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Monday , 29th November 2021
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Tirunelveli District Profile

  • Tirunelveli district is bounded by Virudhunagar district in the north, Thoothukudi district in the east, in the south by Gulf of Mannar and by Kerala State in the west and Kanniyakumari in the southwest.
  • The District lies between 08º08'09’’N to 09º24'30’’N Latitude, 77º08'30’’E to 77º58'30’’E Longitude and has an areal extent of 6810 sq.km.

Physiography and Drainage

  • Tirunelveli district falls in Tamiraparani river basin, which is the main river of the district.
  • The river has a large network of tributaries which includes the Peyar, Ullar, Karaiyar, Servalar, Pampar, Manimuthar, Varahanathi, Ramanathi, Jambunathi, Gadana nathi, Kallar, Karunaiyar, Pachaiyar, Chittar, Gundar, Aintharuviar, Hanumanathi, Karuppanathi and Aluthakanniar draining the district.
  • The river Tamiraparani originates from the hills in the west and enters Thoothukudi District.
  • The other two rivers draining the district are river Nambiar and Hanumanathi of Nanguneri taluk in the south that are not part of the Tamiraparani river basin.
  • The small part of the district in the northern part falls in river Vaippar basin.

Geology:

Rock Type Geological Formation
Hard Rock 90%

Sedimentary Rock 10%

Charnockite, Gneiss, Granite, Granite, Pegmatite, Sandstone, Limestone, Sandy clay, Alluvium

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
2015 2016 2017 2018 2019
1547 814 1139.6 733.4 1174.2 1184.3

Hydrogeology:

Type of Aquifer Unconfined to Semi confined conditions
Aquifer parameters Alluvium >Hard rock
Well yield in lpm 8 - 854 3 - 212
Transmissivity (T)m2/day 0.1 - 44 0.1 - 27
Permeability (K)(m/day)) 2.2 - 34 0.15 - 6
Depth of Water level 2m to 14m

Ground Water Level:

The Ground Water levels from the 63 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:

5 years average Ground water level in m Below Ground Level for pre and post monsoon is as follows:

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

9.8

5.9

2.1

3.5

10.9

23.2

5.9

16.6

5.3

8.8

11.61

6.79

Sustainability:

With a view to enhance the Sustainability of the drinking water sources, recharge structures are being implemented by TWAD Board under various State and Central Government assistances. The Recharge Structures implemented so far in district is as under.

The Recharge Structures implemented so far is as under.

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

Net Groundwater Availability (in MCM) 888.32
Existing Gross Groundwater draft for all users (in MCM) 516.62
Stage of Groundwater development (in %) 58 %
Categorization of District Safe

Categorization of Firkas:

The status of Categorization of Firkas as of March 2017 for the District in is shown below.

Categorisation based on Extraction (as on 2017) No. of Firkas Firkas
Over Exploited (>100%) 2 Pazhavoor, Vannikonenthal
Critical (90%-100%) 1 Radhapuram
Semi Critical (70%-90%) 6 Levinjipuram, Manur, Moolakaraipatti,
Sivanthipatti, Thalaiyuthu, Vijayanarayanapuram
Safe (<70%) 21 Ambasamudram, Cheranmahadevi, Eruvadi,
Gangaikondan, Kalakadu, Madhavakurichi,
Melapattam, Melaseval, Mukkudal, Muneerpallam,
Nanguneri, Naranammalpuram, Palayamkottai,
Panagudi, Pappakudi, Poolam, Samugarengapuram,
Singampatti, Tirunelveli, Tisayanvilai, Valliyoor
Others (Poor& Saline) -  
Total 30  
Water supply status as on 1.4.2021

Rural Habitations

Total No. of Rural Habitations: 1337

Partially covered 986 (10-39 lpcd )
Fully covered 351 (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 Thirunelveli 473637 110
Municipalities
1 Sankarankoil 57277 99
2 Kadayanallur 90364 81
3 Thenkasi 70545 83
4 Puliyankudi 66034 85
5 Shenkottai 57277 80
6 Ambasamudram 35645 93
7 Vickiramasingapuram 47241 92.50
Town Panchayats
1 Achampudur 13566 84
2 Alangulam 20948 90
3 Alwarkurichi 10045 72
4 Aygudi 15129 80
5 Cheranmadevi 18327 74
6 Courtalam 2089 368
7 Eruvadi 18067 61
8 Gopalasamudram 10694 72
9 Ilanji 10282 77
10 Kalakkad 30921 75
11 Kalladaikurichi 26398 73
12 Keezhapavur 22231 102
13 Manimutharu 11323 73
14 Melacheval 8435 83
15 Melagaram 14535 92
16 Moolakaraipatti 11112 63
17 Mukkudal 14983 70
18 Nanguneri 6640 108
19 Naranammalpuram 17094 117
20 Panagudi 29895 74
21 Panboli 9313 107
22 Pathamadai 16625 60
23 Pudur (S) 12457 88
24 Rayagiri 11223 85
25 Sambavar Vadagarai 16709 89
26 Sankarnagar 7095 78
27 Sivagiri 23040 78
28 Sundarapandiapuram 8987 88
29 Surandai 35272 68
30 Thirukarungudi 9342 75
31 Thiruvenkatam 8337 85
32 Thisayanvilai 23702 60
33 Vadakarai Keezhpadugai 20821 66
34 Vadakkuvalliyur 29417 68
35 Vasudevanallur 21361 89
36 Veeravanallur 19585 74