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Hydrologic Technician measuring streamflow using ADCP in Wisconsin

Detailed Description

Hydrologic Technician Matt Bach measuring streamflow day after a rain event at USGS streamgage 04085078, DUTCHMAN CREEK AT HANSEN RD AT ASHWAUBENON, WI, using an Acoustic Doppler Current Profiler (ADCP). The ADCP measures water currents by transmitting "pings" of sound at a constant frequency into the water. As the sound waves travel, they ricochet off particles suspended in the moving water, and reflect back to the instrument.


Public Domain.