C
Shivakumar
Chennai:
he erratic monsoon in the State last month not only resulted in a deficit of around 30 per cent of rains but also a dip in the ground water levels in 30 of the 32 districts, according to State Ground and Surface Water Resources Data Centre of Water Resources Department.
Officials at the centre told Express that barring
Dharmapuri and Erode registering a ground water table rise of 1.05 metres
respectively all the 30 districts registered a dip in the ground water.
Interestingly, the drastic dip is being witnessed in the
agrarian districts of Coimbatore, Theni, Villupuram and Thiruvanamalai.
In Coimbatore, the water levels dipped by 5.55 metres
followed by Tiruvanamalai (3.85), Villupuram (3.18) and Theni (3.37 metres).
Sources said last year, one could strike water in
Coimbatore at a depth of 8.36 metre last year but now farmers have to dig
nearly 14 metres to get water.
Interestingly, in Theni, the ground water table which was
already low at 11.02 metres last year, has further receded to 14.39 metres.
What is more alarming is that in all agrarian as well as
hard rock region, the ground water level has fallen last month.
Officials at the centre blamed the erratic rainfall in
the state last month. “The precipitation is not sufficient besides there is
heavy extraction of ground water,” they said.
But at the same time, officials feel that the ground
water situation could improve if it rains this month. “We still have December
rains and hope things would improve by then,” the official says.
Meanwhile, in Chennai, the ground water level has also
reduced by 1.30 metre in November. Officials said that the data is being taken
from Public Works Department monitoring wells in the city. They said that
Chennai Metro Water has an area wise observations wells and their data is more
area specific.
However, the monsoon in the city is too erratic that
while in Velachery the ground water table could have risen but then in
Kodambakkam it could have fallen, said a official at the centre.
Dist Previous year (nov) current year rise fall
Chennai 3.57
4.87
Thiruvallur 2.96 3.33 -- 0.37
Kanchipuram 2.64
Tiruvanamalai
4.20
Vellore
6.50
Dharmapuri 6.26
Krishnagiri
7.15
Cuddalore
4.61
Villupuram 3.12 6.30
Thanjavur
2.87 3.07
--- 0.20
Tiruvarur
2.53
Nagapatinam 1.44 2.76 ---- 1.32
Trichy
8.86 11.30 2.44
Karur
7.07 8.22 1.15
Perambalur 9.35 9.37 -----
0.02
Pudukkotai 6.60 7.90
----- 1.30
Ariyalur 4.64 4.66
---- 0.02
Salem 8.76 11.27
---- 2.51
Namakkal 11.19
Erode 9.69
Coimbatore 8.36 13.91 ---- 5.55
Thiruppur
10.91 11.98 ---- 1.07
Nilgiri 1.73 1.98 ---- 0.25
Dindigul 7.92 11.32 ----
3.40
Madurai 6.14 7.25 ---- 1.11
Ramanathprm 4.24 5.74 ---- 1.50
Sivagangai 5.27 8.06 ---- 2.79
Theni 11.02 14.39 ---- 3.37
Thoothkudi 5.31 6.36 ---- 1.05
Tirunelveli 5.11 7.82 ---- 2.71
Virudhnagar
7.10 9.03 ---- 1.93
Kanyakumari 5.68
Source:
State Ground and Surface Water Resources Data Centre
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