Bear Creek Watershed (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption The Bear Creek watershed in Oak Ridge, Tenn., was a a crucial site for the early development of nuclear weapons under the Manhattan Project and harbors spectacular geochemical gradients. Credit Courtesy of Oak Ridge National Laboratory 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.