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NAMAKkAL DISTRICT PROFILE
• Namakkal district is bounded by Tiruchirappalli district in the East, Erode district in the West, and Salem district in the North and Karur district in the South.
• The District lies between 11º 00'00”N to 11º 34’ 48”N Latitude, 77º 40'15”E to 78º 29' 30”E Longitude and has an areal extent of 3404 sq.km. .
• There are 15 Blocks, 322 Villages and 3936 Habitations in the District.
 Physiography and Drainage:
• Namakkal district is characterized by undulating terrain with isolated hillocks, which are part of Eastern Ghats.
• Kolli hills range is the important hill in the district. The general slope of the area is towards south and southeast.
• Most of the southern part of the district is drained by Cauvery and its tributary Thirumanimuttar.
 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
622.30589.30818.6388.2783.7793.36
 Geology:
Rock TypeGeological Formation
Hard RockCharnockite, Gneiss, Pegmatite,
Granite, Alluvium
 Hydrogeology:
Type of aquifer Discontinuous unconfined to semi
confined aquifers in fissured
formations
Aquifer parameters
Well yield in lpm 23 - 553
Transmissivity (T) m 2/day9 - 25
Permeability (K) m/day0.26 - 1.63
Depth of Water level22m to 30m
 Ground Water Level::
The Ground Water levels from the 37 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
390 1 4 5 400
 Groundwater Potential as on March 2011 (as per CGWB):
Net Groundwater Availability (in MCM)491.73
Existing Gross Groundwater draft for all users (in MCM)439.84
Stage of Groundwater development (in %)89 %
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%) 20 Erumaipatti, Kalappanaikanpatti, Alanganatham
Mallasamudram, Mangalapuram,
Mohanur, Mullukurichi, Nallipalayam,
Nallur, Namagiripettai, Namakkal, Pandamangalam
Paramathi, Puduchatram, Rasipuram,
Sellappampatti, Senthamagalam,
Vaiyappamalai, Valaiyapatti, Vennandur.
Critical (90%-100%) 2 Elachipalayam,Pallapatti
Semi Critical (70%-90%) 5 Jedarpalayam,
Kumarapalayam, Manickampalayam,
Molasi
Safe (<70%) 3 Pallipalayam,
Thirupuli Nadu, Valavanthi nadu.
Others (Poor& Saline) -
Total 30
Water supply status as on 1.4.2017
 Rural Habitations
Total No. of Rural Habitations: 3936
Partially covered778 (10-39 lpcd )
Fully covered3158 (40 lpcd and above)
 
 Urban Towns (Water supply status - Sep 2016)
S.NOName of Towns Population Present water supply level LPCD
Municipalities
1 Rasipuram 50244 110
2 Kumarapalayam 71594 90
3 Namakkal 55145 110
4 Thiruchengodu 95335 97
5 Pallipalayam 40140 92
Town Panchayats
1 Alampalayam 20286 74
2 Mallasamudram 18007 70
3 Vennanthur 14568 72
4 Pillanallur 11181 70
5 Pothanur 18455 70
6 Paramathi 11986 73
7 Venkarai 9330 71
8 Pandamangalam 7259 60
9 Velur 25012 67
10 Sendamangalam 19750 108
11 Mohanur 14315 100
12 Namagiripettai 21250 85
13 Athanur 9827 64
14 Erumaipatti 12085 122
15 Padaveedu 10451 116
16 Kalappanaickenpatty 10831 125
17 Seerapalli 12403 97
18 Pattinam 8912 79
19 R.Pudupatti 7478 100
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