Before you forecast, you will need to set up the Program Order, create Model Alternatives, assign Model Alternative Keys, and create at least one Forecast Run (CWMS Forecasts). You will also set the default time window for your forecast and ensure that data is available for your forecast. Remember, it is essential that you setup the program order, before forecasting.
Model Alternatives and Forecast Runs contains information on how to create MFP model alternatives. For other programs, refer to the individual user documentation (HEC-HMS, HEC- ResSim, HEC-RAS, and HEC-FIA).