استخدام نظم المعلومات الجغرافية في دراسة المراتب النهرية لوادي حوران غرب العراق

الملخص EN

The research aims to use geographic information systems (GIS) in studying the levels of the river network of the Basin of Houran valley in western Iraq through relying on the digital elevation model (DEM) through which a database can be established to identify the number of stream orders and their lengths and to know some of the surveying, longitudinal, Formal and terrain characteristics of the basin.

A group of results were reached on the study area basin, including determining the total area of the basin, which amounted to (11485) km2, and the total of the waterways that were extracted by relying on the digital elevation model (1462) stream orders and these were at six levels from the first to the sixth, the basin coefficient was (0.091).

The highest point in the basin of Houran valley was (900) meters high and the lowest point (100) meters, and the basin in the study area tends to elongate more than to rotation, as the elongation ratio reached (0.340) while the rotation ratio reached (0.195).

And it turns out that the river drainage pattern in the basin of Houran valley is of tree and parallel patterns.