Tiruchirapalli District Profile
- Tiruchirappalli district is one of the inland districts in the State and lies in the Central Part of the State.
- The District lies between 10º 17' to 11º 25'N Latitude, 78º 09'to 79º 03'E Longitude and has an areal extent of 4511 sq.km.
- There are 14 Blocks, 404 Villages and 3340 Habitations in the District.
Physiography and Drainage
- Most of the District is a pediplain with a general slope towards the central part where River Cauvery and Coleroon flow.
- The entire district falls in Cauvery Basin and drained by River Cauvery and its tributaries like Ayyar, Uppar, and partly by Maruthaiyar, Ponnanaiyar, Koraiyar and partly by Vellar River System.
- There are small residual hills scattered in western and southern part of the district, prominent among them, is Rock Fort hill, located in the heart of Tiruchirappalli town.
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 | |
522.90 | 535.70 | 862.0 | 474.5 | 690 | 506.6 | 818.0 |
Geology:
Rock Type | Geological Formation | ||||
Hard Rock 95%,Sedimentary Rock 5% | Charnockite, Gneiss, Granite,Quartzite, Pegmatite, Sandstone,Shale, Limestone, Alluvium |
Hydrogeology:
Type of Aquifer | Water Table to Semi confined conditions | ||
---|---|---|---|
Aquifer parameters | Alluvium | Cretaceous | Hard rock |
Well yield in lpm | 10 - 20 | 1.1 -3.5 | 1 - 2 |
Transmissivity (T)m2/day | 49 - 216 | 33 - 782 | 32 - 80 |
Permeability (K)(m/day)) | 2 - 5 | 10 - 66 | 5 - 10 |
Specific capacity. (lpm/md) | 7.2 | 0.3 - 2.56 | 0.8 - 2.5 |
Depth of Water level | 3 m to 15m | ||
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 |
264 | 3 | 1 | 3 | 5 | 3 | 28 | 307 |
Groundwater Potential as on March 2011 (as per CGWB):
Net Groundwater Availability (in MCM) | 725.60 |
Existing Gross Groundwater draft for all users (in MCM) | 571.15 |
Stage of Groundwater development (in %) | 79 % |
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%) | 13 | Kannanur, Kariyamanickam, Thuvarangurichi Koppampatti, Manikandam, Marungapuri, Pulivalam, Thathaiyangarpettai, Thumbalam, Thuraiyur, kattuputhur, Vaiyampatti, Valaieduppu. |
Critical (90%-100%) | 7 | Peruvalpur, Eragudi, Manapparai, Pannapatti, Thottiyam, V.Periyapatti, Sengattupatti |
Semi Critical (70%-90%) | 5 | Mannachanallur,Musiri, Ealurpatti, Uppiliapuram, Sirugambur |
Safe (<70%) | 16 | Aamur, Anbil, Andanallur, Kallakkudi, Kulumani, Lalgudi, Navalpattu, Pullambadi, Vengur, Somarasanpettai, Srirangam, Tiruverumbur, Trichy north, Trichy south, Valadi, Valandau. |
Others (Poor& Saline) | - | |
Total | 41 |
Water supply status as on 1.4.2018
Rural Habitations
Total No. of Rural Habitations: 3340
Partially covered | 229(10-39 lpcd ) |
Fully covered | 3111(40 lpcd and above) |
Urban Towns ( Water supply status - 1.8.2019)
S.No | Name of Towns | Population | Present water supply level LPCD |
---|---|---|---|
Corporation | |||
1 | Tiruchirappalli | 847387 | 134.16 |
Municipalities | |||
1 | Thuraiyur | 32439 | 90 |
2 | Manapparai | 40510 | 89 |
3 | Thuvakudi | 38887 | 87 |
Town Panchayats | |||
1 | Balakrishnampatti | 8635 | 78 |
2 | Kallakudi | 11604 | 84 |
3 | Kattuputhur | 10933 | 73 |
4 | Koothappar | 15943 | 94 |
5 | Lalgudi | 23740 | 80 |
6 | Manachanallur | 25931 | 85 |
7 | Mettupalayam | 7681 | 87 |
8 | Musiri | 28727 | 71 |
9 | Ponnampatti | 12167 | 72 |
10 | Pullampadi | 10241 | 89 |
11 | Puvalur | 7905 | 73 |
12 | S. Kannanur | 13073 | 86 |
13 | Sirugamani | 10743 | 82 |
14 | Thathaiyangarpet | 12980 | 83 |
15 | Thottiyam | 14909 | 92 |
16 | Uppiliapuram | 7705 | 72 |
Ground Water Level:
The Ground Water levels from the 45 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 |
10.60 |
13.42 |
11.00 |
13.87 |
13.87 |
11.87 |
3.11 |
12.03 |
15.08 |
13.9 |
15.7 | 19.1 | 20.5 | 23.1 |
12.8 |
16.0 |