There is a possibility that the name might have meant 'dark' or 'darkness' or even 'dark gray.' The river defined three seasons of four months: 'Inundation' and 'Emergence' (November-March) when the land reappeared and could be cultivated, and … Rivers also provided ancient societies with access to trade -- not only of products, but ideas, including language, writing, and technology. Lake Itasca is the primary source of the Mississippi River. Along with amazing technological advances, the Industrial Revolution of the mid-19th Clay can cause rivers to be murky whiteuddy brown, or yellow. It is bounded on the South by the Atlantic Ocean, to the North by the Anambra, Imo and Abia States, to the East by Akwa Ibom State and to the West by the Bayelsa and Delta States. After heavy storms, many rivers run brown from all the runoff flowing into the river. Thanksgiving Day is a national holiday in the United States, and Thanksgiving 2020 occurs on Thursday, November 26. Erosion from river banks brings soil into the river, changing the color. River-based irrigation permitted communities to specialize and develop, even in areas lacking adequate rainfall. Large rivers don't start off large at all, but are the result of much smaller tributaries, creeks, and streams combining, just as tiny capillaries in your body merge to form larger blood-carrying arteries and veins. rivers.) Approx. The passage where the river flows is called the river bed and the earth on each side is called a river bank. lengthRiver Source Outflow mi. For those cultures that depended on them, rivers were the lifeblood. A river begins on high ground or in hills or mountains and flows down from the high ground to the lower ground, because of gravity.A river begins as a small stream, and gets bigger the farther it flows. There have been a few controversies on what is the exact source of the Mississippi. Rivers of plastic 1: Yangtze River. Water and air pollution have altered the course of the earth’s history. A river is a stream of water that flows through a channel in the surface of the ground. The Yangtze is Asia's longest river and the third-longest river in the world. Algal blooms are natural occurring overgrowths of … The River Thames derives its name from Tamesas, which is a Brittonic Celtic name. Its capital is Port Harcourt. The origin of the name is shared by many other rivers found throughout Britain such a the River Tamar, located at the border between Cornwall and Devon. The river flows 3,770 km into the Gulf of Mexico. The following table lists the principal rivers of the world including the name, source location, outflow, and approximate length. (See Rivers of the United States for other U.S. The mighty river featured in this image is called the Yarlung Tsangpo as it courses through the Tibetan Autonomous Region of China. "To achieve this, it will be necessary to improve the waste management and raise public awareness for the issue. In 1621, the Plymouth colonists … In fact, there have been a number of expeditors who could not agree on the exact source of the rivers. Last year the National Green Tribunal introduced a ban on disposable plastics in Delhi, while non-biodegradable plastic bags are banned in many states.“Halving the plastic input from the catchment areas of these rivers would already be a major success," says Schmidt. History and Controversies. The Nile is the world's longest river stretching 6,690 kilometers. Rivers State is one of the 36 states of Nigeria.