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GSSHA - No links found

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I trying to run a GSSHA model but there is an error message as "No links Found" when saving or running the GSSHA mode, what that error means and how to fix it?

Best regards

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I have seen this error before when I have stream arcs defined as "General Stream" as the stream arc type and diffusive wave turned on for the stream routing in the job control. If you would like to use stream routing, it requires you to define the stream arcs as "Trapezoidal Channel" and define the geometry (base width, side slopes, etc.). The other option would be to leave them as "General Streams" and turn off 1D channel routing.



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