The changes in ground water levels due to natural and human activities in the State is monitored by Central Ground Water Board on a regular basis, four times in a year , viz. January, May, August and November. For this purpose, a network of ground water monitoring wells (dug wells / bore wells / tube wells) representing different hydrogeological environments is maintained. At present, 943 representative wells are monitored to study the ground water regime.

1 - 10 January

20-30 May

20-30 August

1 - 10 November

During the last one decade, the density of dedicated bore wells (piezometers) is increased in a phased manner in view of the constant declining trend and deepening of water levels. Some of the wells are fitted with pressure transducers to record water levels at short interval of time of 6 hours in order to study the effects of external factors influencing the ground water levels.

The water level and temperature data collected from the network is compiled, validated and entered in a database.

For every set of monitoring, a report on the Ground Water scenario is prepared for the State and circulated among the ground water user departments and to the Ministry. This report includes the analysed data and maps on water level configuration, fluctuation of water level with reference to the corresponding period in the previous year and also with reference to the previous decadal average.