Welcome to the RAS Solution Forums HEC-RAS Help Getting Negative Flows and this error

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  • #7318
    Anonymous
    Guest

    While unsteady simulation I am getting high depth at upstream cross sections and while proceeding towards downstream the depth is reducing and inundation is not coming prpoerly. I am running with 3 months daily time series. In the view summary output table, the computed flow values at downstream cross sections are giving negative values.

    Q tot Depth WSE
    9.97 0.41 315.31
    -1.55 0.04 314.57
    0.97 0.09 314.67
    -30.17 0.52 315.64
    6.61 0.17 314.81
    1.02 0.10 314.70
    475.81 1.23 317.14
    -7.87 0.00 314.50
    5.37 0.21 314.87
    -0.11 0.00 314.50

    #12272
    Anonymous
    Guest

    The problem is most likely caused by the downstream boundary condition being incorrect. Suggest that you check that what is being used is consistent with the situation being modelled.

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