Tutorials

On this page you will find a number of tutorials to help you get to grips with the model. More tutorials will be posted soon. Check back regularly !

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Tutorial 1 : Quick start

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Tutorial 2 : Construction of model input data

• The topography
  • Selection of RGE ALTI tiles
  • Merging of RGE ALTI tiles
  • DTM hydrological correction
  • Runoff axes mapping
  • DTM correction along predefined runoff axes
• Hydrodynamic and erosive properties of the catchment
  • Basic data
  • Parametrisation
  • WaterSed Input Generator
  • Water storage Generator
• Rainfall and initial soil humidity
• The soft hydraulics

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Tutorial 3 : Runoff / erosion guide

There are several types of approach, depending on the problem, the workscale and the resolution of the available data.

The MESALES model (INRA – now INRAE) is an expert model for mapping erosive hazards (soil sensitivity to detachment under the action of raindrops – « splash effect ») (Le Bissonnais et al., 1998, Chabert et al. 2020). There is a guide for application at departmental level (Cerdan et al., 2006 BRGM/RP-55104-FR). This mapping can be used to rank the catchment according to the hazard level and to identify priority catchment areas, on which WaterSed modelling can be carried out.

To set up a WaterSed model, sufficiently resolved data is required. The procedure for preparing input data is detailed in Tutorial 2 (see above).