To set up a GSSHA initial overland flow model in WMS, use the following steps:
1. Delineate a watershed.
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- Build a single watershed basin. GSSHA models require having a single watershed boundary polygon.
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2. Generate a 2D grid.
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- Create a 2D grid in the Map Module.
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4. Set overland flow roughness coefficients.
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- Set up an index map that describes the spatial variation of the roughness.
- Edit the mapping table to assign specific values to the index map IDs.
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5. Define precipitation.
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- Set the intensity and duration of the precipitation in the GSSHA model.
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6. Save and run model.
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- Save the project before running the GSSHA simulation.
- Run the model.
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7. Visualize overland flow results.
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- Select the hydrograph to see the hydrograph plot.
- Select a summary file in the Project Explorer to view the data as a text file.
- Use contours in the display options to visualize the depth contours.
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