Table of Contents
Why is Nile a perennial river?
Explanation: While the floods of the two streams occur at the same time, the Blue Nile is a perennial stream, while the Atbara, as mentioned, shrinks to a series of pools in the dry season. When the Blue Nile is in flood, it holds back the White Nile water, turning it into an extensive lake and delaying its flow.
What is a seasonal river called?
Episodic Rivers They can also be thought of as seasonal or occasional rivers, and they are known as episodic because they only exist after an episode of a heavy downpour of rain.
How Nile river was formed?
A new study finds evidence that supports the latter theory: The Nile River may have emerged around 30 million years ago, driven by the motion of Earth’s mantle — the thick layer of rock between the Earth’s core and crust, a group of researchers reported on Nov. 11 in the journal Nature Geoscience.
Is Amazon perennial river?
Perennial rivers exist in all of the world’s continents except Antarctica, and some notable examples are the Amazon River, Hudson River, the Rhine, Indus River, Congo River, and the Nile River. Most of these rivers are both rain-fed and snow-fed, ensuring a continuous flow of water.
How did the Nile change on a seasonal basis?
While the White Nile at Khartoum is a river of almost constant volume, the Blue Nile has a pronounced flood season (late July to October) caused by the summer monsoon rains over the Ethiopian Plateau and the rapid runoff from its numerous tributaries; historically, it was this surge that contributed most to the annual …
Where is the Amazon River?
Brazil
The Amazon River is located in the northern portion of South America, flowing from west to east. The river system originates in the Andes Mountains of Peru and travels through Ecuador, Colombia, Venezuela, Bolivia, and Brazil before emptying into the Atlantic Ocean.
Why rivers flow during rainy season?
When that seasonal rain is not sufficient to keep the river flowing during the dry season, the river dries up. It will start flowing again when the wet season arrives. Therefore, by definition, seasonal rivers flow only during the rainy season.
How many dams are on the Nile river?
Over the past 50 years, six Nile Basin countries have built 25 hydroelectric dams. As of 2019, four dams were under construction with four more being studied. The Nile is not just a source of water. It is an exceedingly sensitive ecosystem that plays a role in the environmental and ecological balance of east Africa.
How Amazon River got its name?
The first European to explore the Amazon, in 1541, was the Spanish soldier Francisco de Orellana, who gave the river its name after reporting pitched battles with tribes of female warriors, whom he likened to the Amazons of Greek mythology.
What is the difference between the Nile River and Amazon River?
The Nile runs in a relatively straight line from start to the outlet, making it much easier to measure. The Amazon, on the other hand, only covers about 1,100 miles in a straight line distance, however, it spans out in a greater overall area coverage.
Where does the Nile River start and end in Africa?
Nile River. The Nile River flows from south to north through eastern Africa. It begins in the rivers that flow into Lake Victoria (located in modern-day Uganda, Tanzania, and Kenya), and empties into the Mediterranean Sea more than 6,600 kilometers (4,100 miles) to the north, making it one of the longest river in the world.
Why is the Amazon River so important?
The Amazon River plays a central role in the cultures and traditions of the people who live near it. What Is the Longest River in the World? It has only been since 2007 that the Amazon has been considered the longest river in the world.
What is the volume rate of water flow in the Amazon?
In fact, when considering the volume rate of water flow, the Amazon river is easily the largest. The Amazon has an average discharge of 209,000 cubic meters per second. To give you some perspective, the next on the list, the Congo River in Africa, has an average discharge of 41,200 m³/s.