The effect of erosion on the formation of the floods of the western plateau in the province of Najaf

Abstract

The western plateau of the province of Najaf, with a number of (48) floods, with an area estimated at (271,908679) km2, or (1%) of the total area of the study area, amounting to (25860) km2, most of which are located from the middle of the region to the border with the Kingdom of Saudi Arabia. In addition, it is located at the ends of valleys or the confluence of river beds that flow into a higher rank (Map - 1), and the volume of water revenue reached (0.611650111) billion m3, while during the year 2013 being a wet year, the water revenue amounted to (1.026961743 (Billion m3, wind erosion amounted to (1259) cm3/m2/year. This means that the floods of the study area need an estimated period of (794) years for one cubic meter to decrease, while water erosion amounted to (5.4487) cm3/m2/year, i.e. Floods decrease by one meter per (183,530) years. This means that the floods of the study area were formed as a result of several processes, including water and wind erosion, and that wind erosion plays a major role.