Examining Juvenile Salmon (IMAGE) NOAA Fisheries West Coast Region Caption Biologists examine juvenile salmon as they pass through John Day Dam on the Columbia River. Credit Ritchie Graves/NOAA Fisheries Usage Restrictions CREDIT: Ritchie Graves/NOAA Fisheries 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.