HEC-RAS 6.0 beta 2 is now available!

Written by Chris Goodell | February 3, 2021



  1. Ian Sharp

    on February 5, 2021

    Interestingly, the RAS release notes say “Version 6.0 of the River Analysis System (HEC-RAS) is now available. This Version supersedes Version 5.0.7, and all previous versions.” I suspect that is a little premature as we are on Beta Version 2.

  2. Chris Goodell

    on February 8, 2021

    Correct. Use the beta version for testing and training, but better to wait for the official release of 6.0 before using it for a project.

  3. Diana

    on February 15, 2021

    Hi Chris, I’m on the 5.0 version of HEC-RAS and I’m having trouble with my XS labels. I’m trying to create a geometry for the bathymetry but the XS labels are not in a consequential manner and thus are connecting XS that are not next to one another; creating channels where there shouldn’t be any. Any idea on why the river stations numbering are acting this way? I know the label should be the distance between the XS to the downstream of the river, but it seems my XS labels are not following this rule. Appreciate any direction you can nudge me to for a solution.

  4. Chris Goodell

    on March 4, 2021

    The labels are whatever you assign them and are not tied to the actual spacing between cross sections. Unless you created them geospatially with GeoRAS or RAS Mapper. Also, if the cross sections are georeferenced, but the coordinates are wrong, they could be placed in non-sequential order. Check the coordinates of the cross section cutlines and make sure they are correct.

  5. Lana Bayless

    on February 26, 2021

    Chris – I am running the Beta Version 2 to do a fairly simple analysis. I am fairly new to HecRas – so am not sure if this is a bug – or something with my model itself. Could you offer any insight on the following error message:

    Plan: ‘Plan 02’ (BPS-Existing2.p02)
    Simulation started at: 26Feb2021 10:49:35 AM

    Writing Geometry…
    E-171st_So: Mesh property tables are current.
    E-171_No: Mesh property tables are current.
    No-Military: Mesh property tables are current.
    W-171_NW: Mesh property tables are current.
    W-171_SW: Mesh property tables are current.
    W-171_West: Mesh property tables are current.
    Completed Writing Geometry

    Writing Event Conditions …
    Completed Writing Event Condition Data

    Steady Flow Simulation HEC-RAS 6.0 Beta

    HDF_ERROR trying to use HDF output file
    Subroutine HDF_OPEN_LAT
    HDF5-DIAG: Error detected in HDF5 (1.8.11) thread 0:
    #000: ..\..\src\H5G.c line 285 in H5Gcreate2(): no name
    major: Invalid arguments to routine
    minor: Bad value

    Stored maps were not written because the simulation did not complete.

    Computations Summary

    Computation Task Time(hh:mm:ss)
    Completing Geometry 1
    Completing Event Conditions <1
    Steady Flow Computations <1
    Complete Process 2

    Any help you can provide would be appreciated.

  6. Chris Goodell

    on March 4, 2021

    The messages about the mesh property tables implies you have some 2D areas. But there’s also a message saying “Steady Flow Simulation HEC-RAS 6.0 Beta”. That implies you are running a steady flow simulation.
    You have to run 2D areas using unsteady flow.

  7. Jimmy

    on March 10, 2021

    It seems the the stage and flow hydrograph function does not work under Beta 6. I also have problem with DSS times series plot when I specify, for example, a flow hydrograph for the upstream XS for unsteady flow. After I run the model in beta 2, but open it in v5.07, both of the above functions work.

  8. Chris Goodell

    on March 23, 2021

    Thanks for letting us know! Would be good to send that to HEC as a bug report.

  9. Jim

    on March 23, 2021

    HEC just released V6 Beta 3 and both of the issues have been fixed from my test run.

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