Studying Mountain Streams (IMAGE) Case Western Reserve University Caption Case Western Reserve University visiting professor and researcher Nicholas Sutfin crossing St. Vrain Creek, a 32-mile-long tributary of the South Platte River in north central Colorado. Credit Nicholas Sutfin 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.