- Member of the Scientific Advisory Board of the German “IHP/HWRP National Committees”
- Member of the Extended Presidium of the DHG
- Member of the Scientific Advisory Board “Earth System Sciences Program” of the Austrian Academy of Sciences
Additional Memberships
- Since 2020 | Member of the scientific committee of the TUM SEED Center
- Since 2017 | Member of the DWA working group HW-4.5 Time variant flood risk factors
- Since 2016 | Member of the DWA working group HW-4.1 Risk communication
- Since 2014 | Head of the Hydrological Sciences Association in the DWA
- Since Foundation 2011 | German Hydrological Society e.V., www.dhydrog.de
- 2011 - 2014 | Member of the extended Executive Committee of the German Hydrological Society
- 2011 - 2014 | Member of the Scientific Advisory Board of the German Weather Service
- 2011 - 2014 | Member of the jury for the Bode Water Resource Prize at the Stifterverband für die Deutsche Wissenschaft, www.deutsches-stiftungszentrum.de
- Since 2010 | Member of the Main Committee Hydrology and Water Management of the DWA
- Since 2010 | Member of the DWA Executive Board
- 2010 - 2014 | Chairman of the Main Committee Hydrology and Water Management in the DWA
- 2006 - 2012 | Member of the working group HW-4.5 Implementation of RIMAX results in practice in the DWA
- 2006 - 2010 | Member (deputy head) of the working group HW-4.2 Runoff from extreme precipitation in the DWA
- 2003 - 2009 | Member of the working group HW-1.5 Hydrometry of open waters
- 2003 - 2007 | Member of the Scientific Committee of the German UNESCO Commission
- Since Foundation 2002 | Association of Hydrological Sciences (DWA), www.fghw.de
- 2002 - 2009 | Head of the Working Group Public Relations and Communication in the Association of Hydrological Sciences (editor of the Hydrobrief)
- 2002 - 2005 | Deputy Head of the Association of Hydrological Sciences (DWA)
- Since 2001 | Member of the Scientific Advisory Board of the German IHP/HWRP National Committee
- Since 2000 | Member of the working group HW-4.1 Flood Risk Management in the DWA
- 1998 - 2002 | Head of the working group HW-2.3 Cooperation of hydrologists in the DWA
- 1998 - 2000 | Deputy Chairman of the Main Committee Hydrology and Water Management in the DWA
- 1997 - 2002 | Member of the BMU working group on mathematical river basin models
- 1997 - 1998 | Member of the CHR working group Morphological Models
- 1996 - 2002 | Member of the BfG working group on mathematical models
- 1996 - 1998 | Member of the DVWK working group on solids transport models
- Since 1993 | German Association for Water, Wastewater and Waste (DWA), www.dwa.de
- Since 1993 | International Association of Hydrological Sciences (IAHS)
- Water Resources Research
- Journal of Hydrology
- Water Resources Management
- Journal of Hydrological Sciences (IAHS Press)
- Hydrology and Earth System Science
- Journal of River Basin Management
- Environmental Modelling and Software
- Hydrologie und Wasserbewirtschaftung (Editor)
- Korrespondenz Wasserwirtschaft (Editor)