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Perambalur District Profile

  • Perambalur district is bounded by Ariyalur district in the East, Cuddalore and Villuppuram districts in the northeast and north while in the northwest it is Salem District in the North West and Tiruchirapalli district in the west and south west directions.
  • The District lies between 11°00’00’’ to 11°31’00’’ N latitude and 78°36’00’’ to 79°30’00’’ E longitude and has an areal extent of 1750 sq.km.

Physiography and Drainage:

  • Perambalur district forms parts of Vellar and Cauvery basins.
  • Vellar River flows through the northern boundary of the district while Chinnar River draining in the northern part of the district confluences with R.Vellar.
  • The southern part of the district falls in the R.Cauvery basin with many small streams draining the district area.

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
2017 2018 2019 2020 2021
1005.5 533.2 747.3 1102.4 1563.4 985

Geology:

Rock Type Geological Formation
Hard Rock 90%
Sedimentary Rock 10%
Gneiss, Charnockite, Limestone, Sandstone, Shale and Alluvium

Ground Water Level:

The Ground Water levels from the 16 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:

Jan
2017

May
2017

Jan
2018

May
2018

Jan
2019

May
2019

Jan
2020

May
2020

Jan
2021

May
2021

5 Years
Pre Monsoon
Average

5Years
Post Monsoon
Average

13.7

15.4

8.1

17.1

16.5

19.8

7.9

11.3

6.1

8.2

12.5 9.0

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%) 7 Chettikulam, Keelapuliyur, Kurumbalur, Pasumbalur, Perambalur, Valikandapuram, Vengalam
Critical (90%-100%) 0  
Semi Critical (70%-90%) 1 Koothur
Safe (<70%) 3 Kolakanatham, Vadakkalur, Varagur
Others (Poor & Saline) 0  
Total 11  

Rural Habitations

Total No. of Rural Habitations: 630

Partially covered 0 (10-39 lpcd )
Fully covered 630 (40 lpcd and above)