Central Ground Water Board, Ministry of Water Resources, Government of India

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.
Artificial Recharge to Ground Water (AR)	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:
To be enacted.

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 31.03.2011)	5
Water Management Training Programme (as on 31.03.2011)	3

CENTRAL GROUND WATER BOARD