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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/20031
Title: Identification of Flood and Drought Years over the Northeast Indian Region Using Normalized Index
Authors: Kumre S.K.
Mishra, Surendra Kumar
Pandey, Ashish
Dayal D.
Amrit K.
Ahmad S.
Murray R.
Published in: World Environmental and Water Resources Congress 2020: Groundwater, Sustainability, Hydro-Climate/Climate Change, and Environmental Engineering - Selected Papers from the Proceedings of the World Environmental and Water Resources Congress 2020
Proceedings of World Environmental and Water Resources Congress 2020: Groundwater, Sustainability, Hydro-Climate/Climate Change, and Environmental Engineering
Abstract: The hydro-climatic condition over Indian region is governed by the southwest monsoon season (June to September), as a majority of annual rainfall occur in this season. The presence of flood and drought years influences the cultivation system and thus, the economy of the country as the Indian agricultural system is highly dependent on the natural rainfall. This study aims to identify the flood and drought years for the north-east Indian region from 1916 to 2015 by using sub-divisional rainfall data collected from Open Government Data (OGD) Platform of India. For this investigation, the normalized index (NI) of annual rainfall is utilized to recognize a particular year as drought or flood year. The century-long monthly rainfall data collected for four sub-divisions of the north-east Indian region spanning across 9 states (Arunachal Pradesh, Assam, Meghalaya, Nagaland, Manipur, Mizoram, Tripura, Sikkim, and Sub-Himalayan West Bengal) is utilized to compute the annual rainfall, average, standard deviation, and the normalized index. The results for each sub-division have been plotted to identify the normal, drought, or flood years. The results reveal that there is a significant inter-Annual variation of rainfall over all the sub-divisions, leading to frequent drought and flood years. This study recommends the application of the normalized index over north-east Indian region due to its ease of computation and uniformity.
Citation: World Environmental and Water Resources Congress 2020: Groundwater, Sustainability, Hydro-Climate/Climate Change, and Environmental Engineering - Selected Papers from the Proceedings of the World Environmental and Water Resources Congress 2020, 2020, 229- 235. Environmental and Water Resources Institute (EWRI) of the American Society of Civil Engineers (ASCE)
URI: https://doi.org/
http://repository.iitr.ac.in/handle/123456789/20031
Issue Date: 2020
Publisher: American Society of Civil Engineers (ASCE)
Keywords: Drought and Flood Years
Monsoon
Normalized Index
North-East Indian region
Rainfall
Agricultural robots
Climate change
Cultivation
Drought
Floods
Groundwater
Rain
Sustainable development
Agricultural system
Annual rainfall
Climatic conditions
Interannual variation
Monthly rainfalls
Natural rainfalls
Southwest monsoon
Stand
ISBN: 9.78E+12
Author Scopus IDs: 57202602245
55463271000
55851948174
57202582431
57194656262
Author Affiliations: Kumre, S.K., Dept. of Water Resources Development and Management, Indian Institute of Technology Roorkee, Roorkee, India
Mishra, S.K., Dept. of Water Resources Development and Management, Indian Institute of Technology Roorkee, Roorkee, India
Pandey, A.
Appears in Collections:Conference Publications [WR]

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