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Project/ Drainage Area

Main applications

Set when there is a flood control effect from the river to the drainage area.

Figure: Drainage basin

Table: Drainage area context menu items and functions

Context menu items function
Creating a new drainage basin Create a new drainage area.
Delete all reservoirs Delete all drainage areas.

Creating a new drainage basin

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


    Figure: Specify the drainage 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. Double-click or [Enter] key to confirm.

  5. Set the conditions related to the drainage basin on the properties screen.


    Figure: Properties screen of drainage area settings

    Table: Reservoir property names and settings

    Property Name What to set
    name Enter a name of your choice.
    Figure area (m^2) Displays the area of the specified shape on the map.
    Minimum water level (m) Specifies the minimum water level of the drainage area.
    The initial value is 0.
    Maximum water level (m) Specifies the maximum water level of the drainage area.
    The initial value is 15.
    Initial water level (m) Specifies the initial water level of the drainage area.
    The initial value is 0.
    H-V On the H-V Formula Settings screen, define the relationship between the water level and the storage capacity.
    Initial water storage (m^3) Specify the initial reserve.
    The default value is 0.
    Total water storage (m^3) Specify the initial reserve.
    The default value is 0.
    Area (m^2) Specifies the area of the drainage area.
    The default value is 0.
    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: 0,32,192
    Fill style Specify the style (fill/color) for filling the extent on the map.
    The initial values are as follows:
    Fill: Fill
    Color: 0,32,192

Delete all reservoirs

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

Figure: Delete all reservoirs.

Last update: 2023-03-20