A DEM Based Hydrologic and Sediment Transport Model

by Menghua Wang,
Allen Hjelmfelt,

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


A DEM-based, physically-distributed model was developed for simulating event runoff and erosion on an agricultural watershed. Runoff was described using the diffusion equation with flow links determined from the DEM. Interrill soil loss was estimated using rainfall intensity raised to a power and transport by a transport-capacity-deficit relation. The model was applied to Goodwater Creek, a USDA research watershed located in central Missouri. The agreement between the model and the data was good.

Subject Headings: Hydrologic models | Sediment transport | Discrete element method | Simulation models | Irrigation water | Agricultural wastes | Diffusion (porous media) | Erosion | Missouri | United States

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