|
State Profile
Ground Water Scenario
Jharkhand
Area (Sq.km) |
79,714 |
Rainfall (mm) |
917 |
Total Districts / Blocks |
18 districts |
GROUND WATER MEDIUM (Hydrogeological Conditions)
The state is underlain by variety of rock formations from Pre-Cambrian to recent age. A major part of the state is underlain by formations comprising of granites, granite gneisses, meta sedimentaries and a variety of volcanic rocks. The volcanic formation represented by Rajmahal traps are exposed as patches in a linear fashion in the north-eastern part. The sediments belonging to Vindhayan system are seen exposed in the north- western part of the state. The lateritic capping is invariably seen in the south western part. Recent alluvial formations are mostly confined to the valleys along major rivers of the state. The ground water exploration has revealed presence of 3 to 4 potential fractured zones at variable levels within a depth of 200 m from the ground level. The discharge of the exploratory wells is highly variable ranging between 3.6 to 54 m3/hr. In some of the pockets higher discharge wells has also been constructed.
GROUND WATER EXPLORATION/SOURCES FINDINGS
Dynamic Resources |
Annual Replenishable Ground water Resource |
5.58 BCM |
Net Annual Ground Water Availability |
5.25 BCM |
Annual Ground Water Draft |
1.06 BCM |
Stage of Ground Water Development |
20 % |
Developmental Monitoring |
Over Exploited |
NIL |
Critical |
NIL |
Semi- critical |
NIL |
Exploratory Tube wells Constructed (as on 31.03.2007) |
322 |
No. of ground water observation wells |
208 |
Ground Water User Maps |
22 districts |
Artificial Recharge to Ground Water (AR) |
- Area identified for AR: 2450
- Quantity of Surface Water to be Recharged: 546 MCM
- Feasible AR structures: 500 Nala Bunds, 336 Revival of Kandi Ponds, RWH in Urban Areas for 1.5 Lakhs houses.
|
AR schemes completed during IX Plan: 3 |
Enactment of Ground Water Bill to regulate and control the development of ground water:
Enactment of legislation for regulating the extraction and use of ground water on the lines of the Model Bill circulated by the Ministry is under active consideration of the State Government. Model Draft Bill for the legislation has already been formulated and is likely to be finalized shortly.
Inclusion of Roof Top Rain Water Harvesting (RTRWH) in building by laws:
Chief Minister has directed to amend the law appropriately for making roof top rainwater harvesting mandatory in urban areas of the state. Rain Water Harvesting has been included in Bye Laws by Ranchi Regional Development Authority.
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) |
7 |
Water Management Training Programme (as on 31.03.2007) |
7 |
|
Ministry
of Water Resources