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• Perambalur district is bounded by Ariyalur district in the East, Cuddalore and Villupuram districts in the northeast and north while in the northwest it is Salem District in the North West and Tiruchirapalli district in the west and south west directions.
• The District lies between 11°00’00’’ to 11°31’00’’ N latitude and 78°36’00’’ to 79°30’00’’ E longitude and has an areal extent of 1750 sq.km.
• There are 4 Blocks, 121 Villages and 630 Habitations in the District.
 Physiography and Drainage:
• Perambalur district forms parts of Vellar and Cauvery basins.
• Vellar River flows through the northern boundary of the district while Chinnar River draining in the northern part of the district confluences with R.Vellar.
• The southern part of the district falls in the R.Cauvery basin with many small streams draining the district area.
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 90%
Sedimentary Rock 10%
Gneiss, Charnockite, Limestone,
Sandstone, Shale and Alluvium
Type of aquifer Water Table to Semi confined conditions.
Aquifer parametersAlluviumSedimentaryHard rock
Well yield in lpm 300 - 950300 - 55080 - 210
Transmissivity (T) m 2/day225 - 150090 - 19035 - 130
Permeability (K) m/day20 - 5015 - 305 - 20
Depth of Water level3 m to 15m
 Ground Water Level::
The Ground Water levels from the 16 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
154 19 13 24 10 14 30 8 272
 Groundwater Potential as on March 2011 (as per CGWB):
Net Groundwater Availability (in MCM)207.62
Existing Gross Groundwater draft for all users (in MCM)280.76
Stage of Groundwater development (in %)135 %
Categorization of DistrictOver Exploited
 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%) 6 Chettikulam, Kurumbalur, Pasumbalur,
Perambalur, Valikandapuram, Vengalam.
Critical (90%-100%) -
Semi Critical (70%-90%) 3 Keelapuliyur, Kolakanatham, koothur
Safe (<70%) 2 Vadakkalur, Varagur.
Others (Poor& Saline) -
Total 11
Water supply status as on 1.4.2017
 Rural Habitations
Total No. of Rural Habitations: 630
Partially covered0 (10-39 lpcd )
Fully covered630 (40 lpcd and above)
 Urban Towns (Water supply status - Sep 2016)
S.NOName of Towns Population Present water supply level LPCD
1Perambalur 49648


Town Panchayats
1 Labbaikudikadu 11891 73
2 Kurumbalur 12420 70
3 Poolambadi 10737 71
4 Arumbavur 12467 70
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