IJEP 42(8): 928-935 : Vol. 42 Issue. 8 (August 2022)
1. Remote Sensing Applications Centre (RSAC-UP), School of Geoinformatics, Lucknow – 226 021, Uttar Pradesh, India
2. Babasaheb Bhimrao Ambedkar University, School of Earth and Environmental Sciences (SEES), Lucknow – 226 025, Uttar Pradesh, India
3. Remote Sensing Applications Centre (RSAC-UP), Geospatial Data Division, Lucknow – 226 021, Uttar Pradesh, India
Abstract
Floods occur annually with varying severity in the Ghaghara river catchments. This problem has occurred over long period of time, though the flood intensity has worsened in recent years. This study evaluates the flooding behaviour of Ghaghara river in recent years in the state of Uttar Pradesh, India. It also discusses the unsupervised methodology used to find flood inundated areas due to heavy rainfall events during monsoon season along the river catchments. Due to increasing extreme events including heavy rainfall during monsoon and melting of the ice from glaciers induced by increasing temperature, there has been increase in flooding intensity and extent of inundation along the catchment districts of Ghaghara river. Using multi-temporal SAR DATA from sentinel and optical data from landsat data, this study maps the flood inundated areas with higher accuracy. The obtained areas can be analyzed and district-wise zonal statistics can be made to assess the impact of annual floods which will further help minimize the impacts of floods along the districts falling under the basin.
Keywords
Flood, Ghaghara river, SAR data, Optical data, Flood impact
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