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Flashcards in Mekong in Depth Deck (57):
1

Where is the Mekong?

South East Asia

2

Which counties does the Mekong flow through?

China, Myanmar, Thailand, Laos, Cambodia and Vietnam

3

Where has most of the development in the Mekong taken place?

The upstream section e.g China

4

Compared to other large rivers, how clean and natural is the Mekong?

Pristine, little pollution so far

5

What is the length of the Mekong?

4880km

6

What is the mean annual discharge of the Mekong?

14,800m cubed per second

7

What is the first 4000km of the river made up of?

Bed rock or thin alluvium above bed rock

8

Where is the large delta at the end of the Mekong?

Vietnam

9

What is the average seasonal change in river depth?

10m, can be as high as 20m in lower regions

10

What are deep river stages important for?

Fish migration and habitation

11

What features occupy the Mekong midway down its length?

Rock islands which can change and divert flow

12

Why does the river says ten constantly change?

There is large variations in water output from monsoons and Himalaya summer ice melts

13

What forms the 4000 Island stage of the Mekong?

Sediment load and bedrock formation

14

When is the peak of river volume?

June

15

Where is most of the Mekong discharge?

Far down the river, the catchment is much larger with more tributaries

16

What is the Tonle Sap?

A large seasonal lake which alters Mekong flow

17

Why is Tonle Sap different?

Has reversed flow in different parts of he year

18

What does flooding in the Tonle Sap create?

Diverse biological floodplain

19

When does the Tonle Sap flood?

May-October (wet season)

20

Where does most of the Mekong sediment end up?

Around the Tonle Sap catchment

21

What is the main Benidorm from the Mekong?

Large fish sticks due to nutrient heavy system

22

Where does most of the protein come from to the Cambodian diet?

Fish

23

How does the Mekong rate for fish stocks?

Most productive fishery in the world

24

What has the large food availability led to?

Huge human population boom

25

What has happened to amount of fish caught per fisherman?

Reduced due to more increased amount of fishermen, from 350-200kg

26

What is the weight of fish caught in the Mekong?

225000tons, gone up from 125000

27

What society was set up in 1957 to manage the Mekong river?

The Mekong Comittee

28

What replaced the Mekong Committee In 1995?

The Mekong River Commission

29

What was the aim of the Mekong River Commission?

"An economically prosperous, socially just and environmentally sound Mekong river basin"

30

What is China's main use of the Mekong?

Power, Trade to the Coast

31

What is Thailands main use of the Mekong?

Water, Power from Laos tributaries

32

What is Cambodias main use of the Mekong?

Water, Fish

33

What is Vietnams main use of the Mekong?

Water, Productive and fertile delta region

34

What is Laos main use of the Mekong?

Power

35

Why are Cambodian officials worries about current plans for the Mekong?

More dams planned which would damage and effect the Cambodian fish stocks

36

Which region is the centre for Mekong dam building?

The Lancang Cascade

37

How much water does the Lancang Cascade store?

40 cubic Km of water

38

What was the first dam build in the Cascade?

Manwan dam

39

How many dams have been suggested on the Mekong?

14

40

Which proposed dam is causing the most controversy?

The Xayaburi in Laos

41

Who has funded the Xayaburi dam?

Thailand, The dams electricity will be sold in part to Thailand

42

When is the Xayaburi dam due for completion?

2019-2020

43

What is the resentment over the Xayaburi dam?

Will start the building of the other 13 proposed dams

44

Why does Laos want to build the dam?

Very poor economy, dam will provide added income

45

What will increasing dam building impact?

The size of the fertile floodplain in the lower Mekong basin

46

What will 1m water level in the Mekong do to the size of the flooded area?

Reduced by 1000km

47

What is the average value of a river world wide?

$3300 per ha/year

48

How many dams is china aiming to build on the Mekong?

8

49

Why is the river Important to those in the Laos area due to income?

They have a high poverty prevalence of 19%

50

What percentage of Laos does not have access to clean water?

21%

51

What will income be from hydropower generation?

3.7billion

52

What would dam building cost to the local economy in terms of fish stocks and conservation costs?

500million/year

53

What % of the Mekong would damming turn into reservoirs?

55% at the lower stages

54

Out of the 11 proposed dams, how many contain fish ladders?

Just 3

55

What percentage of river sediment would be trapped behind dams?

Up to 75%

56

How would damming the Mekong effect the locals diet?

Reduce protein intake by 30%

57

What does the SEA recommend for building of dams on the Mekong?

A 10year no building period after the first dam is built