HEC-RAS 6.4 has been released!

Reported problems with previous versions can be seen by choosing the Versions drop down in the upper right corner of this page.

HEC-RAS 6.4

IssueDescriptionStatus 1 2 3 4
Creating new RAS Terrain May Add 1.0 To Terrain Elevation

Creating a new terrain in RAS Mapper will sometimes add 1.0 to the elevation values.    Workaround: When creating a new terrain, specify the Vertical Conversion to "Custom Add:", and specify a value of 0.

RESOLVED

Courant Map Not Plotting In 2D Areas In RAS Mapper.

Plans that were ran in 6.4 will not show courant values in 2D Areas.  Workaround: Run plan in 6.3.1 in order to view courant values in 2D Areas.

RESOLVED

Re-compute of propery tables for 2D Area when updating 2D Connections

2D Area hydraulic tables are recomputed during simulation if the 2D Connection Elevations were updated through RAS Mapper. Workaround: Update elevations from the Geometric Data Editor.

RESOLVED

Difference Plot for Floodway Encroachment Analysis

The Difference Plot for Floodway Encroachment Analysis will not plot for multiple reaches at one time.  Workaround: Plot individual River- Reach profile plots separately.

RESOLVED

Unable to Import WPC - QPF data in GRIB2 format

The National Weather Service's Weather Prediction Center provides 2 national gridded precipitation products in GRIB2 format: Quantitative Precipitation Estimates (QPE) and Quantitative Precipitation Forecasts (QPF). Currently, RAS is unable to import the QPF dataset due to its compression type. Workaround: Use HEC-MetVue or HEC-Vortex to convert the QPF data to DSS before use in RAS. 

FUTURE VERSION

Unable to Create Terrains from GeoTIFFs Exported from CAD Application

HEC-RAS geospatial libraries cannot determine the projection data stored in GeoTIFFs exported from a common CAD application. This results in a failure when importing the geotiff to a RAS terrain. 
Workaround: Reproject the terrain to a desired projection in a GIS application before importing. Alternatively, import the terrain in RAS before defining a projection in Mapper, then set the appropriate projection (spatialreference.org) following import. 

FUTURE VERSION

GDAL Conflict when Opening RAS Mapper

"Error initializing the GDAL path variables. Please check HEC-RAS installation" error message is displayed when attempting to open RAS Mapper.

View Discussion

1 RESOLVED - issues are fixed and will be available in the next release.
2 IN PROGRESS - issues are currently being worked on.
3 IMPROVED - the next version includes an incremental improvement but not a total fix.
4 FUTURE VERSION - this requires a structural change or major development. The team will add it to a future version if funding permits.