Measuring discharge with acoustic doppler current profilers from a moving boat. : En56-302/2021E-PDF

"The use of acoustic Doppler current profilers (ADCPs) from a moving boat is now a commonly used method for measuring streamflow. The technology and methods for making ADCP-based discharge measurements are different from the technology and methods used to make traditional discharge measurements with mechanical meters. Although the ADCP is a valuable tool for measuring streamflow, it is only accurate when used with appropriate techniques. This report presents guidance on the use of ADCPs for measuring streamflow; this guidance is based on the experience of U.S. Geological Survey and Water Survey of Canada employees and published reports and papers. The guidance is presented in a logical progression, from pre-deployment planning, to field data collection, and finally to post-processing of the collected data. Acoustic Doppler technology and instruments are discussed to highlight their advantages and limitations. More in-depth, technical explanations of how an ADCP measures streamflow and what to do when measuring in moving-bed conditions are presented in the appendices. ADCP users need to know the proper procedures for measuring discharge from a moving boat and why those procedures are required, so that when the user encounters unusual field conditions, the procedures can be adapted without sacrificing the accuracy of the streamflow-measurement data"--Abstract, page 1.

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publications.gc.ca/pub?id=9.917943&sl=1

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