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State Profile
Ground Water Scenario
Rajasthan
Area (Sq.km) |
3,42,239 |
Rainfall (mm) |
504 |
Total Districts / Blocks |
32 districts / 236 Blocks |
GROUND WATER MEDIUM (Hydrogeological Conditions)
The State can be divided into three hydrogeological units namely, unconsolidated sediments, semi-consolidated sediments and consolidated rocks. The unconsolidated sediments are of two types- alluvial sediments and aeoline deposits. The Alluvial deposits are confined to Barmer, Jalore and Jodhpur district, consisting of sand, clay, gravel and cobbles. Valley fills have been reported from Jhunjhunu, Ajmer, Bhilwara and Udaipur district. The Aeoline sediments constitute one of the major aquifers east of major fault, east of Bikaner. It occupies an area of 1400 sq.km. The aquifer thickness is 40 to 80 m. The yield of wells ranges from 100 to 150 m3/hr. Semi-consolidated formations include sandstones, limestones and Aur beds, covering Jaisalmer and Barmer districts. The dugwells in Jaisalmer limestones yield 13 to 68 m3/day. The yield of wells in Lathi sandstone varies from 50-150 m3/hr. The consolidated rocks includes gneiss, granites, schist, phyllites, marble and Vindhyan sandstones, limestone, quartzite and basaltic flows, mostly restricted to eastern part of the State. The yield prospect is limited unless the well is located near major lineaments or any other weak planes. The ground water quality is in general poor (brackish to saline) at deeper levels.
GROUND WATER EXPLORATION/SOURCES FINDINGS
Dynamic Resources |
Annual Replenishable Ground water Resource |
11.56 BCM |
Net Annual Ground Water Availability |
10.38 BCM |
Annual Ground Water Draft |
12.99 BCM |
Stage of Ground Water Development |
125 % |
Developmental Monitoring |
Over Exploited |
140 Blocks |
Critical |
50 Blocks |
Semi- critical |
14 Blocks |
Exploratory Tube wells Constructed (as on 31.03.2007) |
1346 |
No. of ground water observation wells |
1373 |
Ground Water User Maps |
32 districts |
Artificial Recharge to Ground Water (AR) |
- Area identified for AR: 39120 sq km
- Quantity of Surface Water to be Recharged: 861 MCM
- Feasible AR structures: 3228 percolation tanks, 1291 anicuts, 2871 recharge shafts, RTRWH structures (4 lakh houses)
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AR schemes completed during IX Plan: 18 |
Ground Water Quality Problems |
Contaminants |
Districts affected in parts |
Salinity |
Bharatpur, Jaipur, Nagaur, Jalore, Sirohi, Jodhpur |
Iron |
Bikaner, Alwar, Dungarpur |
Fluoride |
Barmer, Bikaner, Ganganagar, Jalore, Nagaur, Pali, Sirohi |
Enactment of Ground Water Bill to regulate and control the development of ground water:
The State Govt. of Rajasthan has presented “The Rajasthan Regulation Control of the Development and Management of Ground Water Bill, 2006” in the Vidhan Sabha on 07.04.2006 which is under consideration of the House.
To be enacted.
Inclusion of Roof Top Rain Water Harvesting (RTRWH) in building by laws:
The State Government has made it compulsory for all State Buildings on plots measuring more than 500 sq. m. to adopt Roof Top Rain Water Harvesting for recharging the ground water aquifers.
Central Ground Water Authority
Areas Notified |
For Regulation of ground water development |
- Jhotwara block of Jaipur district
- Pushkar Valley, Ajmer district
- Jalore block, Jalore district
- Raniwara block, Jalore district
- Budhanablock, Jhunjunu district
- Chirawa block, Jhunjunu district
- Mundwa block, Nagaur district
- Behror block, Alwar district
- Bhinmal block, Jalore district
- Surajgarh block, Jhunjunu district
- Dhod block, Sikar district
- Shri Madhopur block, Sikar district
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For Registration of GW abstraction Structures |
NIL |
Mass Awareness Programmes (as on 31.03.2007) |
17 |
Water Management Training Programme (as on 31.03.2007) |
16 |
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Ministry
of Water Resources