CENTRAL GROUND WATER BOARD
Ground Water Regime Monitoring
Ground water levels are being measured four times a year during January, April/ May, August and November. The ground water regime monitoring started in the year 1969 by Central Ground Water Board. At present a network of 14966 ground water monitoring wells located all over the country is being monitored. Ground water samples are collected from these observation wells once a year during the month of April/ May to obtain background information of ground water quality changes on regional scale. The database thus generated forms the basis for planning the ground water development and management programme. This data is used for assessment of ground water resources and changes in the ground water regime consequent to various development and management activities. Following is the State wise distribution of ground water monitoring wells in the country:
STATE-WISE STATUS OF GROUND WATER MONITORING WELLS IN INDIA AS ON 31.03.2011 S. No. Name of the State Total No. of Ground Water Monitoring Wells (as on 31.03.2011) States DW PZ Total 1 Andhra Pradesh 591 311 902 2 Arunachal Pradesh 12 1 13 3 Assam 297 9 306 4 Bihar 314 12 326 5 Chhattisgarh 461 117 578 6 Delhi 25 137 162 7 Goa 43 10 53 8 Gujarat 635 376 1011 9 Haryana 205 186 391 10 Himachal Pradesh 86 0 86 11 Jammu & Kashmir 168 19 187 12 Jharkhand 212 14 226 13 Karnataka 1132 373 1505 14 Kerala 665 273 938 15 Madhya Pradesh 870 298 1168 16 Maharashtra 1075 142 1217 17 Manipur 13 10 23 18 Meghalaya 31 5 36 19 Nagaland 12 7 19 20 Orissa 948 162 1110 21 Punjab 154 143 297 22 Rajasthan 654 384 1038 23 Tamil Nadu 556 590 1146 24 Tripura 33 11 44 25 Uttar Pradesh 884 181 1065 26 Uttaranchal 42 67 109 27 West Bengal 468 418 886 UTs 1 Andaman & Nicobar 64 0 64 2 Chandigarh 1 27 28 3 Dadra & Nagar Haveli 7 0 7 4 Daman & Diu 9 5 14 5 Pondicherry 4 7 11 Total 10671 4295 14966