What’s the Difference: River vs Stream Explained

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We hear the terms River and stream are used interchangeably, but despite their similarities, there is a difference between them. Both rivers and streams are vital for life on this planet, so what is the difference between a stream and a river?

When enough precipitation falls from the sky, the ground cannot absorb it. Excess water is pulled by gravity from higher elevation to lower elevation down mountains, slopes, and slopes. Almost all streams and rivers are formed by this type of runoff, although some originate from glaciers or springs.

Often the precipitation collects and forms a lake at a higher elevation. A resultant river emerges when the lake regularly exceeds its capacity, which releases water downstream. Rivers and streams are responsible for supporting huge ecosystems as they wind fresh water from a square to another.

What exactly are the differences and similarities between a river and a stream? We will explore the details now.

River vs Stream explained

River Flow
Fresh water Yes Yes
Able to flood Yes Yes
Flow in one direction Yes Yes
Flow downhill Yes Yes
one needs the other Rivers need streams Streams feed rivers
Drain watersheds Yes Yes
Cut Bigger Smaller

River vs Stream explained:

  • Rivers and streams carry fresh water.
  • Rivers and streams will be flooded.
  • Streams and rivers flow in one direction.
  • Streams and rivers flow downstream.
  • Rivers depend on streams to fill them.
  • Streams and rivers both help drain watersheds.
  • Rivers are bigger than streams.

What is a river?

Peace River - Canada
Rivers have well-defined banks and channels.

mike8816/Shutterstock.com

Rivers are natural waterways which circulate from one place to another in a well-defined direction channel. They come from a source, like a powered stream Lakeand they continually grow in size as they are joined by their tributaries.

Most rivers do not originate from one place, although they often originate from a lake. Instead, there is a network of channels of varying sizes that continually join together until a the river is forming. Streams play a major role in this channel network.

Sometimes two rivers meet and become one river, called a confluence. The Sacramento River and the American River connect to become the Sacramento River in California. There are many examples of this in the country and around the world.

In general, human development around a river has a negative impact on the health of the river. It is possible to study the development of civilizations throughout recent history to understand if, when and how the health of a river deteriorated due to Human use.

What is a stream?

Streams feed rivers.

Enrique Alcala/Shutterstock.com

Streams are more temporary than rivers, although they help bring water into rivers. This does not mean that all flows are temporary; many flow all the time, whether it is the rainy season or not. Rivers generally originate from fanned waterways, and many of the actors in these fanned waterways are streams.

Rivers need streams to exist. Streams are essential to provide enough fresh water for the formation of a river bed. The place where enough streams have come together to form something big enough to be a river is known as the confluence.

There is a nuance in the language used to describe streams and flows too. While streams and streams may seem like the same thing, streams, in general, are a bit more well-defined and permanent. Streams are formed by streams, and these streams then continue into a lake or a river.

This does not mean that only streams flow into larger water sources. They are both slightly different in functionality regarding their role in moving freshwater precipitation from its source to the ocean.

What is a broken river?

A broken river is an underground river that flows over land at certain points in its course and plunges underground through other parts of its course. This almost always happens when the riverbed is made up of limestone. Limestone is extremely porous and allows water to seep through.

Rivers sometimes create caves. If water is pushed underground through porous rock for some reason, a cave system can be created similar to the creation of canyons. The moving water eventually erodes the stone enough to create a space for the water to flow through.

The Santa Fe River in Florida behaves like this. It reaches a bed of limestone which absorbs water and pushes it underground. It re-emerges where the limestone ends about 3 miles downstream.

These underwater rivers and the caves they create are not uncommon in North Florida. Special life forms thrive in underground rivers like cave fish.

Water that is absorbed from the surface into the ground does not rush through the stone. On the contrary, it seeps in, which causes the water in the river to stop. There is not a rush of water pouring into an underground funnel.

The place where the interrupted river dips below the surface is called a sinkhole.

The Puerto Princesa River in the Philippines is another example of this phenomenon. Precipitation seeps through a huge layer of limestone into an underground river that empties into the ocean below the surface.

What is eutrophication and why is it important?

Atchafalaya River
Eutrophication can be caused by bridges.

iStock.com/Sean Gardner

Eutrophication is the process by which a stream or river contains too many nutrients. This causes an overabundance of plant life that suffocates the ecosystem and kills most of its inhabitants except for the abundant flora.

Human intervention in the structure of a river and river system is usually what causes eutrophication. Streams and rivers are blocked by developments such as roads and crossings, impeding the natural flow of the river. This prevents organisms from moving to different locations and also causes accumulation of nutrients and sediments.

Climate change is also a driver of eutrophication as streams and rivers in the United States are slowly warming. If this continues, it will lead to devastating consequences for ecosystems while setting the stage for eutrophication. Entire habitats can be muffled or modified.

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