Rosemary Carroll (IMAGE) Desert Research Institute Caption Desert Research Institute scientist Rosemary Carroll measures stream discharge in the East River, Colorado. Credit Kenneth H. Williams Usage Restrictions This photo may be used with appropriate caption and credit. 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.