Explanation:

Haryana become the first state in the country to complete aquifer mapping for its groundwater resources. Aquifer is an underground layer of water-bearing rock from which groundwater can be extracted.

Aquifer mapping: This technique will help in estimating the quantity and quality of groundwater present inside the rock and also determines the exact location, its size, amount of water that can be stored and its recharge point.
Objective: To prepare management plans in consultation with stakeholders and state governments to take measures to replenish the declining groundwater.
Nodal Agency: This aquifer mapping is undertaken by the Central Ground Water Board (CGWB) on the scale of 1:50,000 in 3D.
Technology: For this purpose, CGWB is using advanced technologies like heli-borne geophysical surveys and sophisticated software such as Rock Works, ARC GIS, Modflow and Map Info have been used for preparing management plans.
Target: CGWB has set target to complete the aquifer mapping of the entire country by 2022.
In the first phase, 8 states have been selected for this kind of scientific mapping where groundwater situation has already reached a critical level.
These states are Haryana, Andhra Pradesh, Gujarat, Karnataka, Punjab, Rajasthan, Tamil Nadu and Telangana.
It was for the first time that such mapping had been undertaken on a large scale.