Acoustic systems for the measurement of streamflow

Open-File Report 82-329
By:  and 



Very little information is available concerning acoustic velocity meter (AVM) operation, performance, and limitations. This report provides a better understanding about the application of AVM instrumentation to streamflow measurment. Operational U.S. Geological Survey systems have proven that AVM equipment is accurate and dependable. AVM equipment has no practical upper limit of measureable velocity if sonic transducers are securely placed and adequately protected, and will measure velocitites as low as 0.1 meter per second which is normally less than the threshold level for mechanical or head-loss meters. In some situations the performance of AVM equipment may be degraded by multipath interference, signal bending, signal attenuation, and variable streamline orientation. Smaller, less-expensive, more conveniently operable microprocessor equipment is now available which should increase use of AVM systems in streamflow applications. (USGS)

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Acoustic systems for the measurement of streamflow
Series title Open-File Report
Series number 82-329
DOI 10.3133/ofr82329
Edition -
Year Published 1982
Language ENGLISH
Publisher U.S. Geological Survey,
Contributing office(s) Oregon Water Science Center
Description viii, 53 p. :ill., maps ;28 cm.