From there it runs along a ravine at the bottom of which flows the Potomac River . Approximately 100 yards across from the shoreline lies Offutt Island, an uninhabited piece of land that last week ...

Under Washington law, swimming in the Potomac River has been illegal since 1971 ... passed 85%; Kingman Island (on the Anacostia) passed 83%; and Thompson Boat Center (on the Potomac) passed ...