Processes of a river

Processes of a river

Processes of a river

  • The input to rivers in precipitation (rain, snow etc)
  • The processes of a river are: Erosion >>> Transport >>> Deposition
  • The outputs from rivers are physical features

How do rivers shape the landscape?

Below are ways that rivers change the landscape and a short description of each:

  • Hydraulic action: Force of water on river bank undercuts and removes material.
  • Corrasion: Rocks bounce against side and bottom of river and break off more material.
  • Attrition: Rocks collide with each other and break up into smaller pieces.
  • Solution: Dissolved material being carried along by the river.
  • Suspension: Small particles carried along by the river.
  • Traction: Particles carried along the river bed.
  • Saltation: Bedload particles bounced along the river bed.
  • Deposition: River slows and dumps material including silt.
Water

Agricultural pollution

Agricultural pollution

Water

Deltas

Deltas

Water

Disease: Cholera

Disease: Cholera

Water

Hydrographs

Hydrographs

Water

Levees and flood plains

Levees and flood plains

Water

Managing water supplies

Managing water supplies