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Modelled outflow TSS concentration depends on the soil moisture at the start of the event (continuous variable) and the vegetation type (categorical variable), as shown below.
In spreadsheet terminology the modelled outflow TSS concentration from effectively vegetated filters is: 1.27 - 1.96 * LN(MAX(SoilMoisture, 0.09))
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Here are some sample modelled outflow TP concentrations.
Total Nitrogen
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Here are some sample modelled outflow TN concentrations.
