HY8:Roadway Overtopping

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When the headwater elevation exceeds the elevation of the roadway, overtopping will occur as shown below. When overtopping is simulated, the program computes the discharge for each culvert and for the roadway that will result in the same headwater elevation. An overtopping analysis will be completed for every crossing, and, if overtopping occurs, the corresponding flow values will be displayed.


HY8Overtopping.JPG