Ann Willis in Little Shasta (IMAGE) University of California - Davis Caption Ann Willis, a researcher with the UC Davis Center for Watershed Sciences, takes measurements on the Little Shasta River with colleague Rob Lusardi in 2017. Credit Joe Proudman/UC Davis Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC 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.