Topic outline

  • Grade Stabilization Techniques for Streams

    Credits: 3 PDH

    PDH Course Description:

    One of the most challenging problems facing river engineers today is the stabilization of degrading channels. Channel degradation leads to damage of both riparian infrastructure, as well as the environment.

    Bank protection is generally ineffective over the long term and will probably be a waste of resources if the channel continues to degrade. When systemwide channel degradation exists, a comprehensive treatment plan is usually required.

    A wide variety of structures has been employed to provide grade control in channel systems. The objectives of this technical supplement are to provide a description of some of the more common types of grade control structures that are frequently used throughout the United States and describe the various design factors that should be considered when selecting and siting grade control structures

    Topics:

    • Intro to grade stabilization for degrading riparian infrastructure
    • Grade control hydraulics
    • Types of grade control structures
    • Types of loose rock structures
    • Six Methods for sizing rock for loose rock structures
    • Local scour protection for loose rock structures
    • Channel Linings
    • Loose rock structures with water cutoff
    • Structures with preformed scour holes and water cutoff
    • Rigid drop structures
    • Alternative construction materials
    • Design considerations for siting of grade control structures
    • Hydraulic and sediment transport considerations
    • Geotechnical and environmental considerations
    • Flood control impacts
    • local site conditions
    • downstream channel response
    • Geologic controls and effects on tributaries

    To take this course:

    1.) Enroll in Course: Click below to enroll:
    (must be logged into your user account)


    2.) Study: Once enrolled, click below to begin the course:

    Download the Study Guide

    3.) Test: Once you've thoroughly read the course materials, please click below to take the final examination.

    Take the final exam

    4.) Certificate: A passing grade of 70% or higher on the exam, is required to receive the certificate of completion for this PDH course.
         NOTE: After the exam is completed, you will need to return to this page, in order to print (download) the certificate of completion.

    Print the Certificate of Completion

    Intended Audience: This course is intended for Geotechnical, Civil, Environmental, Water Resources, and other engineers whose job description requires a comprehensive knowledge of geotextile applications and design procedures.
    Publication Source: US NRCS (Natural Resources Conservation Service)

    Donald Parnell, PE

    • Topic 1