Modeling Erosion and Sedimentation in Irrigation

by Charles E. Brockway, Univ of Idaho, Kimberly, ID, USA,
Clarence Wm. Robison, Univ of Idaho, Kimberly, ID, USA,

Document Type: Proceeding Paper

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


Sediment yield and erosion modeling approaches for sprinkler and surface irrigation are discussed. Empirical approaches, such as the ULSE, and other regression approaches and their applicability to irrigated agriculture are identified. Physically based models utilizing sediment transport concepts, and use of various procedures such as kinematic wave or zero-inertia formulations to determine the hydraulics of the flow system are detailed. Sediment removal facilities models, including vegetal filter strips and detention systems, are outlined. Integrated models which predict erosion/sediment yield from different processes are evaluated for application to irrigated watersheds.

Subject Headings: Erosion | Sediment | Irrigation | Hydraulic models | Kinematic waves | Sediment transport | Surface irrigation | Terrain models

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