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

Abstract:

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: Simulation models | Sediment transport | Watersheds | Runoff | Hydrologic models | Erosion | Discrete element method | Missouri | United States

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