Draw Hydrograph

This command draws a hydrograph from a hydrograph file with the extension of:

• .h1 - *.h1 files are created by SEDCAD, Hydrograph Development, or the Single Runoff Hydrograph commands.
• .hyd - *.hyd files are created by all commands under Watershed > Hydrograph Routing menu and sewer network hydrograph routing programs.

After specifying the desired hydrograph file, the following dialog box is presented:

Draw Grid: When enabled, this option creates a grid that accompanies the hydrograph that is to be drawn. Click the Setup button to access the grid settings which are discussed in detail in the Draw Grid section of the Draw Profile command.

Output to Separate Drawing: When enabled, this option draws the hydrograph to a separate drawing. Click the Set button to specify the name/location of the external drawing.

Horizontal Scale: Specify the time interval (in hours).

Vertical Scale: Specify the flow (in CFS).

The Layers, Colors, Text Styles/Sizes and Linetypes buttons provide access to settings for each of these features of the hydrograph.

Load Settings: Loads a saved collection of Draw Hydrograph settings, saved in a (.PFS) file.

Save Settings: Saves all Draw Hydrograph settings in a (.PFS) file.

Note:

• Because the horizontal and vertical axis is typically very closely spaced in the hydrograph output files, it is recommended to set the horizontal scale to a unit factor (1) and set the vertical scale to a value of 2x or 5x the horizontal scale. For many cases, a Horizontal Scale of 1 and Vertical Scale of 5 works well for plotting. When the Draw Grid option is enabled, make sure its settings are consistent with the Horizontal and Vertical Scale factors.
• Multiple hydrographs can be drawn on the same grid by first running Draw Hydrograph with the Draw Grid option on. Then run Draw Hydrograph for each additional hydrograph with the Draw Grid option off.

Prompts

Pick Starting Point for Grid <0.0 , 0.0>: Pick a point

Pulldown Menu Location(s): Watershed
Keyboard Command: hydrogrf
Prerequisite: A hydrograph file