Wednesday, 28 August 2013

Water on the Land - Characteristics of the Upper, Middle, and lower courses

A river is split up into three sections: the Upper course, the Middle course, and the Lower course.

Upper Course:
-Characteristics

  • Steep, V-shaped valleys
  • Narrow/shallow channel
-Features
  • V-shaped valleys
  • Interlocking Spurs
  • Waterfalls
  • Gorges
  • Downward erosion
Middle Course:
-Characteristics
  • Open, gentle sloping valley with flood plain
  • Wider/deeper channel
  • More suspended sediment
-Features
  • Meanders
  • River Cliffs
  • Slip off slopes
  • Lateral and Downwards erosion
Lower Course:
-Characteristics
  • Open, gentle sloping valley with flood plain
  • Flat and wide flood plain
  • Wide and open valley
  • Very wide and very deep channel
-Features
  • Ox-Bow lakes
  • Flood plains
  • LevĂ©es
  • Lateral erosion

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