WMS:HEC-1 Basin Average Precip (PB)

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With this method, a time distribution can be entered to create a PI or PC card. The distribution is entered via the XY Series Editor, refer to the chapter titled Using the XY Series Editor. Several standard storm distributions can be loaded automatically from this editor. In addition, distributions can be saved and later restored from a file. When creating PI or PC records, an IN record needs to be defined to specify the beginning time and date of the storm. WMS computes the values for this IN card based on the first time increment in the precipitation (PI or PC) record defined in the XY Series Editor. Because only one IN card defining the precipitation time increment is defined for each raifall distribution, the precipitation time increments defined for a single rainfall series in the XY series editor must all be equal. The time/date parameters entered on the IT card (in the HEC-1 Job Control dialog) are used for the start time/date of the precipitation.

Related Topics

• Editing HEC-1 Parameters
• Defining Precipitation