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The Buzz

What's The Difference?: River Vs. Stream Vs. Creek




(Photo by Chad Merda)

The sound of flowing water can be soothing and relaxing, but does it matter if that water flows in a river, a creek or a stream? When it comes to relaxation, probably not, so don't let getting the nomenclature right stress you out.

In truth, there are no technical differences between rivers, streams and creeks, according to the United States Geological Survey. While there are no strict definitions to distinguish these waterways from one another, we tend to reserve the term river for the largest of these flowing bodies of water while creek is used for the smallest and stream often applies to waterways that are in between.

In particular, the terms stream and river are often used interchangeably, and both are broadly defined as a body of water that flows on Earth's surface, according to National Geographic. All these flowing waterways require gravity to carry water from a point of higher elevation to a point of lower elevation.

Rivers and streams are, by definition, ribbon-like bodies of water. Ribbon-like may imply rivers are narrow, and they certainly are when compared to lakes and oceans, but several of the world's widest rivers are more than 1 mile wide. At its widest point, the Amazon is more than 6 miles wide during the dry season. In the rainy season, its width increases to more than 24 miles, Phys.org reports

Rivers can be impressively long as well. The world's longest river is the Nile, measuring 4,132 miles long, followed by the Amazon at 4,000 miles long, the geological survey reports. In the United States, the longest river is the Missouri River, traversing 2,540 miles. The Mississippi River measures in at 2,340 miles long.

Where does all the water that flows in rivers, streams and creeks large and small come from? In the most basic sense, the water in our rivers all began as precipitation — rain, snow, sleet, hail — falling from the sky, according to the geological survey. 

Water falls directly into our rivers, streams and creeks and their tributaries when it rains and also flows into the waterways from water runoff. Some of that rainwater and precipitation also trickles into the groundwater supply, which can then seep into local waterways, according to National Geographic.

The rivers, streams and creeks that meander across Earth's surface eventually flow into the world's oceans. This happens because the oceans are at sea level, and gravity pulls the water to lower elevations, USGS reports.

Along the way, the water in our rivers creates vital habitat for all manner of plants and animals. In Illinois alone, hundreds of species are dependent on creeks, streams and rivers to meet their requirements for survival, according to the Illinois Department of Natural Resources. We also, of course, rely on rivers for recreation — a place for fishing, boating or simply relaxing. 

While rivers often unite people because they are important for everything from transportation to food to recreation, they are also natural dividing lines, often serving as borders between countries and, here in the America, between states, according to NASA's Earth Observatory. Across the world, rivers are used for 23% of international borders, 17% of state and provincial borders and 12% of county borders. 

Part of our nation's southern border with Mexico is formed by the Rio Grande, and much of Illinois' boundaries with neighboring states are formed by rivers. Our western border with Iowa and Missouri is formed by the Mississippi River, which is the longest river in the state at 581 miles, according to the Illinois Department of Natural Resources. The Ohio River forms part of Illinois' southern border with Kentucky, and the Wabash River forms part of the state's southeastern border with Indiana.

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