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Monday , 29th November 2021
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Coimbatore District Profile

  • Coimbatore district is bounded by Kerala State in the West and South, Tiruppur District in the East, and parts of Nilgiris and Erode Districts in the North.
  • The District lies between 10º 13'00” N to 11º 23' 30”N Latitude, 76º 39'00”E to 77º 30'00”E Longitude and has an areal extent of 7649 sq.km.
  • There are 12 Blocks, 228 Village panchayats and 2238 Habitations in the District.

Physiography and Drainage

  • The Northwestern part and the Southern part of the Coimbatore is occupied by hill ranges of the Western Ghats, namely Nilgiris hills in the North-West and Annamalai hills in the South.
  • The most part of the district forms parts of Cauvery river basin whereas the Southwestern part of the district comes under Ponnani River basin.
  • The major river courses which come under Cauvery basin are Bhavani, Noyyal and Amaravathi.
  • The Southwestern part of the district is drained by tributaries of Ponnani, namely Palar, Aliyar and Upper originating from Annamalai hills.

Geology:

Rock Type Geological Formation
Hard Rock Charnockite, Sillimanite Gneiss, Granite, Pyroxenite Calc.Granulites Quartzite and Alluvium

Rainfall:

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

Actual Rainfall in mm Normal Rainfall in mm
2013 2014 2015 2016 2017 2018
901.0 1221.7 992.9 505.5 873.4 1302.0 689.3

Hydrogeology:

Type of Aquifer Water table conditions in Hard Rock Areas.
Aquifer parameters Yield 50 to 300 lpm
Transmissivity (T): 1.49; 164.18 m2/day
Permeability (K): 0.25; 26.75 m/day
Depth of Water level 7m to 25m

Ground Water Level:

The Ground Water levels from the 38 number of observation wells of TWAD have been analyzed for Post-Monsoon and Pre-Monsoon. Since 1991, the average Groundwater 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

14.3

16.7

15.1

23.0

16.11

16.0

13.79

16.7

20.36

29.7

19.8 22.3 13.6 17.6

16.1

20.3

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) 438.81
Existing Gross Groundwater draft for all users (in MCM) 506.15
Stage of Groundwater development (in %) 115
Categorization of District Over -Exploited

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%) 21 Annur(N), Anupparpalayam, Coimbatore
South, Ganapathi, Karumathampatti,
Kinathukatavu, Kolarpatti, Kovilpalayam,
Perianaickenpalayam, Perianegamam, Pollachi(N), Pollachi(S),
Ramapattinam, Selakkarichal,
Singanallur, Sulur, Thondamuthur,
Thudialur, Vadachittur, Varapatti,ottakkal Mandabam
Critical (90%-100%) 2 Anur,Sarkar Samakulam
Semi Critical (70%-90%) 8 Alandurai, Karamadai, Kottur,
Madukkarai, Marchinaickenpalayam,
perur, Mettupalayam, Saravanampatti
Safe (<70%) 2 Anamalai, Valparai
Others (Poor& Saline) -  
Total 33  
Water supply status as on 1.4.2021

Rural Habitations

Total No. of Rural Habitations: 1200

Partially covered 377 (10-39 lpcd )
Fully covered 823 (40 lpcd and above)

Urban Towns ( Water supply status - 1.4.2017)

S.NO Name of Towns Population Present water supply level LPCD
Corporations
1 Coimbatore 1050721 72
Municipalities
1 Mettupalayam 69213 125
2 Pollachi 90180 104
3 Valparai 70859 122
Town Panchayats
1 Gudalur 38859 143
2 Narasimhanaickenpalayam 17858 187
3 Sarkarsamakulam 10289 179
4 Edikarai 8686 183
5 No.4 Veerapandi 16953 130
6 Karumathampatti 35062 100
7 Karamadai 35166 152
8 Anaimalai 17208 89
9 Dhaliyur 11500 62
10 Periyanaickenpalayam 25930 162
11 Annur 20079 102
12 Pallapalayam 11910 203
13 Erugur 25691 160
14 Vellalur 24872 161
15 Kannampalayam 15868 185
16 Madukarai 30357 127
17 Othakalmandapam 12207 108
18 Sulur 27909 152
19 Thirumalaiyanpalayam 12164 87
20 Ettimadai 9352 143
21 Sirumugai 18223 98
22 Zamin Uthukuli 16354 117
23 Odaiyakulam 13370 108
24 Vettaikaranpudur 17392 114
25 Kottur 26627 85
26 Perur 8004 32
27 Chettipalayam 10366 127
28 Thondamuthur 11492 37
39 Vedapatti 11658 45
30 Puluvapatti 12853 76
31 Kinathukadavu 8653 28
32 Sooleswaranpatti 20104 92
33 Periyanagamam 7098 87
34 Mupperipalayam 10923 61
35 Samathur 5762 78
36 Thenkarai 7349 39
37 Alandurai 7221 101