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If this occurrence criterion not met, go to step 1e. 

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Step 1e: Is flow slide possible based on the occurrence criterion based on average geometry?

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  • The total slope (channel edge-channel bottom) is on average steeper than or equal to 1 : [7 × (HR/24)(1/3) ], in which HR is defined in the figure below.
  • Breaching is possible (see paragraph below called "Breaching criteria")

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If the criteria of occurrence is not met, the Global and the Overall checks SUCCEED. 

 

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Breach flow criteria:

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