THE MORPHOMETRIC ANALYSIS OF WADI AWARDH BASIN (EAST OF SHABWA GOVERNORATE-YEMEN)

Abstract

The study aims to use geographic information systems technology to reveal the morphometric characteristics of the Awardh Wadi Basin represented by the spatial and morphological characteristics, the topography, the characteristics of the water drainage network, as well as the drainage patterns to build a digital geographic information base for the basin. The study relied on the analysis of the digital elevation model (DEM), and the use of the Arcmap 10.8 program in preparing maps of drainage networks, determining the ranks of waterways, calculating morphometric variables, and making measurements. The analytical approach was followed in terms of studying the working environment of the valleys of the study area, and the quantitative approach aimed at analyzing the geomorphological processes in order to evaluate the natural resources. A map of the river network was produced, which was classified according to the Streller method into its river levels, and a study of the natural factors affecting the basin, especially the rocky nature, climate and topographical characteristics. The total area of the basin (447.077 km²), and reached five river beds and these sewers vary in numbers and lengths according to their ranks and lengths and the total number of riverbeds (666). The terrain of the Wadi Awardh basin varied due to the variability in their formation and starch processes, as well as their environmental factors.