Surface Runoff in the Basin of Al-Khabour Al-Kabeer Dam (Southern Hassakah) in Syria
Abstract
Al-Khabour Al-Kabeer Dam (Southern Hassakah) is the biggest dam in Al-Khabour basin, where the drying up of Ras Al-Ain springs has limited the surface water resources in Al-Khabour Basin to surface runoff resulting from rainfall. The research aims to study the surface runoff in the basin of Al-Khabour Al-Kabeer Dam (Southern Hassakah) in Syria.
The Soil Conservation Service method (SCS-CN) and Geographic Information System (GIS) were used to study the possibility of the surface runoff in the dam basin which has an area of (1663.67 km2). The results showed that there is a big possibility for surface runoff in the study area which got a high curve number (CN=87.97) and this is consistent with both of the land use and the soil texture in the study area.
The research results were also calibrated by choosing a time period in which rainfall occurred that caused surface runoff, where the accuracy percentage between the observe runoff and the simulated runoff was 86% and this is a good percentage that proves the validity of the research results.