WMS:Define Upstream Channel

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HY8 Modeling Wizard showing the Define Upstream Channel step.

The Define Upstream Channel step is used to define an arc representing the upstream channel.

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This dialog functions similar to the step in which the tailwater channel was defined. When an arc is defined (arcs must be created from upstream to downstream) from this step in the wizard, their attribute is set to the HY-8 upstream arc attribute type. This arc is used when delineating the floodplain from the culvert headwater data in the next step of the wizard.