Statistical Analysis of Major Flood Events During 1980-2015 in Middle Ganga Plain, Ganga River Basin, India

Statistical Analysis of Major Flood Events During 1980-2015 in Middle Ganga Plain, Ganga River Basin, India

Aman Arora (Department of Geography, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, India), Masood Ahsan Siddiqui (Department of Geography, Faculty of Natural Sciences, Jamia Millia Islamia, New Delhi, India) and Manish Pandey (University Center for Research and Development (UCRD), Chandigarh University, Mohali, India)
Copyright: © 2020 |Pages: 17
DOI: 10.4018/978-1-7998-5027-4.ch012

Abstract

To understand the vicious nature of extreme flood events for the most flood prone region of Ganga River Basin, this study uses 36 years (1980-2015) of flood records from Dartmouth Flood Observatory (DFO) and the Centre for Research on the Epidemiology of Disasters (CRED) Emergency Events Database (EM-DAT). Further, the Water Level (WL) data collected from Central Water Commission (CWC) for same period are utilized to compare with the data of DFO and EM-DAT to identify the major flood events recorded in the Middle Ganga Plain (MGP). The final dataset comprises of 15 attributes (parameters) and is prepared of identified 99 flood instances for statistical analysis. The descriptive statistical analysis is performed for the following parameters: severity class, flood duration in days, affected flood area, flood magnitude, total number of deaths, and total count of displaced people. The graphical representation of all selected parameters provides an insight of common flood events, which lie between ±95% confidence level and exclude the major events as outliers.
Chapter Preview
Top

2. Study Area

Although not a definite physical unit, the Middle Ganga Plain lies between at latitudinal extend of 24°30'N-27°50'N and on a margin of longitudinal spread of 81°47'E- 87°50'E. The MGP is a huge physical area of 1,44,409 km2 and with the immense human, cultural and economic significance that makes it the heart region of India. It covers the Eastern Uttar Pradesh, Bihar Plains and some parts of Jharkhand state (Figure 1). The complete plain is lying within the Himalayan region in the north and the peninsular embankments in the south, respectively. The Ganga, having major tributaries- Ghaghara, Gandak, Son etc., is the main river which divides this plain from the middle and gives a clear cut North and South Middle Ganga Plain respectively. The western and eastern flanks of the MGP are wide open. The central part of the east-west continuum of the enormous isotropic Plain-there is no physical periphery as the plain gradually opens up in the west at the margin of the Upper Ganga Plain and so intangibility becomes invisible in the east bordering the Lower Ganga Plain. In conclusion, it is a par excellence transitional region, an essential part of the Ganga Valley, which has having all kinds of human, physical, cultural and economic properties, which makes it most significant expanse of the country (Singh 1971).

Complete Chapter List

Search this Book:
Reset