INSTRUCTORS:
Chris D. Bahner, P.E., D.WRE, M.ASCE
Thomas R. Grindeland, P.E., D.WRE, M.ASCE
Hans R. Hadley, P.E., P.G., CFM, M.ASCE
Kenneth D. Puhn, P.E., CFM, M.ASCE
Brent Travis, Ph.D., P.E., D.WRE, M.ASCE

The seminar provides an excellent review of the elements and tools of the subject. Overview, case examples and real tools references were most helpful. William Stephens, Kestrel Horizon, LLC, Greenville, SC

This is a hands-on seminar. You must bring your own laptop.

Purpose and Background

The course will focus on streambank stabilization techniques for both restoration and traditional flood control projects. Traditional hard structural-type channel bank stabilization techniques will be discussed (using rock riprap, gabions, articulated concrete blocks) as well as redirective techniques (including bendway weirs, rock vanes, and spur dikes). In addition, the use of bioengineering solutions will be presented. In this course, you will learn the applicability and limitations of the various techniques, and recognize the importance of adequate toe protection. Workshops accompanying the lectures provide practical application experience in streambank stabilization design.

• Gain insight on the causes of streambank failure and erosion
• Understand concepts of channel stability and its assessment
• Review the fundamentals of stream systems and channel processes
• Understand when streambank stabilization may be required
• Obtain guidance on biotechnical and redirective techniques for streambank stabilization
• Learn primary means used for streambank stabilization and how to select a streambank protection method
• Receive guidance on establishing limits of streambank protection
• Review design approaches to streambank stabilization for restoration and flood control
• Gain insight into stream channel design
• Learn how to predict total scour for toe scour protection

Upon completion of this seminar, you will be able to:

• Identify the two main techniques for streambank stabilization
• Understand the fundamentals of fluvial geomorphology
• Identify the design data requirements for streambank stabilization project
• Understand the basic principles and techniques on estimating the total scour for streambank protection measure

Instructor(s) will use a problem solving exercise to demonstrate and illustrate the required data, design methods, and evaluation techniques necessary to select and design bank stabilization measures, and students will take a test at the end of the class with questions addressing these items. The test will be graded in class by their classmates as the instructor goes over each question and answer.

Individuals involved in the planning, design, construction, and maintenance of channel restoration and flood control projects who need state-of-the-practice information on streambank stabilization techniques such as how to select appropriate streambank protection methods, obtain design guidelines and criteria, and evaluate toe scour.

Time:  8:30 a.m. - 4:30 p.m.

DAY 1 

Introduction

• Stream Instability
• Streambank Stabilization Approaches

Assessment Fundamentals

• Fluvial Geomorphology Fundamentals
• Channel Form and Processes
• Channel Stability Assessment

Streambank Stabilization Methods

• Biotechnical Techniques
• Redirective Techniques
• Resistive Techniques

DAY 2  

Hydraulics

• Design Discharge
• Tractive Force and Permissible Velocity
• Channel Stability
• Top Elevation of Protection

Streambank Protection Design Criteria

• Biotechnical Techniques
  Resistive Techniques - Bendway Weirs, Spur Dikes, etc.
  Traditional Resistive Techniques

Workshop - Streambank Protection Design

DAY 3 

Toe Protection Techniques

Toe Scour Evaluation

• Long-term Degradation
• General Scour
• Local Scour
• Other Scour Components

Workshop - Predicting Total Scour

Streambank Stabilization and Grade Control

Introduction to Design Computer Programs