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Open Channel Hydraulics II: Non-Uniform Flow

Open Channel Hydraulics II: Non-Uniform Flow
Note: This PDH course is a recorded video presentation.
Course Highlights

This online engineering PDH video presentation presents the parameter “specific energy” which will first be used to introduce the concepts of critical, subcritical and supercritical flow.  It also presents various calculations related to critical, subcritical and supercritical flow, including hydraulic jump calculations. It discusses the thirteen possible types of gradually varied non-uniform flow surface profiles.  It illustrates the procedure and equations for step-wise calculation of gradually varied non-uniform surface profiles through the use of examples.


Many examples of open channel flow can be approximated as uniform flow allowing the use of the Manning equation for calculations.  Non-uniform flow calculations are needed, however, in some open channel flow situations, in which the flow is clearly non-uniform.  The concepts of supercritical, subcritical and critical flow, along with calculations related to those three flow regimes are needed for non-uniform open channel flow analysis and calculations.


This 3 PDH online video presentation is intended primarily for civil, hydraulic, highway, environmental, chemical, mechanical, and industrial engineers, who are interested in learning more about open channel hydraulics.

Learning Objectives

This PE continuing education video presentation is intended to provide you with the following specific knowledge and skills:

  • Determining the critical depth for a specified volumetric flow rate through a rectangular channel of specified bottom width
  • Determining the critical slope for a specified volumetric flow rate through an open channel of specified shape, size, and Manning roughness coefficient, with known critical depth
  • Determining whether a specified volumetric flow rate through an open channel of given shape & size with known depth of flow will be critical, subcritical or supercritical flow
  • Calculating the depth of flow after a hydraulic jump if given the depth of flow before the hydraulic jump, the volumetric flow rate and the shape and dimensions of the open channel.
  • Identifying which type of surface profile (e.g. M1, M2, M3, S1, S2, S3, etc.) is present in a specified gradually varied flow situation
  • Performing stepwise calculation of the surface profile for a specified gradually varied, non-uniform open channel flow
Course Document

For this professional engineering CEU course, you will need to watch the video presentation titled, “Open Channel Hydraulics II: Non-Uniform Flow”. To access the video presentation, you will need to log in or register and purchase the course.  Following course purchase, please click on the link provided in your account history to view the video presentation. The duration of the video presentation is approximately 111 minutes.

Please note that you will be watching the video presentation via YouTube or another video streaming platform which will be streaming though
Course Quiz

Once you are finished watching the PDH video presentation, you will need to close or minimize the video portal to return to your account and click on “Take Quiz”. You will need to take a multiple-choice quiz consisting of twenty (20) questions to earn 3 PDH credits. The quiz will be based on this video presentation.

The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and access the video presentation, please click on: