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• Pudukkottai district is bounded by Thanjavur district in the East, Thiruchirappali in the North and west, Sivaganga and Ramanathapuram Districts in the South and Bay of Bengal in the south east.
• The District lies between 9º51’00” to 10º44'40”N Latitude, 78º25'30”E to 79º16'15”E Longitude and has an areal extent of 4651 sq.km.
• There are 13 Blocks, 497 Villages and 4558 Habitations in the District.
 Physiography and Drainage:
• Pudukottai district has an undulating topography with a gentle slope towards East-North East along the coast.
• There are no major hill ranges in this district, except some detached patches of residual hills at Thirumayam, Kudimiyanmalai, Sithannavasal, Viralimalai and Narthamalai.
• There is no perennial river, however Agniar,Vellar,Koraiyar,Gundar, etc are some of the seasonal rivers that drain the district.
• The rivers Vellar and pambar flow in the N.W.S.E direction. Apart from these rivers there are approximately 5451 shallow inter connected tanks which are mainly rainfed.
The average annual rainfall and the 5 years rainfall collected from IMD, Chennai is as follows:
Acutal Rainfall in mmNormal Rainfall in mm
Rock TypeGeological Formation
Hard Rock 60%
Sedimentary Rock 40%
CharnockGneiss, Granite, Charnockite,
Quartzite, Pegmatite,Laterite,
Sandstone, Alluvium and Marine
Type of Aquifer Water Table conditions in hard rock Water table to
confined conditions in the sedimentary terrain
Aquifer parametersHard rockCretaceousTertiary
Well yield in lpm 1 - 23 - 45 - 10
Transmissivity (T)(m 2/day)5 - 259 - 4789 - 157
Permeability (K)(m/day)3 - 160.5 - 2.8 1.5 - 3.0
Depth of Water level1.3 m to 12m
 Ground Water Level::
The Ground Water levels from the 24 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:
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
7 45 19 169 15 40 16 0 311
 Groundwater Potential as on March 2011 (as per CGWB):
Net Groundwater Availability (in MCM)1431.08
Existing Gross Groundwater draft for all users (in MCM)314.38
Stage of Groundwater development (in %)22 %
Categorization of DistrictSafe
 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%) -
Critical (90%-100%) 0
Semi Critical (70%-90%) 5 Alangudi, Arasarkulam, Keeramangalam, Karaiyur, Viralimalai.
Safe (<70%) 36 Aranthangi, Arasamalai, Athani,
Avudaiyarkoil, Embal, Gandarvakottai,
Illuppur, Kallakkottai,
Karambakudi, Keelanilai, Keeranur,
Killukkottai, Kodumbalur, Kottur(P),
Kudumiyanmalai, Kunnandarkoil,
Malaiyur(P), Manamelkudi, Mimisal,
Nagudi, Narthamalai, Neerpalani,
Ponnamaravathy, Ponpette,
Poovathakudi, Pudukkottai, Pudunagar,
Sengeerai, Silattur, Sithanavasal,
Thirumayam, Vallanadu, Varappur(P),
Veerapatty, Vennavalkudi, Virachilai.
Others (Poor& Saline) 3 Kottaipattinam, Perumaruthur,
Total 44
Water supply status as on 1.4.2016
 Rural Habitations
Total No. of Rural Habitations: 4558
Partially covered1795 (10-39 lpcd )
Fully covered2763 (40 lpcd and above)
 Urban Towns (Water supply status - Sep 2016)
S.NOName of Towns Population Present water supply level LPCD
1Aranthangi 40814 99
2Pudukkottai 117638 80
Town Panchayats
1 Karambakudi 14626 90
2 Eluppur 14127 71
3 Ponnamaravathi 12676 71
4 Keeranur 11667 73
5 Alangudi 12367 75
6 Keeramangalam 9357 111
7 Annavasal 8906 70
8 Arimalam 8948 81
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