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.
• There are 4 Blocks, 35 Villages and 1233 Habitations in the District.

Physiography and Drainage

• The Nilgiris district, an 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 the north as Pykara River which then flows towards the 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:

Geology:

Hydrogeology:

Sustainability:

With a view to enhancing the Sustainability of the drinking water sources, recharge structures are being implemented by TWAD Board under various State and Central Government assistance.

The Recharge Structures implemented so far is as under.

Groundwater Potential as on March 2011 (as per CGWB):

Categorization of Firkas:

The status of Categorization of Firkas as of March 2013 for the District in is shown below.

Water supply status as on 1.4.2018

Rural Habitations

Total No. of Rural Habitations: 1233

Urban Towns (Water Supply Status - 1.04.2018)

Ground Water Level:

No observation wells are being mentored by TWAD Board.