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1

Flood management is important because many people live in flood-prone areas  ........................................................... and a lot of investments in towns, plants and infrastructure have been made in such areas

the coast or on floodplains 

2

Flood management can aim at

  1. a reduced risk of floods;
  2. a reduced vulnerability to floods;
  3. improved preparedness;
  4. streamlined emergency management once a flood damage has occurred; and
  5. improved knowledge (about cause-effect relationships, driving forces and management options);

3

The management can comprise activities such as

  • forecasting services;
  • education and awareness campaigns;
  • flood proofing;
  • land management ('keeping people away from floods');
  • water management (storage operation);
  • structural protection (dykes) ('keeping floods away from people'); Need to protect population, agriculture, infrastructure, and environment Growing economic activity in flood-prone areas Flood management Interventions: Land use, infrastructure
  • timely and appropriate response to events (such as disasters) and developments;
  • studies of cause-effect relationships and of impacts of intervention; etc

4

It is the poor people and the children who are most vulnerable to

floods

5

It is the poor people and the children who are most vulnerable to floods. Therefore, a ........................... must be extended to these parts of the population.

particular attention

6

Good flood management would take its starting point in a suitable knowledge about

  1. the flood risk (so that high-risk areas are delineated); and
  2. the flood vulnerability (so that the most important potential consequences are identified).

7

Good flood management would take its starting point in a suitable knowledge about

  1. the flood risk (so that high-risk areas are delineated); and
  2. the flood vulnerability (so that the most important potential consequences are identified).

If this knowledge is not adequate ................. should be made

studies

8

Coastal floods can be caused by

storm surge

9

Coastal floods can be caused by storm surge, which is generated by

a combination of wind friction and low air pressure

10

Coastal floods can be caused by storm surge, which is generated by a combination of wind friction and low air pressure. ................................... will add to the water level

Local wind waves

11

Local wind waves will add to the water level, and the storm surge can be ...................................

amplified (or reduced)

12

. Local wind waves will add to the water level, and the storm surge can be amplified (or reduced) by

interference with the strictly regular astronomical tide.

13

Extreme floods can be related to

extreme storms - like cyclones -

14

Extreme floods can be related to extreme storms - like cyclones - that attack

attack the open coast

15

Extreme floods can be related to extreme storms - like cyclones - that attack the open coast. In areas that are otherwise more sheltered (like the........................ )

Baltic Sea

16

Extreme floods can be related to extreme storms - like cyclones - that attack the open coast. In areas that are otherwise more sheltered (like the Baltic Sea), extreme floods can be generated by

by unusual sequences of wind set-up and air pressure variations.

17

Irrespective of the weather, flood waves can be generated by

distant, sub-sea earthquakes (such flood waves are called tsunamis), or, in arctic areas, by breaking glaciers.

18

Irrespective of the weather, flood waves can be generated by distant, sub-sea earthquakes (such flood waves are called tsunamis), or, in arctic areas, by breaking glaciers.

The effect depends on the

coastal profile

19

The effect depends on the coastal profile. A gently sloping profile causes

a high amplification of an approaching flood wave (and tidal wave) and a high set-up in response to local wind

20

A steep profile will tend to

reflect the flood wave (and tidal wave), rather than amplifying it

21

A steep profile will tend to reflect the flood wave (and tidal wave), rather than amplifying it, and the locally generated set-up will be small if

the water depth is large

22

Often, a shallow coastal profile occurs in places with

low-lying lands

23

. Often, a shallow coastal profile occurs in places with low-lying lands. If so, the flood risk will be

high

24

It is the weakest part of the poor population - rural women, elderly, and children - who are

most at risk

25

It is the weakest part of the poor population - rural women, elderly, and children - who are most at risk. Even those who escape unharmed in the first place may be victims to

to diseases in the days to follow

26

. Even those who escape unharmed in the first place may be victims to diseases in the days to follow, and may in any case have

lost whatever they owned.

27

A major problem in this connection is that it is

is not possible to predict the route of a moving extreme depression like a cyclone

28

Cyclone shelters Built to be used only

once in a lifetime

29

Cyclone shelters Built to be used only once in a lifetime, cyclone shelters are

an expensive means of protection against the flood peril

30

Cyclone shelters Built to be used only once in a lifetime, cyclone shelters are an expensive means of protection against the flood peril. On the low islands in the Meghna Estuary, however, they are the only refuge within reach. After the 1991 cyclone, different donor organisations have funded the construction of some ................ cyclone shelter in the ...... area 

1,200 

Banglandesh