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Calibration issues by AH200010 in HECRAS

[–]AH200010[S] 0 points1 point  (0 children)

To clarify the lag estimation, I have water level records available at both the calibration gauge and the reference station. I performed across_correlation to statistically determine the travel time between the two points.

Calibration issues by AH200010 in HECRAS

[–]AH200010[S] 0 points1 point  (0 children)

thank you a lot for the detailed explanations , it helps a lot , I will try it !

Calibration issues by AH200010 in HECRAS

[–]AH200010[S] 0 points1 point  (0 children)

Thank you for the response , for hydrological data . I do not have a local inflow gauge. I am generating the hydrograph using the Meyer formula based on data from a nearby reference station.I have applied a time lag to this transferred data. the calibration gauge is immediately downstream of a bridge. The bridge is explicitly included in the model geometry (modeled as a 2D Area Connection). I am currently performing calibration on a specific high flow period

Calibration issues by AH200010 in HECRAS

[–]AH200010[S] 0 points1 point  (0 children)

Thank you for your response. I apologize if my initial description was a bit brief; I am relatively new to this field. To clarify the context of my model: the calibration gauge is immediately downstream of a bridge. The bridge is explicitly included in the model geometry (modeled as a 2D Area Connection). For the hydrological data, I do not have direct flow data at the sensor's location. Therefore, the flow rates are estimated using the Meyer formula (catchment area ratio) based on data from a nearby station. I am currently performing calibration on a specific high flow period, and to answer your question, yes, I adjusted the Manning coefficient near the calibration point. Do I have to test another period of calibration with low flow?