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Saturday , 31st July 2021
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Theni District Profile

  • Theni district is bounded by Madurai District in the East, Kerala State in the West and South and Dindigul District in the North.
  • The District lies between 9º32'00’’N to 10º15'00’’N Latitude, 77º10'00’’E to 77º 40'00’’E Longitude and has an areal extent of 2869 sq.km.
  • There are 8 Blocks, 130 Villages and 790 Habitations in the District.

Physiography and Drainage

  • The district is bordered in the west by the Western Ghats and Kerala State. The terrain slopes generally from west to east by the influence of Western Ghats hill ranges and some parts from South to North.
  • The Western Ghats is the main hill ranges present at the west and Andipatti hill ranges are bordering at Southeast part of the district.
  • The northern part of the district is covered by Kodaikanal hills.
  • Theni district forms parts of Vaigai River Sub-catchment.The area is drained by a network of Rivers namely Vaigai River, Suruli Ar, Periyar River and Kottagudi River.
  • The tributaries of Vaigai River i.e. Koothantchi Ar, Kottagudi Ar, Theni Ar and some local streams are drained in this district.

Geology:

Rock Type Geological Formation
Hard Rock Charnockite, Gneiss, Granite,Laterite, Quartzite, Laterite,Kalkar and 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
2013 2014 2015 2016 2017 2018
850.30 939.30 1171.90 366 816.5 1105.3 720.0

Hydrogeology:

Type of Aquifer Ground Water restricted to
weathered mantle fracture zones
having secondary porosity
Well yield in lpm 45 - 135
Transmissivity (T)m2/day 15 - 60
Permeability (K)(m/day)) 0.98 - 2.45
Depth of Water level 5m to 12m

Ground Water Level:

The Ground Water levels from the 21 number of observation wells of TWAD have been analysed for Post-Monsoon and Pre-Monsoon.Since 1991,the 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
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

16.40

15.16

15.80

16.69

13.06

12.10

11.14

27.53

18.0

21.3

16.1 15.2 13.9 16.3

14.9

17.8

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) 357.18
Existing Gross Groundwater draft for all users (in MCM) 307.78
Stage of Groundwater development (in %) 86 %
Categorization of District Semi Critical

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 March 2013) No. of Firkas Firkas
Over Exploited (>100%) 4 Erasakkanaickanur, Kandamanur,
Kodivilarpatti,
Thevaram.
Critical (90%-100%) 2 Andipatti, Rajathani
Semi Critical (70%-90%) 4 Devathanapatti, Theni,
Thenkarai, Uthamapalayam.
Safe (<70%) 7 Bodinayakanur, Chinnamanur,Cumbam Mayladumparai,
Rasingapuram, Markayankottai,Kodangipatti.
Others (Poor& Saline) -  
Total 17  
Water supply status as on 1.4.2021

Rural Habitations

Total No. of Rural Habitations: 607

Partially covered 126 (10-39 lpcd )
Fully covered 481(10-39 lpcd )

Urban Towns ( Water supply status - 1.7.2019)

S.No Name of Towns Population Present water supply level LPCD
Municipalities
1 Bodinayakanur 75675 90
2 Periyakulam 42976 90
3 Theni Alli Nagaram 94453 90
4 Kambam 68090 90
5 Chinnamanur 42305 90
6 Gudalur 38859 90
Town panchayats
1 Andipatti Jakkampatti 27287 70
2 B. Meenakshipuram 7846 70
3 Boothipuram 11022 70
4 Devadanapatti 19285 70
5 Ganguvarpatti 11942 70
6 Hanumanthampatti 10619 70
7 Highways 4882 70
8 Kamayagoundanpatti 16134 70
9 Kombai 15960 70
10 Kuchanur 7024 70
11 Markayankottai 6135 70
12 Melachokkanathapuram 15625 70
13 Odaipatti 13892 70
14 Palani Chettipatti 14879 70
15 Pannaipuram 9323 70
16 Pudupatti 11511 70
17 Thamaraikulam 12372 70
18 Thenkarai 14838 70
19 Thevaram 16079 70
20 Uthamapalayam 29050 70
21 Vadugapatti 13204 70
22 Veerapandi 16158 70