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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.
• There are 19 Blocks, 425 Villages and 2579 Habitations in the District.
 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 and finally confluences in Bay of Bengal.
• 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.
 Rainfall:
The average annual rainfall and the 5 years rainfall collected from IMD, Chennai is as follows:
Acutal Rainfall in mmNormal Rainfall in mm
20132014201520162017
918.201348.501546.80411.901127844.3
 Geology:
Rock TypeGeological Formation
Hard Rock 90%
Sedimentary Rock 10%
Charnockite, Gneiss, Granite,
Granite, Pegmatite, Sandstone,
Limestone, Sandy clay, Alluvium
 Hydrogeology:
Type of Aquifer Unconfined to Semi confined conditions
Aquifer parametersAlluviumHard rock
Well yield in lpm8 - 8543 - 212
Transmissivity (T)m2/day 0.1 - 440.1 - 27
Permeability (K)(m/day))2.2 - 340.15 - 6
Depth of Water level2m 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. Since 1991 average Ground water level in m Below Ground Level for pre and post monsoon is as follows:
 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 is as under.
Recharge Structures
Check Dam Percolation Pond Recharge Pit Recharge Trench Others Ooranies Defunct Bore well Recharge Recharge Shaft Roof top RWH Hydro Fracturing Total
220 54 3 2 5 28 30 342
 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 DistrictSafe
 Categorization of Firkas:
The status of Categorization of firkas as of March 2011 for the District is shown below.
Categorisation based on Extraction (as on 2011) No. of Firkas Firkas
Over Exploited (>100%) 15 Kallurani, Karisal Kulam,
Karivaklamvandanallur, Karuvantha,
Kurukkalpatti, Pazhankottai, Pazhavoor,
Sankarankoil, Nettur
Sernthamangalam, Surandai,
Uthumalai, Vannikonenthal,
Veerasigamani, Keezhapavoor.
Critical (90%-100%) 6 Ayikudi, Gudalur,Puliyankudi
RadhaPuram,Thiruvengadem,Venkadampatti.
Semi Critical (70%-90%) 9 Levinjipuram, Manur, Alankulam,
Kadayanallur, Sivanthipatti, Thalaiyuthu, Tisayanvilai
Vasudevanallur, Veerakeralampudur.
Safe (<70%) 30 Alwarkurichi, Panagudi,
Ambasamudram, Cheranmahadevi, Valliyoor
Elathur, Eruvadi, Gangaikondan,
Kadayam, Kalakadu,
Madhavakurichi, Melapattam,
Melaseval, Moolakaraipatti, Mukkudal,
Muneer Pallam, Nanguneri,
Naranammalpuram, Palayamkottai,
Panpoli, Pappakudi, Poolam, Pudupatti,
Samugarengapuram, Shencottai,
Singampatti, Sivagiri,
Tenkasi, Tirunelveli,
Vijayanarayanapuram.
Others (Poor& Saline) -
Total 60
Water supply status as on 1.4.2017
 Rural Habitations
Total No. of Rural Habitations: 2511
Partially covered275 (10-39 lpcd )
Fully covered2236 (40 lpcd and above)
 
 Urban Towns (Water supply status - Sep 2016)
S.NOName of Towns Population Present water supply level LPCD
Corporation
1Thirunelveli 473637 110
Municipalities
1 Sankarankoil 57277 99
2 Kadayanallur 90364 80
3 Thenkasi 70545 83
4 Puliyankudi 66034 85
5 Shenkottai 57277 80
6 Ambasamudram 35645 92
7 Vickiramasingapuram 47241 92
Town Panchayats
1 Achampudur 13566 84
2 Alangulam 20948 90
3 Alwarkurichi 10045 70
4 Aygudi 15129 80
5 Cheranmadevi 18327 70
6 Courtalam 2089 368
7 Eruvadi 18067 61
8 Gopalasamudram 10694 71
9 Ilanji 10282 77
10 Kalakkad 30921 75
11 Kalladaikurichi 26398 72
12 Keezhapavur 22231 102
13 Manimutharu 11323 72
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 72
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