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Flow of a River - Hydrology
Watersheds

Click the map to see Minnesota's watersheds

A stream's watershed (also called its basin or catchment) is the land area that drains into that particular stream. As your point of reference moves downstream, the length of the stream and the watershed feeding it grows in size.

As one stream joins another, the watershed jumps in size as two watersheds are joined. Thus a watershed grows to great proportions. The watershed of the Mississippi River at its mouth stretches from the ridge of the Appalachians to the east slope of the Rockies. It drains all or parts of 31 states and two Canadian provinces-a total of 41 percent of the continental United States.


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Introduction
Flow
Description
Water cycle
Watersheds
Stream order
Factors of flow
Consequences
Stories
Shape
Connections
Quality
Life
Summary
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