Paper Details

This study assesses flood-prone areas in Gombe Local Government Area (LGA), Gombe State, Nigeria, using Geographic Information System (GIS) and Remote sensing techniques. The analysis focuses on key flood risk factors including elevation, soil composition, geology, stream density, and the Topographic Wetness Index (TWI). Findings indicate that low-lying areas (330- 380 meters) covering 11.19% of the area are highly susceptible to flooding due to limited drainage capacity, while higher elevations (>590 meters) spanning 18.34% of the area act as natural buffers against inundation. Areas dominated by Arenosols (66.93% of the area) exhibit increased flood risk, contrasting with regions with Nitisols (0.41% of the area) that are less prone to flooding. Geological formations such as Gombe Sandstone (37.89% of the area) and Basement Complex (3.30% of the area) significantly influence flood dynamics. Higher stream density areas (56.17% of the area) experience intensified surface runoff and localized flooding, impacting flood susceptibility. The Topographic Wetness Index (TWI) analysis highlights moisture conditions, with higher TWI values indicating elevated flood risk. These insight are crucial for forming flood risk management strategies and disaster resilience effort in Gombe LGA and similar regions. Recommendations include enhanced land-use planning, improve drainage infrastructure, and community-based preparedness initiatives to mitigate flood impacts and build resilience.