Course # SPE-0303: June 17-18 2003
Stream Stability Assessment & Monitoring

Prerequisite: Stream Classification - Procedures & Applications

This workshop is designed to train individuals in field data collection methods and analysis techniques for:
§ The variables that influence stream conditions
§ Determining stream channel stability, bank erosion prediction, and measurement
§ Sediment relations
§ Potential versus existing stream conditions
§ Influence of riparian vegetation on channel stability
§ Integration of ecosystem concepts into field applications
The monitoring of vertical and horizontal and vertical stability, channel materials, sediment transport and hydraulics will be presented. The course includes hands-on techniques for field measurements, data analysis and interpretations and the use of replicate studies for verification and time trend analysis. Design and application of monitoring objectives and methods for channel stability and the collection and analysis of suspended and bedload sediment will also be covered. The course provides an integrated approach that introduces the fundamental principles of hydrology, hydraulics and fluvial geomorphology and describes the linkages among these sciences as they relate to river morphology. This course is a prerequisite to the Design Techniques Course

DAY ONE

· Reference Conditions - departure
· The Desired State: what do we measure
· Pattern parameters -- meander length ratio / belt width ratio / riffle slope-pool slope ratio maximum pool depth ratio / pool width riffle width ratio
· Habitat Features
·
Cover / substrate size / variation in depth and velocity
· Stability

o Definition of a stable river
o Adjustment processes
o Lateral adjustment - BEH/ shear stress ratings/vertical adjustment / headcuts /aggradation

Field Work

Pattern measurements
BEHI shear stress ratings

· Sediment
· Bedload versus suspended load sediment
· Measurement of transport rates
· Bedload / suspended
· Procedures for sampling bedload and suspended sediment
· Calculation of transport rates
· Bed material characterization - pavement and sub pavement

Field Work

· Bed material characterization
· Erosion Monitoring
· Scour
· Sediment transport measurements
· Helly smith hand suspended sediment sampler
· Scour chains / Bank Profiles / cross sections/ detailed pebble counts