RAINWATER HARVESTING ENVIRONMENTAL EDUCATION #EDUCATION #METHODS OF RAINWATER HARVESTING

1. ERAM GIRLS DEGREE
COLLEGE
 NAME: MAHIMA SRIVASTAVA
 CLASS : B. Ed . [2022 –2024]
 SEM. SECOND
 PAPER : ENVIRONMENTAL
SCIENCE
 TOPIC: RAINWATER HARVESTING

2. Content
RAIN WATER HARVESTING
REASONS FOR RAIN WATER HARVESTING
METHODS OF RAINWATER HARVESTING
BENEFITS OF RAINWATER HARVESTING
LIMITATIONS OF RAINWATER HARVESTING

3. What is Rainwater Harvesting ?
Rain water is the purest form of water.
RWH is the process of accumulation & storage of Rain water for reuse rather
than allowing it to runoff.
DIFFERENT METHODS OF RWH
1. ROOFTOP RAINWATER HARVESTING
2. SURFACE RUNOFF HARVESTING

4. The rooftop
becomes the
catchments and the
rainwater from the
building &
HOUSES are collected
.
ROOFTOP RWH

5. …...Interesting facts
• Roof top rain water harvesting is the most common practice in
Shillong, Meghalaya. It is interesting because Cherrapunji and
Mawsynram situated at a distance of 55 km. from Shillong
receive the highest ;
rainfall in the world, yet the state
capital Shillong faces acute
shortage of water. Nearly every
household in the city has a roof
top rain water harvesting
structure. Nearly 15-25 per cent of
the total water requirement of the
household comes from roof top
water harvesting.

6. It is the system that
collects rainwater which
flows away as surface
runoff.
The runoff rainwater is
caught and use to
recharge aquifers by
adopting appropriates
techniques.
SURFACE RUNOFF
HARVESTING

7. Why we need RWH?
• WATER scarcity may be an outcome of large and
growing population and consequent greater demand
for water and unequal access to it .
• A large population means more water
not only for domestic use but also to
produce more food.
• Hence to facilitates higher food
grain production water resources are being over expl
oited to expand irrigated areas and dry
seasons agriculture .

8. .
• After post independent
India witnessed intensive industrialisation and urbanisation .
• The ever increasing no of industries has
made matter worse by exerting pressure on existing fresh water
resources.

9. BENEFITS OF RWH
• It is simple & easy to practice.
• It conserve water , promotes water and energy conservation.
• It reduce soil erosion and pollution of water bodies due to fertiliser and
pesticides .
• Help in reducing energy bill.
• Sustainable for irrigation.
• Prevent flooding .
• Used for several non -drinking purposes.

10. Limitation of RWH
• Unpredictable rainfall.
• Need of regular maintenance.
• Storage limits.

11.  Case study
Rajasthan is a hot and dry place the challenge of natural scarcity
of water was met by a successful experiment .
A band of social worker has transformed a dry area in the Alwar
district into a green place .
They have revived 5 dried up rivers :
Arveri
Ruparel
Sarsa, Bhagani and Jahazwali by constructing water harvesting
structure..

12.  Interesting fact
i. Tamil Nadu is the first state in India which has made
rooftop RWH structure compulsory to all the houses
across the state.
ii. There are legal provisions to punish the defaulters.

13. CONCLUSION
 RWH process will maintain
a healthy water cycle in
our ecosystem.
 RWH will help aquatic life
from getting polluted .
 Proper awareness
campaigns should be
conducted to ensure the
awareness of general
public about RWH and its
uses.
"Jal hai to kal hai
If You have Water , You
can think of the
FUTURE."

14. REFERENCES
Agarwal, J.C. (2007). Education for Values, Environment &
Human Rights, Shipra Publications, Delhi.
Kumar, A. (2007). A Text Book of Environmental Science, A.P.H.
Publication House, New Delhi.
Laxmi, G.V.S. (2004). Methods of teaching Environmental
Science, Discovery Publishing House, New Delhi.
Samuel, K. (2007). Environment Education: Curriculum &
teaching Methods, Sarup & Sons, New Delhi.
Satapathy, M. K. (2007). Education, Environment & Sustainable
Development. Shipra Publications, Delhi.