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VOL. 10, ISSUE 1 (2024)
Flood risk mapping of Khagrachhari district, Bangladesh: A GIS based approach
Authors
Muhammad Fahim Akhtab, Muhtasim Shahriar Mostafa, Saifur Rahman Ruman
Abstract
One of the most destructive natural disasters
that harm both natural and man-made features on the surface of the world are
floods. Because of geographical location Bangladesh has faced flood every year.
Khagrachari District, which is in the south-eastern region of Bangladesh, is
mainly a hilly region, is characterized by steep slope, regular monsoon
rainfall and devastating flash flood. Slope, proximity (distance to river),
soil type, drainage density, population density as well as low adaptive
capacity in the district increase the flood risk. The primary goal of the study
is to evaluate the flood risk in the Khagrachari District using mainly
secondary data with the help of remote sensing and geographic information
system (GIS) techniques. This was accomplished by weighing the “vulnerability”
and “hazard” elements that contribute to flooding individually at various
degree levels. Using a raster calculator, the final vulnerability and hazard
index was multiplied to create the risk map. Dighinala and Khagrachari Sadar
were found to be high risk of flooding. The rest of the Upazilas were found
very low to moderate risk. Future land use and development activity should be
done to reduce the risk of flooding using flood risk maps.
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Pages:30-36
How to cite this article:
Muhammad Fahim Akhtab, Muhtasim Shahriar Mostafa, Saifur Rahman Ruman "Flood risk mapping of Khagrachhari district, Bangladesh: A GIS based approach". International Journal of Research in Advanced Engineering and Technology, Vol 10, Issue 1, 2024, Pages 30-36
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