Project/ Watershed/ Analysis Coverage

Main applications

• When calculating the runoff model, you can optionally set the watershed analysis extent.

Figure: Watershed analysis extent

Table: Watershed Analysis Area Context Menu Items and Functions

Context menu items	function
Create a new analysis area	Create a new analysis extent area.
Delete All Analysis Areas	Delete all analysis extent areas.

An example of not specifying an analysis extent is shown below and explained by comparison.

Create a new analysis area

1. Specify the area on the map where you want to create the analysis area with a mouse click.

   
   Figure: Area designation to create an analysis area

2. To revert to the previous state, right-click or[BackSpace] press the key.

3. To cancel the creation,[Esc] press the key.

4. Confirm with double click or enter.

5. Set conditions related to the analysis range on the Properties screen.

   
   Figure: Properties screen of analysis area settings

   Table: Analysis Area Property Names and Settings

   Property Name	What to set
   name	Enter a name of your choice.
   Area (m^2)	Displays the area of the specified analysis area on the map.
   valid	Enable/disable settings. The initial value is True. True: Enabled: False: Disabled
   Line Style	Specify the line style (line type/line width/line color) to be displayed on the map. The initial values are as follows: Line Type: Solid Line Width: 2px Line Color: 128,128,192

6. If you run the simulation with the analysis area specified, the watershed analysis is aborted.

   
   Figure: Running a simulation with a specified analysis area

Delete All Analysis Areas

When you select the menu, a confirmation message appears. [Yes] Click the button to delete all analysis areas.

Figure: Delete all analysis areas

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Last update: 2023-03-20