Yangtze and Yellow

Yangtze River empties into the East China Sea to the Pacific. The length of its 5,520 kilometers. Basin area of ??1,800,000 square kilometers. On the banks of the Yangtze are very important economically towns and ports: Chongqing, Wuhan, Nanjing. Yangtze coast beginning in the central part of the Tibetan Plateau, merging from multiple sources, which originate from the glaciers. Coming out of the mountains, the Yangtze is a vast basin, which is called the Red Basin. Then she meets a much more low mountains of southeastern China. Yangtze River cuts through the numerous mountain ranges and massifs, and forms rapids, which are very difficult navigation. By entering the Great Chinese plain river splits into many branches, which sometimes form a lake expansion. These lakes are connected to the main channel of streams and channels and regulate the river flow. But at the same time they themselves depend on the level of the mainstream of the Yangtze, and the size and shape of their continuously changing. During the flood, some of the lake is huge and inundate most flat sections. At the confluence of the East China Sea forms the Yangtze delta, which is growing at about one kilometer over forty years. Yangtze mode characterized by high consumption of water throughout the year, which, apart from the monsoon summer rains, is supported by the melting of snow and ice in the origins and regulated in the lower reaches of the already mentioned numerous lakes. Significant impact on the water level downstream of the river have hot flashes. Under the influence of tidal water level daily rises to 4.5 meters, at an average annual fluctuations of up to 6 meters. Yangtze River is also a major transportation artery Noah China. Traffic on it begins above the town of Yibin, within the Red Basin. And along the lower reaches of the river to the city Wuhan rise ocean-going vessels. Yellow River - the second longest river in Asia. Its length is 4,845 kilometers. In contrast, the Yangtze, Yellow River flows through areas that are much poorer than the precipitation. She concedes and tributaries. The river begins in the Kunlun Mountains and the upper reaches of her character has a rapid flow. And in the middle course, skirting the old array Ord a, Huang forms a huge, roughly rectangular bend. Crossing the Loess Plateau, the river is saturated with a mass of suspended material, which is then deposited on the plain. In the upper and middle reaches of Yellow River in many places flows in narrow gorges, and has many rapids areas. The largest in its currents a river gets to the upper reaches of the mountains, and in the middle and lower reaches, it is almost devoid of tributaries. In the lower reaches of the Yellow River is wandering ing river. Suffice it to say that the most northerly position bed Huang for 600 years before Christ was to the north of Tyaitszinya, and the most southern - the latitude of Xuzhou. Significant changes of the lower reaches and mouth of the river occurred in the historical period at least. And always it caused great distress and cause millions of deaths. Constant walk the Yellow River and frequent flooding in the basin occur, because the river flows in its sediments above the surrounding terrain. And only a small increase of water level, so it is widely spread across the plain. Floods come after heavy monsoon rains in summer. In August and September, they often cause typhoons. In spring and early summer caused flooding may be the melting of snow in the mountains upstream. Almost complete destruction of forests around the river basin, and strong ice jams, which occur due to the fact that in the upper reaches of the river free of ice earlier than in the lowlands, increase the risk of flooding.