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Nilgiri District Profile

  • The Nilgiris district located on the western part of Tamil Nadu and it is bounded by Karnataka State on the north, Erode District in the east, Coimbatore district on the southeast and by Kerala State on the south and west.
  • The District lies between 11º 10'00’’N to 11º43'00’’N Latitude, 76º14'00’’E to 77º02'00’’E Longitude and has an areal extent of 2549 sq.km.

Physiography and Drainage:

  • The Nilgiris district, the entire hilly terrain district forms part of River Cauvery basin.
  • Many streams originate from hill slopes and have formed several rivers in the deep valley portions.
  • Many reservoirs are formed in the district to harness surface water and the water is used for drinking and power generation.
  • The surplus of Pykara reservoir flows towards north as Pykara River which then flows towards east in the name of river Moyar bordering the northern boundary of the district.
  • The surplus flow from Kundah and other reservoirs in the district joins the Bhavani River near Mettupalayam in Coimbatore district.

Rainfall:

The average annual rainfall and the 5 years rainfall collected from IMD, Chennai is as follows:

Actual Rainfall in mm Normal Rainfall in mm
2013 2014 2015 2016 2017
1534.1 1960.4 1720.9 888.5 1469.1 1522.7

Geology:

Rock Type Geological Formation
Hard Rock Charnockite, Gneiss, Quartzite

Ground Water Level:

No observation wells are being mentored by TWAD Board.

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.

Categorization of Firkas:

The status of Categorization of firkas as of March 2020 for the District in is shown below.

Categorisation based on Extraction (as on 2020) No. of Firkas Firkas
Over Exploited (>100%) 0  
Critical (90%-100%) 0  
Semi Critical (70%-90%) 2 Ithalar, Kundah
Safe (<70%) 13 Cherambadi, Coonoor, Devarshola, Gudalur, Ketti, Kilkotagiri,
Kotagiri, Melur, Nedugula, Pandalur, Sholur, Thuneri, Udhagamandalam.
Others (Poor & Saline) 0  
Total 15  

Rural Habitations

Total No. of Rural Habitations: 1233

Partially covered 55 (10-39 lpcd )
Fully covered 1178 (40 lpcd and above)