This document discusses different types of natural and man-made disasters including floods, droughts, and earthquakes. It provides details on disaster management cycles and the roles of civil engineers. Specific examples of recent floods in India are presented along with causes, effects, and prevention methods. Disaster types include natural events such as floods caused by heavy rainfall or glacier melting filling rivers beyond capacity, and drought from low rainfall impacting crops, as well as man-made incidents like pollution, terrorism, and economic failures. Civil engineers can help mitigate impacts through structural analysis, studying ground conditions, and building disaster resistant infrastructure.

1. DISASTER MANAGEMENT
(Flood,earthquake,drought)
BY
SATHYAN S ,
II-CIVIL,
KIOT.

2. DISASTER/CALAMITIES
• It is defined as a sudden accident or a natural catastrophe that causes
a great damage to environment or life.
TYPES:-
1. Natural disaster.
2. Man-made disaster.

3. Natural disaster
 Floods
 Drought
 Earth quake
 Landslides
 Cyclone
 Tsunami
Manmade disaster
 Accidents
 Pollution
 Economic collapse
 Terrorist attack

4. Normal phase Emergency/
disaster phase
DISASTER CYCLE
Mitigation Rescue phase
Reconstruction Rehabilitation

5. FLOODS
• Whenever the magnitude of water flow exceeds the carrying capacity
of the channel within its banks , the excess of water over flows on the
surroundings causes floods.
TYPES:-
Coastal(surge flood).
Fluvial(river flood)
Pluvial(surface flood)

6. CAUSES:-
Heavy rainfall during cyclones.
Sudden melting of glacier.
Unchecked civil development of a region.
Sudden release of impound water.
Less carrying capacity of a channel/river

7. EFFECTS:-
It cause damage to the people’s property.
It affects the cultivation.
Health problems due to contamination.
It leads to a great economic loss.

8. PREVENTION MEASURES:-
• Encroachment of flood ways should be banned .
• Diverting the excess water to lakes,rivers,etc.
• Introducing check dams in small streams.
• River networking.
• Restore wetland.
• Satellite picture can be used for management.
• Flood forecast and flood warning by CWC.
• Afforestation .

9. Flood in 7-Sisters of India
• CAUSE – Over flowing of the river Brahmaputra.
• LOCATION- ASSAM,MANIPUR,ARUNACHAL
PRADESH,TIRIPURA,MIZORAM,MEGHALYA AND NAGALAND.
• DATE - 14/JULY/2017.
• EFFECTS- 85-DEADS.
4,00,000- were affected.
50,000-homeless.
60-animals.
Kaziranga national park.

10. DROUGHT:-
• It is defined as a prolonged period of abnormally low rainfall,leading
to a shortage of water.
CAUSES:-
Dry season
EL Nino
Erosion due to human activities
Climatic changes

11. TYPES:-
METEOROLOGICAL
AGRICULTURAL
HYDROLOGICAL
EFFECTS:-
CROPS YIELD
DUST POLLUTION
FAMINE
Increase of crime

12. EARTH QUAKE:-

13. Role of civil engineers in disaster
management.
• Structural analysis should be done using the latest techniques.
• Study of ground behaviour is must.
• Construct a proper earth quake resistant buildings.
• Construction of proper drainage system.
• Flooding resistant
• Study about disaster and management.