Skip to contentUnited States Department of Transportation - Federal Highway AdministrationFHWA HomeFeedback

Hydraulics Engineering


Email Notifications

Related Features


Eric Brown
Resource Center (Baltimore)

Brian Beucler
Office of Bridges and Structures

About Culvert Hydraulics

A number of issues must be considered during the hydraulic design of culverts including the following: allowable headwater; type of flow control (inlet control versus outlet control); permissible barrel and outlet velocities; location and orientation of the barrel(s); use of improved inlets; potential for siltation and abrasion of the culvert barrel; inlet and outlet protection for scour control; debris control; and any necessary fish passage criteria.

Updated: 06/10/2014

United States Department of Transportation - Federal Highway Administration