أثر التعرية في تكوين فيضات الهضبة الغربية في محافظة النجف الأشرف

Abstract EN

The study deals with the effect of winds and water in forming the floods of the western hill in Al-Najaf Alashraf.

The number of floods of the study area reached to (48) floods, that covered 271, 908679 KM with a ratio of 1% , from the total of the study area, which in total covers 25860274602 KM, where the most of them are located in the middle of the study area and reachingto the borders of SaudiArabia rather than exciting at the end of the floods or the convergence of some rivers that pour in a higher river (map 1).

The water income reached (0, 611650111) billion meters, while in 2013 which considered to be a wet year the water income reached to (1, 026961743) billion meters, where the erosion of winds was reported to be (1259)cm/m/year which means that the floods of the study area need (794) years to decrease in one cubic meter.

Where the water erosion was reached (5, 4487)cm/m/year which means that the floods decrease one meter for each (183530) years, this means that the floods of the study area have been formed due to many operations including the winds and water erosion but the winds erosion plays the crucial role here