HY8:Culvert Summary

The culvert summary table shows the performance table for each culvert in the crossing. Each culvert's properties can be viewed by selecting the desired culvert from the drop-down list. The following properties are represented in the table:

• Total Discharge: Total discharge at the culvert crossing
• Culvert Discharge: Amount of discharge that passes through the selected culvert barrel(s)
• Headwater Elevation: Computed headwater elevation at the inlet of the culvert(s)
• Inlet Control Depth: Inlet control headwater depth above inlet invert
• Outlet Control Depth: Outlet control headwater depth above inlet invert
• Flow Type: USGS flow type 1 through 7 is indicated and the associated profile shape and boundary condition. Press the Flow Types button for a summary of Flow Types.
• Normal Depth: Normal depth in the culvert. If the culvert capacity is insufficient to convey flow at normal depth, normal depth is set equal to the barrel height.
• Critical Depth: Critical depth in culvert. If the culvert capacity is insufficient to convey flow at critical depth, critical depth is set equal to the barrel height.
• Outlet Depth: Depth at culvert outlet
• Tailwater Depth:Depth in downstream channel
• Outlet Velocity: Velocity at the culvert outlet
• Tailwater Velocity:Velocity in downstream channel

In the table, bold values indicate inlet or outlet controlling depths. Within the culvert summary option, plot the performance curve for each culvert in the crossing. A sample performance curve is displayed in the figure below.