Samantha Oliver at lake (IMAGE) University of Wisconsin-Madison Caption A new study by UW-Madison graduate student Samantha Oliver (above) says despite major environmental changes and water quality management efforts, most Midwestern and Northeastern lakes have not significantly degraded or improved over recent decades. Credit Courtesy of Samantha Oliver 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.