عنوان المقال عربي
تقدير حجم الجريان السطحي لحوض وادي الغداري بطريقة (CN-SCS).
Abstract
Al-Ghadari Basin is one of the hydrologically unexamined seasonal valleys, with an area of about (573.2 km2). It is located within the administrative boundaries of Al-Muthanna Governorate. The research aims to estimate the basin runoff using a (SCS-CN) technique developed by the US Soil Conservation Department, which deals with several variables, including land cover, soil quality and the amount of precipitation. The study relied on the highest rainfall intensity that occurred for the rainy season (2018-2019). The daily precipitation of Al-Samawah climate station, which was a total precipitation of (60) mm, in March (3/31/2019). The basin was divided into four secondary basins (the main Ghadari basin, the southern basin, the western basin, and the eastern basin), depending on the river beds, to reveal the most nutritious basins of the main basin. The soil was classified according to the types of hydrological soils determined by the (SCS-CN) technique. The soil moisture was taken into account as having an important and influential role in the volume of surface runoff, as it was determined in the study the second level of soil moisture represented by the state of dry soil (ACI). The study has found that the (cn) values of the basins varied to (48), which includes areas affected by the density of linear structures, which gave it a characteristic. High leakage of water, at the expense of surface runoff, and areas where the values of (cn) rise to (94), in which the percentage of surface runoff increases significantly, as they are saturated with water and covered with quadruple time formations as they are coherent and muddy, which reduces their porosity. Sovereignty in Al-Ghadari basin, the value is (67), and in the Western Basin, the value was (67). As for the Southern Basin, the value was (60), while the Eastern Basin, which is the least studied basin in size, was dominated by the value of (60)
Keywords
land cover classes., spatial modeling, runoff volume, land cover classes
Recommended Citation
Al-Zarfi, Nadia Qasim Mohammed and Al-Taie, Adnan Awda Fleih
(2025)
"Estimation of the surface runoff volume of Wadi Al -Ghadari basin by (CN-SCS) method.,"
Uruk for Humanities: Vol. 14:
Iss.
4, Article 30.
Available at:
https://muthuruk.mu.edu.iq/journal/vol14/iss4/30
