WMS:HEC-1 Depth Area Storms (JD): Difference between revisions

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Runoff simulations which use a consistent depth/area relationship as defined in the HEC-1 User's Manual can be defined by clicking on the '''Define Depth/Area Storms''' button to bring up the dialog shown below.
Runoff simulations which use a consistent depth/area relationship as defined in the HEC-1 User's Manual can be defined by clicking on the '''Define Depth/Area Storms''' button to bring up the dialog shown below.


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==Rainfall Pattern Type==
==Rainfall Pattern Type==

Revision as of 17:24, 13 February 2013

Depth Area Storms

Runoff simulations which use a consistent depth/area relationship as defined in the HEC-1 User's Manual can be defined by clicking on the Define Depth/Area Storms button to bring up the dialog shown below.

Rainfall Pattern Type

Each storm (JD record) may be defined with a set of PI/PC cards giving the precipitation pattern to be used for that depth and area. If no pattern is given for the second through ninth storms then the previously defined precipitation pattern will be used.

Alternatively hypothetical storms may be used to specify precipitation patterns. In such cases only a single storm using the PH record needs to be defined.

The rainfall pattern type is specified using the radio group at the top of dialog. As a new storm is activated, data fields which require input will be undimmed. Data fields which do not apply to the specified pattern type will remain dimmed.

Depth Area Storms

Different depth/area storms can be defined by toggling on a storm from within the Depth/Area Storms portion of the dialog.

Precipitation

The average precipitation is entered in this data field.

Area

The applicable area for this storm is entered in this data field.

Defining a Series

If a standard storm type has been chosen, a rainfall pattern must be defined using the XY Series Editor. Activate the XY Series Editor by choosing the Define Series button. A series for the first storm must be defined. If a series is not defined for the second through ninth storms, the previously defined storm will be used.


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