@article {10.3844/ajessp.2025.1.11,
article_type = {journal},
title = {Evaluating the Impact of Topography on Flooding in Owerri North, Imo State, Nigeria Using GIS and Remote Sensing Techniques},
author = {Iro, Sylvanus Ibeabuchi},
volume = {21},
number = {1},
year = {2025},
month = {Jan},
pages = {1-11},
doi = {10.3844/ajessp.2025.1.11},
url = {https://thescipub.com/abstract/ajessp.2025.1.11},
abstract = {The aim of this study is to analyze the topographical contribution to floods in Owerri, North Imo State, Nigeria. Research was carried out to ascertain whether topographical elements played a role in the flooding in specific areas of Owerri North. As a result, very little research has looked at the effects of topography on flooding. Thus, there is a barrier to the advancement of knowledge regarding topography and flooding. Using remote sensing techniques, the Digital Elevation Model (DEM) is a low-cost data source for the research investigation. The raster's contour, curvature, slope aspect, and ability to flood Owerri North are all modeled using the SRTM data. Floods are mostly caused by the gradient of the slope in reaction to high runoff. The places of floods that are being examined are at the base of slopes that range from 0-200 and 21-400. The curvature of the slope in the study area indicates that low values of -1 (´106) for plan curvature represent convexity, while high values of 1 (´106) indicate concavity. This study suggests that topographical factors contribute to flooding in several areas of Owerri North, including the Amakohia and Egbu flood zones. As a result, structures should be built alongside contour lines rather than across them and drainage systems should be installed to channel surplus rainwater into adjacent rivers.},
journal = {American Journal of Environmental Sciences},
publisher = {Science Publications}
}