§3.3: water, sometimes too much - part 1

• Aardrijkskunde
• Middelbare school
• vwo
• Leerjaar 3

§3.3: water, sometimes too much

Today

• Recap previous lesson
• Introduction
• Explanation §3.3
• Assignments workbook

Explain the difference between renewable water resources and non-renewable water resources

Why is there no sustainable water management in The Netherlands?

Non-renewable water resources: 

water is running out

Renewable water resources:

water doesn't run out

Today

• Recap previous lesson
• Introduction 



• Explanation §3.3
• Assignments workbook

Look at the picture: where do you think this picture is taken?

1. Indonesia
2. India
3. Brazil
4. Egypt

Look at the picture: what do you think that has happened?

How many (and which) other causes of flooding can you think of?

Today

• Recap previous lesson


• Introduction
• Explanation §3.3
• Assignments workbook

Learning goals

• You know the seven reasons why an area can flood.
• You can explain which areas of the world are at high risk of flooding.

River and coastal plains

Deforestation

Soil subsidence

Fossilised 

Peak discharge 

When a lot of water is carried by the rivier

The cutting down of trees or forests 

A flat, low-lying, piece of land next to the ocean or river 

Land that is replaced by buildings and roads

Sinking of the ground 

Vocabulary 

River and coastal plains	River- en kustvlakten	A flat, low-lying, piece of land next to the ocean or river
Deforestation	Ontbossing	The cutting down of trees or forests
Fossilised	Versteend	Land that is replaced by buildings and roads
Soil subsidence	Bodemdaling	Sinking of the ground
Peak discharge	Piekafvoer	When a lot of water is carried by the rivier

By nature:

1. River and coastal plains
2. Areas at the foot of a mountain with a rocky surface
3. Melting snow and heavy rainfall 
4. Tropical hurricanes 

By humans:

1. Deforestation 
2. Urbanisation 
3. Areas where the ground is sinking (soil subsidence)
   

High flood risk

1. River and coastal plains

• 70 % of the world population lives 

along rivers or close to the coast

• Low-lying areas
• High flood risk 

River and coastal plains: Netherlands

Go to: https://overstroomik.nl/

Does your house flood, and if so, by how much?

2. Areas at the foot of a mountain with a rocky surface 

• Heavy rainfall
• Rain can't infiltrate into the ground


• Water flows directly to the river
• Peak discharge 

Peak discharge

• Greater discharge (afvoer) of a river
  

In other words:

• When the river carries a lot of water 
  

3. Melting snow + heavy rainfall

• Example: India
  
• Meltwater from the Himalaya 
• Rain season in April - October 

4. Tropical hurricanes 

By nature:

1. River and coastal plains
2. Areas at the foot of a mountain with a rocky surface
3. Melting snow and heavy rainfall 
4. Tropical hurricanes 

By humans:

1. Deforestation 
2. Urbanisation 
3. Areas where the ground is sinking (soil subsidence)
   

High flood risk

1. Deforestation

Forest:

• Roots of the trees hold the water
  

No forest:

• No more trees that can hold the water and the soil 
• Water flows directly to the river
• Peak discharge 

2. Urbanisation

• More buildings and roads
• Water can't infiltrate into the ground
• Water flows directly to the river
• Peak discharge 

3. Soil subsidence

• Pumping up of groundwater 
• Soil subsidence: the soil will sink

Help! 

I can't

 reach

Learning goals

• You know the seven reasons why an area can flood.
• You can explain which areas of the world are at high risk of flooding.

Today

• Recap previous lesson


• Introduction
• Explanation §3.3
• Assignments workbook

Start homework

• Read §3.3
• Make assignment 1, 5 and 6

Finished?

• Have the assignments checked by the teacher
• Make assignment 2, 3 and 4