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Streams and Rivers

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

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  1. Streams and Rivers Video: Grand Canyon

  2. Streams(all notes) • Any flowing water. • The main agent of erosion on Earth.

  3. Discharge • The amount of water in a stream. • More discharge = EROSION.

  4. Stages of Stream Formation • Youthful • Mature • Old Age

  5. Youthful • High elevations • V-shaped valley • Rapids and waterfalls present • No floodplain • Capable of moving very large sediment (i.e. boulders)

  6. Youthful

  7. Mature • A few “S”-shaped curves = Meanders • Floodplains • Not capable of moving large sediment

  8. Mature

  9. Old Age • Many meanders • Very large floodplain • Oxbow lakes • Can only carry smallest sediment: silts and clays

  10. Old Age

  11. Old Age

  12. Oxbow Lake

  13. Oxbow Lake

  14. 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

  15. 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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