Chengalpattu District Profile

• Chengalpttu district is bounded by Chennai districts in the North, Villuppuram district in the South, Bay of Bengal in the East and Tiruvannamalai and Kanchipuram districts in the West.
• The District lies between 12º14'00”N to 13º02'00”N Latitude, 79º 31’30”E to 80º 15' 30”E Longitude and has an areal extent of 2945 sq.km.

Physiography and Drainage

• Chengalpattu district is classified into coastal areas and other plain lands with small intermittent hills.
• Few residual hills such as St.Thomas Mount, Thirukkalukundram hills and Vandalur hills are found in the district. The general elevation of the district ranges from 0.5m to 230m above MSL.
• River Palar is a major river course, which drains this district originates from Western Ghats in Karnataka State. Cheyyar and Kiliyar are the small tributaries of Palar river.

Geology:

Rainfall:

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

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. 5 years 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 in district is as under.

Categorization of Firkas:

The status of Categorization of firkas as of March 2017 for the District in is shown below.