PREVIOUS

Stream Flow

NEXT

Michigan Environmental Education Curriculum
The Watershed Concept

Runoff that is not extracted from the land surface by evaporation and transpiration is delivered to streams, lakes and oceans. Changes in stream flow over time can be illustrated using a hydrograph (= water picture). The flat portion of the hydrograph is called baseflow and represents inputs to the stream from groundwater. The portion of the hydrograph above baseflow is called direct runoff and indicates the presence of a rain or snow melt event.

Hydrograph

Start > Title > Site Map > Credits > Glossary > Help
Michigan Tech > Tech Alive > Series Index > Michigan Environmental Education Curriculum > Module Index > Water