Sorry, you need to enable JavaScript to visit this website.
Monday , 29th November 2021
Section: State-district-profile pages are not under access control

Thiruvarur District Profile

  • Thiruvarur district is bounded on the north by Nagapattinam district, on the south by Palk strait, on the east by Pondicherry (Karaikkal part) and Nagapattinam district and on the west and north-west by Thanjavur district.
  • The District lies between 10º 10'00”N to 11º 01'00”N Latitude, 79º 13'00”E to 79º 43'00”E Longitude and has an aerial extent of 2417 sq.km.
  • There are 10 Blocks, 431 Villages and 2977 Habitations in the District

Physiography and Drainage

  • Thiruvarur district is a plain terrain with a gentle slope towards the east in the northern and central part and towards the south in the southern part.
  • The maximum surface elevation is about 30.0m in the western part of the district.
  • The district area falls under three river basins namely Cauvery sub-basin, Vennar sub-basin and new delta area.
  • The district is irrigated and drained by the rivers Vennar, Vettar, Mudikondan, and Arasalar etc.

Geology:

Rock Type Geological Formation
Sedimentary Rock Laterite, Sand and Silt,Sandstone, Alluvium and Marine deposit

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
2013 2014 2015 2016 2017 2018
1045.90 953.60 918.40 645.3 1247.9 971.6 1173.3

Hydrogeology:

Type of Aquifer Fairly thick discontinious confined acquifer fresh groundwater overlained by saline water towards the coast.
Depth of Water level 1 m to 8m

Ground Water Level:

The Ground Water levels from the 19 number of observation wells of TWAD have been analysed for Post-Monsoon and Pre-Monsoon. Since 1991,the years average Ground water level in m Below Ground Level for pre and post monsoon is as follows:

5 years average Ground water level in m Below Ground Level for pre and post monsoon is as follows:

Jan
2013

May
2013

Jan
2014

May
2014

Jan
2015

May
2015

Jan
2016

May
2016

Jan
2017

May
2017

Jan
2018
May
2018
Jan
2019
May
2019

5 Years
Pre Monsoon
Average

5Years
Post Monsoon
Average

7.40

13.04

7.10

11.17

4.20

7.30

3.71

8.74

8.47

15.0

13.8 18.2 12.8 15.8

9.1

13.3

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):

Net Groundwater Availability (in MCM) 299.80
Existing Gross Groundwater draft for all users (in MCM) 214.20
Stage of Groundwater development (in %) 71%
Categorization of District Semi Critical

Categorization of Firkas:

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

Categorisation based on Extraction (as on March 2013) No. of Firkas Firkas
Over Exploited (>100%) 9 Agarathirumalam, Alangudi, Avoor,
Kodavasal, Koradacheri, Kulikkarai,
Peralam, Thirukkannamangai,
Valangaiman.
Critical (90%-100%) 1 Thiruvizhimazhalai.
Semi Critical (70%-90%) 3 Koothanallur, Sannanallur, Nannilam
Safe (<70%) 10 Kottur(T), Kunniyur, Mannargudi,
Nidamangalam, Palaiyur(T),
Thalaiyamangalam, Thiruvarur,
Ullikottai, Vadapathimangalam, Vaduvur.
Others (Poor& Saline) 4 Alathampadi, Edaiyur, Thiruthuraipoondi,
Murhupet.
Total 27  
Water supply status as on 1.4.2021

Rural Habitations

Total No. of Rural Habitations: 1704

Partially covered 281 (10-39 lpcd )
Fully covered 1423(40 lpcd and above)

Urban Towns ( Water supply status - 1.8.2019)

S.No Name of Towns Population Present water supply level LPCD
Municipalities
1 Kuthanallur 25423 90
2 Mannargudi 66999 90
3 Thiruvarur 58301 90
4 Thiruthuraipoondi 24404 90
Town panchayats
1 Valangaiman 11754 70
2 Needamangalam 9336 70
3 Peralam 6149 70
4 Muthupet 21722 70
5 Koradacheri 6450 70
6 Kodavasal 14639 70
7 Nannilam 12618 70