Mayiladuthurai District Profile

• Mayiladuthurai district is bounded in the North by Cuddalore district, in the west by Thanjavur districts and in the south by Thiruvarur district and Karaikkal district in Pondicherry State and east by Bay of Bengal.
• The District lies between 10º 57’ 00”N to 11º 26' 00”N Latitude, 79º 31' 00”E to 79º 55' 00”E Longitude and has an aerial extent of 1172 sq.km.

Physiography and Drainage

• The entire Mayiladuthurai district is a plain terrain with the slope less than 1%. The topographical slope is towards east and southeast.
• The total length of the coast in the east is 90 km.
• The district area falls under river basin namely Cauvery sub basin.
• The district is drained by river like Cauvery, Kollidam, Virasolanar, Uppanar
• The district forms the delta part of river Cauvery.

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 26 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.