This section describes the groundwater modelling tools that are available in Source, namely the: 

• Groundwater Numerical Model for 1-Dimensional Flow - GN1D
• Groundwater Analytical Tool - GAT

The groundwater tools are available on Storage Routing Link Routing. Right clicking on the Groundwater menu item in the Link Editor displays the available groundwater models.

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The Saturated Numerical Model refers to the GN1D model, while the Flux Input, 

Heads Input, Saturated Analytical Model and Unsaturated Connection Model are components of the GAT toolbox.