Description of the System Elements

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In Talsim-NG, a river basin model is setup according to a modular principle. All relevant objects and processes of the water management system are represented by system elements. These can be linked together as building blocks to represent the entire system with its interactions.

Each system element has specific properties and methods, is able to process certain input variables and provides specific output variables (see model concept). The following table gives an overview of all system elements in Talsim-NG with their most important properties/methods as well as input and output variables:

Element	Important Loads	Properties/ Methods	Element Output
natural/ urban catchment area	Precipitation Temperature Evaporation	Soil properties/ Percentage of paved areas Runoff Generation Flow Branching Runoff Concentration ...	Surface Runoff Base Flow Total Flow ...
Discharge		Water input into the system	Runoff
Transport Reach	Inflow	Translation Retention	Runoff
Consumer	Inflow	Operational behavior Contribution from other areas Reintroduction into the system	Reintroduction Contribution Total outflow
Diversion	Inflow	Distribution regulation	Two outflows
Storage	Inflow optional: Precipitation Evaporation	Storage capacity curve Storage surface curve Efficiency of the operational equipment Operating rules (Infiltration properties) ...	Discharge Storage capacity Water level
Target Gauge	Inflow