About the Author: Dr. Chandrashekhar Bhuiyan is a researcher in the field of Applied Geoscience. He obtained his Bachelor's in Geology from the University of Burdwan followed by his M.Tech. in Applied Geology from the University of Roorkee (presently, Indian Institute of Technology Roorkee), and his Ph.D from Indian Institute of Technology Kanpur. He is a DAAD Fellow, and carried out a part of his doctoral research at the Friedrich Schiller University, Jena, Germany through DAAD "Sandwich-model PhD" programme. He has post-PhD research experience at several national and international institutes including School of Environmental Sciences, Jawaharlal Nehru University and School of Environmental Studies, University of Delhi. Dr. Bhuiyan was a recipient of DAAD 'Reinvitation Fellowship' to visit the University of Cologne, Germany in 2009 as a Visiting Scientist. He has authored more than 25 research articles in reputed international journals and conferences, and also published several book chapters. His research interests include hydrogeology, extreme hydrology, water resources, aquifer vulnerability modelling, artificial groundwater recharge, and natural hazards. He has carried out extensive research on hydrogeological modelling, drought dynamics, water resources assessment, and water scarcity problems of Rajasthan and Gujarat. He along with his associates is also engaged in research on anthropogenic and climate change impacts on Himalayan springs, particularly in Sikkim. He has worked also in international projects (funded by World Bank) on seismic micro-zoning through trench survey and active fault mapping in Kachchh, Gujarat. Currently, Dr. Bhuiyan is affiliated to Sikkim Manipal Institute of Technology, as Professor and Head of the Civil Engineering Department.
Prof. Wolfgang-Albert Flügel is retired Chair for Geoinformatics and former Head of the Department of Geoinformatics, Hydrology and Modelling (DGHM) at the University of Jena, Germany. Earlier he was an Assistant Professor at the University of Heidelberg, Germany (1978-1984), Senior Specialist Scientist at the Hydrological Research Institute (HRI), Department of Water Affairs in South Africa (1985-1990), Professor for Geohydrology at the University of Bonn, Germany, (1990-1994), and Principal Researcher at the International Water Management Institute (IWMI), Colombo, Sri Lanka (2002-2003). His research expertise is about hydrological system analysis, process based rainfall-runoff modelling, climate change impact assessment and analysis in large river basins, e.g. the Brahmaputra River basin, and integrated land and water resources management (ILWRM). He acquired and fund raised 93 interdisciplinary research projects in Southern Africa, Brazil, Europe and South Asia funded e.g. by the European Commission (EC), the German Research Association (DFG), and the Federal Ministry of Education and Research (BMBF). He supervised 96 MSc theses, and 24 PhD projects, has authorship in more than 120 publications, and was editor of a Springer booklet on the Brahmaputra River basin. He established the Integrated Land Management System (ILMS) at the Jena University, in 2006 and coordinated the INNO-Asia project in the North-Eastern Region (NER) of India. In 2000, he was awarded with the Biennial Medal of Natural Systems of the Modelling and Simulation Society of Australia and New Zealand (MSSANZ), and in 2012 and 2014 he was appointed by the former Chief Minister of Assam, India, as international member of the "Advisory group of experts on flood and erosion and water management" for the Brahmaputra River. Since his retirement in 2014, he is an internationally active consultant for applied Geoinformatics in Integrated Land and Water Resources Management (ILWRM) and hydrological climate change analysis in river basins.

Dr. Sharad Kumar Jain, is an eminent hydrologist and researcher. He recently superannuated from the post of the Director of National Institute of Hydrology (NIH), Roorkee, India and is currently serving as Visiting Professor, Civil Engineering Department, IIT Roorkee. He received his B.E (Civil) from University of Roorkee, (1980) and M. Tech (Hydraulics & Water Resources) from Indian Institute of Technology Kanpur (1982). He received his PhD from University of Roorkee (1990). He has a vast experience in research and teaching for more than 38 years. His research interests include Surface Water Hydrology, Water Resources Planning and Management, and Application of Advanced Tools such as Artificial Neural Networks, Remote Sensing, GIS and Decision Support Systems etc.

Dr. Jain has authored 5 books, and contributed to over 250 technical papers in various international and national journals. He has also edited 5 books, and written 8 chapters in handbooks/ encyclopedia, 20 book chapters and over 80 technical reports at NIH. He has also worked on more than 40 research and consultancy projects. Dr. Jain has worked as visiting faculty at the Department of Civil and Environmental Engineering in Louisiana State University, Baton Rouge, USA. He is a member of many national/international committees in his field of work and is a member of editorial boards of three journals.