the best science on the web about
watersheds

Watershed
Image: iStockphoto.com/SanderStock

Watershed

Rain falling to the ground flows through a watershed — an area of land with streams and rivers — on the way to a larger body of water.

Often vast, watersheds affect the water flow. En route to the Gulf of Mexico, the Mississippi River system provides water for millions in the United States. Investigate threats to the health of some watersheds.

National Geographic
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The Watershed Game

The Watershed Game

For each scenario, do your best to clean up a different type of polluted watershed. See how the world wins when you ace this. More...

Game
CSERC
Where Does Your Water Come From?

Where Does Your Water Come From?

Before you turn on your faucet for a cool sip of water, use this map to locate the rivers, lakes, and streams that supply your drinking water. More...

Interactive
The Nature Conservancy
Characteristics of Watersheds

Characteristics of Watersheds

Explore how shade, protected stream banks, a winding course for the water, and biodiversity contribute to a healthy watershed. More...

Article
The Ohio State University
Drainage Divide

Drainage Divide

Major, minor, and continental — three ways to divide a region. Investigate the similarities and differences of ways to separate watersheds. More...

Article
National Geographic
Make a Watershed Model

Make a Watershed Model

Mountains, hills, valleys, more physical features — and water. Build your own model watershed to discover how the landscape affects the flow of water. More...

Activity
Carleton College
Scientist Profile: Mud Scientist

Scientist Profile: Mud Scientist

Laura Triplett studies how clear cutting of forests by early settlers and today's large developments affect the environment and the water quality of Minnesota's St. Croix River. More...

Profile
DragonflyTV/PBS
Surf Your Watershed

Surf Your Watershed

Where does the rain flow once it falls near you? Find your local watershed and the groups that help keep it clean and healthy. More...

Interactive
Environmental Protection Agency
The Surfrider Foundation Explains Watersheds 101

The Surfrider Foundation Explains Watersheds 101

From the mountains to the seas, water flows downhill. Watch how the water cycle and watersheds work together to keep the moisture moving. More...

Video
AAAS
Watershed Demo

Watershed Demo

Witness how human land use affects water's speed, course, and quality — including unwanted items washing into it as it moves though a landscape. More...

Video
NOAA/EstuaryLiveTV
What’s a Watershed?

What’s a Watershed?

Carrying rain and snowmelt over the land, our watersheds took shape hundreds of millions of years ago. Research what created these areas and how time and geology take a toll on them. More...

Interactive
WatershedAtlas.org

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