Lech (river) stony". On more than one occasion, historic events have been decided on the banks of this river. Lech (river) The Lech (, "Licca") is a river in Austria and Germany. It is a right tributary of the Danube in length with a drainage basin of . Its source is located in the Austrian state of Vorarlberg, where the river rises from lake Formarinsee in the Alps at an altitude of . It flows in a north-north-easterly direction and crosses the German border, forming the Lechfall, a waterfall; afterwards the river enters a narrow gorge (the Lechschlucht). Leaving the Alps, it
River systems of Thailand divides into two major branches, the " Tiền Giang" (Front River) and "Hậu Giang" (Back River). These in turn enter the South China Sea through nine estuaries. The following are the principal tributaries of Mekong River which flow through Thailand (tributaries entirely outside the Thai border not shown). The Mekong drains a considerable portion of northeast Thailand. In terms of Thai territory drained, it is second only to the Chao Phraya system. The Salawin River rises in Tibet (Tibetan: རྒྱལ་མོ་རྔུལ་ཆུ།) after which it flows through Yunnan, where it is known as the "Nujiang" River (), although either name can be