Topic outline

  • Introduction to the Rosgen Stream Classification System

    Credits: 2 PDH

    PDH Course Description:

    Rivers are complex natural systems. A classification system is often used to stratify river reaches into groups that share common physical characteristics. A stream classification system provides better communication among those studying river systems and promotes a better understanding of river processes.

    The river classification system presented in this course is based on measurable physical parameters. The stream classification presented in this technical supplement is condensed from the more detailed version by Rosgen (1994). It is intended for planning purposes,
    but is not sufficient for design. Appropriate data for use in river classification systems can be obtained from simple measurements and estimates.

    Topics:

    • Stream Reaches
    • Plan view (planform) type and
    • level I classification
    • Valley types
    • Channel slope—level I, II
    • Morphological description (level II classification)
    • Bankfull discharge validations
    • Entrenchment
    • Channel material
    • Width-to-depth ratio
    • Sinuosity
    • Interpretations and uses of the
    • Rosgen stream classification system
    • Stream management
    • Channel evolution
    • Planning stream restoration measures
    • Communication
    • Prediction
    • Trends and dominant processes

    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 Hydraulic, River and Stream, Geotechnical, Civil, Environmental, Water Resources, and other engineers whose job description requires a introductory knowledge of Rosgen stream classification procedures.
    Publication Source: US NCRS

    Donald Parnell, PE

    • Topic 1