Supercritical Flow and Steep Slope

The procedure for supercritical flow (d < d
c
) and steep slope is similar with the following exceptions:
  • Begin computations at critical depth at the culvert entrance and proceed downstream.
  • Choose a decrement of depth, δd.
  • If the tailwater is higher than critical depth, a hydraulic jump may occur within the culvert (refer to the following subsection for discussion of the hydraulic jump).