Rainfall soil erosion and drainage channel silting up on the plain along the downstream of the Yellow River

There are more than ten large drainage channels in the irrigated areas of. the downstream of the Yellow River. Since restoration of Yellow River irrigation in 1956, with the development of Yellow River irrigated areas and large amount of Yellow River sedimentation drained into the drainage channels, and together with rainfall erosion, the drainage channel systems are seriously silted up, which directly affects local agricultural production. With the development of agriculture and industry production, it is very important to deal with drainage system silting up for systematic harnessment of the irrigated areas of the downstream Yellow River and for development of agriculture and industry production. Therefore, starting with balance analysis between water resources and sedimentation of the Yellow River irrigated areas, the mathematical models have been built for computation of Yellow River irrigation sediment recession and rainfall soil erosion. Based on the recent data of Yellow River flow and sediment, the silting up in channels and regional irrigation sediment distribution are calculated quantitatively, which may play active role for the development of agriculture and industry in the plain region of the Downstream Yellow River.