P/N 95B-6131-00 (April 2022) RiverRay Deployment Guide
Page 18
EAR-Controlled Technology Subject to Restrictions Contained on the Cover Page.
Glossary of Common Terms
Actors:
• Field hydrologist/Technician
• Data Analyst Expert (DAE )
Data Collection Terminology:
• Left/Right Bank – The Left bank is defined as the bank that would be on your left side if you were
looking downstream.
• Transect – Data collection across the width of the river either from the Left bank to the Right
bank or vice versa. (Sometimes referred to as a “Pass” across the river)
• Measurement – A collection (even number) of four or more Transects made of up of an equal
number of Transects from Left to Right as Right to Left.
• Measured Discharge – The average of the discharges from the four (or more) transects.
Site/Measurement Conditions:
• Moving Bed/Moving Bottom – Movement downstream (typically) of near bed sediment. Moving
Bed conditions will bias bottom-track velocities, which assume the streambed is stationary.
• Directional bias – This occurs when the discharges measured for transects from the left bank to
the right bank are consistently either greater than or less than discharges measured for transects
made from the right bank to the left bank.
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