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Erosion and Sedimentation Processes in Irrigation

by Thomas J. Trout, (M.ASCE), USDA, Kimberley, ID, USA,
W. H. Neibling, USDA, Kimberley, ID, USA,



Document Type: Proceeding Paper

Part of: Water Forum '86: World Water Issues in Evolution

Abstract:

Soil erosion occurs when fluid in motion detaches and transports soil particles. Sedimentation occurs when the fluid transport capacity decreases. Both the hydraulic forces of moving water and soil strength and particle size are factors. Under furrow irrigation, the shear of the channel flow against the soil provides the detachment force and is a primary factor in channel transport capacity. With sprinkler irrigation, water drop energy detaches particles, some of which are transported by shallow interrill flow to rills and gulleys.

Subject Headings: Sediment transport | Soil strength | Sprinkler irrigation | Soil water | Sediment | Particle size distribution | Irrigation

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