IJSSER

Title: FLOOD HAZARD VULNERABILITY MAPPING FOR DARBHANGA DISTRICT OF BIHAR USING SAR DATA: EFFORT TOWARDS EFFECTIVE DISASTER MANAGEMENT
Authors: Dr. Renu Bali and Ms. Shivani Pathak
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Dr. Renu Bali1 and Ms. Shivani Pathak2 1. Associate Professor, Geography, Kamala Nehru College, University of Delhi 2. Product Engineer, ESRI Inc. R&D Center, 2nd Floor KLJ Tower North, B-5 District Centre Netaji Subhash Place, Wazirpur, New Delhi, Delhi
MLA 8 Bali, Dr. Renu, and Ms. Shivani Pathak. "FLOOD HAZARD VULNERABILITY MAPPING FOR DARBHANGA DISTRICT OF BIHAR USING SAR DATA: EFFORT TOWARDS EFFECTIVE DISASTER MANAGEMENT." Int. j. of Social Science and Economic Research, vol. 6, no. 12, Dec. 2021, pp. 4673-4685, doi.org/10.46609/IJSSER.2021.v06i11.013. Accessed Dec. 2021. APA 6 Bali, D., & Pathak, M. (2021, December). FLOOD HAZARD VULNERABILITY MAPPING FOR DARBHANGA DISTRICT OF BIHAR USING SAR DATA: EFFORT TOWARDS EFFECTIVE DISASTER MANAGEMENT. Int. j. of Social Science and Economic Research, 6(12), 4673-4685. Retrieved from doi.org/10.46609/IJSSER.2021.v06i11.013 Chicago Bali, Dr. Renu, and Ms. Shivani Pathak. "FLOOD HAZARD VULNERABILITY MAPPING FOR DARBHANGA DISTRICT OF BIHAR USING SAR DATA: EFFORT TOWARDS EFFECTIVE DISASTER MANAGEMENT." Int. j. of Social Science and Economic Research 6, no. 12 (December 2021), 4673-4685. Accessed December, 2021. doi.org/10.46609/IJSSER.2021.v06i11.013.
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Abstract: Bihar experiences floods every year due to heavy rainfall in monsoon season and melting of snow in upper reaches of Himalayas during the summers causing both infrastructural damage and loss of life. During the floods, the sky is overcast, due to which traditional techniques of flood mapping and monitoring like aerial surveys and optical sensor satellite imagery fail to provide a good quality data as they are unable to penetrate through clouds and mist. New and alternative technique for the mapping of floods is the use of Synthetic Aperture Radar (SAR) data, which is capable of penetrating through clouds since it uses microwaves to capture the data. For the present study, Darbhanga district of Bihar was taken as the study area. The district faces floods each year due to Kosi River which emerges from Nepal Himalayas and enters Bihar. Aim of the study was to create flood hazard vulnerability map using flood inundation extent maps for the years 2017 to 2020. These maps help in demarcating and identifying the areas which are highly prone to floods annually. Flood inundation extent maps for this study were generated for each year from 2017 to 2020 using Sentinel-1 data and ArcGIS software. These flood inundation extent maps were then superimposed, and a vulnerability map was created. This flood hazard vulnerability map is a valuable source of information while making disaster management plan for the DRR of the region. These maps can help to understand spatial extent of flooding, and can provide scientists and authorities with objective data sources for decision making. These maps can play an important role in pre-disaster and post-disaster strategy planning in an effort towards making the community aware, more resilient and well prepared to face the disaster. These maps will further improve our understanding of the worse affected areas which requires more attention towards meeting immediate needs and relief operations after the floods.

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