The Rhine emerges from Lake Constance, flows generally westward, as the Hochrhein, passes the Rhine Falls, and is joined by its major tributary, the river Aare. The Aare more than doubles the Rhine's water discharge, to an average of nearly 1,000 m3/s (35,000 cu ft/s), and provides more than a fifth of the discharge at the Dutch border. The Aare also contains the waters from the 4,274 m (14,022 ft) summit of Finsteraarhorn, the highest point of the Rhine basin. The Rhine roughly forms the German-Swiss border from Lake Constance with the exceptions of the canton of Schaffhausen and parts of the cantons of Zürich and Basel-Stadt, until it turns north at the so-called Rhine knee at Basel, leaving Switzerland.
After the Rhine emerges from Lake Constance, what direction does it flow? What is the major tributary of the Rhine? How much water does the Aare give to the Rhine? Where is the highest point of the Rhine basin? Where is the so-called Rhine Knee? When the Rhine emerges from Lake Constance which way does it flow? What is the major tributary for the Rhine?  The Rhine gets how much water from the Aare? What is the highest point of the Rhine basin called? There's a rough border between Switzerland and what other country formed by the Rhine?