Central Ground Water Board

Ministry of Water Resources
Government of India

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State Profile

State Profile
Ground Water Scenario of Tripura

Area (Sq.km)

10,492

Rainfall (mm)

1927

Total Districts / Blocks

4 distt.      17 Blocks

Hydrogeology

The semi-consolidated Tertiary formations form the main hydrogeological unit of the State. These formations consist of friable sand stones, clayey sand stone, sandy shales and shales. The semi-consolidated formations can be further subdivided into three principal zones. The first one is confined to central part of Agartala-Udaipur, Khowai-Amarpur, Ambasa, Kailasker, Kumarghat and Dharam Nagar syncline valley; where the yield prospects are good. Fine to medium grained sand stones form the principal aquifer. West of Tripura, artesian belt has been delineated and the yield of such wells are found to be in the order of 1 to 3 m3/hr. High autoflow discharge of 54 m3/hr is observed in Khowai valley. The second one is confined to unconfined aquifers of moderate regional extent with yield prospect of 50-100 m3/hr. This zone extends bordering the hill ranges i.e. the marginal part of Agartala-Udaipur, Khowai-Amarpur, Kamapur-Ambasa, Kailaskar-Kumarbagh and Dharam Nagar valleys. Artesian conditions are rare in these zones. The third zone, comprising moderately thick discontinuous aquifers with yield prospects less than 50m3/hr, is located in the intermontane and smaller valleys. These areas are mostly occupied by argillaceous formations belonging to Surma series.

Dynamic Ground Water Resources

Annual Replenishable Ground water Resource

2.19 BCM

Net Annual Ground Water Availability

1.97 BCM

Annual Ground Water Draft

0.17 BCM

Stage of Ground Water Development

9 %

Ground Water Development & Management

Over Exploited

NIL

Critical

NIL

Semi- critical

NIL

Ground water user maps

4

Artificial Recharge to Ground Water (AR)

Feasible AR structures: 300 checkdams, 500 weirs, 1000 gabion structures, 240 roof top harvesting, 100 development of springs

 

Ground Water Quality Problems

Contaminants

Districts affected (in part)

Iron (>1.0 mg/l)

Dhalai, North Tripura, South Tripura, West Tripura.

Enactment of Ground Water Bill to regulate and control the development of ground water: 
In view of very low development of ground water, State Govt. feels it is not necessary to enact any law at present.  However, the State Govt. would introduce the Bill in future when the stage of development approaches 70 %.

Inclusion of Roof Top Rain Water Harvesting (RTRWH) in building by laws:

As per Rule-110 of the Tripura Building Rules, 2004, water harvesting through starting of rain water run off is mandatory in all new buildings having plinth area more than 300 sq. mtr for all types of uses and in group housing of any size.

 

Central Ground Water Authority

Areas Notified for Regulation of ground water development

NIL

Mass Awareness Programme (as on 31.03.2010)

3

Water Management Training Programme (as on 31.03.2010)

2

 
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