To complete the configuration of a model alternative, you must assign each model alternative a Model Alternative Key. The Model Alternative Key is an alpha-numeric identifier that will determine the names of your forecast runs.
To assign model alternative keys:
Within the Setup module, select Model Alternative Keys from the Models menu. The Model Alternative Keys dialog will open.
Using the Plugin drop-down list, select the model for which you wish to assign a key.
In the Key field, enter a single unique alpha-numeric character that will be used to identify the listed ModelAlternative.
Repeat Steps 2 and 3 for all models and model alternatives.
Click OK, and the Model Alternative Keys dialog will close.
In the above figure, only one alternative has been assigned a key. The first two alternatives do not have keys, and a model alternative key can be assigned if needed. A key has been previously assigned for the third alternative and cannot be modified.
Model alternatives for the standard programs in CWMS might be named similar to the following: