Morphometrical Analysis and Peak Runoff Estimation for the Sub-Lower Niger River Basin, Nigeria

Autor: Salami Adebayo Wahab, Amoo Oseni Taiwo, Adeyemo Joshiah Adetayo, Mohammed Abdulrasaq Apalando, Adeogun Adeniyi Ganiyu
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Slovak Journal of Civil Engineering, Vol 24, Iss 1, Pp 6-16 (2016)
Druh dokumentu: article
ISSN: 1210-3896
1338-3973
DOI: 10.1515/sjce-2016-0002
Popis: This study utilized Spatial Information Technology (SIT) such as Remote Sensing (RS), a Geographical Information System (GIS), the Global Positioning System (GPS) and a high-resolution Digital Elevation Model (DEM) for a morphometrical analysis of five sub-basins within the Lower Niger River Basin, Nigeria. Morpho-metrical parameters, such as the total relief, relative relief, relief ratio, ruggedness number, texture ratio, elongation ratio, circularity ratio, form factor ratio, drainage density, stream frequency, sinuosity factor and bifurcation ratio, have been computed and analyzed. The study revealed that the contribution of the morphometric parameters to flooding suggest catchment No. 1 has the least concentration time and the highest runoff depth. Catchment No. 4 has the highest circularity ratio (0.35) as the most hazardous site where floods could reach a great volume over a small area.
Databáze: Directory of Open Access Journals