A Watershed:Rivers, Streams, Lakes and

Ponds

Write everything in red

Watershed

A watershed, or drainage basin includes all of the land that drains into a river or bay either directly or through its tributaries,

The high land that separates one river valley or watershed from the next is called the divide

Satellite View: The

Great Divide

The Great Divide

Young Rivers

• Generally straight, narrow course of the river.• Waterfalls• Niagara Falls

Old Rivers• Generally flat areas• Wide flood plains• Meanders

• Owens Valley, CA

Cutbank & point bar

• Point bar – sediments get deposited• cutbank – sediments get eroded

Meander: Old River or New River?

What do you think will happen next?

What happens when you build a city on a flood plain?

Cincinnati 1997

Lake Turnover

Pond or Lake? Explain which one it is to your shoulder partner.

Why is this a lake? Discuss the reasons with your table.

Talk with your shoulder partner, what do you think is going on in this lake/pond?

What Lake is this, and what is it also known as?

Lake ?

A Man Made Levee

A Natural Levee

Natural Levee

Oxbow Lake http://www.geocaching.com/seek/cache_details.aspx?wp=gcqv5mhttp://www.sln.org.uk/geography/oxbow

Oxbow lake and Chippewa River, Wisconsin

What is this? Ask your shoulder partner

AluvialFans

In your notebook, explain and draw the steps in the formation of an oxbow lake.