Application of habitat modification score and fluvial functioning index in discussion of eco-hydrological behavior and flood risk zonation of Himalayan foothill rivers, West Bengal, India

2021 ◽  
Author(s):  
Puja Banerjee ◽  
Mery Biswas
Keyword(s):  
Flood Risk ◽  
West Bengal ◽  
Habitat Modification ◽  
Risk Zonation

Flood Risk Zonation Using GIS Techniques: District Charsadda, 2010 Floods Pakistan.

2017 ◽  
Vol 01 (01) ◽  
Author(s):  
Farish S ◽  
Munawar S ◽  
Siddiqua A ◽  
Alam N ◽  
Alam M
Keyword(s):  
Flood Risk ◽  
Gis Techniques ◽  
Risk Zonation

scholarly journals Incorporating river morphological changes to flood risk assessment: uncertainties, methodology and application

2009 ◽  
Vol 9 (3) ◽  
pp. 789-799 ◽  
Author(s):  
C. Neuhold ◽  
P. Stanzel ◽  
H. P. Nachtnebel
Keyword(s):  
Risk Assessment ◽  
Flood Risk ◽  
Morphological Changes ◽  
Flood Hazard ◽  
Methodological Approach ◽  
Assessment Procedure ◽  
Flood Risk Assessment ◽  
River Bed ◽  
Risk Zonation ◽  
Zonation Maps

Abstract. Risk zonation maps are mostly derived from design floods which propagate through the study area. The respective delineation of inundated flood plains is a fundamental input for the flood risk assessment of exposed objects. It is implicitly assumed that the river morphology will not vary, even though it is obvious that the river bed elevation can quickly and drastically change during flood events. The objectives of this study were to integrate the river bed dynamics into the flood risk assessment procedure and to quantify associated uncertainties. The proposed concept was applied to the River Ill in the Western Austrian Alps. In total, 138 flood and associated sediment transport scenarios were considered, simulated and illustrated for the main river stem. The calculated morphological changes of the river bed at the moment of peak flow provided a basis to estimate the variability of possible water surface levels and inundation lines which should be incorporated into flood hazard assessment. In the context of vulnerability assessment an advanced methodological approach to assess flood risk based on damage probability functions is described.

scholarly journals FLOOD RISK ZONATION USING A MULTI-CRITERIA SPATIAL GROUP FUZZY-AHP DECISION MAKING AND FUZZY OVERLAY ANALYSIS

2019 ◽  
Vol XLII-4/W18 ◽  
pp. 455-460
Author(s):  
M. Hasanloo ◽  
P. Pahlavani ◽  
B. Bigdeli
Keyword(s):  
Decision Making ◽  
Flood Risk ◽  
Fuzzy Ahp ◽  
Curve Number ◽  
Overlay Analysis ◽  
Topographic Wetness Index ◽  
Digital Elevation ◽  
Risk Zonation ◽  
Position Index ◽  
Elevation Model

Abstract. In this study, a GIS based approach has been proposed for the flood risk zonation based on a multi-criteria spatial group fuzzy AHP decision making analysis and its integration with fuzzy overlay analysis. For this purpose, 10 layers affecting flood occurrence have been used including: the Digital Elevation Model (DEM), Slope, NDVI, Flow Accumulation (Flow Ac.), HOFD, VOFD, Topographic Position Index (TPI), Topographic Wetness Index (TWI), Curve Number (CN), Modified Fournier Index. Each layer was classified into 5 sub-classes and their preference at its layer was weighted by a group of experts using fuzzy analytical hierarchy processes (GFAHP) method. Finally, the risk map of the studied area with the weight of experts and fuzzy overlay method was product and divided into five categories.

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