Summary

Description

The surficial bed-sediment facies, herein after referred to as the sediment facies, quantitatively describes the dominant sediment substrate on the surface of the river bed. Sediment facies categories were based on the grain size distribution of Wentworth (1922) which included the following ranges or combination of ranges: gravel (2-64mm), sand (0.063-2mm) and silt/clay (less than 0.063mm). An underwater video monitoring system UVMS was used to collect visual samples of the sediment facies determine the type and dominant size of the substrate, and record the geographical position of the substrate. UVMS data was collected intermittently at each site from 2006 – 2012.