Release Notes

The release notes for HEC-FIA 3.4 can be found here.

Known Issues

The status of issues since the CWMS 3.3.1 release can be found here

The known issues as of the CWMS 3.4 release can be found here.

Workarounds

Viewing Results

In CWMS 3.4 the result reports of a successful HEC-FIA Grid Only Alternative simulation are only available to view from the CAVI, and not within HEC-FIA. 

Only one HEC-FIA alternative can viewed in HEC-FIA per forecast run

This is because an HEC-FIA simulation is created for each HEC-FIA alternative in the forecast run and given the name of the forecast. When two alternative exist the first simulation is overwritten by the second upon compute because the simulation names are identical. However, results for both simulations can still be viewed from the CAVI Reports buttons. 

HEC-FIA sometimes has trouble displaying some map layers in map panels when viewing in the Web Coordinate System

If map layers do not appear, or are being projected to the wrong location, change the View settings to display in the Watershed Coordinate System. 
FIA View Menu - How to change the Displayed Coordinate System

Additional data checks have been added since HEC-FIA 3.2 to make users aware of data gaps. A common data issue among older HEC-FIA models is missing damage function data for particular Occupancy Types. To fix the missing damage functions, you can import and assign the default Occupancy Types to the missing ones. If you receive the errors below in the compute dialog, see this discourse post to resolve.
FIA Compute Window - Missing Damage Functions for Specific Occupancy Types