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.
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 |
Geology:
Rock Type | Geological Formation | ||||
Hard Rock | Charnockite, Gneiss, Granite,Laterite, Quartzite, Laterite,Kalkar and Alluvium |
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 |
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.
Recharge Structures | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Check Dam | Percolation Pond | Recharge Pit | Recharge Trench | Others | Ooranies | Defunct Bore well Recharge | Recharge Shaft | Rooftop RWH | Hydro Fracturing | Total |
442 | 2 | 5 | 449 |
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 1.4.2018
Rural Habitations
Total No. of Rural Habitations: 790
Partially covered | 14 (10-39 lpcd ) |
Fully covered | 776 (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 |
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. 5 years average Ground water level in m Below Ground Level for pre and post monsoon is as follows:
Jan |
May |
Jan |
May |
Jan |
May |
Jan |
May |
Jan |
May |
Jan 2018 |
May 2018 |
Jan 2019 |
May 2019 |
5 Years |
5Years |
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 |