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Highflow measurement downstream of a dam

By New England Water Science Center
A manned boat is pulled back and forth across the river on a static line to make smooth transects for an ADCP measurement.
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Detailed Description

High flow measurements are important is refining and confirming the validity of the high end of discharge ratings. Here, a technician moves the manned boat back and forth across the river channel with an ADCP tethered to the side of the boat. 

Sources/Usage

Public Domain.