Urban waterlogging risk as an undervalued environmental challenge: An Integrated MCDA-GIS based modeling approach

• DOI: 10.1016/j.envc.2021.100194
• Publication Date: 2021-06-27T09:16:46Z
• Authors: Subham Roy; Arghadeep Bose; Nimai Singha; Debanjan Basak; Indrajit Roy Chow...
• Keywords: Waterlogging (archaeology)

In the last few decades, rainfall-induced urban waterlogging has become a significant environmental barrier and acquired global prominence worldwide due to its frequent threat, which results in infrastructure damage economic loss. This study aims model identify hazard, vulnerability, risk zones unplanned city of Siliguri, 'Gateway North-east India', with help an integrated Analytical hierarchy process (AHP) GIS techniques. Due lack comprehensive database, systematic assessment Siliguri not yet been carried out. However, is seasonal phenomenon city, especially during monsoon seasons, when short-duration high-intensity rainfall cause inundation low-lying areas causing mayhem city. Therefore, this present study, primary field investigation was conducted prepare inventory map along seventeen other parameters, including spatial attribute data from secondary sources delineate map. Further, final distribution slums locations, revealing that larger proportion slum households are under high-risk zones. The suggest about 46% high very hazard zones, while 38% highly vulnerable waterlogging. reveals around 35% area susceptible threat waterlogging, mostly concentrated central part center. Besides, consistency assessed by curve (AUC), gives accuracy 0.782 or 78.2%. study's overall strategy may be used for planning mitigation efforts reduce future incidents all world.