Flash Flood Susceptibility Assessment and Zonation by Integrating Analytic Hierarchy Process and Frequency Ratio Model with Diverse Spatial Data

Flash floods are the most dangerous kinds of because they combine destructive power a flood with incredible speed. They occur when heavy rainfall exceeds ability ground to absorb it. The main aim this study is generate flash maps using Analytical Hierarchy Process (AHP) and Frequency Ratio (FR) models in river’s floodplain between Jhelum River Chenab rivers. A total eight flood-causative physical parameters considered for study. Six based on remote sensing images Advanced Land Observation Satellite (ALOS), Digital Elevation Model (DEM), Sentinel-2 Satellite, which include slope, elevation, distance from stream, drainage density, flow accumulation, land use/land cover (LULC), respectively. other two soil geology, consist different rock formations, In case AHP, each criteria allotted an estimated weight according its significant importance occurrence floods. end, all were integrated weighted overlay analysis influence value density was given highest weight. shows that 2500 m river has values FR ranging 0.54, 0.56, 1.21, 1.26, 0.48, output zones categorized into very low, moderate, high, high risk, covering 7354, 5147, 3665, 2592, 1343 km2, Finally, results show areas or 6.68% area. Mangla, Marala, Trimmu valleys identified as high-risk area, have been damaged drastically many times by It provides policy guidelines risk managers, emergency disaster response services, urban infrastructure planners, hydrologists, climate scientists.