World Register of Piano Key weirs prototypes

This interactive World Register of Piano Key weirs prototypes aims at gathering information on all Piano Key weirs constructed so far.

When the information is available, a form summarizes main technical information about the structure.

We would like to express our very warm thanks to the Owners, Designers, Operators, Constructors… who provided this information and allowed us to make it freely available.

Despite they are much more older than the Piano Key weir concept proposed for the first time in 2003 by Lempérière and Ouamane, two Algerian dams spillways have been added to this list. Indeed, their labyrinth design with overhangs is close to the Piano Key weir concept. They can then be considered as “ancestors” of modern Piano Key weirs and probably deserve to be part of this world register .

The first register was created in the framework of 3rd International Workshop on Labyrinth and Piano Key weirs  held in Qui Nhon, Vietnam, in 2017.
For any comment, request for correction or proposal of new projects, please contact us on pk-weirs@uliege.be.