تقييم حجم التعرية المائية في أحواض شمال شرقي قضاء خانقين-ديالى

الملخص EN

The study area suffers from the occurrence of water erosions in most of its areas as a result of heavy rains and water resulting from them, which leads to the dredging of large amounts of soil and gravel deposits which are then transferred to streams and tributaries of valleys and to the flood plain at the mouths of basins in the region.

It is found out in the paper that there are types of water erosion which are prevailing in the region, including rain erosion (cover erosion, sluices erosion and gully erosion).

The degrees of gully erosion have been determined along with its effectiveness and its effect rate in the region in addition to the number of locations affected by each of these degrees, their areas and the proportion of each of them according to the (Bergsma) equation.

Through analysis, it appeared that gully erosion in the area falls within the grades (1, 2, 3, 4) according to the (Bergsma) classification which fall within the very light, light, medium and high.

Moreover, there were neither areas without erosion nor very high, severe and very severe erosion areas according to grades (0, 5, 6, 7).

Light erosion prevailed in most parts of the region, occupying a wide area of (1019) km2 which is (48% ).

of the total area in the region.