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Per capita
water
·
On August
21, 2008
National
Institute of
Hydrology
(NIH)
revealed
that in
India the
per capita
surface
water
availability
is likely to
be reduced
to 1,401
million
cubic (m3)
and 1,191 m3
by the years
2025 and
2050,
respectively.
·
NIH points
out that in
India per
capita
surface
water
availability
that stood
at 2,309 m3
and 1902 m3
in the years
1991 and
2001,
respectively,
are
projected to
reduce to
1,401 m3 and
1,191 m3 by
the years
2025 and
2050
respectively.
·
Study
reveals that
the
long-term
average
annual
rainfall in
India is
1,160 mm,
which is the
highest
anywhere in
the world
for a
country of
comparable
size,
however, the
annual
rainfall in
India
fluctuates
widely.
Mission
IAS’2009
·
“The
highest
rainfall in
India of
about 11,690
mm is
recorded at
Mousinram
near
Cherrapunji
in Meghalaya
in the
northeast.
In this
region
rainfall as
much as
1,040 mm is
recorded in
a day. At
the other
extreme are
places like
Jaisalmer,
in the west,
which
receives
barely 150
mm of rain,”
·
Study points
out that
India
receives
annual
precipitation
of about
4,000 km3,
including
snowfall.
·
Out of this,
monsoon
rainfall is
of the order
of 3,000
km3. Though
the average
rainfall is
adequate,
nearly
three-quarters
of the rain
pours down
in less than
120 days,
from June to
September
and thus
exhibits
very high
spatial and
temporal
variability.
·
As per the
international
norms,
if
per-capita
water
availability
is less than
1,700 m3 per
year then
the country
is
categorised
as water
stressed and
if
less than
1,000 m3 per
capita per
year then
the country
is
classified
as water
scarce.
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