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Saturday , 31st July 2021
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Thoothukudi District Profile

  • Thoothukkudi district lies in the South eastern corner of Tamil Nadu.
  • The District is bounded on the North by Virudhunagar and Ramanathapuram district, by Bay of Bengal in the East, Tirunelveli District in the West and South West.
  • The District lies between 8 º19'00”N and 9º 20'00”N Latitude, 77º 40'00” E and 78º 10’00”E Longitude and has an areal extent of 4621 sq.km.
  • There are 12 Blocks, 403 Villages and 1740 Habitations in the District.

Physiography and Drainage

  • Thoothukkudi district is one of the coastal Districts of Tamil Nadu.
  • The drainage network in the District is constituted by the rivers originating in Western Ghats and Tamil Nadu uplands and flowing towards the Bay of Bengal.
  • Few streams originate in the hillocks within the district and confluences directly with the sea.
  • Vaippar and Karamaniyar are the major rivers draining the area which are ephemeral in nature.
  • Tamiraparani is the major and perennial river in the district with a mature stage of development and on the way receives several important tributaries such as Karaiyar, Servalar, Manimuthar, Kadana, etc.,

Rainfall:

The average annual rainfall and the 5 years rainfall collected from IMD, Chennai is as follows:

Acutal Rainfall in mm Normal Rainfall in mm
2013 2014 2015 2016 2017 2018
410.8 825.20 876.90 230.4 514.6 561.6 656.3

Geology:

Rock Type Geological Formation
Hard Rock 73%, Sedimentary Rock 27% Charnockite, Gneiss, Granite,Limestone, Sandstone, Alluvium,Sandy silt and Marine deposit

Hydrogeology:

Type of Aquifer Unconfined to Semi confined conditions
Aquifer parameters Hard rock Alluvial
Well yield in lpm 45 - 135 315 - 1080
Transmissivity (T)m2/day 15 - 60 210 - 1500
Permeability (K)(m/day)) 1 - 3 19 - 48
Depth of Water level 5m to 20m

Sustainability:

With a view to enhancing the Sustainability of the drinking water sources, recharge structures are being implemented by TWAD Board under various State and Central Government assistance.

The Recharge Structures implemented so far is as under.

Groundwater Potential as on March 2011 (as per CGWB):

Net Groundwater Availability (in MCM) 544.56
Existing Gross Groundwater draft for all users (in MCM) 235.36
Stage of Groundwater development (in %) 43 %
Categorization of District Safe

Categorization of Firkas:

The status of Categorization of Firkas as of March 2013 for the District is shown below.

Categorisation based on Extraction (as on March 2013) No. of Firkas Firkas
Over Exploited (>100%) 3 Ilayarasanendal,
Pallakurichi, Sattankulam, Udangudi.
Critical (90%-100%) 1 Parivallikottai
Semi Critical (70%-90%) 4 Kadambur, Kayathar, Kovilpatti,Ottapidaram,Sathankulam.
Safe (<70%) 33 Alwarthirunagari, Arumugamangalam,
Authoor, Cholapuram, Deivaseyalpuram,
Eppodumvendran, Ettayapuram,
Kadaliyur, Kadalkudi, Kalugumalai,
Kamanaickenpatti, Keelathattaparai,
Kulathur, Maniyachi, Mudivaithanendal,
Muthulapuram, Nallatinputhur,
Padarnthapuli, Pasuvanthanai,
Perungulam, Pudukottai(T),
Pudur, Seidunganallur, Sivagnanapuram,
Srivaikundam, Srivenkateswarapuram,
Thoothukudi, Tiruchendur, Vallanad,
Vedanatham, Vembar, Vilathikulam.
Others (Poor& Saline) -  
Total 41  
Water supply status as on 1.4.2021

Rural Habitations

Total No. of Rural Habitations: 1753

Partially covered 386 (10-39 lpcd )
Fully covered 1367(40 lpcd and above)

Urban Towns ( Water supply status - 1.8.2019)

S.No Name of Towns Population Present water supply level LPCD
Corporation
1 Thoothukudi 237830 135
Municipalities
1 Kovilpatti 95057 137
2 Kayalpattinam 40588 90
Town Panchayats
1 Alwarthirunagiri 9289 70
2 Arumuganeri 27266 72
3 Athur 10138 78
4 Eral 9478 70
5 Ettayapuram 12772 58
6 Kadambur 4155 72
7 Kalugumalai 14738 67
8 Kanam 3134 70
9 Kayatharu 10400 63
10 Nazerath 16584 70
11 Perungulam 7203 73
12 Sathankulam 14193 73
13 Sayapuram 12792 77
14 Srivaikuntam 15847 70
15 Thenthiruperai 4934 70
16 Tiruchendur 32171 117
17 Udangudi 19738 71
18 V. Pudur 8891 45
19 Vilathikulam 15277 52

Ground Water Level:

The Ground Water levels from the 49 number of observation wells of TWAD have been analysed for Post-Monsoon and Pre-Monsoon. 5 years average Ground water level in m Below Ground Level for pre and post monsoon is as follows:

Jan
2013

May
2013

Jan
2014

May
2014

Jan
2015

May
2015

Jan
2016

May
2016

Jan
2017

May
2017

Jan
2018
May
2018
Jan
2019
May
2019

5 Years
Pre Monsoon
Average

5Years
Post Monsoon
Average

5.90

8.49

7.50

8.98

4.23

6.36

2.68

5.56

8.15

11.3

5.6 7.9 5.5 9.8

5.6

8.3