Abdulsalam Ali Ahmed Nasser (1)* and Mohammed Hezam Saeed (2)
(1). Department of Geography, Faculty of Arts, Sana,a University, Yemen.
(2). Renewable Natural Resources Research Center in the Agricultural Research & Extension Authority, Dhamar, Yemen.
(*Corresponding author: Dr.Abdulsalam Ali Ahmed Nasser, Email : Shkhbaslm30@gmail.com – Tel_ 00967770868500).
Received:25/06/2024 Accepted:11/12/2024
Abstract:
This study was carried out in the Al-Sahool Basin – Ibb Governorate 2023 with the aim of studying the morphometric characteristics of the basin, which is one of the important basins with high rainfall and its area is 433.5 km2. The importance of the study is to find solutions to the water problem and changing the basin’s streams and tributaries as a result of the amount of rain, roads construction and building in those water outfalls, through knowing and calculating all the morphometric characteristics of the basin. The study relied on equations, statistical evidence, remote sensing techniques, and geographic information systems (GIS). The regression data was analyzed, the basin boundaries were determined, and the water network courses were calculated from the digital elevation model (DEM). The results of the study showed that the shape of the basin takes a triangular shape, which increases the speed and flow of surface runoff. The number of river levels reached six levels and the member of waterways reached 1000 streams with a length of 881.5km. The topographic texture of the basin reached 11.2 streams/km and that it has a soft texture that increases the amount of water flow. The slope ranged from 0 to more than 45degrees in a general direction from east to west.
Keywords: Morphometric coefficients, Water network, Discharge density, Topographical characteristics.
Full paper in Arabic: pdf