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.
Physiography and Drainage:
- The North western part and the Southern part of the Coimbatore is occupied by hill ranges of Western Ghats, namely Nilgiris hills on the North-West and Anamalai hills on the South.
- The most part of the district forms parts of Cauvery river basin where as the South western part of the district comes under Ponnani River basin.
- The major river courses which come under Cauvery basin are Bhavani, Noyil and Amaravathi.
- The South western part of the district is drained by tributaries of Ponnani, namely Palar, Aliyar and uppar originating from Anamalai hills.
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 | ||||
---|---|---|---|---|---|
2017 | 2018 | 2019 | 2020 | 2021 | |
873.4 | 1302 | 1272.4 | 1585.3 | 2119.1 | 1213.2 |
Geology:
Rock Type | Geological Formation |
Hard Rock | Charnockite, Gneiss, Granite, Pyroxenite and Quartzite, Alluvium |
Ground Water Level:
The Ground Water levels from the 39 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 |
5 Years |
5Years |
20.4 |
29.6 |
19.8 |
22.3 |
13.7 |
17.6 |
109 |
14.6 |
9.3 |
13.0 |
16.5 | 12.6 |
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 | Rooftop RWH | Hydro Fracturing | Total |
181 | 26 | 3 | 3 | 110 | 40 | 363 |
Categorization of firkas:
The status of Categorization of firkas as of March 2020 for the District is shown below.
Categorisation based on Extraction (as on 2020) | No. of Firkas | Firkas |
---|---|---|
Over Exploited (>100%) | 30 | Alandurai, Annur(N), Annur(S), Anupparpalayam, Coimbatore, Ganapathi, Karamadai, Karumathampatti, Kinathukatavu, Kolarpatti, Kovilpalayam, Madampatti, Madukkarai, Mettupalayam, Ottakkal Mandabam, Perianegamam, Periyanaickenpalayam, Perur, Pollachi(N), Pollachi(S), Ramapattinam, Sarkar Samakulam, Saravanampatti, Selakkarichal, Singanallur, Thirumalaiampalayam, Thondamuthur, Vadachittur, Vadavalli, Varapatti |
Critical (90%-100%) | 2 | Kottur, Sulur. |
Semi Critical (70%-90%) | 5 | Anamalai, Kuniamthur, Kurichi, Marchinaiakenpalayam, Thudialur. |
Safe (<70%) | 1 | Valparai |
Others (Poor & Saline) | 0 | |
Total | 38 |
Rural Habitations
Total No. of Rural Habitations: 2238
Partially covered | 82 (10-39 lpcd ) |
Fully covered | 2156 (40 lpcd and above) |