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### Discharge Influent Csim / Discharge Effluent Csim

The GREAT-ER model system calculates concentration distributions for the catchment river network as well as for the influent and effluent of the catchment's treatment plants.

These values are stored in the scenario directory in a separate file (`CsimSTP.dbf`). Using the related menu item a new theme appears on the view, displaying the discharge sites classified by either influent or effluent concentration.

After executing one of these menu items once, the model results for treatment plants can be investigated using the identify tool.