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By now you have probably heard of SonTek's latest and greatest ADCP - the RS5. This hand-sized, "grab-and-go" instrument and is ideal for collecting discharge data in small rivers and streams. But if you're already a SonTek customer, or familiar with the acoustic Doppler technology in general, you might ask yourself, why would I use the RS5 when I already have another system like a RiverSurveyor-M9, or maybe even a FlowTracker. Well in this video, we're going to give you 5 1/2 reasons why you would want to go with the RS5 over other flow sensors.