Desbordes Model

This is one of a number of runoff models that can used when running a simulation. It is the standard runoff model used in France. You select which runoff model to be used on the Runoff Surface Grid Window of the Subcatchments Grid.

Basic function

To calculate the flow generated by the runoff during a rainfall event, at the different inlets to the drainage system network.

Runoff model's function in the hydrology model

To calculate the storm water discharges into the drainage system from rainfall hyetograph data and catchment data. The software uses these discharges as inflow data for the hydraulic calculations.

Runoff computation is in parallel with the washoff computation at each timestep. The runoff module provides data to the washoff module.

Application

The software calculates runoff for each subcatchment at each time step.

Depression Storage (Initial Losses) Model

Surface Pollutant Model

Subcatchments Grid