FLOOD HAZARD MAPPING OF LOWER DAMANGANGA RIVER BASIN USING MULTI- CRITERIA ANALYSIS AND GEOINFORMATICS APPROACH

Kapadia, Cheshta; Patel, Khushboo; Akbari, Jay; Rathod, Namrata; Mehta, Darshan; Waikhom, Sahita

LARHYSS Journal
Volume 20, Numéro 3, Pages 119-133
2023-12-25

Flood Hazard Mapping Of Lower Damanganga River Basin Using Multi- Criteria Analysis And Geoinformatics Approach

Authors : Kapadia Cheshta . Patel Khushboo . Akbari Jay . Rathod Namrata . Mehta Darshan . Waikhom Sahita .

Abstract

Flooding is one of the most damaging natural disasters that occur anywhere in the world. Flood hazard mapping is essential to determining flood risk zone areas. The present study used the analytical hierarchical process (AHP) and geographical information system (GIS) for flood hazard mapping of the lower Damanganga River basin from the Madhuban Dam to the Arabian Sea. The major factors affecting floods are hydrological characteristics, which are the combination of meteorological and basin characteristics. A total of seven parameters were selected, and a thematic map for each parameter was prepared. AHP was used to find the weights of the selected parameters using a questionnaire survey. Thematic maps were then integrated with weighted parameters obtained to create the flood hazard map. The abovementioned study's findings show that approximately 32% of the total area in the lower Damanganga River basin is prone to high floods, whereas 33% of the total area is prone to moderate floods. This study will be helpful to policymakers in reducing the risk of flooding