ASHOK K. KESHARI is an Associate Professor of Water Resources engineering and Geoinformatics at Department of Civil Engineering, Indian Institute of Technology Delhi. He has earlier worked as Scientist at National Institute of Hydrology, Roorkee and in North Eastern Electric Power Cooporation, Shillong and at IIT Kanpur for short periods. He has been Postdoctoral Fellow and Visiting Researcher at Kongju National University, Korea in Years 2001-2002, and has also visited Japan, USA and Denmark. He specializes in hydrogeology, groundwater flow and pollution modelling, remote sensing & GIS, hydrologic simulation & design, FEM & optimization, environmental & river hydraulics, hazard & risk assessment and project economics. Dr. Keshari has published more than 120 papers and has carried out many real life projects for UP Bhumi Sudhar Nigam, Tata Infotech Limited, CGWB, WAPCOS, SASE, DRDO, ISRO, DST, CES, MCD, Pondicherry PWD, ORG Informatics, Haryana Distillery, etc., some of them are World Bank funded Projects. He is the member of Indian Association of Hydrologic Sciences (IAHS), Indian Association of Hydrologists (IAH) and is also member of Bureau of Indian Standards (BIS), Indo French Unit for Water and Waste Technologies (IFUWWT), etc. He has been the reviewer of many international and national journals.