Sesan River Temperature (IMAGE) University of Washington Caption Using satellite data to monitor the surface temperature of the Sesan River over time, the team saw temperature drops that corresponded with the completion of major dams (labeled in red), but not minor dams (labeled in blue). During dry season of 2001, the Sesan River had a 1.8 F (1 C) temperature drop, which corresponded with the completion of the Yali dam. Then between 2008 and 2009, the temperature dropped again by another 3.6 F (2 C) after two more dams -- the Sesan 4 and the Plei Krong -- were completed. Credit Bonnema et al./Environmental Research Letters Usage Restrictions For reuse with appropriate credit. 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.