- Fellow Akademi Sains Malaysia (FASc) since April 2012
- Group Leader, Asian Network on Climate Science and Technology (ANCST) Special Topic: Climate Change, Flood and Anthropogenic Activities from March 2017
- Associate Fellow, Akademi Sains Malaysia (2010-Apr 2012)
- Registered EIA Consultant and Subject Specialist to the Department of Environment (Registration no CS 0325)
- Ahli Majlis Professor Negara, Kluster Sumber Asli dan Alam Sekitar (since January 2012).
- Ketua Sub-Cluster Water Security, Majlis Professor Negara (Jan 2014- Jun 2018)
- Group Leader (Hydrology) for Japanese Society for the Promotion of Science (JSPS)-Asian Core Program (2011-2016)
- Secretary, International Water Association specialist Group on Appropriate Technology for Developing Countries (membership – 00886231
- Exco Member, Malaysian International Hydrological Program (MIHP) – Since 2001
- Council Member, Malaysian Water Association, (Oct 2013-Sep 2015)
- Council Member, Malaysian Water Association, 2007-2010 (membership no OM 0911)
- Member, International Water Association (membership no – 00886231)
- Member, Malaysian Hydrological Society (membership no – 0021)
- Member, Malaysia Nature Society (membership no –O N 21533 J)
- Member, Malaysian Geographical Society
- Member, International Association of Hydrological Science (IAHS) (membership no – 7813)
- Member, Asia-Pacific Hydrology and Water Resources Association (APHA)
- Member, Malaysian Water Association Standing Committee on Further Education and Research (2005)