The PUB decade comprised five biennia;

• 1st Biennium, 2003-2005 - Initiation:
  Chair - Murugesu Sivapalan, University of Illinois at Urbana-Champaign
  
  
• 2nd Biennium, 2005-2007 - Growth:
  Chair - Jeff McDonnell, Oregon State University
  
  
• 3rd Biennium, 2007-2009 - Taking Stock:
  Chair - Günter Blöschl, Technical University of Vienna
  
  
• 4th Biennium, 2009-2011 - Consolidation:
  Chair - John Pomeroy, University of Saskatchewan
  Overview of the 4th Biennium
  
  
• 5th Biennium, 2011-2012 - Dissemination:
  Chair - Hubert Savenije, Delft University of Technology
  
  The 5th biennium will focus on finalising and launching the movement's main products, the PUB Practitioners' Guidelines (coordinated by John Pomeroy), and the PUB Report (edited by Guenter Bloeschl et al). This final phase is not intended to support any new activities, but to ensure that PUB and its outputs receive the required exposure and opportunities for practical application.

  IAHS President-Elect Hubert Savenije is coordinating the 5th biennium, and will oversee PUB's 'grand finale' as part of the 90th anniversary of IAHS in Delft in October 2012.