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rivers & streams

Rivers and Streams
Image: iStockphoto.com/JohnnyLye

Rivers and Streams

Our planet’s rivers and streams look like veins and arteries from above, and they support a great variety of plants and animals as they continuously flow in one direction.

Explore life along these waterways and how their inhabitants avoid getting washed downstream into the seas.

BBC
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How Wolves Change Rivers

How Wolves Change Rivers

Wolves have transformed the ecosystem and physical geography of Yellowstone. See how their presence caused changes in animal and plant populations, as well as the behavior of rivers. More...

Video
Sustainable Man
Rivers Are Life… No Kidding!

Rivers Are Life… No Kidding!

Healthy rivers make for a healthy planet for all those living on it. Explore parts of a river system to see how they affect each other — and us. More...

Interactive
The Nature Conservancy
Daylighting Takes Off as Cities Expose Long-Buried Rivers

Daylighting Takes Off as Cities Expose Long-Buried Rivers

Cities are opening up streams that once flowed beneath their streets. Investigate the many benefits of "daylighting" and why the waters went underground in the first place. More...

Article
National Geographic
Meanders

Meanders

Following a winding course, a river deposits soil and also erodes the banks along its way. Discover up close why and how this takes place. More...

Interactive
Wiley
Restoring Rivers

Restoring Rivers

The lifeblood of human civilizations, rivers keep thousands of other species alive, too. Learn what happens when our demand for river water outgrows the supply. More...

Article
National Geographic
Rivers Photos

Rivers Photos

From large, fast, and powerful to slow, muddy, and meandering, rivers run all over our planet. Take a look at some stunning photographic examples. More...

Images
National Geographic
Silent Streams

Silent Streams

Almost half the 573 animal species on the threatened and endangered list in the U.S. live in freshwater. Research how captive-breeding programs are trying to address that in Tennessee. More...

Article
National Geographic
‘Rivers on Rolaids’: How Acid Rain Is Changing Waterways

‘Rivers on Rolaids’: How Acid Rain Is Changing Waterways

The chemistry of river water in many parts of the U.S. has become more alkaline. Find out how acid rain created this curious phenomenon. More...

Article
NPR
Getting Your Feet Wet: A Day in the Life of a USGS Water Scientist

Getting Your Feet Wet: A Day in the Life of a USGS Water Scientist

Measuring a river’s water quality is the job for scientists with a specialty. Wade in with a hydrologist and a hydrotech for details in the Rappahannock River. More...

Profile
U.S. Geological Survey
Observe How Sediments Are Deposited

Observe How Sediments Are Deposited

You may step on gravel when you wade into a lake, but not when you touch the bottom farther out. See why this happens when a river flows into a lake. More...

Interactive
McDougal Littell
Scientist Profile: Aquatic Biologist

Scientist Profile: Aquatic Biologist

Find out why Carlos de la Rosa, an aquatic biologist, sees insects as the key to restoring the health of the Kissimmee River in Florida. More...

Profile
DragonflyTV/PBS
Stream and River Habitats

Stream and River Habitats

Join a Montana rafting trip and learn how a river creates a cliff and other geological features. Meet a member of one of the many creepy crawly organisms in this river habitat. More...

Video
HowStuffWorks
Dam Effects

Dam Effects

Dams change the course of a river and affect the surrounding environment. Identify the effects of a poorly run dam and how a well-run dam addresses them. More...

Interactive
Hydropower Reform Coalition
How Do Culverts Affect Plant Growth in Streams?

How Do Culverts Affect Plant Growth in Streams?

A culvert artificially changes a stream’s natural course. Research the effects on soil nutrients as seeds also move from their original location. More...

Activity
education.com

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