Inn

Inn (ancient Enus), a river of Germany, the most important Alpine affluent of the Danube, rises in the south of the Swiss canton of Grisons, and flows north-east through the valley of the Engadine, and onwards through Tyrol and Bavaria, to its junction with the Danube at Passan in a stream (320 yards) broader than that of the Danube. Its total course is 317 miles. In Bavaria its bed is broad and sown with islands.