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Lower Vellar, Cuddalore district, Tamil Nadu
Terrain : Sedimentary Alluvium
Approx. Area (Km2) : 344
General Hydrogeological Conditions and Aquifers : Fresh water aquifers in coastal environment in semi-consolidated Cuddalore sandstones and the overlying alluvium.
Criteria for selection : The coastal area represents alluvium underlain by thick coastal sediments resting over the crystalline basement. The area falls in semi-critical category and is affected by coastal salinity in the eastern most part. The stage of ground water development is 71%.
Geographical Applicability of the Methodology : Coastal tracts of Andhra Pradesh, Gujarat, Kerala, Orissa, Tamil Nadu, and West Bengal.
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Watershed Tumkur district, Karnataka
Terrain : Sedimentary Alluvium
Approx. Area (Km2) : 376
General Hydrogeological Conditions and Aquifers : Aquifers in weathered zone and fractures underlying the weathered zone.
Criteria for selection : The area represents granites. It includes semi-critical, critical and overexploited area and around 2800 wells are dried up in the district. The stage of groundwater development is 158%
Geographical Applicability of the Methodology : Hard rocks areas of Andhra Pradesh, Bihar, Chhattisgarh, Karnataka, Kerala, Madhya Pradesh, Orissa, Rajasthan, Tamil Nadu, Uttar Pradesh, West Bengal.
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Chandrabhaga Watershed, Nagpur district, Maharashtra
Terrain : Hard Rock
Approx. Area (Km2) : 360
General Hydrogeological Conditions and Aquifers : Aquifers in weathered and vesicular basalts and underlying Gondwana sandstones occurring from 50 to 150 m below ground level.
Criteria for selection : The area represents Deccan basaltic Traps underlain by Gondwana sediments. The stage of groundwater development is over 66.5% and it is in safe category. In this area industrial pollution of groundwater is reported.
Geographical Applicability of the Methodology : Mostly Maharashtra, parts of Andhra Pradesh, Gujarat, Karnataka, and Madhya Pradesh.
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Watershed, Patna district, Bihar
Terrain : Sedimentary Alluvium
Approx. Area (Km2) : 500
General Hydrogeological Conditions and Aquifers : Aquifers in the thick (~ 750 m) alluvium of middle Ganga basin.
Criteria for selection : The area represents a thick pile of Ganga alluvium. The western part of the area is affected by arsenic contamination in the top phreatic aquifers within 50m depth. The stage of ground water development is 60%.
Geographical Applicability of the Methodology : Mostly alluvium plains of Bihar, Haryana, Madhya Pradesh, Punjab, Uttar Pradesh, West Bengal.
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Baswa-Bandikui watershed, Dausa district, Rajasthan
Terrain : Hard Rock
Approx. Area (Km2) : 598
General Hydrogeological Conditions and Aquifers : Thin sand and gravel aquifers in 80-90 m thick alluvial cover of the underlying hard rocks.
Criteria for selection : The area represents hard rocks covered by alluvium. The area suffers from fluoride, iron, nitrate contaminations, salinity and over exploitation The stage of groundwater development is 173%.
Geographical Applicability of the Methodology : Alluvial covered hard rock areas of Andhra Pradesh, Bihar, Karnataka, Orissa, Rajasthan, Tamil Nadu, Uttar Pradesh, and West Bengal.
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Parts of Thar desert in Jaisalmer district , Rajasthan
Terrain : Sedimentary Alluvium
Approx. Area (Km2) : 505
General Hydrogeological Conditions and Aquifers : Fresh water aquifers are in the alluvium underlying the desert sand. The thickness of desert sand and alluvium varies from 60 to 100 m. The underlying sand stone limestone holds thick potential aquifer. At places the groundwater is brackish to saline.
Criteria for selection : It represents a typical area in the Thar desert with a pile of dry sand, alluvium, sandstone and limestone resting over crystalline basement. The area is affected by groundwater salinity and falls in the critically exploited category.
Geographical Applicability of the Methodology : Deserts of Rajasthan.
 
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Pilot Project Areas
The AQUIM project is implemented in six selected areas in different hydrogeological environs of the country as shown below. Click on the project locations for more information:
 
AQBHR: Watershed, Patna district, Bihar
AQKAR: Watershed Tumkur district, Karnataka
AQMAH: Chandrabhaga Watershed, Nagpur district, Maharashtra
AQRAJ: Baswa-Bandikui watershed, Dausa district, Rajasthan
AQDRT: Ramgadh, Jaisalmer district, Rajasthan
AQTND: Lower Vellar, Cuddalore district, Tamil Nadu
 
The salient features of the project sites are summarized below.
Terrain Pilot Study Areas Approx. Area (Km2) General Hydrogeological Conditions and Aquifers Criteria for selection Geographical Applicability of the Methodology
Hard Rock Baswa-Bandikui watershed, Dausa district, Rajasthan (AQRAJ) 598 Thin sand and gravel aquifers in 80-90 m thick alluvial cover of the underlying hard rocks The area represents hard rocks covered by alluvium. The area suffers from fluoride, iron, nitrate contaminations, salinity and over exploitation The stage of groundwater development is 173%. Alluvial covered hard rock areas of Andhra Pradesh, Bihar, Karnataka, Orissa, Rajasthan, Tamil Nadu, Uttar Pradesh, and West Bengal.
Chandrabhaga Watershed, Nagpur district, Maharashtra (AQMAH) 360 Aquifers in weathered and vesicular basalts and underlying Gondwana sandstones occurring from 50 to 150 m below ground level The area represents Deccan basaltic Traps underlain by Gondwana sediments. The stage of groundwater development is over 66.5% and it is in safe category. In this area industrial pollution of groundwater is reported. Mostly Maharashtra, parts of Andhra Pradesh, Gujarat, Karnataka, and Madhya Pradesh.
Sedimentary Alluvium Watershed Tumkur district, Karnataka (AQKAR) 376 Aquifers in weathered zone and fractures underlying the weathered zone The area represents granites. It includes semi-critical, critical and overexploited area and around 2800 wells are dried up in the district. The stage of groundwater development is 158% Hard rocks areas of Andhra Pradesh, Bihar, Chhattisgarh, Karnataka, Kerala, Madhya Pradesh, Orissa, Rajasthan, Tamil Nadu, Uttar Pradesh, West Bengal.
Lower Vellar, Cuddalore district, Tamil Nadu (AQTND) 344 Fresh water aquifers in coastal environment in semi-consolidated Cuddalore sandstones and the overlying alluvium The coastal area represents alluvium underlain by thick coastal sediments resting over the crystalline basement. The area falls in semi-critical category and is affected by coastal salinity in the eastern most part. The stage of ground water development is 71%. Coastal tracts of Andhra Pradesh, Gujarat, Kerala, Orissa, Tamil Nadu, and West Bengal.
Watershed, Patna district, Bihar (AQBHR) 500 Aquifers in the thick (~ 750 m) alluvium of middle Ganga basin The area represents a thick pile of Ganga alluvium. The western part of the area is affected by arsenic contamination in the top phreatic aquifers within 50m depth. The stage of ground water development is 60%. Mostly alluvium plains of Bihar, Haryana, Madhya Pradesh, Punjab, Uttar Pradesh, West Bengal.
Ramgadh, Jaisalmer district , Rajasthan (AQDRT) 505 Fresh water aquifers are in the alluvium underlying the desert sand. The thickness of desert sand and alluvium varies from 60 to 100 m. The underlying sand stone limestone holds thick potential aquifer. At places the groundwater is brackish to saline. It represents a typical area in the Thar desert with a pile of dry sand, alluvium, sandstone and limestone resting over crystalline basement. The area is affected by groundwater salinity and falls in the critically exploited category. Deserts of Rajasthan.
 
Unless otherwise specified, the source for the figures and maps presented for each pilot project areas is CGWB.
 
 
     
 
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