“…This geospatial approach utilizes DEMs to simulate coastal surface water drainage [ 1 , 42 ]. Apart from other hydrological models that encapsulate the sudden changes in surface [ 43 ] or groundwater [ 44 ] due to extreme weather events, the bathtub model examines areas below the inundation level caused by a deluge source, such as the ocean or a river. The IPCC employs the bathtub technique as a foundational model for simulating potential inundation under different scenarios and levels of flooding [ 40 , 45 , 46 ].…”