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 |
May |
Jan |
May |
Jan |
May |
Jan |
May |
Jan |
May |
5 Years |
5Years |
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.
Recharge Structures | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|
Check Dam | Percolation Pond | Recharge Pit | Recharge Trench | Others | Ooranies | Defunct Bore well Recharge | Recharge Shaft | Rooftop RWH | Hydro Fracturing | Total |
738 | 14 | 6 | 7 | 30 | 795 |
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) |