Urban Flood Hazard Assessment and Future Scenario Modelling in Nandigama Using Integrated Hydrological–Hydrodynamic and Climate–Land Use Forecasting
Author(s): Dr.Poli Sainath Reddy
Authors Affiliations:
Lecturer in Civil Engineering, Department of Civil Engineering, E.S.C Government Polytechnic Nandyal, Nandyal, Department of Technical Education, Andhra Pradesh, India-518501
DOIs:10.2015/IJIRMF/202511030 | Paper ID: IJIRMF202511030Abstract: hydrodynamic modelling (HEC-RAS), climate downscaling, and Markov Chain–based land-use forecasting, present and future flood conditions were evaluated for the years 2030 and 2040. Downscaled and bias-corrected rainfall projections from Global Climate Models (GCMs), along with predicted land-use transitions, were incorporated to simulate future runoff and inundation patterns. Results indicate a progressive increase in peak discharge, reduced time to peak, and expanding inundation extent due to rapid urbanization and changing rainfall characteristics. Vulnerable regions, including Adiviravulapadu, Gollamudi, Jonnalagadda, Kanchela, and Pallagiri, were identified as high-risk zones. The findings highlight the need for improved drainage planning, green infrastructure, and climate-adaptive urban development to mitigate future flood risks.
Dr.Poli Sainath Reddy (2025); Urban Flood Hazard Assessment and Future Scenario Modelling in Nandigama Using Integrated Hydrological–Hydrodynamic and Climate–Land Use Forecasting, International Journal for Innovative Research in Multidisciplinary Field, ISSN(O): 2455-0620, Vol-11, Issue-11, Pp.182-190. Available on – https://www.ijirmf.com/