Central Ground Water Board, North Central Region, Bhopal monitors ground water level in the entire state of Madhya Pradesh through a network of 1511 ground water monitoring dug wells and piezometers, four times in a year in order to bring out the spatial and temporal changes in the ground water regime.

At present a total of 1500 GWMWs are monitored representing almost all the blocks of twenty three districts of the states of West Bengal. Due to inaccessibility in Andaman group of Islands, initially the task was taken up with the help of a few GWMWs but gradually the number of stations have been increased to 113.

Dissemination of technical information in a way that is very useful to the user agencies is an important aspect that plays a vital role in the safe and optimal development of groundwater resources of our country. As an effort in this direction, Central Ground Water Board is bringing out “Groundwater Year Book” each year.

The ground water level monitoring carried out by Central Ground Water Board, Southern Region, and Hyderabad during 2020-21 is compiled in the form of Ground Water Year Book. It outlines the ground water level behaviour in the current year with reference to the corresponding periods of previous year and also with last decadal mean.

Groundwater on account of its universal availability, dependability and low capitalcost, is the major source of water to meet the requirement of various sector in India.

To understand the groundwater situations in diverse hydrogeological environments, changes in various facets of ground water, like variation in water level and water quality are to be monitored. A regular monitoring of ground water regime through a network of observation wells i.e.

Ground Water Year Book is based on the information generated through field studies. The data has been analyzed by Officers of Central Ground Water Board, State Unit Office, Delhi and presented in the report.

Monitoring of ground water levels from 729 Hydrograph Network Stations (HNS) were carried out in the year 2019-2020 with an objective to assess ground water regime of phreatic aquifer. The water level monitoring was carried out in the months of May’19, August’19, November’19, and January’20.

Central Ground Water Board, West Central Region, has been issuing Ground Water Year Book annually for Gujarat state by compiling the hydrogeological, hydrochemical and groundwater level data collected from the Groundwater Monitoring Wells established by the Board in Gujarat State.