By: Group 5

Subject: Disaster Management

Roll no: 84, 86,11, 18, 74, 07, 75, 64, 66

ThroughouT This presenTaTion you will learn

INTRODUCTION TO

DROUGHT

TYPES OF TYPES OF DROUGHTDROUGHT

CAUSES OF DROUGHT

HISTORY OF DROUGHT

EFFECTS OF EFFECTS OF DROUGHTDROUGHT

MITIGATION MITIGATION OF DROUGHTOF DROUGHT

Look at the pictures and tell what you observe?

A lack or of for an unusually

period of , involving less than the usual

over 3 months

A lack or shortage of water for an unusually long period of time, involving 50% less than the usual rainfall over 3 months

DroughT is

The land is barren and covered in thin dust. Cracks

appears in the earth’s.

This is drought

DROUGHT

What do you mean by drought?

The word drought instantly brings image of dry, parched land, no

rainfall, crop failures, starvation and bad living conditions to our mind.

In simple terms, drought is a condition of acute scarcity of water, food,

fodder, and employment due to scanty rainfall in an area.

ARe we All vUlneRAble TO DROUGHT?

It is one of the most widespread disaster that India faces, affecting more than

70% of cultivable land.

Often, people do not react to drought like they do to other sudden disasters

such as earthquakes, cyclones, and floods.

Since drought conditions develop over period of time, and without immediately

perceptible changes to environment.

Hence drought is called a ‘ slow on set’ disaster.

HOw A DROUGHT sTARTs

A drought starts when total rainfall is well below average for several

months

Other signs of drought include:

Very dry soil

Trees have a sign of dying

Weather getting hotter and hotterVery dry soil

CA

Use

s O

F D

RO

UG

HT

Deficiency Of Rain WaterDeficiency Of Rain Water

Soil ErosionSoil Erosion

Global WarmingGlobal Warming

DeforestationDeforestation

HeRe’s THe eARTH

Ozone Layer

Hole

This has increased the average

temperature and caused climate changes

to the earths atmosphere and also causes

drought.

Types of droughT

There are 3 types of drought. They are as follows:

MeTeorological droughT

Meteorological drought is generally defined by comparing the

rainfall in a particular place and at a particular time.

This happens when the actual rainfall in an area is significantly

less than the climatological mean of that area.

Meteorological drought leads to soil moisture and this always has

an effect on crops production.

hydrological droughT

Hydrological Drought is associated with the affect of low rainfalls on

water level in reservoirs, rivers & lakes .

This type of drought are noticed sometimes after a meteorology

drought.

A hydrological drought change in water level affects eco-system.

agriculTural droughT

Agricultural drought occurs when there isn’t enough water for a crop

to grow at the particular time.

This type of drought doesn’t depend only in the amount of rainfalls

where water is used carelessly for irrigation and other purpose.

hisTory of droughT

PERIOD DROUGHT YEARS NUMBER OF DROUGHT

1801-1830 1801, 1804, 1806, 1812, 1819, 1825

6

1831-1860 1832, 1833, 1837, 1853, 1860 51861-1890 1862, 1866, 1868, 1873, 1877,

18836

1891-1920 1891, 1897, 1899, 1901, 1904, 1905, 1907, 1911, 1918, 1920

10

1921-1950 1939, 1941 21951-1980 1951, 1965, 1966, 1971, 1972,

1974, 19797

1981-2010 1982, 1987, 2002, 2009 4

Some of the areaS prone to drought

Drought-in-Maharashtra: Marathwada region

AurangabadNandedLaturJalnaBeedParbhaniOsmanabadHingoli

Drought-in-Karnataka: Chitradurga-Bijapur

Bikaner-Jaisalmer

Gujarat- SaurashtraDead-Land-of-Rann of Kutch

Drought-in-Andhra-Pradesh: Mahbubnagar-Khammam District

Drought-in-Odissa: Mayurbhanj-Balasore