Welcome to the RAS Solution Forums HEC-RAS Help FLOOD map extent

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  • #6925
    simaodinho
    Participant

    Hi
    I m new to HECRAS.
    I would like to map the extent of a flood using HECRas.To do so I have watched and read several tutorials.
    I am a GIS Engineer so I choosed to construct the geometry using Qras Plugin of QGIS.
    Once the Geometry is ready (River,cross section and terrain),I have created a new project,Imported the geometry.I have adjusted manning values.
    I have created 2D flow area that covers all the river and banks and have generated computation points.
    I have filled the unsteady flow data with flow Hydrograph as upstream boundary condition and normal depth as downstream boundary condition.
    I have run the model,no error detected but at the end once I go to Ras mapper and click the depth or velocity layers,nothing is displayed.
    I tried to figure out where is the problem,without any success .
    Any idea?
    Thanks

    #11442
    user16
    Participant

    does your flow values correspond to the cross-section depth and area or is it too less? It may be a problem with the unit system. can you provide a screenshot with the results layer marked ticked?

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