Application of MNDWI index for flood damage area calculation in Lam river basin using google earth engine platform

Abstract

Floods, as natural occurrences, often result in significant impacts on human life. The construction of flood maps plays a crucial role in devising appropriate strategies to mitigate the adverse effects of floods. In recent decades, there has been notable attention towards flood mapping methods utilizing remote sensing images. This paper introduces a methodology for generating an inundation map for rainy season and river network. To achieve this objective, we investigated the use of the recently developed Modified Normalized Difference Water Index (MNDWI) within the Google Earth Engine platform for extracting surface water. The study yielded flood maps extracted with considerable precision, facilitating the calculation and analysis of flood extents within the study area.