3/6/2017 Home TamilNadu Map Ariyalur District Profile Print ARIYALUR DISTRICT PROFILE Ariyalur district `has been carved out of Perambalur district and is bounded by the districts of Cuddalore in the north and north­east, Nagapattinam in the east, Thanjavur in the south and south­east, Tiruchirapalli in the south­west and Perambalur in the west. The district lies between 10°53’00’’ to 11°26’00’’ Northern latitude and 78°56’00’’ to 79°31’00’’ Eastern longitude and has an areal extent of 1,944 sq.km. • There are 6 Blocks, 201 Villages and 1574 Habitations in the District. Physiography and Drainage: • Ariyalur district forms parts of Vellar and Cauvery Rivers basins. • Cauvery River fringes the southern boundary of the district. River Vellar drains in the northern part and River Marudaiyar flowing in the south confluences with R.Coleroon as a tributary. 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 2011 2012 2013 2014 2015 923.9 666.70 667.6 698.9 1058.8 1071.8 Geology: Aquifer parameters Alluvium Sedimentary Hard Rock Well yield in lpm 300­950 300­550 80­210 Transmissivity (T) m 2/day 225­1500 90­190 35­130 Permeability (K) m/day 20­50 15­30 5­20 Depth of water level 3m to 15m Ground Water Level: The Ground Water levels from the 27 number of observation wells of TWAD have been analysed for Post­Monsoon and Pre­ Monsoon. Since 1991, average Ground water level in m Below Ground Level for pre and post monsoon is as follows: 1/3 3/6/2017 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 in district is as under. Recharge Structures Defunct Bore Roof Check Percolation Recharge Recharge Recharge Hydro Others Ooranies well top Total Dam Pond Pit Trench Shaft Fracturing Recharge RWH 89 3 9 10 111 WGroundwater Potential as on March 2011 (as per CGWB) Net Groundwater Availability (in MCM) 314.97 Existing Gross Groundwater draft for all users (in MCM) 161.52 Stage of Groundwater development (in %) 51 % Categorization of District Safe Categorization of Firkas: The status of Categorization of Firkas as of March 2011 for the District in is shown below. Categorisation based on Extraction (as on March 2011)) No. of Firkas Firkas Over Exploited (>100%) ­ Critical (90%­100%) 1 Suthamalli Semi Critical (70%­90%) 1 Sendurai Andimadam, Ariyalur, Elakurichi, Jayankondam, Keelapalur, Kundaveli, Safe (<70%) 13 Kuvagam, Mathur, Nanmangalam, Ponparappi, T. Palur, Thirumanur, Udayarpalayam 2/3 3/6/2017 Others (Poor& Saline) ­ Total 15 Water supply status as on 1.4.2016 Rural Habitations Total No. of Rural Habitations:1573 Partially covered 0 (10­39 lpcd ) Fully covered 1573 (40 lpcd and above) Urban Towns (Water supply status ­ Sep 2016) S.NO Name of Towns Population Present water supply level LPCD Municipalities 1 Jeyakondam 33945 81 2 Ariyalur 28902 83 Town Panchayats 1 Udayarpalayam 12688 70 2 Varadarayanpettai 8259 68 3/3.