Flood Hazard Mapping of Kogi State, Nigeria: The Case of September 2022
Sr No:
Page No:
101-106
Language:
English
Authors:
Babalola Adewara, Olasunkanmi Olapeju*
Received:
2025-02-24
Accepted:
2025-03-11
Published Date:
2025-03-14
Abstract:
Flooding, exacerbated by climate change, continues to devastate Nigerian
communities, particularly in Kogi State, Nigeria. The lack of flood-control measures, such as
reservoirs, and encroachment on flood plains have worsened the impacts. This study aims to
mitigate these effects by creating a flood hazard map for Kogi State. The objectives of the study
are to identify flood-prone areas; assess settlement vulnerability, and produce a vulnerability
assessment map. Eight spatial datasets (rainfall, soil, land use, DEM, NDVI, TWI, and drainage
density) were integrated using Spatial Multi-Criteria Decision Analysis (SMCDA) and
Analytical Hierarchical Process (AHP). The weighted overlay of reclassified raster datasets in
ArcGIS produced a hazard map. Findings show that the intense rainfall, low relief, and low
vegetation index (NDVI) characterizing the study are risk factors for flood ability.
Keywords:
Flooding; Kogi; Mapping; September 2022.