Mack Creek Stream Survey (image) USDA Forest Service - Pacific Northwest Research Station Share Print E-Mail Caption A researcher gathers stream data at Mack Creek, on the H.J. Andrews Experimental Forest in Oregon. Credit Tom Iraci, U.S. Forest Service Usage Restrictions None Share Print E-Mail 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.