HEC-RAS Known Issues
HEC-RAS 7.0.2
Reported problems with previous versions can be seen by choosing the Versions drop down in the upper right corner of this page.
HEC-RAS 7.0.2
| Issues | Description | Status |
| Volume Accounting - Reporting Error | For models using evapotranspiration for models not using precipitation, volume accounting is not being reported properly. | RESOLVED |
| SI Conversion Issue for DL Breach Variables (E and Tc) | There is a conversion error in the SI mode of DL Breach. The interface does not send the correct Erodibility or Critical Shear correctly to the DLBreach engine. SI models that use these variables will erode too fast (by a lot). Workaround: If you enter erodibility and critical shear in US Customary units () in an SI model, it should compute correctly. | RESOLVED |
| Pipe Network Max Flow Profile for SI Models | Pipe network models that are built in SI show the Max Flow Profile in cfs not cms. This bug only impacts the the flow profile - velocity and HGL are shown in the correct units. | IN PROGRESS |
| Pipe Network Property Table Extrapolation | The pipe network property tables are computed for HGLs up to 1000 times the pipe diameter. When the HGLs exceeded 1000 diameters high, the property tables were extrapolated as if they were open channel instead of closed conduit (area and hydraulic radius increase). This lead to apparent zero friction loss when HGLs exceeded 1000 diameters. | RESOLVED |
| 2D Connections - Breach not Occurring with Simplified Physical Breach Method | For 2D Connections with the the 2D Domain equation selected for the Overflow Computation Method, if the breach method is Simplified Physical and the user has not turned on the Mass Wasting feature, the breach will not occur. Workaround: Turn on the Mass Wasting feature to provide an initial area to develop a velocity through the breach (this is the intended use case). Switching to the Weir Equation method will also result in a breach. | RESOLVED |
| Bridge Plot - 1D Velocity Distribution | 1D Velocity Distribution Plot for Unsteady Flow models is not displaying the correct number of slices for Bridge plots. One velocity for the channel and each overbank is shown. The plot was corrected for Cross Sections in version 7.0.1. | FUTURE VERSION |
| 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. | 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. |
1 RESOLVED - issue is fixed and will be available in the next release.
2 IN PROGRESS - issue is 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.