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Streams and Rivers. Video: Grand Canyon. Streams (all notes). Any flowing water. The main agent of erosion on Earth. Discharge. The amount of water in a stream. More discharge = EROSION. Stages of Stream Formation. Youthful Mature Old Age. Youthful. High elevations V-shaped valley

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Streams and rivers

Streams and Rivers

Video: Grand Canyon


Streams all notes
Streams(all notes)

  • Any flowing water.

  • The main agent of erosion on Earth.


Discharge
Discharge

  • The amount of water in a stream.

  • More discharge = EROSION.


Stages of stream formation
Stages of Stream Formation

  • Youthful

  • Mature

  • Old Age


Youthful
Youthful

  • High elevations

  • V-shaped valley

  • Rapids and waterfalls present

  • No floodplain

  • Capable of moving very large sediment (i.e. boulders)



Mature
Mature

  • A few “S”-shaped curves = Meanders

  • Floodplains

  • Not capable of moving large sediment



Old age
Old Age

  • Many meanders

  • Very large floodplain

  • Oxbow lakes

  • Can only carry smallest sediment: silts and clays






Stream load sediment carried in a stream
Stream Load –Sediment carried in a stream

  • Rolling and Bouncing of large sediment

  • Saltation of sand sized particles

  • Suspension of silt and clay

  • Dissolved salts

    Animation


Terms to know

Alluvial fan

Base level

Bed load

Channel

Delta

Dissolved load

Tributaries

Erosion

Floodplain

Groundwater

Levee (natural)

Meander

Oxbow lake

Rapids

River

Stream

Suspended load

Waterfall

Terms to Know


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