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| HEC-RAS× | Équation Universelle de Perte de Sol× | |
|---|---|---|
| Domaine | Géophysique | Géophysique |
| Famille | Process / pipeline | Process / pipeline |
| Année d'origine≠ | 1995 | 1978 |
| Auteur d'origine≠ | US Army Corps of Engineers Hydrologic Engineering Center | Waldo Wischmeier and Dwight Smith |
| Type≠ | 1D/2D river hydraulics and flood inundation modeling | Empirical soil erosion prediction model |
| Source fondatrice≠ | Brunner, G. W. (2010). HEC-RAS river analysis system hydraulic reference manual. US Army Corps of Engineers Hydrologic Engineering Center. link ↗ | Wischmeier, W. H., & Smith, D. D. (1978). Predicting rainfall erosion losses: A guide to conservation planning. USDA Agricultural Handbook 537. link ↗ |
| Alias≠ | HEC-RAS | USLE, Revised USLE |
| Apparentées | 3 | 3 |
| Résumé≠ | HEC-RAS (Hydrologic Engineering Center River Analysis System) is a hydraulic modeling software developed by the US Army Corps of Engineers that computes water surface elevation and velocity in open channels and floodplains, and depicts inundation extent and depth. Since its introduction in 1995, HEC-RAS has become the de facto standard for floodplain delineation, dam break analysis, and flood risk assessment for regulatory and engineering purposes. | The Universal Soil Loss Equation (USLE) is an empirical model that estimates annual soil loss due to sheet and rill erosion on hillslopes caused by rainfall and runoff. Developed by Wischmeier and Smith in 1978 from decades of erosion plot experiments, USLE has become a standard tool for erosion risk assessment, conservation planning, and best management practice design. The Revised USLE (RUSLE) updated the original model with improved factor algorithms. |
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