Rain is a major component of the water cycle that provides fresh water for human and plant life. While rain is a rich resource, heavy rain can also cause major losses. Too much rain can lead to flooding, mudslides, destruction of vegetation, and reduced water quality from pollution. The 2013 monsoon season in Uttarakhand, India saw especially heavy rains that caused widespread flooding, damaged infrastructure, and loss of life due to landslides. Proper precautions like dam and river constructions can help mitigate the damaging effects of excessive rainfall.

1. Rich Rain
Rich Resource
&
Heavy Rain
Heavy Loss By Group 7

2. What is Rain?
• Rain is liquid water in the form
of droplets that
have condensed from atmospheric water
vapour and then precipitated—that is, a
heavy enough to fall down due to gravity.
• Rain is a major component of the water
cycle and is responsible for replenishing
most of the fresh water on the Earth. It
provides suitable conditions for the
different types of ecosystems, it also
provides water for hydroelectric power
plants and crop irrigation.

3. Rain: a Rich Resource
Rain is liquid precipitation that is directly
involved in Earth's dynamic weather
fronts and climate classifications. It is
responsible for replenishing the vast
majority of fresh water on the planet, and
adds up to an average global volume of
39 inches a year. Rainfall has been
largely integrated into human civilization
and is relied upon for the various key
advantages it possesses over other
means of freshwater acquisition.

4. 1. Human Life
• Fresh water to sustain their lives.
• The human digestive system needs water.
• Expelling toxic substances from human body.
• Water cushions the human joints.
• Water reduces the human body temperature,
helps blood to flow and transport oxygen and
nutrients.
• The lymph system composed of water, help to
fight diseases.

6. 2. Plants
• To survive and reproduce.
• Assuring growth from seedlings to
mature stages of development.
• Plants provide much needed oxygen.
• Plants hold the topsoil together.

8. 3. Natural Water Storage
• Rain water fills Aquifer which provides
drinking and bathing water.
• Water in the aquifers travel though the
sedimentary rock to other locations, thus
providing plants and trees with a constant
source of water.
• Huge amounts of rainfall over the Arctic
regions drop snow, locking up trillions of
gallons of fresh water in the snow sheets
and glaciers.
• Rain is the main source for rivers and
lakes.

11. 4. Inundation and Flooding
• Positive effects on farmlands and
delta areas.
• The flood waters transported huge
quantities of silt over the banks of the
rivers.

12. 5. Electricity Generation
• Hydroelectric plants-They harness the
power present in the fast-moving river
water.
• Rainfall is a necessary factor in keeping
enough water volume moving through the
penstock pipes and turbines.
• Frequent and adequate rain keeps all of our
hydroelectric plants constantly operating.

15. Heavy Rain: A Major
Loss
More often than not, rain can
become a curse also. The
inconvenience it causes is well
known and obvious, as in the case
of weather-sensitive events. Then
there's the mild depression factor,
as cloudy and wet weather can
dampen spirits.

16. 1. Vegetation
• Heavy storm results in mass
destruction of vegetation.
• Uprooting of trees & plants.
• Decaying of plants.
• Affects food availability for humans.
• Destruction of animal habitat.

18. 2. Water Quality
• A polluted environment leads to acid
rain.
• Causes skin disease to humans.
• Vegetation is destroyed.
• Water bodies get polluted.
• Sand becomes polluted.

21. 3. Mudslides
• Excessive rain following a dry period
causes Mudslides.
• Mudslides erode valuable soil.
• They destroy habitation and thus
can be life-threatening.
• Destruction of roads and other
infrastructure.
• Small trees and plants get
destroyed.

24. 4. Flooding
• Flooding destroys homes,
businesses etc..
• Flooding may lead to animal &
human death.
• Flash floods are even more
dangerous.
• Leads to polluted water bodies.
• The National Economy is destroyed.

26. Uttarakhand Disaster
With the onset of the 2013 Monsoon, Uttarakhand and
Parts of Himachal Pradesh in the North Western sections
of India, received heavy rainfall and cloudburst
• Uttarakhand was hit by torrential rains and cloudburst.
Accompanied floods and landslides.
• Caused large devastation in the state.
• Many towns and villages have undergone horrendous
damage.
• Roads ,bridges and several other infrastructures were
swept away.
• Lead to the death of many people.

30. Precautions
• Construction of dam.
• Construction of self closing self barrier.
• River & costal defences.
• Proper climate study.
• Systematic construction of buildings.