Central Ground Water Board

Ministry of Water Resources
Government of India

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State Profile

Ground Water Scenario
    Delhi


Area (Sq.km)

1483

Physiography

  • Masudpur-Wazirabad Ridge
  • Older Alluvial Plain
  • Yamuna Flood Plain

Drainage

The state is drained by river Yamuna

Rainfall (mm)

Average Annual rainfall:
Safdarjung-712 mm

Total Districts

9 Districts / 27 Tehsils

GROUND WATER MEDIUM (Hydrogeological Conditions)
 

The Ground water availability in the territory is controlled by the hydrogeological situation characterized by occurrence of alluvial formation and hard rocks such as quartzite. The hydrogeological set up and the following distinct physiographic units further influence the ground water occurrence: (1) Older Alluvial Plain on the eastern and western side of the ridge. (2) Yamuna Flood Plain deposits. (3) Isolated and nearly closed Chattarpur alluvial basin. (4) NNE-SSW trending Quartzite Ridge. The yield of tubewells ranges between 18-144 m3/ hr in Yamuna Flood Plain aquifers. In Older Alluvium of eastern and western sides of the ridge, the yield of tubewells ranges between 12 to 36 m3/ hr. Tubewells constructed in Chattarpur alluvial  basin tapping the aquifers of both alluvium and weathered  and fractured quartzite yield about 9 to 27 m3 / hr.  Discharge of tubewells constructed in Quartzites varies from 6-15 m3 / hr.

GROUND WATER EXPLORATION/SOURCES FINDINGS


Dynamic Resources

Annual Replenishable Ground water Resource

0.30 BCM

Net Annual Ground Water Availability

0.28 BCM

Annual Ground Water Draft

0.48 BCM

Stage of Ground Water Development

170 %

Developmental Monitoring

Over Exploited

7 blocks

Critical

NIL

Semi- critical

NIL

Exploratory Tube wells Constructed (as on 31.03.2007)

142

No. of ground water observation wells

87

Ground Water User Maps

9 districts

Artificial Recharge to Ground Water (AR)

  • Area identified for AR: 693 sq. km.
  • Quantity of Surface Water to be Recharged: 444 MCM
  • Feasible AR structures  Percolation Tanks: 23, Check Dams and nala bunds: 10,
  • RWH in Urban Areas: 21735

 

AR schemes completed during VIII Plan: 1
AR schemes completed during IX Plan: 16

Ground Water Quality Problems

Salinity

The ground water is fresh at all depths in the areas around the ridge in the Central, New Delhi, South and Southwest Districts and also Chattarpur basin. In the areas west of the ridge, ground water is generally brackish with fresh water is existing down to 25 to 30 m only. In the flood plains of Yamuna, in general, fresh water aquifers exist down to 30-45 m.

Fluoride

Especially in southwest, west and parts of north-west districts.

Enactment of Ground Water Bill to regulate and control the development of ground water: 
The State Government proposes to amend the Delhi Water Board Act to accommodate concerns expressed in the Model Bill, draft of which has since been prepared and at consultation stage.

Inclusion of Roof Top Rain Water Harvesting (RTRWH) in building by laws:
Ministry of Urban Development and Poverty Alleviation vide notification dated the 28th July 2001 has included Roof Top Rain Water harvesting in building byelaws for a plot of 100 sq. m or more. All buildings having minimum discharge of 10,000 litres and above per day have been advised to incorporate wastewater recycling system which should be used for horticulture purposes.

Central Ground Water Authority

Areas Notified

For Regulation of ground water development

  • South West District
  • South District
  • Yamuna Flood Plain area

For Registration of GW abstraction Structures

  • East District
  • New Delhi District
  • North East District
  • North West District
  • West Delhi District

Mass Awareness Programmes (as on 31.03.2007)

22

Water Management Training Programme (as on 31.03.2007)

19

 
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