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The Percent Removal filter removes a fixed percentage of the constituent associated with the quick flow of the functional unit (FU) and a fixed percentage of the constituent associated with the baseflow.

Scale

This model is a catchment scale model.

Principal developer

Cooperative Research Centre for Catchment Hydrology

Version

Source v2.10

Dependencies

Requires a constituent generation model to be assigned to the corresponding functional unit(s).

Availability/conditions

The Percent Removal filter is automatically installed with Source.

Flow phase

Each time-step, the model removes a fraction of the constituent load that was generated from the functional unit.

The constituent generation models generate both a ‘quick load’, associated with the quick flow component of runoff, and a ‘slow load’, associated with the slow flow, or baseflow, runoff component.

The quick load is reduced by the Percent Removal filter using the PercentRemoval_Q parameter.

The same process is applied to the constituent load associated with the baseflow (the ‘Slow Load’ here), using a separate, PercentRemoval_S parameter.

Equation 2

The result of the filter is the total load for the functional unit, which is the sum of the filtered quick load and the filtered slow load.

Equation 3

Input data

This model operates on the incoming constituent load, which is automatically provided to the model by Source.

Parameters or settings

Refer to Table 1.