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TIRUCHIRAPALLI DISTRICT PROFILE
• Tiruchirappalli district is one of the inland districts in the State and lies in the Central Part of the State.
• 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 mmNormal Rainfall in mm
20132014201520162017
522.90535.70862.0474.5690817.68
 Geology:
Rock TypeGeological 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 parametersAlluviumCretaceousHard rock
Well yield in lpm10 - 201.1 -3.51 - 2
Transmissivity (T)m2/day 49 - 21633 - 78232 - 80
Permeability (K)(m/day))2 - 510 - 665 - 10
Specific capacity. (lpm/md)7.20.3 - 2.560.8 - 2.5
Depth of Water level3 m to 15m
 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. Since 1991 average Ground water level in m Below Ground Level for pre and post monsoon is as follows:
 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 Roof top 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 DistrictSemi 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 2011) 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 1.4.2017
 Rural Habitations
Total No. of Rural Habitations: 3340
Partially covered566 (10-39 lpcd )
Fully covered2774 (40 lpcd and above)
 
 Urban Towns (Water supply status - Sep 2016)
S.NOName of Towns Population Present water supply level LPCD
Corporation
1 Tiruchirappalli 847387 130
Municipalities
1 Thuraiyur 32439 91
2 Manapparai 40510 85
3 Thuvakudi 38887 91
Town Panchayats
1 Balakrishnampatti 8635 78
2 Kallakudi 11604 74
3 Kattuputhur 10933 73
4 Koothappar 15943 94
5 Lalgudi 23740 115
6 Manachanallur 25931 85
7 Mettupalayam 7681 80
8 Musiri 28727 70
9 Ponnampatti 12167 70
10 Pullampadi 10241 73
11 Puvalur 7905 73
12 S. Kannanur 13073 86
13 Sirugamani 10743 82
14 Thathaiyangarpet 12980 79
15 Thottiyam 14909 90
16 Uppiliapuram 7705 81
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