Waterfalls
• Sudden, steep and vertical flow of fast-
flowing water falling from great heights
• Formed by river erosion
Niagara Falls on Niagara River,
Canada and USA
• formed by
erosion of
rock of
different
resistance
Formation of Waterfalls
Formation of Waterfalls
• River flows across rocks of different
resistance.
Formation of Waterfalls
• River erodes the less resistant rock more rapidly
• This cause a change in the gradient of the r...
Formation of waterfalls
• Over time, river plunges from a great height to
hit the riverbed below,
• This forms a waterfall.
Formation of plunge pools
• Repeated pounding of the river bed leads to a
depression at the base of a waterfall
• A plunge...
Floodplain
 Areas of low-lying ground adjacent to a
river at the lower course
Formation of Floodplain and Levee
Formation of Floodplain and
Levee
Floodplain and Levee
• During a heavy rainfall, river water
overflows its bank. River loses speed as it
encounters frictio...
Floodplain and Levee
• Deposition occurs as river’s energy decreases.
• Coarser and heavier sediments are deposited
nearer...
Formation of Floodplain and
Levee
Floodplain and Levee
• Overtime, the accumulation of fine
sediments results in the formation of flat
plains
• Coarser and heavier sediments are
acculumated
• Results in the formation of raised banks
• Known as levees.
River 2 waterfall plungepools floodplain n levees
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River 2 waterfall plungepools floodplain n levees

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River 2 waterfall plungepools floodplain n levees

  1. 1. Waterfalls • Sudden, steep and vertical flow of fast- flowing water falling from great heights • Formed by river erosion
  2. 2. Niagara Falls on Niagara River, Canada and USA • formed by erosion of rock of different resistance
  3. 3. Formation of Waterfalls
  4. 4. Formation of Waterfalls • River flows across rocks of different resistance.
  5. 5. Formation of Waterfalls • River erodes the less resistant rock more rapidly • This cause a change in the gradient of the river course.
  6. 6. Formation of waterfalls • Over time, river plunges from a great height to hit the riverbed below, • This forms a waterfall.
  7. 7. Formation of plunge pools • Repeated pounding of the river bed leads to a depression at the base of a waterfall • A plunge pool is formed.
  8. 8. Floodplain  Areas of low-lying ground adjacent to a river at the lower course
  9. 9. Formation of Floodplain and Levee
  10. 10. Formation of Floodplain and Levee
  11. 11. Floodplain and Levee • During a heavy rainfall, river water overflows its bank. River loses speed as it encounters friction.
  12. 12. Floodplain and Levee • Deposition occurs as river’s energy decreases. • Coarser and heavier sediments are deposited nearer to the river bank. • Finer and lighter sediments are deposited further away.
  13. 13. Formation of Floodplain and Levee
  14. 14. Floodplain and Levee • Overtime, the accumulation of fine sediments results in the formation of flat plains
  15. 15. • Coarser and heavier sediments are acculumated • Results in the formation of raised banks • Known as levees.

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