This is a presentation done by me for my class seminar :) . Topic is based on Rainwater harvesting (Basic).(Not for commercial purposes) Much useful for students . It contains better graphics and attractive images to make studies for students easier. Follow me for new presentations. enjoy !!

5. WHAT IS RAIN WATER
HARVESTING?

12. •Due to rapid urbanization,
infiltration of rain water into
the sub-soil has decreased
drastically and recharging
of ground water has
diminished.

15. ROOFTOP RAIN WATER HARVESTING
Rooftop Rain Water Harvesting is
the technique through which rain
water is captured from the roof
catchments and stored in
reservoirs. Harvested rain water
can be stored in sub-surface
ground water reservoir by
adopting artificial recharge
techniques to meet the
household needs through storage
in tanks

17. • Storage of direct use
• Recharging ground water aquifer
- Recharging dug wells
- Recharging pits
- Recharging tube well

18. SURFACE RUNOFF HARVESTING
• Harvesting of
surface runoff and
storage of the
same into
reservoirs such as
water pans makes
it available for use
when required.

19. •In this method of collecting rainwater
for irrigation, water flowing along the
ground during the rains will be
collected to a tank below the surface
of the ground..

21. Dating back 200 years, tribes in
northeast India have used
bamboo drip irrigation as a
means of bringing water to
seasonal crops. This timeless and
traditional technology uses
locally available material while
harnessing the forces of gravity.
An assortment of holed bamboo
shoots zig-zag downhill,
diverting the natural flow of
streams and springs across
terraced cropland.

23. • BAWODI:
• Traditional step wells are
called vavadi in Gujarat,
or baoris or bavadis in
Rajasthan and northern
India.
• They were secular
structures from which
everyone could draw
water.
• Most of them are defunct
today.

24. JOHADS
• A johad is a
crescent-shaped
bund which is
built across a
sloping
catchment to
capture the
surface water
before it runs off.
• Water
accumulating in
the johad
percolates in the
soil to augment
the groundwater.
The groundwater
then can be used
when there is no
rainfall.

25. Kunds
• Covered underground tank,
developed primarily for
tackling drinking water
problems.
• Usually constructed with local
materials or cement, kunds
were more prevalent in regions
where groundwater is saline.
• Before the onset of rains every
year, meticulous care was
taken to clean up the
catchment of the kunds.
• Cattle grazing and entry with
shoes into the catchment area
of the kunds was strictly
prohibited.
• The proximity of a kund to the
house or village saved time
and effort in searching for
drinking water.

29. •MOHAMED NIHAL
•HISHAM MOHAMED SHAREEF
•SHAHID SHAMSUDDEEN
•AJMAL T.A
•SHIYAS M.K
•ABHAY
•AESHKAR
•RAHEEL
•SHAHAM
•MUBARAK