Bull Run River (IMAGE) Virginia Tech Caption Image of the Bull Run River that feeds the Occoquan Reservoir, an important source of water supply to Fairfax Water, a water utility serving about 2 million people in Northern Virginia and the home of Virginia Tech's Occoquan Watershed Monitoring Lab. Photo courtesy of Peter Vikesland for Virginia Tech. Credit Virginia Tech Usage Restrictions Credit Virginia Tech 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.