Olapeju, O.O and ADEWARA, M.B (2022) Flood Hazard Mapping of Kogi State. In: Land Degradation, Ecosystem Health and Climate Change, University of Lagos. (Submitted)
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Abstract
Climate change, manifesting in the form of flood, continue to ravage Nigerian settlements. The impacts of flood have particularly become exacerbated in settlements of Kogi state, where developments have increasingly encroached on flood plains and reservoirs do not exist to receive the release of excess water from the Lagdo dam in Cameroun. One way these impacts would have been mitigated is with the profiling of the flood plains for the development of flood hazard maps. This paper aims at producing a hazard map for Kogi state. The objectives are to identify areas liable to flooding, assess the vulnerability of settlements within the State, and ultimately produce a vulnerability assessment map. Eight (8) spatial data such as such as Rainfall, Soil, Land Use Land Cover (LULC), Digital Elevation Model (DEM), Normalized Difference Vegetative Index (NDVI), Topographic wetness Index (TWI) and Drainage Density were integrated to identify areas liable to flooding in Kogi State. Spatial Multi-Criteria Decision Analysis (SMCDA) was carried out on the data using Analytical Hierarchical Process (AHP). These data sets where further reclassified and weighted overlay was carried out on the reclassed raster datasets in ArcGIS to produce Hazard map of the state. Findings, among others, showed that the study area is characterized by high rainfall waters, low elevation and low Normalized Difference Vegetative Index (NDVI) thus rendering it highly vulnerable to flood. Keywords: Flood Hazard, Geographic Information System (GIS), Hazards, Spatial Multi-Criteria Decision Analysis (SMCDA)
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Subjects: | A General Works > AS Academies and learned societies (General) |
| Divisions: | Faculty of Engineering, Science and Mathematics > School of Geography |
| Depositing User: | Unnamed user with email [email protected] |
| Date Deposited: | 01 Nov 2024 11:31 |
| Last Modified: | 01 Nov 2024 11:31 |
| URI: | http://eprints.federalpolyilaro.edu.ng/id/eprint/2386 |
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