agricultural map runoff gage (IMAGE) Penn State Caption The location of the 52-square-mile Conewago Creek drainage within the Chesapeake Bay watershed is shown in this graphic. The stream is monitored by two U.S. Geological Survey gauging stations, that provided data for the research. Credit IMAGE: Patrick Drohan/Penn State Usage Restrictions non commercial use only 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.