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Home Forums RORB – general use User input Hydrograph within RORB

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    Hi There,

    I am looking to undertake a suit of runs (different durations and temporal patterns) to determine the critical case for a 1% AEP flow. This will be undertaken using generated design storms. However, I wish to have one of the nodes in my model set up as a user defined hydrograph (which I have calculated separately). How do I incorporate this separate hydrograph into my model? If there is an additional file I need to load, is there an example somewhere of exactly how this file is to be set out (syntax used to describe the flow over time)?



    Benson Liu

    Hi Luke,

    I am afraid that there is no easy way to input a user defined hydrograph when doing a suite of runs. The user defined hydrograph must be inputted into the storm file and currently there is no way for RORB to automatically put the user defined hydrograph into the storm file when RORB generates them.

    What you would need to do is to manually add in the hydrograph to each storm file generated (details on how to do this are in the RORB manual, Table 5-2 Item 9), add in the inflow to the catchment file (after generating the storm files) and then re-run each simulation individually with the altered storm and catchment files. This may not be practical depending on the number of runs you are doing.

    To help with running the individual simulations, you can try to batch up the individual runs using the command line version of RORB. The instructions on how to use the command line version should be included in your RORB download.

    Kind regards,




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