Floods: How do floods affect people living in cities?

Types of Floods

Coastal Floods

River Floods

Flash Floods

Recap

Causes of Floods

Snowmelt Rainfall Storm

surge

Failure of man-made

structure

Instructions 1. Find out the cause of the flash flood in

Singapore. 2. Describe what you see from the picture?3. What impacts can you infer from the picture?

Video: Flash flood hit several areas in Singapore Again – 23 Dec 2011.

1. According to the video, what was the cause of the flash flood in Singapore?

Answer: Prolonged heavy rain

Video: Flash flood hit several areas in Singapore Again – 23 Dec 2011.

Display 2 pictures taken from the video

Instructions 1. Describe what you see from the picture?2. What impacts can you infer from the picture?

Video: Flash flood hit several areas in Singapore Again – 23 Dec 2011.

2. Describe what you see from the picture?

3. What impacts can you infer from the picture?

Sales assistants are seen cleaning and mopping the floor due to the flood

• They are unable to run their business as they have to clean up the wet areas/floor due to the floodwater. (economic impact)

• Their goods might be affected/ wet hence unable to sell. Incur a loss. (economic impact)

2. Describe what you see from the picture?

3. What impacts can you infer from the picture?

Sales assistants are seen cleaning and mopping the floor due to the flood

• If shopping is your way of distress and you are unable to purchase. It might affect your social well-being. (social impact)

• Favourite clothes that you would like to purchase is wet/not for sale, you will be disappointed/ sad. (social impact)

2. Describe what you see from the picture?

3. What impacts can you infer from the picture?

A supermarket is flooded with water.

Shop owners: Goods will be wet, damaged or contaminated. They will incur a loss as they are unable to sell the goods. They will have to dispose it. (Economic impact)

2. Describe what you see from the picture?

3. What impacts can you infer from the picture?

A supermarket is flooded with water.

Consumers are unable to shop for groceries. (For instance, this particular shop sells certain items that you need but when you are unable to get it, you will feel disappointed.) (social impact)

2. Describe what you see from the picture?

3. What impacts can you infer from the picture?

A supermarket is flooded with water.

• Some customers might be trapped inside or have difficulties getting out due to the floodwater. They might be traumatised.

• Fear of water. (social

impact)

Observe that there are social and economic impacts of flash flood.

Video: Flash flood hit several areas in Singapore Again – 23 Dec 2011.

It is important so that measures such as flood preparedness, prevention and

mitigation can be done to reduce the impacts.

Why is it important to understand the impacts of

flooding?

Describe the social impact of floods with the use of pictures and texts/quotes.

Learning Objectives

17

‘Social impacts refer to the effect of an event on the well-

being of people.’

Social Impacts

Injuries, spread of diseases and loss of

livesHomelessness Disruption to clean

water supply

During floods, Floodwater may cause buildings to collapse and injure or kill people.

Injuries, spread of diseases and loss of lives

Floods can affect physical and emotional healthHypothermia (from being caught in the flood for too long)

Injuries, spread of diseases and loss of lives

Floods can affect physical and emotional healthAfter the flood, diseases might breed through:

1. The contamination of the water due to chemical spill : causing cholera and dysentery to spread.

Injuries, spread of diseases and loss of lives

Floods can affect physical and emotional healthAfter the flood, diseases might breed through:

2. Stagnant pools of water encourage mosquitoes to breed: causing more cases of malaria and dengue fever.

Injuries, spread of diseases and loss of lives

Floods can affect physical and emotional healthPeople will suffer from emotional distress and stress due to the loss of loved ones and their homes respectively.

Injuries, spread of diseases and loss of lives

HomelessnessFloodwaters can damage and sweep houses away.

As they lost their houses, they will have to stay in emergency shelters while the rebuilding of their houses.

Floods: How Can Cities Prepare For Floods?24

HomelessnessFlooding in cities tends to affect many people due to the high population densities

Floods: How Can Cities Prepare For Floods?25

Homelessness Example: Impact of Hurricane Katrina on New Orleans–Severe damage to property–Nearly 1.5 million people in New Orleans displaced or left homeless –Emergency shelters and trailer parks had to be set up for the flood victims

Floods: How Can Cities Prepare For Floods?26 A trailer park consisting of travel trailers for the victims of Hurricane Katrina in 2005

Disruption to clean water supplySupply of clean water can be disrupted in two ways:

1)Damage to water pipes

2)Sewage pipes burst causing contamination of water.

Floods: How Can Cities Prepare For Floods?27

Flood-affected residents queue for drinking water in Karachi, Pakistan, in September 2010

Disruption to clean water supply Example: Floods in

Pakistan in 2010 –Affected more than 20 million people–Disrupted water supply in many areas

Floods: How Can Cities Prepare For Floods?28

Flood-affected residents queue for drinking water in Karachi, Pakistan, in September 2010

Layers of meaning Step 1: Describe what you see from the picture and write your answers in the first box.

Step 2: Using your answers from the first box, further infer what might happen before the picture was taken.

Some guiding questions to help you for step 2: What happened before this? Why they are queuing up? What are the consequences/impacts?

Source – Picture

Layers of meaning (Example)(Pg.3)People affected by Hurricane Katrina sought shelter in temporary shelters such as the Astrodome stadium in Houston, Texas, United States of America. (Textbook Page 174)

Q1: What does the photograph definitely tell me? (Describe the photograph) A lot people are staying in

the temporary shelter The people in the

temporary shelter have a place to sleep and rest.

They are provided with boxes of food and water.

Layers of meaning (Example)(Pg.3)

Q2: What can I infer from the photograph? State what is the social impact. There are many people

staying in the temporary shelter because they are homeless. They lost their houses due to the flood caused by Hurricane Katrina. (Homelessness)

Q1: What does the photograph definitely tell me? (Describe the photograph) A lot people are staying in

the temporary shelter The people in the

temporary shelter have a place to sleep and rest.

Layers of meaning (Example)(Pg.3)

Q2: What can I infer from the photograph? State what is the social impact. They are provided with

food and water because the flood and hurricane might have cause difficulties in access to clean water supply and food. (Disruption to clean water supply)

Q1: What does the photograph definitely tell me? (Describe the photograph) They are provided with

boxes of food and water.

Layers of meaning (Example)(Pg.3)

Task 1. Given one source/ picture per group. 2. Answer the questions provided.

Activity- Group Work

Layers of meaning Step 1: Describe what you see from the picture and write your answers in the first box.

Step 2: Using your answers from the first box, further infer what might happen before the picture was taken.

Some guiding questions to help you for step 2: What happened before this? Why they are queuing up? What are the consequences/impacts?

Source – Picture

Step 1: Read the text Step 2: State the social impacts in source A/B/C. Step 3: Describe the impact by supporting it with evidence from source A/B/C. (You can underline the evidence in your text) E.g. Social impact: loss of lives Describe: 200 lives are being lost due to the flood.

Source – Text/ Article

Grouping: 1. 8 Groups in total – 1 group consists of 5 people. 2. Number 1-5 among your group members 3. When you are ready in our groups, one

representative will raise their hands and will come forward to collect the materials.

Activity- Group Work

Ground Rules 1. Stay in your group. You are not allowed to

move/walk to another group unless you are given permission.

2. All members are to contribute to the discussion at all times.

3. When you are done, keep your volume to the minimum. You are encouraged to attempt the other sources if you are done so that you can follow through when other groups are presenting.

Group work

1. Collect/Provide the resource (1 piece of A4 paper/Foolscap)

2. In charge of writing 3. In charge of presenting 4. Lead the discussion (Leader) 5. Time keeper All members are to contribute to the discussion at all times.

Student’s Role

GROUP

Source/ Picture

GROUP Source/ Picture

A Source A E Picture 2 B Source B F Source A

C Source C G Source B D Picture 1 H Source C

Leaders, please take note of the source/picture your group are discussing.

http://www.online-stopwatch.com/countdown-clock/full-screen/ Timer – 8 Minutes

Presentation

Describe the social impact of floods with the use of pictures and texts/quotes.

Recap

Social Impacts

Injuries, spread of

diseases and loss of lives

HomelessnessDisruption to clean water

supply