Building a mapping model of water erosion risks for the Wadi Diwana Basin using the global soil erosion equation (RUSLE).

Abstract

The Current Study deals with the assessment of erosion processes in the Wadi Diwana Basin . The basin is located administratively within the Sulaymaniyah Governorate northeastern of Iraq . geographically , it is bounded between latitudes 35 " 26.00 " - 35 ° 43′00 ″ N and longitude 45 14'00 " -45 " 43'00 " E. the basin extend on an area of 703.9 km2 . Geomorphologically , the basin is located within the high folds . The research aims to www.hummer identify the areas affected by water erosion using the RUSLE equation . The results show five levels of erosion in the study area i.e. , high erosion reach to 637.67 tons / ha / year . While the two types of erosion ( high and very high) occupy an area of ( 110.54 ) km2 , and this indicate a hazard erosion processes in the study area . The research recommended to conducting future studies using Gavrilovik's equation (EPM) for assessment of erosion , and instruct the farmers to use appropriate plowing methods to reduce the soil erosion .