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State Profile
Ground Water Scenario
Tripura
Area (Sq.km) |
10,492 |
Rainfall (mm) |
1927 |
Total Districts / Blocks |
4 distt. 17 Blocks |
GROUND WATER MEDIUM (Hydrogeological Conditions)
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 to3 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.
GROUND WATER EXPLORATION/SOURCES FINDINGS
Dynamic 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 % |
Developmental Monitoring |
Over Exploited |
NIL |
Critical |
NIL |
Semi- critical |
NIL |
Exploratory Tube wells Constructed (as on 31.03.2007) |
64 |
No. of ground water observation wells |
42 |
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 parts |
Iron |
Dharamnagar, Kauleshaher, Khowai, Ambasa, Amarpur and Parts of Agartala Valley. |
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:
To be included.
Central Ground Water Authority
Areas Notified |
For Regulation of ground water development |
NIL |
For Registration of GW abstraction Structures |
NIL |
Mass Awareness Programmes (as on 31.03.2007) |
3 |
Water Management Training Programme (as on 31.03.2007) |
2 |
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Ministry
of Water Resources