Stream Classification - Procedures & Applications

From Date: 
Sat, 06/05/2010 - Sun, 06/06/2010

The workshop provides an overview of stream classification systems and detailed instruction in the use of the Rosgen Stream Classification System, the most widely used classification system. The Rosgen classification system offers a number of advantages: it is totally integrated with the fundamental principles of stream morphology presented in Course #1, Fundamental Principles of River Morphology and their applications, and it includes considerable guidance in its application with respect to sensitivity to disturbance, recovery potential, sediment supply, and stream bank erosion potential.


This course is a prerequisite for advanced courses in Stability Assessment and Monitoring. A combination of both lecture and field application are provided.




Introduction to Classification

Historic Attempts at Classification

Rosgen Classification System


· A Hierarchical Approach to Inventories

· Delineative Criteria

· Pre-mapping stream types on aerial photos and topographic maps

· Field methods to properly measure morphological features

· Reach Classification

· State Assessment and prediction

· Monitoring or Validation of Predictive Tendencies


Classroom Exercise

Field Measurements




Review of Field Collected Data

Applications of Classification System


· Stream stability assessment / Fish habitat structure evaluation

· Watershed management/cumulative assessments and analysis

· Hydraulic and sediment relations / Engineering design concepts


Field Trip for Visual Classification of Major Stream Types