Central Ground Water Board

Ministry of Water Resources
Government of India

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State Profile

State Profile
Ground Water Scenario of Meghalaya

Area (Sq.km)

22,429

Physiography

Mainly four physiographic units

  • Uplifted Plateau
  • Denudational high hills
  • Denudational low hills
  • Intermontane valleys

Drainage

State is drained by Brahmaputra, Meghna and its tributaries.

Rainfall (mm)

2050 mm with 200 rainy days

Total Districts / Blocks

7 districts   32 Blocks

Hydrogeology

The northern part of the State is covered by consolidated formations comprising granites, gneisses, schists, quartzites, phyllites and Conglomerates with basic and acid intrusives. The zone of weathering is the main repository of ground water, however, the weak planes, fissure, joints and fractures also hold substantial quantity of ground water. Semi-consolidated sandstones with other sedimentary formations cover the entire south western and south eastern part of the State in Khasi and Jaintia hills district. The tubewells in the sedimentary formations in valleys yield 25-50 m3/hr. Unconsolidated formations are restricted to a narrow belt in the extreme north western fringe where hills rolls down to Assam and Bangladesh plains. The deep tube wells in these alluvial formations can yield between 54 to 110 m3/hr. Shallow Tube wells in river fills in Garo hills district yield between 25 & 40 m3/hr. Ground water in the State is characterized by low salinity.

Dynamic Ground Water Resources

 

Annual Replenishable Ground water Resource

1.15 BCM

Net Annual Ground Water Availability

1.04 BCM

Annual Ground Water Draft

0.002 BCM

Stage of Ground Water Development

0.18 %

Ground Water Development & Management

Over Exploited

NIL

Critical

NIL

Semi- critical

NIL

Ground water user maps

7 districts

Artificial Recharge to Ground Water (AR)

  • Feasible AR structures: 300 check dams, 600 weirs, 600 gabion structures, 300 roof top harvesting, 200 development of springs.

AR schemes completed during IX Plan: 1

 

Ground Water Quality Problems

Contaminants

Districts affected (in part)

Iron (>1.0 mg/l)

East Garo Hills, East Khasi Hill, Jaintia Hills

Enactment of Ground Water Bill to regulate and control the development of ground water: 
The State Govt. informed that a Committee has been set up to examine the Model Bill.  

Inclusion of Roof Top Rain Water Harvesting (RTRWH) in building by laws:
The State Government is considering to constitute State RWH Authority.

Central Ground Water Authority


Areas Notified for Regulation of ground water development

NIL

Mass Awareness Programme (as on 31.03.2010)

4

Water Management Training Programme (as on 31.03.2010)

2

 
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