Mountain Stream (IMAGE) U.S. Geological Survey Caption This is a typical headwater mountain stream that will provide cold-water species climate refugia this century. Credit Dona Horan, U.S. Forest Service Usage Restrictions None 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.