File name
RiverSystem.Plugins.PerfectGWLag.dll
Description
This plugin allows you to model groundwater and its interactions in a sub-catchment.
After installation, next steps involve creating a sub-catchments scenario with the Geographic Wizard for catchments, and configuring various parameters to model groundwater. Just as with any catchments scenario, use the wizard to first create a standard set of sub-catchments to suit your study area and modelling requirements in Define the network (Step 3).
Next define the functional units using a shape file (refer to Specify functional units (Step 5) for details) and assign areas to them using a raster (Specify functional unit areas (Step 6)). Figure 1- shows an example of this. The next section provides details on configuring rainfall runoff, constituent generation and filter models in Source.
Figure 1 - Assigning Functional Unit Areas
Defining and assigning models
You can then assign models to rainfall runoff, constituent generation, and any filtering you wish to the subcatchments using the wizard or the options in the Edit menu (refer to Rainfall runoff models and Constituents for details):
Constituent generation – You can add “Salt” as a constituent and assign the “Simple GW salt model”;
Rainfall runoff – assign “PERFECT GWLag” as a model. To assign inputs, choose PERFECT GWLag model input assignment from the Available Methods drop down menu (Figure 167) and load the weather database you wish to use. Check the following:
- the station number from each FU (left hand column) match the station numbers on the right hand side (drop down lists, right hand columns). If they do not, the entry on the right hand side will be the closest text based match, not the closest geographic match. You can adjust the matches by selecting an alternate station from the drop down list of stations available in the loaded weather database;
- Note that the minimum and maximum dates will be displayed by default. To save memory you can either import the desired time period or import the entire range but run the model for a selected period. The latter is a more flexible option.
Filter – Assign any filter model you wish from the drop down menu;
Links – you can add a model to selected links and if flow routing or a storage model is required. Note that there is no link model specific to the Groundwater tools in Source; and
Nodes – select FlowScaledLossModel from the Node models drop down list and click Add Model.