مخاطر التعرية المائية في حوض نهر الزاب الصغير

الملخص EN

The study examined the study of the risks of river erosion in the basin of the Lesser Zab River, one of the tributaries of the Tigris River, which is located in the northeastern part of Iraq, by applying a cartographic modeling method for spatial data and by using geographic information systems technology, with the aim of assessing the spatial variation of the risks of water erosion in the river basin Lesser Zab, as the layers of natural factors affecting the occurrence of water erosion were collected for the purpose of producing a map of the risks of water erosion in the basin.

The study found that there are four levels of water erosion risk in the Lesser Zab river basin, of which are low-risk areas that constitute (14.96% ) of the total area of the river basin, medium-risk areas and constitute the highest percentage (63.17% ), dangerous areas and constitute (19.36% ) And very dangerous (1.48% ), while the non-dangerous areas accounted for (1.02% ) of the area of the research area.

The nature of the exposed rocks in the basin, and its terrain and morphological characteristics, reflected a role in determining the effectiveness of water erosion in the Lesser Zab river basin.