Four long rivers in the world flow into the ocean. Continent)

1 The Nile flows from Africa to the Mediterranean Sea from south to north.

Located in the northeast of Africa, the Nile is an international river. Originated in the highlands of Burundi in East Africa south of the equator, the mainstream flows through Burundi, Rwanda, Tanzania, Uganda, Sudan and Egypt, and finally flows into the Mediterranean Sea. The tributaries also flow through Kenya, Ethiopia, parts of the Democratic Republic of the Congo, Eritrea and other countries. With a total length of 6,670 kilometers, the main stream is the longest river in the world from the source of the Kagala River to the estuary. The basin covers an area of about 2.87 million square kilometers, accounting for more than one ninth of the African continent. The average annual runoff of the estuary is 8 1 100 million m3.

The Amazon River flows into the Atlantic Ocean.

Also translated as Amazon River; Spanish is Rio Amazon.

The largest river in South America, with the largest flow and the widest basin in the world. It is about 6,400 kilometers (4,000 miles) from the birthplace of the Kaiali-Apurimac river system in Peru, which is slightly shorter than the Nile. Its westernmost source is the towering Andes less than 160 km (100 mile) from the Pacific Ocean, and its mouth is in the Atlantic Ocean.

Amazon River is located in the north of South America, with the widest drainage area and the largest flow in the world. Originating from the eastern slope of Cordillera in the Andes of Peru, there are two sources: one is the Maranon River, which is usually regarded as the positive source of the Amazon River, and it originated in the high mountain area of the Andes of Peru; The other is the Ukaj-Ali River, whose source is called the Appuhn Mark River. After crossing the towering mountains, the maranhao River and the Wu Kaiali River meet near Nota, Peru. The main tributary of the Amazon River winds through seven countries in South America. The Amazon River from Iquitos, Peru to Manaus, Brazil is called Solimos River, and the section from the mouth of the Negro River to the Atlantic Ocean is called Amazon River. The Amazon River flows eastward through northern Brazil and empties into the Atlantic Ocean near Marajo Island.

The Yangtze River flows into the Pacific Ocean.

Jiang (Yangtze River; The Yangtze River is the longest river in China and the third largest river in the world. 200 1 Under the auspices of Liu Shaochuang, an expert from the Institute of Remote Sensing Application, Chinese Academy of Sciences, satellite remote sensing images were used for measurement and calculation, and the measurement results were accurate to one decimal place. The measured length of the Yangtze River is 62 1 1.35438+0 km. Its research team used nearly 40 satellite images covering the main stream of the Yangtze River, which were taken by the American Earth Resources Satellite with a resolution of 30 meters. The calculation method is that the center line along the Yangtze River is measured three times in the forward direction and three times in the reverse direction, and the result is obtained after many computer operations and geometric corrections.

This study takes Dangqu as the source of the Yangtze River. Specifically, the focal location of Dangqu is 94 degrees 35 minutes and 54 seconds east longitude, 32 degrees 43 minutes and 54 seconds north latitude and 5042 meters above sea level. Dangqu (source to Nangji Balong) is 360.8 kilometers, Tuotuo is 357.6 kilometers, Tongtian River is 787.7 kilometers, Jinsha River is 2322.2 kilometers, and Yibin is 2740.6 kilometers below. we

Generally called 6300 km or 6370 km. The total area of the river basin is1800,000 square kilometers, and the annual water inflow into the sea is about 960 billion cubic meters. The basin is located between 24 30 ′ and 35 45 ′ north latitude and 90 33 ′ and 65 438+065 438+02 25 ′ east longitude, with an area of 65 438+800,000 square kilometers (excluding Huaihe River Basin), accounting for about 65 438+0 of the total land area of China. Ranked third in the world. It has a long history. Together with the Yellow River, it has become the cradle of the Chinese nation and nurtured generations of Chinese sons and daughters. It is called "Mother River".

The Mississippi River flows into the Gulf of Mexico.

The fourth longest river in the world is also the longest river in North America, with the widest drainage area and the largest water volume. Located in south-central North America. "mississippi" is a transliteration of English mississippi, which comes from the Algonquin language of Indians. "Miss" and "Spike" mean "big, old and water" respectively, and "Mississippi" means "big river" or "old man river". The mainstream originates from Lake Tasca, west of Lake Superior, which is 50 1 m above sea level in the northwest of Minnesota, USA, and flows southward through the central plain and into the Gulf of Mexico. The total length is 3950 kilometers; It starts from the source of the Missouri River, the largest tributary of the eastern slope of the Rocky Mountains, with a total length of 6,262 kilometers, ranking fourth in the world. The basin starts from the vicinity of the Great Lakes in the north, reaches the Gulf of Mexico in the south, connects the Appalachian Mountains in the east and the Rocky Mountains in the west, covering an area of 3.22 million square kilometers, accounting for about 1/8 of the North American area. It gathers about 250 tributaries. The tributaries on the west coast are more and longer than those on the east coast, forming a huge asymmetric dendritic water system. Abundant water, the average annual flow near the estuary reaches 6.5438+0.88 million cubic meters per second.

The source from Lake Ai Tasca to Minneapolis and Sao Paulo is the upper reaches of the Mississippi River, with a total length of 1, 0 10 km, low terrain and slow water flow. There are many glacial lakes and swamps on both sides of the river, and most lakes form rapids and waterfalls and then flow into the mainstream. Near Minneapolis, the river flows through the canyon rapids with a length of 1.2km and a drop of 19.5m, forming the famous San Antonio Waterfall. Along the way, tributaries such as the Minnesota River converge. The middle reaches of the Mississippi River extend from Minneapolis and Sao Paulo to Cairo at the mouth of Ohio, with a total length of 65,438+0,373 kilometers. The Mississippi River flows into Chippewa River, Wisconsin River, Des Moines River, Illinois River, Missouri River and Ohio River. To the north of St. Louis, the riverbed is steep and there are many rapids and rapids; In St. Louis and its south, the river bed slope decreases and the valley widens. Below Cape Terrado in Phuket, the curvature of the river is obviously increased, the river valley is wide, and the width of the Ohio estuary reaches 24 kilometers. Below Cairo is the lower reaches of the Mississippi River, about 1567 km long. The main tributaries are the White River, Arkansas River and Reed River. Rivers mainly flow through plain areas, covering a wide area, generally 730 ~ 1370 meters. The riverbed has a small slope and a slow winding, and there are many oxbow lakes and sandbars. There are six tributaries in the estuary, which are about 30 kilometers long and shaped like bird feet. 80% of the river flows into the sea through three main branches: Southwest Waterway, South Waterway and Alo Dehydration Road. The average annual sediment discharge of the river is 495 million tons, which accumulates in the estuary into a huge bird's foot delta with an area of 26,000 square kilometers, and continues to extend to the Gulf of Mexico at an average annual rate of 96 meters.