Factors Affecting Flooding

• Geography
• Upper Secondary (Key Stage 4)
• Lower Secondary (Key Stage 3)

Factors Affecting Flooding

Urbanisation is an exmaple of a...

1. Human cause of flooding
2. Physical casue of flooding

Urbanisation contributes to flooding because...

1. It prevents interception by trees.
2. It prevents interception increasing surface run off.
3. It increases interception by trees.
4. It increases through flow.

The shape of a drainage basin can effect flooding because...

1. If the basin is a triangle there will be more flooding
2. It doesnt affect flooding.
3. A shallow river menas a lower velocity.
4. If there are not many tributaries all the water flows directly into the main channel.

The shape of the drainage basin is a

1. Human Factor
2. Physical Factor

Deforerstation contributes to flooding because...

1. It prevents interception by trees.
2. It prevents interception increasing surface run off.
3. It increases interception by trees.
4. It increases through flow.

Agriculture contributes to flooding because.....

1. Tractors and live stock compact soil which increase surface run off.
2. Crops increase surface run off.
3. There is heavy rainfall.

Deforestation is a....

1. Human Cause of flooding
2. Physical cause of flooding

Agriculture is a....

1. Human Cause of flooding
2. Physical cause of flooding

Geology is a....

1. Human Cause of flooding
2. Physical cause of flooding

Geology/Rock Type can contribute to floodinig because....

1. Permeable rocks allow water to percolate through the ground
2. Some rocks are hard.
3. Impermeable rocks dont allow water to percolate.
4. Some rocks are soft.