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Krishnagiri District Profile

  • Krishnagiri district is bounded by Vellore and Tiruvannamalai districts in the East, Karnataka State in the West, Andhra Pradesh State in the North and Dharmapuri District in the South.
  • The District lies between 11º 12'N to 12º 49'N Latitude, 77º 27'E to 78º 38'E Longitude and has an areal extent of 5143 sq.km.

Physiography and Drainage:

  • Krishnagiri district forms parts of Cauvery and Thenpennaiyar Rivers basins. Cauvery River forms the southwestern boundary of the district.
  • Dodda Halla is the most important tributary of Cauvery draining the rugged terrain in the northwestern part of the district.
  • Besides, Thenpennaiyar river is another major river draining the district. It originates from Nandhi hills in Karnataka, and enters Tamil Nadu and flows almost in a southeasterly direction.
  • Pambar and Burgur Ar, are the important tributaries of Thenpennaiyar draining in the district.

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
1145.6 510.4 730.0 798.6 985.4 985

Geology:

Rock Type Geological Formation
Hard Rock Charnockite, Granite, Pegamaite,
Champion Gniess, Quartzite and Alluvium

Ground Water Level:

The Ground Water levels from the 44 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

12.1

14.9

6.3

8.1

11.0

12.7

8.9

11

8.4

10.6

9.5

7.9

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%) 12 Alapatti, Bargur, Berigai, Guruparapalli, Kallavi, Mathur,
Nagarasampatti, Palepalli, Samalpatti, Singarapettai, Uthangarai, Veppanapalli
Critical (90%-100%) 1 Rayakottai
Semi Critical (70%-90%) 7 Bagalur, Hosur, Kelamangalam, Krishnagiri, Mathigiri, Periyamuthur, Pochampalli
Safe (<70%) 9 Andevanapalli, Anjetti, Barur, Denkankotta, Kakkadasam, Kaveripattinam, Shoolagiri, Thally, Uthanapalli.
Others (Poor & Saline) -  
Total 29  

Rural Habitations

Total No. of Rural Habitations: 4653

Partially covered 0 (10-39 lpcd )
Fully covered 4653 (40 lpcd and above)