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Home Forums RORB – general use Fatal Error _ Apply direct and indirect impervious fractions

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  • #2114

    Hi everyone,

    I have a RORB model which works fine when I run it with NO indirect impervious fractions turned on.
    But as soon as I turn on this option and define the indirect impervious area it is crashing with a fatal error before IL,CL and Kc value windows pop up.

    it gives me following warning
    “You will nee to fix up the catchment (vector) file before proceeding”

    Here is the error in RORBWIN.tmp:

    Sub-area areas
    Impervious flag
    Fractions impervious
    Data error: possibly character data where numerical value expected,
    or illegal number

    Do you know what can be the reason?


    Benson Liu


    This question was answered privately but I will post here for other people to see. The error that was occurring is because the command line version of RORB is unable to handle the indirect and direct impervious fraction functionality. This feature is only available in standard RORB.

    Kind regards,



    Hi Ben,

    Thanks for the answer, But I am using the standard version of RORB (v.6.45) not the command line version and still getting the same error.



    Benson Liu

    Hi Ali,

    Would you be able to send me the catchment, parameter and all the rainfall input files that results in this error. My email is benson.liu@harc.com.au. I will need to take a look at the files to work out what is happening.

    Kind regards,


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