تحليل الخصائص المورفومترية لحوض وادي اليتم باستخدام نموذج التضرس الرقمي

Abstract EN

This study has used digital elevation model to assess the morphometric parameters of Wadi AlYotum basin, to represent in real.

as well as to create a Geo database which can be utilized in urban planning, flash flood forecasting.

In addition, the study obtained the DEM with spatial resolution 30 m, along with 1-100000 topographic maps, and 1-50000 geological map, in order to build the drainage network system map which was classified for their stream orders based on Strahler method, also the study used digital processes by GIS.

The results showed that Wadi Alyotum covers an area has 7th order for the stream, also the total basin area was 4491 km2, the drainage segments 97548 streams, which varied from order to another, the basin draining density was calculated to be 0.87 km/km2, and the topographic texture ratio was 22% which indicates that the basin has asoft topographic texture.

The value of shape factor is 0.54 which indicates that the basin shape is close to elongated oval shape.