Estimating the surface runoff volume of the Wadi al-Hajiya basin in Anbar Governorate using the (SCS-CN) method.

Document Type : Original Article

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Baghdad

10.21608/aafu.2024.258116.1408

Abstract

The research aims to identify the hydrological characteristics of the Wadi al-Hajiya basin, with an area of ​​(1433) km2, located on the western plateau of Iraq, specifically in Anbar Governorate. The American Soil Conservation Model (SCS-CN) was used, which is one of the most important hydrological modeling techniques, which was designed for knowledge and simulation. The process of rainwater flow into water basins using geographic information systems and remote sensing techniques by relying on the satellite visualization of the satellite (Land sat 8) for the year 2023 and processing it using the (Arc map) program, through which the results of the (CN) values ​​​​were reached. (6), as well as the equation for water retention (S) after the start of flow, the initial extraction factor (Ia), the depth of surface runoff, and the volume of surface runoff, as the rate of (CN) in the Wadi Al-Hajiya basin reached (77), while the average value of (S) reached (77.76). The average value of (Ia) reached (15.5), and the average value of (Q) reached (201.9), while the total volume of surface runoff reached (1367.8) million/m3.
Keywords: surface runoff - land use - SCS-SC mo

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History

  • Receive Date: 23 December 2023
  • Accept Date: 18 January 2024

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