Home Forums RORB – general use RORB Model Calibration

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    Ashen krishantha
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    Hi there,

    I’m currently working on model calibration in RORB for an urban drainage catchment and had a couple of questions.

    Is there a practical way to adjust both the routing coefficient (Kc) and the non-linearity exponent (m) simultaneously, primarily to observe how different values of m affect the shape of the simulated hydrograph?

    From what I understand, m is usually held constant (around 0.8), and calibration is primarily achieved by adjusting Kc. However, since my study area is a highly urban catchment where runoff is primarily conveyed through pipe systems (with minimal open channel flow), would it still be appropriate to assume m = 0.8?

    cheers,
    Ash

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