FLOOD VULNERABILITY MAPPING OF RIVER NGADDA USING GEOSPATIAL AND REMOTE SENSING TECHNIQUES ......

Over the years, flood disasters have posed a threat to animal, plant, land, human, and non-human resources. This has raised worries about the necessity to explore various flood-prone areas before making decisions. Understanding flood-prone zones is critical to supporting all stages of disaster management, including early warning and planning, as a preventative strategy against the loss of lives, property, and livelihood that could result from a flood disaster. Within the Maiduguri metropolis, the River Ngadda is a prominent river. Its plains and rivers are notable for a variety of activities and resources. When the river overflows its banks, it may cause destruction to nearby regions, as well as the loss of lives and property. This project will look into flood vulnerability along the Ngadda River, identifying at-risk coasts, plains, and banks. The study uses ground truth data, as well as the Aster DEM (30m) and Sentinel 2 (10m) Satellite Imagery datasets, to assess the undulating nature of the study area, identify flood-prone locations, and analyse the flood plain using Geospatial and Remote Sensing techniques. A supervised classification was used to determine the Land Use and Landcover (LULC) within the study area, and locations of various flood risk were also identified. The river plains, flood vulnerable impact on LULC was presented in this study. It was discovered that 13.17 hectares of built-up areas fall within the very high flood risk zone, that over sixty-six percent (66%) of the study area appears to fall within the moderate to very high vulnerable flood risk zone, and that the flood plains, LULC, risk and hazard map of the study area was produced. This finding could help River Ngadda and its environs with early warning, planning, and decision-making.

Please see the link :- https://www.ikprress.org/index.php/JOGEE/article/view/7453