Assessing the Implication of Climate Change to Forecast Future Flood Using CMIP6 Climate Projections and HEC-RAS Modeling

Climate change has caused uncertainty in the hydrological pattern including weather change, precipitation fluctuations, and extreme temperature, thus triggering unforeseen natural tragedies such as hurricanes, flash flooding, heatwave more. Because of these unanticipated events occurring all around globe, study influence climate on alteration flooding patterns gained a lot attention. This research intends to provide an insight into how future projected streamflow will affect flooding-inundation extent by comparing floodplain using both historical simulated scenarios. For data, model Atmosphere/Ocean General Circulation Model (AOGCM) developed Coupled Intercomparison Project Phase 6 (CMIP6) is used, which illustrates that flood increasing considering models. Furthermore, comparison existing inundation map Federal Emergency Management Agency (FEMA) with generated data presents entire area maps, implying expansion compared FEMA needs be considered making emergency response plans. The effect from flow values, presented mathematically calculation percentage, infers watershed Rock River flood-prone area. goal insights importance forecasted for analysis offer necessary background needed strategize plan management.