TUFLOW CATCH Tutorial M02 Results QGIS: Difference between revisions
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<li> If the removed mass is divided by the cumulative mass, the resulting value represents either the removal constant (if a constant removal equation was used), or the average removal performance (if a table removal method was used). For example, in trench1, the removal performance for SED_CLAY is calculated by:
<pre>rem SED_CLAY [g] / cum SED_CLAY [g] = 118881.800 / 297204.400 = 0.400 </pre>
This value (0.4) matches the removal constant.
In contrast, bufferStrip1 uses a table removal method for SED_CLAY, resulting in:
<pre>rem SED_CLAY [g] / cum SED_CLAY [g] = 150520.800 / 150620.800 = 0.999 </pre>
This shows that bufferStrip1 removed significantly more clay than trench1. The graph below demonstrates this calculation for each pollutant across all the treatment devices: <br>
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