Drainage basin

Source

Mouth

River channel

Tributaries

Confluence

Why rivers erode

Hydraulic action

Corrasion

Corrosion (solution)

Attrition

Physical weathering

Chemical weathering

Biological weathering

Mass movement

Soil creep

Slumping

V shaped valleys

Interlocking spurs

Waterfalls

Middle Course

Meanders

Lower course

Ox bow lakes

Floodplains

Levees

Human causes of flooding:
Ploughing

Human causes of flooding:
Vegetation removed

Human causes of flooding:
Dams

Human causes of flooding:
Drainage

Physical causes of river flooding:
Impermeable rock

Physical causes of river flooding:
Sudden rise in temperature

Physical causes of river flooding:
Hot dry weather

Physical causes of river flooding:
Steep valley slopes

Physical causes of river flooding:
Long periods of heavy rainfall

Physical causes of river flooding:
Cloudburst

Effects of Flooding:
USA 2006

Effects of flooding:
Mexico 2007

Effects of flooding:
India 2008

Forecasting and Education

Planning and building designs

Hard engineering

Soft Engineering

Hard engineering techniques:
Embankments

Hard engineering techniques:
Channelissation

Hard engineering techniques:
Flood relief channels

Hard engineering techniques:
Dams

Hard engineering techniques:
Flood walls

Hard engineering techniques:
Storage areas

Soft engineering techniques:
Floodplain zoning

Soft Engineering techniques:
Washlands

Soft Engineering Techniques:
Warning systems

Soft engineering techniques:
Afforestation

Bolivia 2007

Serbia, Romania and Bulgaria 2006

Nepal 2008

Sudan 2007

somalia and Kenya 2007

River Nene, Northampton

River Nene, Northampton:
Effects

River Nene, Northampton:
Embankments

River Nene, Northampton:
Floodwalls

River Nene, Northampton:
Afforestation

River Nene, Northampton:
Warning Systems

River Nene, Northampton:
Washlands