IOSR Journal of Mechanical and Civil Engineering (IOSR-JMCE) e-ISSN: 2278-1684,p-ISSN: 2320-334X, Volume 16, Issue 5 Ser. IV (Sep. - Oct. 2019), PP 68-79 www.iosrjournals.org DOI: 10.9790/1684-1605046879 www.iosrjournals.org 68 | Page Assessing Climatic Change Impacts on Water Resource of Different Districts of Odisha Abhijeet Das 1 , Dr.Bhagirathi Tripathy 2 1 Assistant Professor (Consolidated), Civil Engineering Department, IGIT, Sarang, Odisha. 2 Assistant Professor, Civil Engineering Department, IGIT, Sarang, Odisha. Corresponding Author; Abhijeet Das Abstract: It is rightly spoken “Climate change eclipses the planet earth”. The issue is so predominant now, it gradually restricting our social life, peace and harmony. Number of natural calamities like flood, cyclone, drought, severe heat and cold wave, rising of sea level, melting of snow etc is some of the ready effects directly felt in different parts of the globe. The cause may be many beginning from urbanization to modern life style. But sometimes these may be part of our growth. So there may be trade off or compromise between growth and balance with nature. The study may be a small step towards recognizing the arrival of climate change and its impact on particularly agriculture, as our state largely depends on agriculture based economy. The monthly rainfalls (1901-2010) of total 30 districts from IMD sources are considered for the purpose. The statistics of all the rainfall data are calculated along with its time series plotting. The trend analysis has been done using Kendall rank test at 1%, 5% and 10 % significance level. The average monthly temperature trend is also calculated similarly. The sensitive districts of rainfall are marked. The inflows to reservoirs within these districts are also checked. The standard cropping pattern adopted in different parts of the state is also shown in this study. As there is a short fall in June, rainfall the inflow to reservoir is also reducing. But during July on ward the rainfall as well as the inflow is also improving. In different studies it was also established that although there is no remarkable change in total rainfall, the change is seen in its spatio-temporal variation. Keywords: Climate, Natural calamities,Urbanization, Rainfall, Time series, Kendall rank test. --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 20-10-2019 Date of acceptance: 02-11-2019 --------------------------------------------------------------------------------------------------------------------------------------- I. Introduction: Climate change is inevitable and unstoppable in its nature. Climate change is a phenomenon due to emissions of greenhouse gases from fuel combustion, deforestation, urbanization and industrialization resulting variations in solar energy, temperature and precipitation. It is a real threat to the lives in the world that largely affects water resources, agriculture, coastal regions, freshwater habitats, vegetation and forests, snow cover and melting and geological processes such as landslide, desertification and floods, and has long-term effects on food security as well as in human health and also threaten livelihood and economic stability. Climate is one of the main determinants of agricultural production. Throughout the world there is significant concern about the effects of climate change and its variability on agricultural production.Current climate variability and change is predicted to cause increasing global temperature and subsequently impact the rainfall. Agriculture is one of the most climate sensitive sectors as it is continuously and directly affected by temperature and precipitation.Climate changes pose significant economic and environmental risks worldwide. The economy of Odisha mainly depends on agriculture, and this in turn largely depends on available water resources. Climate variability is concerned with the changeability in the mean state and other statistics (such as Mean, Standard deviation, Coefficient of variation, Skewness, Kurtosis etc.)of climate elements on all spatial and temporal scales beyond those of individual weather events.Climate change is on the other hand is variability that continues over a longer period and statistically significant. Climatic variability particularly rainfall is the major factor influencing the agricultural productivity and sustainability in the tropics. Around 60% of the Indian agriculture is rain-dependent, distress-prone and vulnerable to climate. Constant increase in green house gas concentrations, since pre-industrial times, has led to positive radioactive force of the climate, tending to warm the surface. II. Review Of Literature: Climate and its variability impact all sectors of economy in several ways like abnormality in rainfall, results in severity and frequency of floods. Any increment in maximum temperature may increase mean sea