Regional Flood Hazard assessment at the Sub-basin Scale Using Remote Sensing & Fuzzy logic

Document Type : Research Article


1 University of Tabriz

2 Head of the Faculty of Planning and Environmental Sciences, Tabriz University, Tabriz, Iran.

3 Department of Climatology, Faculty of Planning and Environmental Sciences, Tabriz University, Tabriz, Iran


Flood is among the most important environmental hazards, broadly threatening human societies and their assets. In this research, by integrating the Rational model to estimate peak runoff into Marand basin flood hazard on a sub-basin scale, assessments are accomplished using remote sensing and GIS. After determining the runoff coefficient land cover/use layers were taken from satellite images of the Sentinel 2A, and the slope map was derived from the ASTER DEM 30m and soil hydrological groups, using the specified amount of rainfall hamely intensity in mode of 1-hour peak runoff was calculated. Using linear membership function in fuzzy logic model, integrating prepared this peak runoff and elevation lines between zero and one were fuzzy and then by applying multiple weight tangles to each of these two layers we collected their results, and the flood hazards distribution map was prepared. With the implementation of prepared risk map in fifth grade the classes include very low-risk, low risk, medium, high and very high risk with the results of GIS partnership or PGIS and entering this information into the confusion matrix. The accuracy of prepared maps was determined to be about 87.83%.


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Volume 5, Issue 3
October 2018
Pages 829-841
  • Receive Date: 23 October 2017
  • Revise Date: 09 April 2018
  • Accept Date: 03 April 2018
  • First Publish Date: 23 September 2018