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Vellore District Profile

  • Vellore district is bounded by Kancheepuram District in the east, Tiruvannamalai and Dharmapuri districts in the south and State of Andhra Pradesh in the North.
  • The District lies between 12º15’23’’to 13º12'32’’ N Latitude, 78º24’16’’ to 79º54’56’’E Longitude and has an areal extent of 6077 sq.km.

Physiography and Drainage:

  • Vellore district can be broadly classified as hilly terrains and plain regions.
  • The east of Eastern Ghats where lies the Palar plain region.
  • The region is mostly undulating and sloping towards east.
  • The river Palar in its course is successively enriched by the tributaries Malattar, Koundinyamahanadhi, Poiney, Cheyyar and Kallar.
  • Palar is not a perennial river and occurrence of flood is very rare and of very short duration.
  • River Cheyyar is the major tributaries of River Palar, originates from Javadhu hills.
  • However river Palar has good thickness of Alluvium all through.

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
1042.4 601.2 827.2 1088.3 1433.6 985

Geology:

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

Ground Water Level:

The Ground Water levels from the 53 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

12.5

19.6

8.1

17.0

12.6

21.3

13.7

19.3

26.4

38.6

16.1 10.1

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%) 16 Ambur, Agaram, Anaicut, Gudiyatham(West), Gudiyatham(East), K.V.Kuppam, Madhanur, Melasannankuppam,
Melpatti, Odugathur, Pallikonda, Sathuvachari, Thuthipattu, Vellore, Vaduganthangal, Valathur
Critical (90%-100%) 2 Ussoor, Pennathur
Semi Critical (70%-90%) 4 Kaniyambadi, Katpadi, Pernampattu, Thiruvalam
Safe (<70%) 1 Melpadi
Others (Poor & Saline) -  
Total 23  

Rural Habitations

Total No. of Rural Habitations: 1760

Partially covered 1335(10-39 lpcd )
Fully covered 425(40 lpcd and above)