Chennai:
The catchment areas may have failed to get
adequate rainfall during the north-east monsoon but Metro Water says the rains
have helped improve the ground water levels by an average rise of 2.84 metres.
A Metro water spokesman said that as per
the water level and water quality assessment by Metro Water through a network
of 145 wells, it was found that the average water level which was 5.59 metres
below the ground (June 2014), improved to 2.75 metres after the monsoon in
December 2014.
It is learnt that the water quality (Total dissolved Solids) has
also improved in the range of 200 to 600 ppm. Metro water said that this is due to the
awareness created by door to door campaign on the maintenance of Rain Water
Harvesting.
The spokesman said that due to the
insufficient rainfall in Chennai city for the last two years, the state
government took initiative on June 2014 to install and maintain the rainwater
harvesting structures. Massive campaigns were also conducted in all the 200
depots of Metro Water involving school children besides pamphlets containing
different methods suitable for different soil types in Chennai city and
stickers containing the Rain Water Harvesting maintenance tips were also
issued.
This has augured well in Geoge Town,
Mandaiveli, Besant Nagar and Nungambakkam areas where the average rise in water
level is one metre. It also boosted the ground water levels in Thiruvottriyur,
Tondaiarpet, Kottur and Ayanavaram area where the average rise is two metres.
Similarly, in Anna Nagar West, Koyambedu,
West Mambalam, Saidapet and Little Mount, the average rise is three metres. In
Puzhal, St Thomas Mount and Pallikaranai area, the average rise is four metres.
COMPARISON OF WATER LEVEL AND WATER QUALITY
IN CHENNAI
CITY -2014
(BEFORE AND AFTER RAIN)
|
SL.
NO
|
LOCATION
|
WATER LEVEL
|
DIFFE
RENCE
|
WATER QUALITY
|
||
|
BEFORE RAIN
IN METRES
|
AFTER RAIN
IN METRES
|
BEFORE RAIN
IN PPM.
|
AFTER RAIN
IN PPM
|
|||
|
1
|
Puzhal
|
7.60
|
1.50
|
6.10
|
500
|
300
|
|
2
|
Thiruvottriyur
|
6.20
|
3.70
|
2.50
|
700
|
500
|
|
3
|
Tondaiyapet
|
7.10
|
4.90
|
2.20
|
600
|
400
|
|
4
|
Parrys corner
|
5.80
|
4.20
|
1.50
|
1000
|
500
|
|
5
|
Korattur
|
4.70
|
1.50
|
3.20
|
1500
|
500
|
|
6
|
Ambattur (Balaji Ngr)
|
10.65
|
2.10
|
8.55
|
700
|
400
|
|
7
|
Ayanavaram
|
4.85
|
1.80
|
3.05
|
600
|
400
|
|
8
|
Villivakkam
|
8.10
|
2.30
|
5.80
|
600
|
300
|
|
9
|
Anna Nagar (West)
|
8.10
|
1.30
|
3.80
|
600
|
400
|
|
10
|
Koyambedu
|
5.85
|
2.25
|
3.60
|
600
|
500
|
|
11
|
Chepauk
|
4.25
|
1.70
|
2.55
|
900
|
600
|
|
12
|
Nungambakkam
|
4.25
|
1.65
|
2.60
|
1000
|
500
|
|
13
|
West Mambalam
|
5.95
|
2.00
|
3.95
|
1000
|
500
|
|
14
|
Saidapet
|
7.50
|
4.20
|
3.30
|
700
|
400
|
|
15
|
Little Mount
|
7.05
|
2.20
|
3.05
|
700
|
200
|
|
16
|
St Thomas Mount
|
9.10
|
2.30
|
6.80
|
1000
|
300
|
|
17
|
Kotturpuram
|
2.80
|
1.90
|
0.90
|
600
|
300
|
|
18
|
Mandaiveli
|
2.55
|
1.05
|
1.50
|
500
|
300
|
|
19
|
Besant Nagar
|
5.25
|
3.60
|
1.65
|
500
|
100
|
|
20
|
Pallikaranai
|
6.80
|
0.60
|
6.20
|
1000
|
500
|
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