Blueness Index Captured at Lake Tahoe (image) University of California - Davis Share Print E-Mail Caption UC Davis Tahoe Environmental Research Center postdoctoral scholar Shohei Watanabe collects data from a UC Davis-NASA research buoy to measure Lake Tahoe's blueness. Credit Karin Higgins/UC Davis Usage Restrictions Provide credit. 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.