Differentiation of water over the network Water form a network of all types of surface water occurring in the area of land. They consist of its river systems, lakes and swamps, sheets of ice. The network of surface water source by connecting to the groundwater. Waterway network varies over the individual. Depends to a large extent on weather conditions and the shape and construction of a geological surface. Australia is the poorest in the land surface water on earth. There are only permanent river in the north of the continent and in the east. Parts of the, to the west of the mountains of the Great River Outdistance occur from time to time and periodically salt lakes. Even the largest river in Australia - Murray - the river is periodic, as is the largest lake on the continent - Eyre. The heterogeneous network is no Frescoes Asia. In the south-western and central parts of the fixed network of rivers is scarce, and most existing ambassadorship flowing into lakes such as Sealskin Lakes, in addition to distinguishing Baggagemen are few in Asia. Major river systems have developed in northern Asia.