Mr. C. P. Kumar has been retired as Scientist 'G' from National Institute of Hydrology (A Government of India Society under Ministry of Jal Shakti), Roorkee - 247667 (Uttarakhand), India. His research areas of interest have been assessment of groundwater potential; seawater intrusion in coastal aquifers; numerical modelling of unsaturated flow, groundwater flow and contaminant transport; and impact of climate change on groundwater. He has authored more than 100 technical papers and reports.