Welcome to the RAS Solution › Forums › HEC-RAS Help › 2D Model – Two Upstream BCs & Error saying one needs to be defined

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  • July 16, 2018 at 7:05 pm #6963
    jmrodg4
    Participant

    I have two upstream Boundary Conditions and and one downstream condition. Originally, I just had one upstream condition defined as a flow hydrograph and the downstream as normal depth, but wanted to see the effects of a small stream on the model. So, I added a third BC as a flow hydrograph. These BC lines do not intersect and are not close to touching in the model. When I run the simulation it won’t even start up. I immediately get an error message saying the new BC “needs flow or stage hydrograph condition”, which it is. I can’t seem to find anything online about this.

    July 16, 2018 at 7:55 pm #11532
    cameron
    Participant

    Did you add flows for them? Do they have different names?

    July 16, 2018 at 7:59 pm #11533
    jmrodg4
    Participant

    Yes and yes. They are both defined as flow hydrographs with different names and different flow data.

    July 16, 2018 at 10:48 pm #11534
    cameron
    Participant

    can you post a screen shot of the error?

    July 16, 2018 at 11:36 pm #11535
    jmrodg4
    Participant

    The BC in question defined – it has a flow hydrograph associated with it

    July 17, 2018 at 12:51 am #11536
    cameron
    Participant

    Can you share the files?

    July 17, 2018 at 5:10 pm #11537
    jmrodg4
    Participant

    The problem was the number of characters in the name assigned to the BC. What a joke…

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