Deploying Acoustic Receivers (IMAGE) DOE/Pacific Northwest National Laboratory Caption PNNL researchers place yellow acoustic receivers into the Columbia River. The receivers are part of Juvenile Salmon Acoustic Telemetry System, which is helping track the movement of tagged fall Chinook salmon on the Clearwater River in Idaho. Credit Pacific Northwest National Laboratory Usage Restrictions Please credit source as Pacific Northwest National Laboratory License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.