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Saturday , 31st July 2021
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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.
  • There are 10 Blocks, 333 Villages and 4678 Habitations in the District.

Physiography and Drainage

  • Krishnagiri district forms parts of Cauvery and Pennaiyar 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.
  • Ponnaiyar 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 Ponnaiyar draining in the district.

Geology:

Rock Type Geological Formation
Hard Rock Charnockite, Granite, Pegmatite, Champion Gneiss, Quartzite and Alluvium

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
766.0 757.6 1049.7 590.6 1145.9 850.58

Hydrogeology:

Type of aquifer Discontinuous unconfined to semi-confined aquifers in fissured formations.
Aquifer parameters  
Well yield lpm: 36 – 1125
Transmissivity (T)(m 2/day) 8 – 73
Transmissivity (T)m 2/day 8 – 73
Permeability (K)m/day: 0.78 - 23
Depth of Water level 8m to 25m

Ground Water Level:

The Ground Water levels from the 44 number of observation wells of TWAD have been analyzed for Post-Monsoon and Pre-Monsoon. Since 1991, the average Groundwater 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

5 Years
Pre Monsoon
Average

5Years
Post Monsoon
Average

8.20

13.58

17.10

21.27

14.43

28.50

9.05

12.85

12.11

14.1

18.03

12.17

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) 354.94
Existing Gross Groundwater draft for all users (in MCM) 471.44
Stage of Groundwater development (in %) 133 %
Categorization of District Over -Exploited

Categorization of Firkas:

The status of Categorization of firkas as of March 2011 for the District is shown below.

Categorisation based on Extraction (as on March 2013) No. of Firkas Firkas
Over Exploited (>100%) 12 Alapatti, Bargur, Guruparapalli, Kallavi,
Krishnagiri, Mathur, Palepalli,
Pochampalli, Samalpatti,
Singarapettai, Uthangarai, Veppanapalli
Critical (90%-100%) 1 Hosur
Semi-Critical (70%-90%) 8 Barur, Berigai, Mathigiri
Nagarasampatti, Periyamuthur,
Rayakottai, Shoolagiri, Uthanapalli
Safe (<70%) 8 Andevanapalli, Anjetti, Denkankotta, Kelamangalam,
Kakkadasam, Mathigiri, Thally, Kaveripattinam
Others (Poor& Saline) -  
Total 29  
Water supply status as on 1.4.2021

Rural Habitations

Total No. of Rural Habitations: 3983

Partially covered 1757 (10-39 lpcd )
Fully covered 2226  (40 lpcd and above)

Urban Towns ( Water supply status - 1.4.2017)

S.No Name of Towns Population Present water supply level LPCD
Municipalities
1 Krishnagiri 71323 90
2 Hosur 116821 90
Town Panchayats
1 Denkanikottai 24252 70
2 Kaveripattinam 15006 85
3 Bargur 16366 70
4 Nagojanahalli 9953 70
5 Uthangarai 18470 70
6 Kelamangalam 13321 70