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Geoscientific Instrumentation, Methods and Data Systems An interactive open-access journal of the European Geosciences Union
doi:10.5194/gi-2017-28
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
19 Apr 2017
Review status
This discussion paper is under review for the journal Geoscientific Instrumentation, Methods and Data Systems (GI).
Understanding of Morphometric Features for an Adequate Water Resources Management in Arid Environments
Mohamed Elhag1, Hanaa Galal2,3, and Haneen Alsubaie2 1Department of Hydrology and Water Resources Management, Faculty of Meteorology, Environment & Arid Land Agriculture, King Abdulaziz University Jeddah, 21589. Saudi Arabia
2Biological Sciences Department, Faculty of Science, King Abdulaziz University, Jeddah 21589. Saudi Arabia
3Botany Department, Faculty of Science, Assiut University, Asyut, Egypt
Abstract. The current research investigates the significance of remote sensing data to evaluate the fluviological features and to identify the morphometric parameters of Yalamlam basin, West of Saudi Arabia. Hydrological characteristics, such as topographic parameters, drainage attributes, and the land use, land cover pattern were evaluated for the water resource management of the watershed area. Under GIS environment, the delineation of the watershed and the calculation of morphometric characteristics using ASTER GGDEM was undertaken. The drainage density of the basin has been estimated to be very high which indicates that the watershed possesses high permeable soils and low to medium relief (Hadley and Schumn 1961). The stream order of the area ranges from first to sixth order showing semi dendritic and radial drainage pattern that indicates the heterogeneity in textural characteristics and is influenced by structural characteristics in the study area. The bifurcation ratio (Rb) of the basin ranges from 2.0 to 4.42 and the mean bifurcation ratio is 3.84 of the entire study area that signifies that the drainage pattern of the entire basin is much more controlled by the lithological and geological structure. The elongation ratio is 0.14, which indicates that the shape of the basin belongs to the narrow and elongated shape. Land use and land cover map were generated by using Landsat-8 image acquired on August 10th 2015 was classified to distinguish mainly the alluvial deposit from the mountainous rock. The study reveals that hydrological evaluation using ASTER GGDEM is more precise and applied with compared to other techniques at the watershed scale.

Citation: Elhag, M., Galal, H., and Alsubaie, H.: Understanding of Morphometric Features for an Adequate Water Resources Management in Arid Environments, Geosci. Instrum. Method. Data Syst. Discuss., doi:10.5194/gi-2017-28, in review, 2017.
Mohamed Elhag et al.
Mohamed Elhag et al.
Mohamed Elhag et al.

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Short summary
this article focus on the morphometric features and its role in water resources management at the basin scale. the estimation of the features requires an adequate understanding of the DEM feature extractions. the findings of the current study shall help the decision makers to improve the adopted water resources management strategies in similar geographic locations.
this article focus on the morphometric features and its role in water resources management at...
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