Abstract

Abstract The rainfed region of northern Iraq experiences moderate to severe water erosion. The area is characterized by low intensity rainfall, so erosion characteristics in the region may differ from those of regions with high intensity rainfall. Data from two natural runoff plots in the region were used to derive preliminary rainfall-runoff and soil erosion relationships. Runoff was found to vary linearly with rainfall. Interrill or sheet erosion was the dominant erosion type on the plots. Soil loss varied exponentially with rainfall intensity and values of the exponent obtained were within the range observed in other rainfall regions. Average soil erodibility measured on each plot varied with plot surface conditions.

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