check back often for links and instructions for Registration, Venue, Programme, and instructions for authors for manuscript submissions.
Are you part of the International Scientific Committee and providing technical peer reviews? Questions please contact ISC Vice-chair Brian Crookston brian.crookston@usu.edu or ISC Chair Sebastien Erpicum at s.erpicum@uliege.be.
Do you wish to become an event Sponsor? Please contact catrice@ussdams.org for details.
The call for abstracts has closed. Thank you for the many submissions received.
Link to Author Guidelines: Author GuidelinesSubscribe to RSS Feed (Opens in New Window)
| 2025 | ||
| Tuesday, October 7th | ||
| 9:25 AM |
Floating Trees at Co-Existing PKW & Gated Spillway James Yang, Vattenfall R&D Atlanta, GA 9:25 AM |
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|---|---|---|
| 9:45 AM |
Pascal Venetz, Laboratory of Hydraulic Constructions (LCH), Ecole Polytechnique Fédérale de Lausanne Atlanta, GA 9:45 AM |
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| 11:15 AM |
Biruk Belay, Helmut-Schmidt-University Hamburg Atlanta, GA 11:15 AM |
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| 11:35 AM |
Model-Prototype Upscaling of PKW Discharge Capacity James Yang, Vattenfall Atlanta, GA 11:35 AM |
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| 11:55 AM |
Physical Model Investigations on Nappe Instabilities at Labyrinth Weirs Michael Gebhardt, Federal Waterways Engineering and Research Institute Atlanta, GA 11:55 AM |
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| 1:45 PM |
Theoretical and Experimental Studies of Non-Rectilinear Weirs -From Labyrinth to PK-Weir Ahmed Ouamane, University of Biskra - Algeria Atlanta, GA 1:45 PM |
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| 2:05 PM |
Enhancing the Hydraulic Efficiency of Piano Key Weir (PKW) — Some Research Achievements James Yang, Royal Institute of Technology Atlanta, GA 2:05 PM |
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| 2:25 PM |
An Innovative Association of Fusegate and PK-Weir F. Lempérière, Hydrocoop Atlanta, GA 2:25 PM |
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| 2:45 PM |
An Innovative Use of Piano Key Weirs or Labyrinth Weirs for Long Dams in Plains Michel Ho Ta Khanh, VNCOLD- CFBR Independent Consultant Atlanta, GA 2:45 PM |
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| 3:35 PM |
Fatna Oukaili, EDF-R&D Atlanta, GA 3:35 PM |
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| 3:55 PM |
Experimental and Numerical Investigation of A-type Rectangular Side Piano Key Weir Sabir Hussain, IIT Roorkee Atlanta, GA 3:55 PM |
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| 4:15 PM |
Lisa Lüddecke, Helmut-Schmidt University Atlanta, GA 4:15 PM |
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| 4:35 PM |
Investigation of Flow Field Near a Type-A Piano Key Weir S. Hussain, IIT Roorkee Atlanta, GA 4:35 PM |
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| Wednesday, October 8th | ||
| 9:00 AM |
Lessons Learned From the Hydraulic Design of the Prado Dam Labyrinth Spillway Yajayra Diaz, USACE Risk Management Center Atlanta, GA 9:00 AM |
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| 9:20 AM |
Research and Application of Piano Key Weirs in Vietnam (2025) M. Ho Ta Khanh, VNCOLD- CFBR Atlanta, GA 9:20 AM |
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| 9:40 AM |
Honey, I Shrunk the PK Weir: A Case Study of Burton Pond Dam David Bisio, Schnabel Engineering Atlanta, GA 9:40 AM |
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| 10:00 AM |
Piano Key Weir With Orifice Sluice Dau Xuan Thuy, PECC2 Atlanta, GA 10:00 AM |
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| 11:10 AM |
Advances in Arced Labyrinth Weir Research and Application at the Springton Spillway Project Seth Thompson, GFT Atlanta, GA 11:10 AM |
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| 11:30 AM |
Design Approach for Labyrinth Weir: Case Study of La Laye Dam M. Roy, ARTELIA Atlanta, GA 11:30 AM |
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| 11:50 AM |
Value Added 3D Modeling – Lower Crow Dam Spillway Modification and Rehabilitation Project Justin Bartels, Stantec Consulting Services Atlanta, GA 11:50 AM |
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| 1:40 PM |
World Register of Piano Key Weirs Sebastien Erpicum, ULiège Atlanta, GA 1:40 PM |
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| 2:00 PM |
Nachtigal Dam: A 4917 m Long Labyrinth Spillway F. Laugier, Centre d'Ingénierie Hydraulique Atlanta, GA 2:00 PM |
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| 2:20 PM |
High Altitude Labyrinth Design and Construction Nick Miller, GEI Consultants Atlanta, GA 2:20 PM |
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| 2:40 PM |
Stainless-Steel Piano Key Weir Y. Fournié, SHEM Atlanta, GA 2:40 PM |
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