Devils Creek (IMAGE) University of California - Santa Cruz Caption The amount of sediment a river transports is a key factor in determining river channel geometry and the size of the sediment grains on the riverbed. This photo shows Devils Creek in Big Sur. Credit Dan Stone Usage Restrictions For use only with news coverage of this research 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.