International Journal For Multidisciplinary Research
E-ISSN: 2582-2160
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Volume 6 Issue 5
September-October 2024
Indexing Partners
A Study on Flood Hazard Zonation Mapping Based on GIS-driven Approach using Remote Sensing Data and Weighted Overlay Analysis (Woa) Model
Author(s) | Kamuju.narasayya |
---|---|
Country | India |
Abstract | Flood hazard mapping is crucial for identifying flood-prone areas and developing effective mitigation strategies. This study utilized a Weighted Overlay Analysis, which is one of the subjective model derived from Multi-Criteria Decision Support System (MCDA), to assess flood hazards in the Auranga watershed, India. Six key flood-inducing factors were selected, including topographic data such as elevation, slope, river distance, and flow length derived from remote sensing data of Digital Elevation Model and classified Land use/Land cover data, along with hydro-meteorological data of precipitation. Each dataset was standardized to a common scale to facilitate comparison and integration. Weights were assigned to the layers like elevation, slope, river distance, flow length, Land use/Land cover, and precipitation according to their significance in contributing to flood risk. These weighted layers were then combined using GIS tools like ArcGIS, resulting in a composite map that delineates areas with varying flood hazard zones. The final flood hazard map identified that approximately 914 sq. km (60.0%) of the study area was at high to very high flood risk, particularly in regions close to rivers, while around 97 sq. km (6.4%) exhibited very low flood hazard. The GIS-Weighted Overlay Analysis method proved effective in flood hazard zone mapping, especially when incorporating a greater number of parameters. This approach is widely recognized in environmental planning and risk assessment, especially in areas vulnerable to natural disasters like floods. |
Keywords | Flood Hazard, Geographic Information System, Weighted Overlay Analysis, Digital Elevation Model, Euclidian Distance |
Field | Engineering |
Published In | Volume 6, Issue 5, September-October 2024 |
Published On | 2024-09-24 |
Cite This | A Study on Flood Hazard Zonation Mapping Based on GIS-driven Approach using Remote Sensing Data and Weighted Overlay Analysis (Woa) Model - Kamuju.narasayya - IJFMR Volume 6, Issue 5, September-October 2024. DOI 10.36948/ijfmr.2024.v06i05.27842 |
DOI | https://doi.org/10.36948/ijfmr.2024.v06i05.27842 |
Short DOI | https://doi.org/g5kntt |
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E-ISSN 2582-2160
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