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Flashcards in Case Studies + facts Deck (54):
1

Watery World - Reservoirs

How many farm houses were brought up and drowned

16

2

Watery World - Reservoirs

Case Study?

Chew Valley Lake, Bristol

3

Watery World - Reservoirs

How much land brought up and drowned?

2000 acres

4

Watery World - Reservoirs

Why is Bristol under pressure?

Rapid growth from urbanisation - greater water needs

5

Watery World - Rivers

Case Study?

Mojave desert, Las Vegas

6

Watery World - Rivers

How much water do they get from Colorado?

90%

7

Watery World - Rivers

How much have groundwater levels declined? Relevance?

More than 90m

Puts a strain on the river to supply everything

8

Watery World - Groundwater

Case Study?

Mexico City

9

Watery World - Groundwater

How many people does it supply to?

15.6 million

10

Watery World - HIC water supply issues

The 4 issues

Water quality
Spatial variability
Seasonal imbalance
Loss through broken pipes

11

Watery World - HIC water supply issues

Water quality

Standard of water cleanliness falls below expected

12

Watery World - HIC water supply issues

Spatial Variability

Variations in supply and demand across a country

13

Watery World - LIC water supply issues

Lack of clean piped water

1 billion people lack access

14

Watery World - LIC water supply issues

Piped water in Mozambique. How many have a water tap?

36%

15

Watery World - LIC water supply issues

Chronic diarrhoea - how many suffer yearly

900 million

16

Watery World - LIC water supply issues

How is chronic diarrhoea contracted

Drinking dirty water

17

Watery World - LIC water supply issues

How is bilharzia contracted

Parasite disease. Caught in the water when washing, where the snail lives

18

Watery World - LIC water supply issues

Cholera - how is it contracted

Faeces getting into drinking water

19

Watery World - LIC water supply issues

Cholera - how many people died, where

3000 people in Zimbabwe

20

Watery World - Water transfer dispute

Why is it under pressure

- high demand in cities in dry regions
- native indians claim rights
- pop in low basin risen by 40%
- hoover dam

21

Watery World - Water transfer dispute

Central Arizona Project

Amount of dams lagged water for lower basin

Built a bypass from near the source to near the mouth

22

Watery World - Water transfer dispute

Canal

Lined canal with plastic to stop soaking into ground

23

Watery World - HIC Water Management Scheme

What are the effects on drinking water

Saves 850 mill litres of drinking water by reducing drinking water consumption

24

Watery World - HIC Water Management Scheme


recycled water price

15 cents per litre lower than price of drinking water

25

Watery World - HIC Water Management Scheme

phosphate

phosphate levels in recycled water is high = algae growth

26

Watery World - HIC Water Management Scheme

corrosion

corrosion rates of popper pipes can be increased

27

Watery World - LIC Water Management Scheme

Boreholes

Holes to pump water from. In Mozambique

28

Watery World - LIC Water Management Scheme

spring protection

prevents contamination. includes fencing surrounding areas. drainage area. concrete wall and outlet pipe to keep clean whilst buckets re filled

29

Rivers - FORCE

Fast flow
Outside of bend
River
Cliff
Erosion

30

Rivers - Coastal Flooding LIC

Causes

Mozambique

2 tropical storms at same time. Made rivers overflow

31

Rivers - Coastal Flooding LIC

Effects on people

- half a mill left homeless
- 700 died
- thousands stranded in trees and on buildings

32

Rivers - Coastal Flooding LIC

Effects on environment

- villages pollute with raw sewage
- habitats and animals killed
- fresh water contaminated by dirt

33

Rivers - Coastal Flooding HIC

Causes

- 60mm of rainfall in 2 hours
- ground was already saturated
- steep drainage basin, impermeable slate
- confluence of three rivers

34

Rivers - Coastal Flooding HIC

effects on people

- 2 million pound rescue op
- 50 mill pound damage
- 100 cars washed away
- 58 flooded properties
- 14 million pound insurance

35

Rivers - Coastal Flooding HIC

effects on environment

- coastal pollution due to debris, cars
- 300m of sewer pipes blocked, contaminating flood water
- trees and habitats destroyed

36

Rivers - Forecasting

River Stour

Enviro Agency created maps identifying danger of flooding and whats been done to minimize risks. Weather warnings given out

37

Rivers - Building design

UK

UK
- ceramic tiles and rugs
- raise electrical sockets to 1.5m above sea level

38

Rivers - Building design

Bangladesh

Bangladesh
- 80% of land is 10m above sea level
- replace wooden windows with synthetic ones
- houses on stilts

39

Rivers - Planning

Nome, Alaska
- Land use zoning

40

Rivers - Education

National Weather Service USA
- store drinking water in bathtubs
- first aid supplies
- disaster supply kit
- food stock that requires little cooking and no refrigerating

41

Rivers - Management of river/ effect of river flooding

human impacts

River Stour, Blandford
- impermeable clay
- few trees to intercept
- very narrow flood plain

42

Rivers - Management of river/ effect of river flooding

management

- 2.5m high flood wall
- flood bank protects brewery
- washland
- pumping station

43

Rivers - Management of river/ effect of river flooding

figures

cost 1,450,000
saved 1,600,000

44

Tectonics - Living in an earthquake zone

effects

- 42 killed
- fires released toxic gases
- bay bridge collapsed
- gas and electric pipes dirupted = fires

45

Tectonics - PPP HIC earthquake

san fransisco

earthquake drills - california shakout. 6.9 million took part
- earthquake survival kit
- earthquake simulators

46

Tectonics - causes and effects of volcanic eruption

social

montseratt
- 5000 had to move
- 1 hospital left
- health problems

47

Tectonics - causes and effects of volcanic eruption

economic

montseratt
- customers declined by 1/3 due to evacuations
- businesses destroyed

48

Tectonics - causes and effects of volcanic eruption

environmental

montseratt
- coral reef covered in ash killed coral
- soil more fertile
- large amounts of habitats destroyed due to pyroclastic flow

49

Tectonics - ppp hic eruption

preparing

mt st helens
- evacuated 2000
- 50mph speed limit set up
- 1 billion in relief funds
- volcanologists sent to monitor

50

Tectonics - ppp lic eruption

preparing

mt nyiragongo
- 120 thousand left homeless
- no emergency provision
- 100 died

51

Coasts - preventing coastal flooding HIC

london uk
- flood walls along thames
- advice
- thames barrier
- leaving open spaces to be flood plains

52

Coasts - preventing coastal flooding LIC

bangladesh
- mangrove swamps planted
- embankments maintained
- efficient early warning systems
- large concrete shelters

53

Coasts - management of coastal area

swanage

- 1.5km of coastal defence
- rock armour at base of cliffs
- 40,000m3 0f sand
- cliff face being undercut

54

Tectonics - lic earthquake

kashmir
- landslides
- trees collapsed
- sewage released
- 2.3 billion dollars to repair
- 79000 killed
- 2.5 million homeless
- sewage pipes broken = diseases