Juvenile Chinook Salmon (IMAGE) NOAA Fisheries West Coast Region Caption New research examines whether juvenile salmon and steelhead die from delayed mortality from the stress of passing through dams on the Snake and Columbia rivers. Credit John R. McMillan/NOAA Fisheries Usage Restrictions CREDIT: John R. McMillan/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.