Culvert & Orifice Hydraulics

Estimate headwater depth ($HW$) for circular pipe culverts under inlet control.

📘 View Methodology Notes

HW = D × [ K × (Q / (A × g^0.5 × D^0.5))^M + 0.5S ]

Design Discharge ($Q$ in m³/s)

Culvert Diameter ($D$ in m)

Inlet Coefficient ($K$)

Bed Slope ($S$)

Required Headwater Depth ($HW$): -

Culvert Flow Velocity ($V$): -