Use Digital Elevation Model In Extracting Drainage Network AndMeasurements Hydroformetric Of Al-Uthaim Basin

Abstract

This study aimed to build data base of the morphometric properties in the
Udhaim basin , through analyzing the digital elevation model ( DEM ) by using a
model in a geographical information systems programs , which integrated together
in order to obtain the morphometric variances & measurements. This is done to
understand its hydrologic significances & consequently understanding the water
movement on the surface of the base. The study depended on the data of the digital
elevation model accurately 30 m while the results gave a good matching with the
Satellite images. Moreover, the study shows that the form of the catchment's areas is
closed to the triangle while the main basin does not close to that shape, so that it
characterized by systematic flow increased in the spring time .Also it is noticed that
there is uniformity in the form of the catchments areas due to the similarity in the
geomorphic processes.