International Science Community Association International Research Journal of Environmental Sciences 2319 - 1414 5 7 2016 07 22 Global Warming Effects on Water Resources: An Overview 70 74 EN Anand Yashpal A. 1 Department of Zoology, Biomedical Technology and Human Genetics, University School of Sciences, Gujarat University, Ahmedabad, India George Linz Buoy 2 Highland Hyacinth N. 3 U.K. Saha 1 University of Georgia Cooperative Extension, 2300 College Station Road, Athens, GA 30602, USA A.O. Fayiga 2 Soil and Water Science Department, University of Florida, Gainesville, FL 32611, USA Padma Mahanti 1 Conservator of Forests, Department of Forest and Wildlife, Kerala, India Sanjeet Kumar 2 School of Life Sciences, Ravenshaw University, Odisha, India Ahamed R. Mafaz 1 Department of Civil Engineering, Coimbatore Institute of technology, Coimbatore, India R. Saraswathi 2 Department of Civil Engineering, Coimbatore Institute of technology, Coimbatore, India Chandragiri Sandhiya Santhi 1 Department of Civil Engineering, Coimbatore Institute of technology, Coimbatore, India R. Saraswathi 2 Department of Civil Engineering, Coimbatore Institute of technology, Coimbatore, India Sapphire M. Divya 1 Sri Paramakalyani Centre for Environmental Sciences, Manonmaniam Sundaranar University, Alwarkurichi, Tirunelveli-627412, TN, India A. Sabaridasan 2 G. Jesslin 3 Thangam P. Edwin 4 R. Soranam 5 I.B. Udoh 1 Department of Geoinformatics and Surveying, Faculty of Environmental Studies, University of Uyo. Uyo, Nigeria S.A. Inyang 2 Minsitry of Land, Housing and Survey, Giginya Secretariat, Sokoto State, Nigeria Mahanti Padma 1 School of Management, Centurion University of Technology and Management, Bhubaneswar, India Mishra Panda Smita 2 School of Management, Centurion University of Technology and Management, Bhubaneswar, India Pandav Bivash 3 Department of Endangered Species Management, Wild Life Institute of India, Dehradun, India Aparna Sinha 1 Civil Engg. Deptt., GEU, Dehradun, UK, India Arnav Gupta 2 Civil Engg. Deptt., GEU, Dehradun, UK, India Sanjeev Kumar 3 Civil Engg. Deptt., GEU, Dehradun, UK, India > Review Paper 2016 4 7 2016 07 22 Water resources are highly responsive to climate variation in all time and space scales. During the last century, the global runoff is increased by about 3%. The amount of various greenhouse gases has been enlarging over the time. The accumulation of greenhouse gases is causing increase in global warming effects. After 1950, a number of ascertained alterations are new over tenner to millennium1 .The ill-effects on nature can be observed as ocean and atmosphere are getting warmer, the quantity of ice and snow are melting and the sea level is raised up. From the last 30 years there has been consecutively heater atmosphere in the Earth’s surface with respect to any decade since 1850. In northern hemisphere the 30 year duration between 1983-2012 was found to be the most heater period. Over the period 1880-2012, a warming of about 0.85[0.65-1.06] °C in temperature data of land and ocean surface averaged globally is calculated. It is the complete extent of scientific practices all together, like meteorology, geology and oceanography, but no one knows the real effects for specified parts in the world. Even every scientist agrees global warming will have plenty ill effects on earth and i.e. on the climate and water resources. Copyright@ International Science Community Association